Improvements in and relating to the Making of Moulds for Casting Metals.
Year: 1899

page_text: Date of Application, 5th Sept., 1899-Accepted, 17th Feb., 1900
COMPLETE SPECIFICATION,
Improvements in and relating to the Making of Moulds for Casting
Metals.
I, HARRY CLIFFORD COOPER, of Austin, Chicago, in the United States of
America, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
My invention has for its object, the production of a molding machine of that
class wherein the pattern is suitably supported on vertically movable mechanism
and the sand composing the mold is discharged from above on to the pattern
and the proper pressure then obtained through a series of mechanical move-
ments. The machine comprises several sets of mechanisms among which are
the following:
Mechanism for picking up the flask and properly placing it in the machine;
mechanism for dropping the outer false flask on to the flask proper; mechanism
for dropping the sprues i.e., the pins for forming the sprue holes into the flask;
mechanism for discharging into the flask and consequently cn to the pattern,
a suitable amount of sand for the preliminary operation; mechanism for dropping
the inner false flask on to the cope mechanism for dropping into the flask, a
plunger to assist in properly packing the sand; mechanism for dropping into the
Hask, an additional body of sand; mechanism for moving the pattern upward
into the flask. (This feature of the mechanism embodies several distinct opera-
tions for moving the different sections of the pattern and adjacent parts.)
Mechanism for inserting into the sand, suitable vent pins; mechanism for filling
the sand reservoir; mechanism for withdrawing the vent pins, sprues and
plunger; mechanism for stripping the patterns from the sand, (this feature
embodying several mechanical movements for stripping the patterns in parts)
mechanism for returning the pattern supporting mechanism to its normal posi-
tion and mechanism for transferring the flask containing the sand mold from the
machine.
While I have just enumerated the various sets of mechanism which go to make
up my completed machine, yet I wish it understood at the outset, that my inven-
tion is not necessarily limited to a series of mechanisms operating in the chrono-
logical order above set forth or embodying necessarily all of the above mechanisms,
the above enumerations being simply for convenience in describing the various
mechanisms. I also desire at this point to call attention to the fact that my
present application shows and describes both a cope machine and a drag machine,
that is to say, a machine for forming the cope and another machine of sub-
stantially the same structure as the first and only modified sufficiently to properly
form the drag, the two machines being in all essential particulars identical and
one being a modification of the other only to the extent necessary to form the
different parts of the mold. In my description which follows, I will therefor
describe, first, the cope machine inasmuch as the drag machine is the cope
machine with certain mechanisms, omitted and the proper modifications made.

page_text: In the drawings!
Figure 1, is a side elevation of the cope machine.
Figure 2, is a side elevation at right angles to Figure 1.
Figure 3, is a vertical section of the mechanism shown in Figure 1 taken on
the line 3-3 of Fig. 9.
Figure 4, is a vertical section of Figure 2 taken on the line 4-4 of Fig. 9.
Figure 5, is a side elevation of the drag machine.
Figure 6, is a side elevation at right angles to Figure 5.
Figure 7, is a vertical section of Figure 5 taken on the line- --7 of
Fig. 17.
Figure 8, is a vertical section of Figure 6 taken on the line S-S of
Fig. 17.
Figure 9, is a plan view of the mechanism shown in Figure 1.
Figure 10, is a sectional view on the line 10-10 of Figures 1 and 3.
Figure 11, is a view partly in elevation and partly in section on the line 11--11,
Figure 10, looking in the direction of arrow 11.
Figure 12, is a sectional view on the line 12-12 of Figure 3.
Figure 13, is a view partly in celevation and partly in section taken on the
line 13-13 of Figure 12, and looking in the direction of arrow 13.
Figure 14, is a plan view of Figure 13.
Figure 15, is a plan view illustrating the sand feed chute of the cope machine.
Figure 16, is a view with the lower end of the plunger in elevation with the
latter raised and with the parts adjacent to the plunger, in section.
Figure 17, is a plan view of the drag machine taken on the line 17-17 of
Figure 5.
Figure 18, is a sectional view illustrating the parts of the drag machine which
correspond with those of the cope machine shown in Figure 16.
Figure 19, is a view of the gear mechanism for operating the sprues, plunger,
vent pins and sand doors.
Figure 20, is a plan view of the mechanism shown in Figure 19.
Figure 21, is another elevation looking in the direction of arrow 21, Figure 20.
Figure 21 is a side elevation of the arm D34.
Figure 21 is a plan view of the same.
Figure 22, is a sectional view of the plunger on the line 22-22 of Figure 24,
looking in the direction of arrow 22.
Figure 23, is a cross sectional view on the line 23-23 of Figure 22.
Figure 24, is a view of the end of the plunger as shown in Figure 22 with parts
in section.
Figure 25, is a sectional view of the plunger casing and adjacent parts.
Figure 26, is a cross section on the line 26-26 of Figure 25,
Figure 27, is a view of the end of mechanism shown in Figure 25.
Figure 28, is a cross section illustrating the sleeve B9.
Figure 29. is an end elevation of the same.
Figure 30, is an elevation with the parts in section of one of the sprues.
Figure 31, is a front elevation of the mechanism for operating the sprues.
Figure 32, is a sectional view ca the line 32-32 of Figure 31.
Figure 33, is a cross section on the line 33-33, Figure 32.
Figure 34, is a sectional view illustrating the construction of the chaplet
adjusters.
Figure 35, is a plan view of the same.
Figure 36, is a sectional view on the line 36-36 of Figure 34.
Figure 37, is a front elevation of the sand reservoirs and adjacent mechanism.
Figure 38, is a sectional view on the line 38-38 of Figure 37, in direction
of arrow 38.
Figure 39, is a horizontal section on the line 39-39 of Figure 38.
Figure 40, is a detail of the gear A 14.
1

page_text: Figure 42, is a sectional view on the line 42-42, Figure 39.
Figure 43, is a sectional view on the line 43-43 of Figure 42.
Figure 44, is a detail of the gear A 182.
Figure 45, is an end elevation of the same.
Figure 46, is a detail of the gear A 21.
Figure 47, is a plan of the same.
Figure 48, is a detail in vertical section.
Figure 48 is a detail of the tripping rod E27.
Figure 48 is a detail of the tripping rod E43.
Figure 49, is a plan view of vent pins, frame and board.
Figure 50, is a sectional view on the line 50-50 of Figure 49.
Figure 51, is a plan view of the pressure plate.
Figure 52, is a sectional detail illustrating the clamping arrangements for the
vent pins.
Figure 53, is a detail of one of the vent pins.
Figure 54, is an elevation with parts in section of the outer section or frame
of the flask and pattern supporting mechanism, (D) 17).
Figure 55, is a plan view of the same.
Figure 56, is an elevation of the middle section or frame of the pattern sup-
porting mechanism, (1) 15).
Figure 57, is a plan view of the same.
Figure 58, is an elevation of the inner section or frame of the pattern sup-
porting mechanism, (D) 12).
Figure 59, is a plan view of the same.
Figure 60, is a detail of the eccentric shaft.
Figure 61, is a section on the line 61-61 of Figure 60.
Figure 62, is an elevation of the guide mechanism for the pattern supporting
fiames.
Figure 63, is an edge elevation of the same.
Figure 64, is an end elevation of the same.
Figures 65, 66, 67, and 68 are elevations of the sustaining rods for the outer
section or frame of the flask and pattern supporting mechanism.
Figure 69 is a plan of the ring D 19.
Figure 70, is an edge elevation with part in section of the same.
Figures 71 and 72 are details of the air cups for cushioning the drop of the
outer frame.
Figure 73, is a detail of the crank shaft for operating the outer frame.
Figure 74, is a sectional view on the line 77-77 of Figure 73.
Figures 75 and 76 are details of the pattern supporting frame guide posts.
Figure 7, is an elevation of the mechanism for moving the middle frame D 15.
Figure 78, is a sectional view of the same.
Figure 79, is a plan view of the same.
Figure 80, is a detail of the ring D41.
Figure 81, is a view partly in elevation and partly in section on the line
84-84 of Figure 80.
Figure 82, is a detail of the ring D 42.
Figure 83, is an elevation of the same.
Figure 84, is a sectional view on the line 87-87, Figure 82.
Figure 84, is a detail of the segments G 10.
Figure 84 is a plan view of the same.
Figure 85, is a detail of the ring D43.
Figure 86, is a view of the same partly in elevation and partly in section on
the line 89-89 of Figure 85.
Figure S7, is an elevation illustrating mechanism for dropping the sand and
dropping the plunger and sprues, cte.
Figure 88, is a plan view of the same.
Figure 89, is a side elevation at right angles to Figure ST.

page_text: Figure 90, is a side elevation of the corresponding mechanism in the drag
machine.
Figure 90 is a detail of the rod E21.
Figure 91 is a plan view of the mechanism shown in Figure 90.
Figure 92, is an elevation at right angles to Figure 90.
Figures 93 and 94 are, a sectional view and plan view respectively of the flask
and accompanying chill of the cope machine.
Figure 94 is a cross section of one of the flask ribs.
Figures 95 and 96 are similar views of the flask for the drag machine.
Figures 97 and 98, are respectively sectional view and plan view of the chill
supporting ring for the cope machine.
Figures 99 and 100, are similar views of the flask supporting ring for the
drag machine.
Figures 101 and 102 are a sectional view and plan view respectively of the
false flask of the drag machine.
Figures 103 and 104 are respectively sectional view and plan view of the
bottom plate or follower board of the drag machine.
Figure 105, is an elevation illustrating the crane for lifting the flask on to
and off the machine.
Figure 106, is an elevation at right angles to Figure 105.
Figure 106 is a side elevation of the crane arm tripping mechanism.
Figure 106 is a plan view of the same.
Figure 107 is a plan view of the mechanism shown in Figure 105.
Figure 107 is a detail of the lever H 23.
Figure 107 is a detail of the catch H 16.
Figures 108 to-127 are diagramatic views illustrating the operation of the
machine so far as the movement of the patterns and adjacent parts are con-
cerned.
Figure 128 is an enlarged sectional view of the pattern and flask supporting
mechanism.
Figures 129 to 134 are details illustrating the operation of the sleeve A 18
and segments A 20 and A 21.
Figure 135 is an elevation showing the switch mechanism on the casing G.
Figure 136 is a plan view of the arm G 36.
Figure 137 is a plan view of the arm C 15%.
Figure 138 is an elevation of switch mechanism on cylinder D1.
Figure 139 is a side elevation of a chaplet varying slightly in construction
from that shown in Figure 34.
Figures 140 and 141 are vertical sections of the same illustrating the opera-
tion.
Figure 142 is a cross section on the dotted line of Figure 140.
Figure 143 is a cross section illustrating the pattern parts and the adjustable
bearing surfaces thereon.
Figure 144 is a side elevation of the clamp which may be used with the flask
of my machine.
Figure 145 is a view at right angles thereto.
Figure 146 is a detail of one of the clamping heads.
In carrying out my invention, I will describe the various mechanisms in the
order in which I have enumerated them above first describing the general con-
struction of the machine.
17. (Figs. 5, 7 and 8) represent a suitable base ring for the machine. Mounted
on this, is a plate D3, (Fig. 3) and above the plate, a cylinder 1) 1, the plate D3,
constituting the bottom of the cylinder. Within the cylinder is a follower
plate D5, carrying packing rings D 6. D4, is a piston head working in the
cylinder and resting on the plate D5. Supported thereby, is a casing DS. The
piston head D4 and the casing DS, constitute the pattern and flask supporting
mechanism as will be hereinafter described. Supported by the cylinder D1 from

page_text: brackets D2 are sustaining and guide rods D35. The upper ends of these
rods D35 are engaged to brackets or arms C24 (Fig. 3) and these brackets or
arms C24, sustain and carry the casing C23 and from this casing C23, are
supported the upper works of the machine as will be hereinafter described. On
the casing DS, are arms 19, (Figs. 12 and 3) which slide against and are guided
by the rods D 35 thus guiding the casing D8, in its vertical movement. Engaged
to the lower end of the casing C23 is what I will term the pressure plate C20.
The parts which I have just described constitute the general frame work of the
machine. I will first describe in detail the
MECHANISM FOR PICKING UP THE FLASK AND PROPERLY PLACING IT IN THE
MACHINE.
F4, represents the chill and F5 is the flask bolted thereto, but for the purpose
of explanation I will term the flask and chill together, the flask, it being under-
stood that when in the description the term Hask is used, i mean the flask
attached to the chill. Extending from each side of the flask are trunnions F 99
(the flask is shown in detail in Fig. 93, Sheet 13).
Suitably supported adjacent to the base of the machine is a cylinder H,
(Fig. 105) and working therein, is a piston head H1 and a piston rod H2
attached to the latter. Above the cylinder are guides H3. Working in these
guides is a socket H4, the latter being engaged to, or a part of, the piston H2.
Carried by this socket is a rod H 5. The lower end of the rod enters the socket
as at H 6 and is provided with a collar H7, to insure a perfect fit in the socket.
The upper end of this rod H 5, is steadied and supported by the arm H 8 which
extends over and is engaged to the standard H 50 which extends up from the
floor. Engaged to the rod H 5, by the bearing H9, is a crane arm H 10. The
vertical movement of the bearings and arm is limited by the collar H11 on the
rod, the crane arm being free to swing on the rod. Extending out from the
standard H 50 is a brace H 51, to which are engaged the guides H 3, the con-
struction being thereby properly stiffened. The crane arm is shaped as shown in
Figure 105 and Figure 107, with two arms H 12-H 13, each one provided on its
extremity with a suitable recess adapted to receive the trunnions F 99 on the
flask F5. On the arm H 10 is a suitable handle or projection H 14, whereby
the arm H 10 may be easily thrown when necessary. Located on the inner face
of the arm H 10, is a lug H 15. Engaged also to the inner face of the arm H 10
and above the lug H 15, is a spring catch H 16, with a bevelled end H 17. (See
Figs. 105, 106, 107 and 107**). When as later described the crane arm deposits
the flask in the machine and moves on down, the bevelled faces H 17 and H 18
acting against each other, will throw the catch out against its spring pressure
and the mask thus be released. On the flask F5, is a lug H 18, (Figs. 93 and 94).
As the flask is dropped into the crane arms, this lug H 18, passes the bevelled
end H 17 of the spring catch H 16 and engages under the latter, further downward
movement being limited by the lug H 15, so that the flask is steadied and held in
its proper horizontal position. This spring catch H 16 also has the face H 17¹
which engages the flask bevelled and the corresponding face H 18¹ of the flask
is similarly bevelled for a purpose explained. On the inner face of the arm H 10
13 a lug H 19. H 20 (Figs. 106 and 107) is a leaf spring, shaped as shown in
Fig. 106, one end being engaged to the standard H50 while the other end is
free and is adapted to be struck by the lug H 19 when the arm is swung in
toward the machine. Pivoted to the inner face of the arm H 10, is a bevelled
catch H 21. The catch being spring impelled in the usual well known manner.
Thus when the arm is thrown in toward the machine, the lug H 19, bears on
the free end of the spring H 20 and is cushioned there by the bevelled catch H 21
engaging the standard as shown in Fig. 107. Also located on the inner face of
the arm H 10 is another lug H 22. Pivoted on the brace H 51, is a bell crank
lever H 23 shaped substantially as shown in Figure 107, one arm being curved
outwardly and upwardly as shown at H24. Pivoted to the arm H25 of this

page_text: lever, is a rod H26, shown by dotted lines Fig. 100. Pivoted to the lower end
of this rod, is an arm H 27, extending from the valve stem of the valve H 28 which
controls the exit of the air from the cylinder. This valve H 28 is of the usual well
known release valve form with a spring on its stem for returning the valve to
its normal or closed position when the strain on it is released. It will thus be
seen that as the lug H 22, on the arm H 10 strikes the arm H 24 of the lever H23,
it will tilt the arm H 25 downward. This will throw the rod H 26 downward,
will tilt the valve arm H27 down and open the release valve for the cylinder,
thus allowing the piston head H1 and rod H5 together with the arm H 10 and
its load, to drop. As the arm H 10 descends, the catch H 21, rides off from the
flange on the standard H 50, and simultaneously therewith, the lug H 22 reaches
the curved portion of the arm H24, and thus releases the pressure on said arm
so that the spring in the valve can close the latter. This of course takes place
when the piston head has reached the lower end of the cylinder and the crane
arm H 10 has deposited the flask properly in the machine. Guides H3 form
shoulders against which the socket H4 strikes and the downward movement of
the piston head is thereby properly limited. Of course the moment the catch H 21
rides off from the flange on the standard H 50, the spring H20 comes into play
and throws the arm H 10 out ready to pick up another flask. Extending from
the cylinder H, is a suitable pipe H 29 controled by a suitable valve, and as
the crane arm swings out in its lower position, it is placed under the trunnions F99
on the flask, the valve in the pipe H 29 is opened, the pressu e fluid is allowed
to enter the cylinder H, the crane arm is thereby lifted with its load and swung
in as above described. In order to facilitate the ready picking up of the flask
by the crane arm H 10, I bevel the ends of the portions H 12-H 13, as at H 30,
(Figs. 106-107) and I also provide on said arm upward projections H 31, thereby
insuring the proper registration between the trunnions 99 on the flask and the
recesses in the arms to receive them.
When the flask is placed in the machine as just described, it is supported
by the cylinder D8, through the mechanism which will be subsequently
described, and it is now ready to receive the outer false flask. I will now describe
the
MECHANISM FOR DROPPING THE OUTER FALSE FLASK ONTO THE FLASK PROPER.
Supported from the casing C23 (Fig. 87) is what may be termed a casing C 30.
Extending from this casing are two arms E as shown in Figure 87, and in dotted
lines Figure 88. Pivoted between these arms is a bell crank lever E 1. Pivoted
to one arm of this lever is a rod E2. On the lower end of this rod E2, is a
projection E3. As the crané arm and the flask which it carries, descend, one
trunnion F 99 on the flask strikes this projection E3 and pulls the rod E2 down-
ward, thus tilting the bell crank lever E1. Pivoted to the bell crank lever E1
is a rod E4, which extends back and is pivoted to an arm E5 depending from
the rod or shaft E6, so that a tilting of the bell crank lever gives the shaft E6
a partial revolution. Depending from the shaft E6, are two arms E7 shown
in Figures 88 and 89. Pivoted to each of these arms is a rod E 8. Each of these
rods E8, is pivoted to a bell crank lever E9, the latter being pivoted to the
casing C23. Pivoted to each bell crank lever E9, is a rod E 10. Extending
from the opposite sides of the cylinder C 23 are arms or brackets E 11 and pivoted
to each of these brackets is a bevelled catch E 12, provided with a spring E 13
for keeping them in their normal engaging position. The rod E 10 extends
through the upper end of this catch E 12 and is provided with an adjusting
nut E14, so that the proper position of the catches may be regulated. As wil!
be seen by reference to Figure 89, these bevelled catches E12, engage and hold
the outer false flask C28, until released. This false flask (as well as the inner
false flask which I will presently described) is made up of horizontal sections C286
(Fig. 3). These may be any desired height. In Fig. 3, I have shown the section
above the lowest section to be one half the height of the lowest section and the

page_text: top section to be one half the height of the middle section. By engaging the
guide rods C282 to the lowest section and providing the other sections with
slotted ears to engage the guide rods the height of the false flask can be changed
without taking the lowest section out of the machine. When the upper sections
are in place they may be bolted together in any suitable manner. Obviously
through the mechanism just described when the rod E2, is pulled down, the
catches E12 will release the outer false flask C28 and permit it to drop onto
the flask F5. Engaged to the outer false flask C2S (Fig. 1) are guide rods C28,
extending up through the arms C28' engaged to the cylinder C23. Above these
arms are cups C284 and on the upper end of each rod is a dise or plunger C28.
Thus, as the flask descends as above described, the disc or plunger C 283 enters
the cup C28 and the descent of the flask is cushioned.
On
THE SPRUES AND MECHANISM FOR DROPPING THEM INTO THE FLASK.
Preferably an integral part of the cylinder C23 and supported by ribs C25, is
an inner casing C26. (shown in Figs. 3 and 10). On the upper end of this
casing (26, is a flange C33 (Figs. 3 and 16). 132 is a hollow casing supported
in the casing C 26 and engaged thereto by the flange B5 bolted to the flange C33.
The upper end of this casing B2, is interiorally threaded as at 13, (Fig. 25).
and engaged in said threads is a ring B 10. On the ring B 10, is a hearing BS
and underneath the ring B 10 is another plate B 11, the bearing B8, having
proiections which extend down to the plate B11, and the latter is engaged to
Eaid projections. Pivoted in the bearing BS, is what I will term a crank
sleeve B9 carrying a disc B9. Supported in the crank sleevo B9, is a crank
shaft B 10 having a crank arm B 10' (Fig. 25). Pivoted to the arm B10' is
a rod B 14. Engaged to the under side of the plate B 11, is a guide plate 13 15,
shaped as shown in Figures 31 and 33, with a central channel shown in Figure 33.
In this guide plate and free to move vertically therein, is a fitting B16 having
a projection B 16 and the lower end of the rod B 14 is pivoted to this projec-
tion B 16. Extending through the fitting B 16¹ and free to turn therein, is a
rod B 16 the upper end of said rod being turned at right angles as shown in
Figure 33, to hold it in the fitting while below the fitting is a spring B 163
adapted to normally keep the rod from turning on its longitudinal axis.
the lower ond of the rod B 16 is a foot or projection B 16 (shown in Figs. 31
and 2 and by dotted lines Fig. 33). Sliding vertically in the plunger B 17 (Fig. 22)
(the construction of the latter will be later described), is a fitting B 18 having
arms B18 which extend through vertical channels B 192 in the plunger B17
and these arms B 181 carry the sprues B 20, the sprues being suitably fixed to
said arms.
In the present instance. I have shown three of these sprues but the
number may of course be varied. I wish at this point to call attention to the
fact that throughout my specification and claims I have termed these pins B 20 for
forming the sprue holes in the mold "sprues." Technically they are sprue
forming pins but I have adopted the term commonly applied to them in the
foundry. In Figure 30. a part section of one of these sprues is shown. It is
hollow and has its end bevelled as at B 202 and is provided on the interior with
a plug or diaphragm 1 201, having a restricted orifice B 203. In the face of the
plunger B 17, and registering with the channels B 192, are concave depres-
sions B 19 to support and guide the sprues in their movements. In the stem
of the fitting B 18 is a series of notches B 182 and in these notches the foot B 16+
previously described, engages, On the lower end of the interior of the
plunger B 17. is a cup 1321 and on the fitting B 18. is a diaphragm or plunger B 19
to cushion the descent of the sprues when they are released and dropped.
Referring now back to Figures S7, SS and 89. extending up from the shaft E 6.
is an arm E 15 and pivoted thereto is a rod E16. This rod extends to and
is pivoted to an arm E 17 on the vertical shaft E 18, the latter extending up from
the casing 023, (as shown in Figure 87). On the upper end of this vertical
rol or shaft E 18, is fixed an arm E 19. This arm E 19 extends through a slot in

page_text: the face of the casing B2. Engaged to the under side of the plate B 11 is the
bracket E 20 shown in detail in Figure 90. Carried by this bracket is a rod or
shaft E 21 having on its upper end an arm E 22 and on its lower end an arm E 23
and a spring 24 for keeping the shaft normally in the desired position. The
arm E23, when the rod E21 is revolved strikes a lateral projection on the upper
end of the rod B 162 and revolves the rod and as before explained, the foot B 16'
of this rod engages the notches B 183 of the sprue fitting B 18 so that a revolu
tion of the shaft E 6, as before explained, pushes the rod E16, throws the arm E 19
and this arm striking the arm 122, revolves the arm E21, consequently moves
the arm 23 and the latter revolves the rod B 162, thus releasing the foot B 16',
from the notches in the sprue fitting B 18 and allows the latter together with
the sprues to drop down onto the pattern. The descent of the sprues is cushioned
Ly the plunger 13 19 entering the cup B21 (Fig. 22). In addition to this, it
will be observed that the sprues are hollow as shown in Figure 30. On the
pattern R3 shown in Figure 3, are projections F 10, having bevelled ends as
shown, and as the sprues descend the end of each sprue passes over one of these
projections. The fitting between the two is more or less snug and the air in the
sprues thus acts as a cushion for the first blow of the sprues in striking the
pattern, but the orifice 13203, allows the air to escape and allows the sprues to
gradually settle down to their proper place. The air passage through the sprues
also performs another function. When the sprues are withdrawn after the mold
is formed, the air passing down through the sprues, destroys any vacuum caused
by the stripping of the sprues or patterns. Above I have mentioned the bevelled
end B20 of the sprue. When the end of the sprue fits over the projection 1 10
on the pattern (or the said projection could be on some other sprue supporting
portion) the bevelled-end forms- a thin connecting web between the casting and
the plug formed by pouring in the sprue hole so that said plug can be easily
knocked off from the casting without either leaving a projection on the casting
or a recess in the same.
MECHANISM FOR DISCHARGING INTO THE FLASK THE PRELIMINARY AMOUNT OF
SAND.
Substantially simultaneously with the descent of the sprues as above explained,
the preliminary discharge of sand takes place. Supported from the casing C23,
and preferably a part of the casing C30, is a sand chute C41, having an open-
ing C31 (Figs. 3 and 16) at its lower end. An inclined diaphragm C42 leads
from the lower end of the chute C41 down to a point adjacent to the opening C43
in the inner casing 026 where the sand is discharged as hereinafter explained.
Mounted above the chute C41 are the sand reservoirs and hopper constructed as
follows: Mounted directly on the chute C41 is a cylinder A 9 (Fig. 3) and above
this mounted a second cylinder A 30, A 31. The abutting ends. of the
cylinders A 30 A 31, are engaged together by an interiorally threaded ring A 11
engaging the exterior threads on the cylinders A 30, A 31, (as shown in Figure 48).
Mounted on the upper end of the cylinder A31, is another cylinder A 32 and
mounted above this, is still another cylinder A 33. The various cylinders just
described with the exception of the abutting ends of the cylinders A 30, A 31, are
engaged together by flanges as shown in Figures 37 and 38. Above the cylinder A 33,
is a hopper A S. The various cylinders which I have just described constitute
sand reservoirs. They are shown circular in cross section but need not necessarily
be this shape. Preferably they are mounted one above the other as shown, the
reservoirs being separated from each other by suitable horizontal doors or valves
which when opened permit the sand to pass downward. The lowest set of doors
I have designated at A 10 (Fig. 3), the next set above A 34 and the upper set A 35.
The sets of doors are substantially duplicates of each other and are shown in plan
view Figure 39. Each set is composed of a centre piece A 36, trunnioned on a
centre line as at A 37, A 38, and two side doors A 39, A 40, also trunnioned as
A 41, A 42, A 43. It is of course obvious that the specific construction-of these
doors is immaterial, but I prefer the form shown. The adjusting ring A 11,

page_text: is for the purpose of increasing or decreasing the size of the reservoir between"
the doors A 10 and A. 34, so that the proper amount of sand for the preliminary
discharge can be regulated. Engaged to the trunnion A 38, is a gear A 16,
toothed on two opposed portions of its periphery A 44, A 45. The teeth on the
periphery of this gear A 16 extend only across a portion of the periphery, the.
balance being smooth as shown at A 46 (Fig. 38) and this smooth portion is pro-
vided with a notch A 49 (Fig. 41). On each trunnion A. 42, A 43, is a segment,
gear A 15, shown in detail in Figure 42 and shown also in Figure 37. These:
segment gears A 15 mesh with the teeth A 44, A 45 on the gear A 16, so that a.
revolution of the gear A 16, and a consequent movement of the door A 36 also
moves the gears A 15, and consequently the doors A 39, A 40. Surrounding each
trunnion A 42, A 43, is a collar A 153 having its face toothed as at A 154. This
collar A 153 is fixed to the casing. Surrounding the pinion A 42, is a spring A 151
one end engaged to the pinion A 15, while the other end is engaged to the ratchet
ring A 153, the ratchet ring having its face adjacent to the collar A 153 toothed
to correspond with the face of the latter, so that when the pinion A 15 is revolved,
it does so against the pressure of the spring A 151 and compresses the latter.
The tension of the spring can of course be regulated by the ratchet ring A 152..
These springs A 151 are for the purpose of tilting the doors to dump the sand
when the doors are released (by mechanism which I will presently describe).
inasmuch as the construction of the doors, as shown in Figure 39, is such. that
the doors are balanced when the weight of the sand is on them. If additional
spring tension is desired, other springs might he located at any desirable point.
Extending from the cylinder A 9, is a projection A 162 (Fig. 38) and pivoted
thereon is a spring catch A 161 adapted to engage in the notch A 49 in the peri-
phery of the gear A 16, to normally hold the doors closed against the spring.
pressure of the springs A 151. Pivoted to the rod E 16 below the arm E 17. is.
a link E 25 and pivoted thereto is another arm E 26, on the end of the shaft E 27,
all shown in Figures 87 and 88. This shaft E 27 is also shown
by a dotted line in Figure 37 and is shown in detail in Figure 48*
Extending from the upper end of this shaft E27 is an arm or projection E 28.
which terminates just above the tail of the catch A 161, so that a revolution of
the shaft E27 through the links E25, E 26, will tilt the catch "A 161 out of the
notch and allow springs A 151 to tilt the doors and dump the sand. The latter
passes down through the chute C41 and slide C42 through the opening C43' and
drops down into the flask, just a short time after the sprues."
MECHANISM FOR DROPPING THE INNER FALSE FLASK ON TO THE RUNNER Box.
I have previously called attention to Figure 93, wherein is shown the construc-
tion of the flask. Referring now to that figure and the adjacent Figure 94,
F51 are webs extending from the periphery of the flask inward and supporting
the runner box F 58. These ribs preferably have their upper and lower edges
more or less sharpened, (Fig. 94), so that the sand can readily pass in either
direction without meeting an abutting edge. For the same reason the lower edge
of the runner box is more or less sharpened as at F 16. It will be observed by
reference to Figure 93, that the inner faces of the flask F5 and chill F4 where
they join, form a continuous line or face without a substantial break or angle.
This is accomplished by making the face F 14 of the flask, continuous without
an angle or pocket and by curving or tapering the corner of the chill as at F 15
and having the faces F 14, F 15, register with each other. Thus when the pressure
is applied, the curved or tapered surface throws the sand out against the portion
of the pattern opposite the point where the face F 15 terminates and .compresses
it tightly against the pattern. This is a material advantage where machine
pressure is used, as in my case. C29. (Fig. 3) is the inner false flask movable
vertically within the casing C26 and guided by the rods C 291 engaged to the
flask and extending through suitable orifices in the flanges B5. C33. This flask
is held in its upper position by the catch E 29 (Fig. 89) and the latter is pivoted

page_text: on a projection extending up from the casing C23 and is tilted out to release
the flask by pressure on the upper end obtained as follows: Supported in bear-
ings E 30 on the casing C23, is a rod or shaft E 31 (Fig. 88) having on its ends,
handles E 32, to be grasped by the operator. Extending from the shaft E31,
is an arm E 33 and pivoted thereto is a rod E34 which is pivoted to a bell
crank E 35 supported from the casing C23. The end of this bell crank E 35
bears on the end of the pivoted catch E 29, so that a revolution of the shaft E 31,
tilts the bell crank lever E 35 and releases the catch E 29 from the false flask C 29
and allows the latter to drop down on to the runner box. Of course the operator
drops this inner false flask as soon as the preliminary sand has dropped down into
the flask proper and the runner box.
THE PLUNGER AND MECHANISM FOR DROPPING IT INTO THE FLASK.
In connection with the description of the sprues, I have already mentioned
the plunger, and I will now specifically describe the same. Referring to Sheet 7,
B 17, is the plunger proper. It is tapered on its lower end as shown and slides
vertically in the casing B2, being properly guided by the bearing ring BG,
engaged to the lower end of the casing B2. This bearing ring also has a function.
of a pressure plate or ring. Its under face is made concave as shown at BG¹
with a downwardly projecting shoulder or flange B (2. Thus as the sand is
forced up against the ring as will be hereinafter described, it packs tightly against
the ring but is not thrown out laterally as would be the case if thd flange. B 62
was not present. Referring now to the crank sleeve B9 (shown in detail Fig. 28)
193 are ears extending from said sleeve and constituting a crank and in these
cars is pivoted the connecting rod B 12, and this connecting rod B 12 is. pivoted
to the plate B 13. Pivoted to this plate B 13 is a spring catch 13 13', the said
catch adapted to engage the plunger, when it is raised against the plate 1.13
and hold the two together until the catch is disengaged. Referring to Figure 88,
on the shaft E31, is an arm E36, and pivoted thereto, is a rod E37. The latter
is pivoted to an arm E38 on the vertical shaft E 39. On this shaft E 39, is another.
arm E40. This arm E 40, passes through a slot in the casing B2 and terminates
immediately under the plate B 11, (Fig. 25). When the plunger and its accom-
panying plate B 13 are raised to the maximum height, a revolution of the
shaft E 39, will throw the arm E 40 against the catch B 131 and will thus release
the plunger and allow it to drop. The mechanism for raising the plunger to a
point where the arm E 40, can strike the catch will be later described, suffice
it to say, that when the operator revolves the shaft E31, the plunger is at its
maximum height, and is released from the plate B 13, and allowed to drop. In
the flanged upper end of the plunger and on opposite sides of the plunger, are
two recesses B 132 (Fig. 24). Projecting from the inner face of the casing B2,
are lugs B 22, and mounted in these lugs are screws B 24 provided on the upper
ends above the lugs with pinions B 23. The lower ends of the screws are journaled
in the bearing or pressure ring B6. Mounted on the screws is an adjusting
ring B 27. To raise and lower this ring the doors B4 in the casing B2, (Figs. 25
and 26). are opened and by means of a suitable rack bar, the pinions and con-
sequently the screws are revolved thus raising and lowering the ring B 27. Sur-
rounding the screws above the ring B27, are springs B 26, and above the springs
is a buffer plate B 25. When the plunger is released from the catch B 131, the
flanged upper end B171 of the plunger strikes the buffer plate B 25, and the
descent of the plunger is cushioned thereby. When the plunger drops, the lower
end enters the runner box F 52 and as the patterns and runner box ascend they
carry the plunger back up with them until it strikes the plate B 13 as herein-
after explained, and it then becomes a part of the pressure mechanism together
with the ring B6 and the pressure plate C 20.
MECHANISM FOR DROPPING INTO THE FLASK AN ADDITIONAL LOT OF SAND.
Referring now to Figure 3, it will be remembered that the first lot of sand was

page_text: contained in the reservoir between the doors A 10 and A 34 and that there is an
additional lot of sand in the reservoir.between the doors A 34 and A 35.
It will
of course be understood that the preliminary lot of sand filled the flask and the
runner box and that when the plunger and the inner false flask were dropped
there remained space in the inner false flask and to a greater or less extent in
the runner box to be filled with sand. The mechanism for dropping this additional
lot of sand I will now describe. The construction of the doors A 34 is substantially
the same as the construction of the doors A 10, (shown in Fig. 39), the exception
being in the device for releasing the doors to allow the sand to drop. On the
trunnion A 38, of the middle door is fixed a dish shaped gear A 14 (shown in
Figs. 38 and 40). On the inner face of the periphery of this gear A 14, is a
notch A 143. Revolving on the trunnion A 38, is a bevelled gear A 14¹ held there
by the collar A 14 keyed to the trunnion and carried by this beveled gear is
a spring catch A 148 adapted to engage in the notch A 143. The purpose of the
bevelled gear A 141 will be later explained. Suffice to say, that the catch A 14ª
engaging in the notch A 143, normally holds the doors closed against the spring
pressure of the springs A 15. Pivoted to the end of the rod E37, (Figs 87
and 88) is a link E41, the other end being pivoted to the arm E42 on the
shaft E 43. This shaft E 43 extends up and terminates adjacent to the catch A. 143
where there is a projecting arm E44. A detail of this shaft is shown in
Figure 48** and it is also indicated by a dotted line in Figure 37.
Thus a
revolution of the shaft E43 through the arm E44, tilts the catch A 142 out of
the notch A 143 and allows the springs A 15¹ to tilt the doors A 34 and dump the
sand above them down into the inner false flask. Some of this sand may overflow
this flask and drop on to the sand in the outer false flask and if necessary the
operator then smooths it off by hand before the pressure is applied, as hereinafter
explained. It will be thus seen that a manual revolution of the shaft E 31 drops
the inner false flask, drops the plunger and drops the additional sand necessary
to fill up the inner false flask around the plunger.
THE PATTERNS AND MECHANISM FOR SUPPORTING AND MOVING THE SAME.
Referring now to Figure 3, it will be observed that the pattern illustrated in
the present instance is for forming a car wheel mold, and I wish at this point
to state that while I have herein shown a specific form of pattern, yet it is obvious
that my machine is adapted for forming any desired shape or form of mold and I
do not wish to be understood as limiting myself in this direction in any particular.
So, also, in the cope machine shown in Figure 3, I have illustrated the pattern
as composed of three pieces but as will be seen when I have completed the
description of the mechanism, the latter is adapted to manipulate a pattern of
any desired number of pieces and to form a mold of any desired surface. It will
be observed that some of the pattern parts are provided on the downward extend-
ing legs with lugs as for instance, the lug R4 on the pattern R 3 (Fig. 128) and
the lug 6 on the part T3 (Fig. 118) and the lug T7 on the part T1 (Fig. 118).
These are for the purpose of providing shoulders or bearing parts on the pattern
parts which are out of vertical alignment with other bearing parts in the same
section of pattern so that the pattern can be carried at different stages of its
manipulation by different portions of the pattern and flask supporting mechanism.
These lugs or bearing parts are also usually out of horizontal alignment and by
regulating these bearing parts with respect to each other, the pattern parts can
be picked up at any stage of the operation by any desired portion of the supporting
mechanism as hereinafter described. As explained at the beginning of my
description the piston head D4 and the casing DS, constitute the flask and
pattern supporting mechanism and I will now describe the same in detail.
Extending up vertically from the piston head D4, and properly secured thereto,
are three standards D 26 carrying in their upper ends a crank shaft D21 shown
also in detail in Figures 73 and 74. This crank shaft extends out through the
casing D8 and is provided within the casing with two cranks D 65. Engaged to

page_text: It
these cranks are pitmen D 39, 140, (shown in detail Figs. 65, 66, 67 and 68).
The lower ends of these pitmen are pivoted to the trame D 17 at D 17",
(Fig. 54). The shape or tuis frame 1 17 is shown in Figs. 54 and 55.
is what may be termed a spider frame with an upper J'im or ring
exteriorally threaded as at 117 and engaged to this rim by said threads, is
a ring 1 178, the latter being adjusted verucally through the medium of the
threads. This frame is given a vertical motion through the crank shaft D21, as
hereinafter explained. it is guided and steadied in its movement by the bevelled
guides D 17 sliding in the grooves D233 in the guide posts 123, which extend
up from and are secured to the piston head. The shape of these guide posts is
shown in Figures 62, 63 and 64. It is also guided and steadied by the
guidés D 173, (Fig. 54) and traveling against the guide pieces D53, on the
casing D8, (see Fig. 12). F2, is a ring approximately of angle iron shape in
cross section (see Fig. 3) constituting the chill support. It is shown in detail in
Figure 97. The upwardly extending flange F 17 of this chill support is recessed
as shown at F 18 (Fig. 97) and this portion of the chill support constitutes the
portion of the pattern to form the outer edge of the tread of the wheel casting
beyond that formed by the chill. This recess would of course make a corre-
spondingly raised portion on the tread portion of the mold. The formation of
this raised portion of the tread mold is old, the novelty in my construction being
the formation of the recess (to form this raised portion) in the chill support
instead of the pattern. It will also be observed that the horizontal portion F19,
(Fig. 97) has its top surface inclined as shown with the chill supporting ribs F20
at intervals. The underside of the portion F 19 is provided with channels F21.
The purpose of the above formation is to allow any sand that may accumulate
on either side of the portion F 19 to clear itself and thus give the flask a square
bearing. This chill support rests upon the adjusting ring D 178 and the chill-F4
and flask F5, rest upon the chill support F2 so that as will be seen the flask is
carried and supported from the piston head by the frame: D 17. It will be
observed by reference to Figures 54 and 55 that the frame D 17 is made up of
four vertical legs and on the inner face of each of these legs, is journaled an
adjusting screw D 18, (Figs. 54 and 55), the lower end resting in the socket D 17,
while the upper end is journaled in the bracket D 182. Each screw is provided
with a pinion D 18'. Meshing with each of these pinions is a toothed ring D 19,
(shown in detail in Figs. 69 and 70) said ring resting upon the shoulder D 19
of each leg. D 42, (Figs. 78, 82, 83 and 84) is a ring provided with lugs 142,
said lugs having threaded orifices through which the screws D 18 pass, so that a
revolution of the screws through the medium of the ring D 19 will adjust the
ring D 42 vertically with respect to the frame D 17. The interior of the periphery
of the ring D 42 is screw threaded as at D 422. D 43, (Figs. 85 and 86) is
another ring having the exterior of its periphery threaded, as at D 431, to fit the
threads D 42 of the ring D 42, so that the inner ring D 43 can be adjusted verti-
cally with respect to the ring D42. On the ring 142 are depending lugs D44
and D44', and journaled in said lugs, is a crank shaft D 46. Pivoted in the
crank arms D 461 of the same, is a pitman D 462 and the latter is pivoted in the
ring D41. The, mechanism just described is duplicated on the opposite side of
the ring D 42 as shown in Figure 83 and also Figures 3 and 128, so that both
sides of the ring will be simultaneously moved. Keyed to each shaft D46 is
a beveled gear D 50. Carried in the lug or sleeve D44 is a vertical shaft D45
and keyed thereto is a bevelled gear D 48 which meshes with the bevelled
gear D 50 so that a revolution of the shaft D 45 revolves the shaft D 40 and moves
the ring D41 vertically. The mechanism for revolving the shaft D45 will be
later described. The shaft D45 (Figs. 3 and 128) extends down to the bottom
of the casing D8 where it is journaled and it is here provided with a bevelled
gear D 67, which meshes with the bevelled gear D 68 on the horizontal shaft D 69.
On the opposite end of the shaft D 69, is a bevelled gear D 70, which meshes
with a bevelled gear D 71 on the vertical shaft D 72. This shaft D 72 corresponds

page_text: in function with the shaft D 45 and operates a pitman D 463 on the opposite side
to raise and lower the rim D41. D 15 (Figs. 56 and 57) is another spider frame
and on each of the four legs of the same is a guide D 151 which slides against
the guide D 27 on the inner face of the casing DS (Fig. 12). The lower end of
each of these guides D 151 forms a shoulder adapted to rest upon either the
ring D 43 or D41 as the case may be. The upper end of the frame D 15, is
shown in Figure 57 and consists of three concentric rings M1, M2 and M 3.
Each of these rings has a function in supporting and moving the various parts of
the pattern during the pressing and stripping operation. The rings are shown
in section and can perhaps be better understood by reference to one of the dia-
gramatic views, say, for instance, Figure 108. 112, is another spider frame
shaped as shown in Figs. 58 and 59. This frame is supported from the eccentric
shaft 1) 22 (see Fig. 4). The shaft is also shown in detail in Figs. 60 and 61.
It is journaled in the standards D 25 extending up from and secured to the piston
head D4. On the eccentric shaft D 22, are the usual eccentrics and engaged
thereto are the straps D 221, the latter being pivoted to the frame D 12 by the
pivots D 223 passing through the orifices D 124, (Fig. 58). In the upper end of
the frame D 12, is a slot 1 122 to permit the top of the frame to pass above the
eccentric shaft and also another slot 1) 123 to permit the frame to pass above
the crank shaft D21. The frame D12 is guided in its vertical movement by
the guides D 121 (Fig. 58) traveling in the guides D 231 of the post D 23 (Figs. 62
and 63). It is also guided by post D 11, (Figs. 4 and 128) and also shown in
detal Figs. 75 and 76), which extends up from the piston head D4. Secured to
the lower end of the frame D 12 is a plate D 14. It will be observed by reference
to Figures 12 and 128, that the legs of the frame D 15, pass through the slots D) 14¹
so that the lower end of the frame D 15 can at a certain stage in the operation,
rest upon and be supported by the plate D 14. and yet be free to move vertically
independent of the frame D 12 because of the slots D 14'. The upper end of this
frame D 12 is provided with an outer ring P1, and an inner plate or ring P2
and these rings are shown in section in diagramatic view (Fig. 108). It will be
seen from the above description that all the parts which directly support the
pattern and flask are in turn supported from the piston head, and that the latter
has a vertical movement in the cylinder D1. Thus all the parts are carried
upward by the piston head while in addition to this upward movement the
frame D 17 has an auxiliary or additional vertical motion through the crank
shaft 121 and the frame D 12 has an additional vertical movement through the
eccentric shaft D 22 and as the frame D 15, is supported either by the frame D 17
through the medium of the rings D41 and D 43, or by the frame D 12, through
the medium of the bottom plate D 14, (depending upon the stage of the operation),
the said frame D 15 will move with the part that is carrying it. In addition to
the parts just described as being movable vertically with respect to the piston
head, there is provided on the upper end of the casing D 8, the sectional support-
ing rings F1 (shown in Figures 13 and 14). Throughout most of the operation,
the frame D 17, supports the flask, but when the frame D 17 is lowered to the
full extent, the ring D 177 drops down below the level of the section ring F1
and the latter carries the chill support F2 and consequently the chill and flask F4
and F5.
I will now describe the mechanism for revolving the two crank shafts D 21
and the eccentric shaft D 22 and thus moying the parts supported respectively
by these shafts. Referring now to Figures 1 and 2, it will be observed that the
arms D2, are connected by a cross arm or web D 66 and resting on this cross
arm is a casing G. The lower end of the casing is bolted or otherwise secured
to cross arm D 66, while the upper end has arms G1, which extend out and engage
the rods D 35. The face of the casing is provided with a door G2 and tripping
mechanisms for the various automatic mechanisms in the machine are contained
within the casing. Mounted in the casing and extended outside of the same as
shown in Ficure 1, is a shaft G 3, and located thereon, is a lever G4, for revolv-

page_text: ing the shaft. On the shaft is an arm G5 and pivoted thereto is a rod G 6,
which extends down and is pivoted to the arm G7, on the stem of the valve
governing the fluid inlet pipe for the cylinder D 1, so that a tilting of the lever G 4
will open or close the valve G8 as the case may be. As before explained the
admission of fluid into the cylinder D1 moves the piston upward carrying with
it all the parts mounted thereon. As will be seen by reference to Figure 128,
the shaft D21 extends through the wall of and into the casing G and passes
through a slot G9 (Fig. 2) in the back of the casing. Located on the shaft D21
(Fig. 78) but adapted to revolve loosely therebon, is a sleeve D 73, carrying a
bevelled gear D 74 which meshes with the bevelled gear D 75 on the upper end
of the shaft D 45. Located on the sleeve D 73 is a segment gear G 10 (shown in
Figures 77, 78, 79 and 128). This segment gear 10 is also shown in detail
in Figures 84* and 84** where as will be seen, there is the segment G11 and
two arms G 12 and G 13 the arm G 13 being out of line laterally with the seg-
ment G 11 as shown in Figure 84* for a purpose hereinafter explained. Keyed
to the shaft D21, is another segment G 14 shown in elevation in Figure 128.
The segment G 10 and segment G 14 are duplicates of each other. Extending
up from the bottom of the casing G is a piece G 15 (Fig. 1) which acts as a
guide when the parts are being returned to their normal position, as hereinafter
explained. Above this piece 15 is a piece G 16, having a rack bar G 17 on
its face or edge and provided on its upper end with an arm G 18, which carries
a screw G 19. The parts just named are substantially duplicated as shown at G 20,
G 21, G22, G 23 and G 24, in both Figs. 1 and 2. It will be observed that the
end of the screw G 19 is at a slightly lower level than the screw G 24. Now as
the piston head raises as before explained the segments G 10, G14, and the
respective parts to which they are attached, are carried up until the arm G 13
on the segment G 10, strikes the screw G 19. The continued upward movement
of the piston causes the sleeve D 73 (to which the segment G 10 is keyed) to
revolve and this of course revolves the shafts D 45 and D72 and thus the pit-
men 1462 are moved and the ring D41 dropped. The ring D41 with the parts
which it carries have considerable weight and to prevent the ring when the
shafts 146 are tripped, from falling too rapidly, I provide on the ring 1 42 a
series of brackets D 77 each carrying a dash cup and on the ring D 41, a
plunger D 78 (Figure 81) for each cup. By regulating the exit of fluid from the
cups the descent of the ring D 41 can be accurately timed with the ascent of the
piston. A half revolution of the shafts D 46 will lower the ring D41 to the
maximum extent. Up to this time the frame 115 has been resting on the
ring D 41 but when the latter is lowered as just explained the frame 15 drops
down and rests on the ring D 43. By the time the ring D41 is lowered as just
explained, the arm G 13 of the segment G 14 strikes the screw G24 and this
segment being keyed to the shaft D21 throws the latter off its center and allows
the frame D17, to drop, together with the frame D 15 which at this time is
resting on the ring. D 43. Attached to each leg of the frame D 17 through the
medium of the lug D 172 is what I will term a plunger rod D17º, having on
its lower end a plunger. Located on the piston head D4, under each plunger
is a dash pot or cup D24, (shown in detail in Fig. 71), and the plungers D 179
entering these cuns, the descent of the frame D 17 is cushioned. By regulating
the discharge of fluid from the cups, the speed of the descent of the frame D17
can be timed so as to co-operate with the advancing upward movement of the
piston head, or in other words, the descent of the frame 1 17, can be so regulated
as that it will remain stationary with respect to the pressure plate above while
the piston head D4 and the other parts are being moved upward. Before the
frame D17, reaches its lower limit with respect to the piston head D4, the
frame D 15 has struck the plate D 14, on the frame D 12,.and is thereupon carried
upward by the frame D 12 which is being moved by the piston D4, the frame D 17,
as before explained remaining stationary with respect to the pressure plate above.
As the piston head D4 continues to move upward (with the frame D 17 and con-

page_text: sequently the ring D 178 remaining stationary with respect to the pressure plate
above), the sectional ring F 1, which is being carried upward by the piston
head D4, will reach the chill support F2, and as the flask F5 is bearing against
the pressure plate above, the piston D4 has necessarily reached its maximum
upward movement and thereupon the frame 1 17, settles down slightly with
respect to the piston head D 4 and reaches its maximum depression with respect
thereto. This carries the ring D 178 away from the chill support and leaves the
latter supported by the sectional ring F 1.
It will now be seen that I have brought all parts of the pattern up into the
flask and have created the necessary pressure on the same to form the mold. The
exact function of each movement and each pattern. part and flask in attaining
this pressure will be later described. Meantime and simultaneously with the
upward movement of the pattern into the sand, I insert the vent pins into the
mold.
MECHANISM FOR INSERTING THE VENT PINS INTO THE SAND.
As explained at the beginning of the specification, the pressure plate C20 is
engaged to the lower end of the casing C23, and as the entire pressure of the
machine is thrown on this plate, it is preferably stiffened by ribs C21, (Figs. 50
and 51). The pressure plate is provided with suitable tapered orifices C22 to
permit the vent pins to pass through. C 18, (Figs. 49 and 50) is a plate for
carrying the vent pins C 19. The plate proper is engaged to and supported by
a frame C 18. In the plate proper is a series of grooves or channels C 189 and
in these grooves or channels is placed the pin clamping mechanism. This
mechanism is shown in detail in Figure 52. The plate is provided with a series
of orifices C 191 to receive the pins C19, and a tapered strip or segment C 182
is held to the plate and its height adjusted by a screw C 18 engaged in the plate
and provided with a clamping nut C 18. Springs C 186 are located under the
segments C 182 and surround the screws CIS. Their purpose is to raise the
segments C 18 against the clamping nuts C 185. Between the segments C 183
and the orifices C 19¹ are clamping strips or segments C 183, each segment grooved
at the point opposite the orifice. Obviously, a depression of the segment C 18³,
will force the segment C 183 against the pins and clamp them. The vent pins C 19
are tapered or sharpened on their lower ends and the body of each pin is pre-
ferably roughened or milled as shown in Figure 53 to permit it to be tightly
clamped in place. As will be later described this vent pin plate or board C 18
has a vertical motion to force the vent pins into and withdraw them from the
mold. In order to permit this plate C 18 to move upward past the sand chute C42,
I cut the plate C 18 and accompanying parts away to form an opening or recess C 44
(Fig. 49). Of course in the drag machine, this recess is not necessary as the
sand chute is in the center of the machine as hereinafter described. Supported
by a bracket extending from the cylinder D1, (Fig. 3) is a cylinder C 16 having
a fluid inlet pipe C 161 (Fig. 2) and controlled by a valve C17. Pivoted in the
casing G is a shaft G 25 (Fig. 1) having an operating handle G 26. On the
shaft G 25 is an arm shown by dotted line G 27 (Fig. 2). Pivoted to this arm
is a rod G 28 extending down to and pivoted to the valve arm C 17. By tilting
the lever G 26, the valve C17 is opened or closed as the case may be. C 15, is
the piston rod extending from the piston in the cylinder C 16, and is pivoted
to a link C14 and the latter is pivoted to an arm C13 on the shaft C1, (Figs. 2
and 3). This shaft is also shown in Fig. 20. Located on this shaft is a gear C3
(Figs. 19 and 20). Supported by the ribs C25 of the casing C 23 is a frame C9
and this frame supports one end of each of the shafts C2, C210. The other end
of each shaft is supported by boxes C9 and C81 bearing on the ribs C25. On
one end of the shaft C 210 is a crank C51 having teeth C5 as shown in Figure 19
and on the other end of the shaft C210, is a crank C71. Pivoted to the crank C51
is a rod C 10 and pivoted to the crank C71 is a rod C10¹. On one end of the
shaft C2 is a crank C5 having a gear face C52 and pivoted to this crank is a
rod C10. On the other end of the shaft C2 is a crank C7 and pivoted thereto

page_text: '
7. T
is a rod C 10¹. The four rods C10 C10¹, have their respective lower ends pivoted
to the ears C 187 on the frame C 18' (Fig. 50). On this frame are guide posts C 188
which travel in the guides C37 on the casing C 23 (Fig. 10). The gear C3;
(Fig. 19) is toothed on opposite sides of its periphery to mesh with the teeth C5*
on the crank C 51 and also to mesh with the intermediate pinion C6, mounted
in bearings on the frame C9. The latter pinion meshes with the teeth C52
on the crank C5. It will thus be seen that a revolution of the shaft C1 through
the medium of the piston rod C15 revolves the shafts C2 and C210 and thus
raises or lowers the vent pin plate or board C18 as the case may be. Located
on the shaft G 25 on the outside face of the 'inner wall of the casing G is an
arm G30 and pivoted thereto is a depending. rod G31 (Fig 1) having a pro-
jection G 32 at its lower end. On the side of the casing D8, is an arm G 36
(Fig. 1). This arm is shown in detail in Figure 136. It is hinged as at G 37
so that it can swing horizontally and a spring G 38 tends to keep it normally in
one position. It is provided with a projection G33 and an end G39. G40
(Fig. 135) is a plate engaged to the outer face of the inner wall of the casing G
by slots in one member and bolts passing through the same to make it adjustable
vertically. On the plate is a track G 41. Pivoted to the plate is what I will
term a switch G 42 having a spring on its pivot to keep the free end of the
switch normally against the track. The arrangement of the parts is such that
the spring G 38 tends to keep the end G39 normally against the track G 41.
As the casing D'8 carrying the arm G36 ascends the end G39 will fide up
on the face of the switch G 42. This brings the projection G33 in the path of
the projection G 32 on the rod G 31, and moves the latter upward. When the
projection G 32 has been raised the desired height, the end G 39' rides off the
face of the switch G 42 and is thrown over against the track G41" by the
spring G 38. This carries the projection G 33 away from the projection G'32
and the arm G 36 can move up as far as desired. When the casing D8, drops
down the spring G 38 will keep the end G39 against the track G41 until the
switch point has been passed and on the upward movement the same operation
takes place. The upward movement of the projection G 32 tilts the arm G30
and revolves the shaft G 25. This opens the valve C17 and admits the fluid
to the cylinder C 16 to raise the piston rod C 15 and the latter through the shaft C1
forces the vent pin board down and forces the vent pins which have been pré-
viously set to the required height into the sand, their ends terminating closely
adjacent to but not quite reaching the point reached by the pattern when it
has finally formed the mold. I prefer to allow about a 32nd of an inch more
or less between the end of each vent pin and the adjacent face of the pattern
when the pattern has reached its 'maximum height.
MECHANISM FOR FILLING THE SAND RESERVOIRS..
'As before explained, the revolution of the shafts C20 and C2 drops the vent
pin board. On this shaft C2, (Fig. 20) is a gear A 26 which meshes with a
gear A 26 on the counter shaft A 25 carried, in the boxing A 25 the, latter sup-
ported from the ribs C25. On the shaft A 25 is a bevelled gear A 241, which
meshes with the bevelled gear A 24 on the shaft A 23, (Figs. 19, 20, 21 and 37).
Keyed to the shaft A 23 (Fig. 37) is what I will term a double segment A 21,
This double segment gear is shown in detail in Figures. 46. and.47. and is pro-
vided with two part segments A 50-A51, out of alignment with each other
shown in Figure 46. Pivoted on the segment A 50 is a catch A 21¹ one end. A.213
of said catch projecting out and being in line with the teeth of the segment A 50
while the other end A 21 of the catch bears against a shoulder on the hub of
the segment. A spring A 212 keeps the end A 21 normally against. this shoulder
but allows the end A 213 to tilt out of alignment with the teeth. A 50.against the
spring pressure. The shaft A 23 extends through the frame A 29 (Fig. 37)
depending from the casing A 9 and the upper end is journaled in the flange. of
the casing A9 the lower end being journaled in the boxing A 251, (Fig. 21).

page_text: .
A. 19 is another shaft the lower end journaled in the frame A 29 (Figs. 37 and 38).
The upper end of this shaft is journaled in the frame A 27 extending from the
casing A 31-A 32. Keyed to the lower end of the shaft A 19, is a segment A 20,
adapted to mesh with the segment A 51 in the gear A. 21. Surrounding the
shaft A 19, above the segment A 20 is a sleeve A 182 provided with a segment A 18*,
the latter having a projection A 183. The end of the segment has one or two
of its teeth cut away as at A. 185 and the tooth A 186 on the end is projected
slightly beyond the plane of the other teeth as shown clearly in Figure 45 for
a purpose which I will later explain. Engaged to the sleeve A 182 is a bevelled
gear A 18¹. On the face of the gear A 16, is a bevelled segment A 17 which
meshes with the bevelled gear A 18¹, so that a revolution of the sleeve A 182 will
revolve the gear A 16 and as previously described, the movement of the gear A 16
opens or closes the doors A 10 as the case may be. Engaged to the shaft A 19
by a feathered engagement is a bevelled gear A 18. The engagement is feathered
to permit the gear A 18 to move vertically on the shaft when the casing A 31-
A 32, is adjusted and yet insure a revolution of the pinion A 18 with the shaft.
Surrounding the trunnion A 38 of the doors A 34 is a bevelled segment A 14¹
held on to the trunnion by the collar A 144. This bevelled segment carries the
catch A 148 which engages in the notch A 143 on the inner periphery of the gear A 14
as previously explained. Engaged to the shaft A 19 is another bevelled gear A 19!,
similar to the gear A 18¹, and engaged also by a feathered engagement for the
same reason. This meshes with the bevelled segment. A 12 on the face of the
segment A 12. The latter is keyed to the trunnion of the. middle door and the
side doors are operated through the segment A 13 on the trunnions of the side
doors, the operation in this respect being substantially the same as the other
two sets of doors. Now as will be seen, the revolution of the shaft C2 for moving
the vent pin board also revolves the shaft A 23 and the latter revolves the
segment A 21. In order that the operation of the sand doors may be clearly
understood, I have provided a series of diagramatic views shown in Figures 129
to 134 inclusive, illustrating the various positions of the segments during the
various operations of opening and closing the doors and I wish to call attention
at this point to the fact that where one segment as for instance A 20,. is directly
beneath the other segment as for instance A 18 I have thrown them slightly out
of alignment when viewed in plan, so that they may both be seen. Referring
now to Figure 129, the various segments are in the position which they would
occupy with all the sand doors closed. Through the operation of opening the
lower sand doors as previously described the bevelled gear A 17 (Fig. 37) revolves
and this revolves the bevelled gear A 18 on the sleeve A182 and the seg-
ment A 18 is thereby thrown to the position shown in Figure 130, the other
segment of course remaining unmoved. The relative position between- the
segments A 18 and A 50 is such that the teeth A 18 will not engage with 'A 50
when but one of the segments. is moving as for instance in the movement just
described. At the tail end of the movement of the segment A 18, the cut away
portion. A 185 comes opposite the end of the segment A 50 with the tooth A 186
resting against the tooth A. 53. The shaft A23 is now revolved carrying with it
the segments A 50-A 51. The initial movement of the segment A 50 bearing
against the tooth A 186, starts the segment A 18 and this causes the teeth A 50
to engage with the teeth on the segment A 18 and revolve the segment A 18'
to the position shown in Figure 131. This of course revolves the lower sand
doors and closes them. Now a continued revolution of the shaft A' 23 brings
the tooth A213 on the catch A 211 against the projection A 18 on the seg-
ment A 18, and kicks the latter out of the way so that its teeth will not engage
with. A 50 on the return- movement. The initial quarter turn of the shaft A 23
just described has meantime brought the segment A 51 around to the point where
its teeth will engage with the segment A-20 as shown in Figure 131 The con-
tinued movement of the shaft A 23 or the second quarter turn thereof, revolves
the segment A 20 to the position shown in Fig: 132. This revolves the shaft A 19.
.

page_text: At this point, I will digress to call attention to the fact that as previously
explained when the middle doors A 34 were opened, the catch A 142 which was
on the beveldd segment A 14' was disengaged from the notch A 143 in the
gear A 14, thus allowing the gear A 14 when the doors open to revolve around
to the position shown in Fig. 40. Now as the second quarter turn of the
shaft A 23 as illustrated in Figure 132 gives the shaft A 19 the quarter turn just
described and this brings the catch A 142 around to the notch A 143 and permits
it to engage in said notch. This same quarter turn of the shaft A 19 just described
acts through the gear A 19 meshing with the bevelled gear A 12 on the gear A 12
to open the upper sand doors A 35. It will thus be seen that by the half turn
of the shaft A 23 (and in this is its maximum movement), we have closed the lower
sand doors, permitted the middle sand doors to remain open (but engaged them
so that the return movement will close them) and opened the upper sand doors.
This of course will allow the sand in the hopper above the upper sand door to
drop down and fill both reservoirs. Now on the reverse movement of the
shaft A23 (and the mechanism for accomplishing this will be later described)
segment A 51 which has of course remained in mesh with the segment A 20, will
throw the segment A 20 to the position shown in Figure 133 thus of course giving
the shaft A 19 a quarter turn and operating through the catch A 142 engaging
in the notch A 143 to close the middle sand doors and of course closing the upper
sand doors, the movement being simply in reversal of that in opening them.
This same quarter turn of the shaft A 23 in the reverse movement has brought
the segment A 50 to the position shown in Figure 133 but the segment A 50
will not disturb the segment A 18 for the reason that the pivoted catch A 211
when the tooth A 213 strikes the projection A 18, tilts against the spring pres-
sure A 213 and permits. the segment A 50 on the last quarter turn of the reverse
movement to slip past the segment A 184 without engaging it. This brings us
to the position shown in Figure 134 which is the initial position with all the
doors closed and corresponds with Figure 129.
It will now be seen that the operation of forming the mold and including the
insertion of the vent pins is completed and we are ready to withdraw the various
parts from the sand or mold.
MECHANISM FOR WITHDRAWING THE VENT PINS, SPRUES AND PLUNGER.
Before describing the withdrawal of the parts however, I wish to call attention
to the fact that when the piston head D4 reaches it maximum height, it forces
the inner false flask C29 up until the catch E 29 (Fig. 89) can engage the flask
and the latter is held there when the plunger descends ready for the next opera-
tion. At the same time the outer false flask C28 has also been forced up and
is engaged by the catches E 12 (Fig. 89) so that when the piston descends, it is
held up ready for another operation.
The operator to withdraw the vent pins grasps the lever G 26 and moves it
say to the right as shown in Figure 2, and this through the arm G 27 and rod G 28
moves the valve C 17 in the cylinder C16 and this allows the fluid beneath the
piston head to escape and admits pressure above the piston head and forces the
latter down thus carrying the rod C 15 down and revolving the shaft C1 in the
direction onposite to that in which it was revolved to force the vent pins down.
This reverse revolution of course carries the vent pins up out of the sand.
Referring now to Figure 20, it will be observed that the gear C3 has fixed to it
a bevelled gear C4 which meshes with a beveled gear B31 on the lower end of
the shaft B 30, (Figs. 19 and 21). This shaft B 30 is also shown in Figures 1,
2 and 3 and is provided on its upper end with a bevelled gear E 29 having a
feathered engagement with the shaft B 30, so that the gear can be adjusted
vertically on the shaft and yet revolve therewith. This adjustment is to corre-
spond with the adjustment of the ring B10 which carries the sprue lifting
mechanism. On the shaft B 10 previously described and outside of the
casing B2, is a bevelled gear B 28 which meshes with the bevelled gear 13 29

page_text: (Figs. 25 and 27). Thus a revolution of the shaft B 30 acts to revolve the
shaft B 10%. Of course when the shaft C1 (Fig. 20) is revolved to force the
vent pins into the sand, the shaft B 30 will be revolved and the crank arm B 10¹
would be thrown to its lower position, that is, to the position shown in Figure 25.
This same movement of the crank arm acts through the arm B36 coming in
contact with the shoulder B 92 on the dise B9 to revolve said disc and thus
through the pitman B 12 acts to lower the plate B 13 where it engages the upper
end of the plunger and acts to stop the latter in its upward movement, thus
causing the plunger to act as a part of the pressure mechanism. When the
patterns have reached their maximum height the plate B 13 is ready for the
catch B 13 to engage the plunger. Now when the shaft B 30 is revolved in the
opposite direction (that is when the vent pins are being lifted) the rod B 14 and
consequently the fitting B 16¹ are lifted. It will be remembered in the descrip-
tion of the mechanism for dropping the sprues, I described how the foot B 16*
was disengaged from the notched B 182 of the sprue fitting thus allowing the
latter to drop. The fitting B 16' and the rod B 162 have now been moved to their
lower position as just described and as the pattern ascends and carries the sprues
upward when the pattern has reached its maximum height, it has brought the
sprue fitting B 18 to the point where the foot B 16+ can engage in the teeth B 182,
the foot being held there, by the spring pressure B 163. Now as just explained,
a revolution of the shaft B 102 acts through the rod B 14 to lift the fitting B 18
and consequently the sprues 1320. On the disc B 9 of the sleeve B9, is another
projection or shoulder B9' and on the crank arm B 10 another arm B 35, the
latter adapted to contact with the shoulder B91. The first quarter turn of the
shaft B 10 as just described, brings the arm B 35 around to the shoulder B91.
This revolution of the shaft B102 through the rod B14 draws up
or
strips the sprues through the plunger and through the plate
or fitting B 6. At the end of this quarter turn, the arm B 35 coming in contact
with the shoulder B91 starts the revolution of the disc B9 and for the other
quarter turn the plunger and sprues are moved together to their maximum
height thus stripping them through the ring B6.
THE PATTERN STRIPPING MECHANISM.
In the operations just described, it will be remembered that the piston rod C 15
descends in the operation of lifting the vent pin, sprues and plunger. It will
also be remembered that I have described the piston D4 as having reached its
maximum height. This would of course bring all of the parts supported by the
piston head to their maximum height. Extending from the side of the casing 18,
are two arms D 10, (Fig. 12) and journaled in these arms is a shaft D 29. On the
other end of the shaft D 29, is a pinion D 31 and meshing therewith is a rack
bar 1 32. Keyed to the shaft D 33 one end of the latter being journaled in the
arm D 10 while the other end is journaled in the box D9₁ on the arm 19,
(Fig. 12), is what I will term a compound arm D 34, shown in detail in Figures 21*
and 21 and shown also in Figure 2. This arm D34 has two arms D34¹ and
D342 and the ends of the arms when in position are out of vertical alignment-
with each other. Obviously when the piston head D4 is raised, the arm D 34',
Now as
will travel up to a point below the arm C 151 on the piston rod C 15.
the piston head descends in the operation of raising the vent pins, etc., arm C 15¹
strikes the arm D 341 revolves the shafts D 33 and D 29 and throws the eccentric
shaft D 22 off its center when the weight of the frame 1 12 and the parts which
it carries will carry it down the maximum distance permitted by the eccentrics.
G 34, (Fig. 2) is a guide carried by the casing G and on the interior of the same,
the casing being provided with a slot opposite in which the arm 1 342 travels,
the end of the arm D 342 bearing on said guide. When the arm D 342 reaches
the top of the guide it rides off and permits the arm D 34' to be tilted by the
5 arm C 15. Later when the piston head is dropped this arm D 342 rides on to
the face of the guide G 34 and through the mechanism above described again

page_text: $
throws the eccentric shaft to its upper position. Engaged adjustably to the
piston rod C15 is another arm C.15 This-arm is shown in detail-in Figure 137
it is substantially a duplicate of the arm G36 previously described, is hinged
as at C 153, is provided with a spring C-154-has an end C 155 and a projection C 15º.
Supported adjustably from a lug or arm
rm extending from the cylinder D1 is a
plate C 157 carrying a track 158 and spring impelled switch C 15%. As the
rod C15 moves down the end C155 of the arm C 152 rides along the face of-the
switch C15 and the projection C-15 is thereby held out into the path of the
projection or shoulder G35 on the rod G 6, thus moving the latter down and
opening the valve G8-of-the. cylinder D1. As soon as the requisite depression
of the rod G6 is obtained the end C-15 rides off the pivoted ends of the switch
and the spring C 15 carries it over to the track C15 and-out of the path of
the shoulder G35. When the rod C15 again ascends the end C 155. rides
up the
track C15s past the switch and projection G 35 until it passes the switch point
when on its downward movement, the switch picks it up and the operation is
repeated. The movement of the shoulder G 35 as just described; by the arm C 15
is just after the dropping of the frame D 12 and thus the valve GS is opened
just after the frame 112 is dropped. This allows the pressure fluid to escape
thus letting the piston head and all the parts thereon, drop away. It will be
remembered that in the description of the mechanism for forcing the patterns
and flask up, the crank shaft D21 was thrown off its center by the segment G-14
while the auxiliary crank shafts D46 were thrown off their centers by the
segments..G 10. Both these cranks in reaching their lower limit would give the
segments G 10-G 14, a half revolution so that when the piston head is at its
maximum height, the arm G 12. of each segment G 10-G14 would be above
the upper.end of its respective piece G 16-G-21... Now as the piston head starts
down the arm G.12 will bear on the guides G 16-G 21, and will be tilted until
the teeth in the segments G11 will engage with the respective rack bars
G17 G.22 and the latter will continue the revolution of the segments G.10G 14,
until the guides G 15,"G20 are reached when the end of each segment G 11 will
ride on these guides and complete the return of each segment G 10-G 14. The
revolution of these segments will of course through the mechanism previously
described, throw the crank shafts up with respect to the piston head, or in other
words, will increase the distance between the párts carried by the crankshafts
and piston head. It will be remembered that the sectional ring F1, which is
carried directly by the casing. DS, bore against the chill support F2 with. the
ring D 178 below the level of the sectional ring F1, when the parts reach their
maximum height. Now as the piston head descends, it carries with it, the
sectional ring F1. As soon as the crank shafts are brought into operation, the
ring D 178, (which is supported from the frame D 17 and later supported from
the shaft D21) slows its speed very materially remaining almost stationary with
respect to the mold and pressure plate while the sectional ring F1, descends with
the speed of the piston head, the result being, that the ring 178 soon picks
up the chill support and carries it on down. It will be remembered that the
frame D 15 when the parts were at their maximum height, rested on and was
supported by the plate D 14 on the frame D 12. Even when the frame D 12
was dropped through the revolution of the shaft D 22 as previously explained,
the frame D 15 would not reach its supporting ring D 43 on the frame D 17 but
as the frame D 17 is moved by the crank shaft D21 and its downward speed
materially retarded thereby, the downward movement of the piston head and the
frame D 12, causes the frame D 15 to overtake the frame D 17 and the frame D 15
is thereupon picked up by the ring D 42 resting on the lower ends of the
guides D 151. About this time, the crank shafts D 46 are brought into play as
above described and they cause the ring D 41 to rise with respect to the ring D43
and pick up the frame 115 and the parts will continue to descend with the piston
head to the position from when whence they started.

page_text: MECHANISM FOR TRANSFERRING THE FLASK CONTAINING THE SAND. MOLD. FROM ..
THE MACHINE..
At the beginning of the specification, I described a crane arm for picking up
the flask and carrying it into the machine. On the opposite side of the machine
(Fig. 107) is a similar crane arm for picking up the flask as the piston head
descends and carrying it out of the machine. I do not consider it necessary to
specifically describe this crane arm for the purpose of distinguishing it from the
crane arm H 10, 1 will letter it H 52 (Figs. 106, 107). On the inner face of this
arm, is a spring catch H 53 corresponding substantially with the spring catch H21.
This catch when the arm II 52 is thrown in, engages a vertically movable
shoulder H 54 on the standard H 50. (Fig. 106*). A spring H 60 tends to keep
the shoulder normally in its lower position. Pivoted in a lug H 61, extending
from the standard H 50 is a lever H 62. Extending up from the portion H 64
of said lever is a vertically movable rod H 65, the upper end bearing on but
not engaged to the shoulder H 54. On the arm D9 (Fig. 12) is a projection H 66.
As the casing D8 descends the projection H 66 strikes the arm or portion™ H 63
of the lever and thus tilts the portion H 64 forces up the rod H 65 and forces
up the shoulder H 54 until the latter clears the catch H 53 and allows' the
spring H20 to throw the arm out. When the casing D8 again moves up, the
lever H 62 tilts on its pivot and allows the projection H-66 to ride past without
affecting the shoulder H 54, the latter having been returned to its lower position
by the spring H 60 and its descent limited by the stop H 67. When the crane
arm H52 carrying the. flask has been thrown out as just described, the operator
then opens a suitable valve controling the cylinder which supports the arm H 52
and allows the arm to deposit the flask at the desired point outside t the machine.
THE CHAPLETS.
Referring now to Figures 34, 35 and 36, I will describe the chaplets and the
shield for protecting the same from sand. In the lower edge of the runner box
as shown in Figs. 93 and 94 are the chaplets S. Three of them are shown in
this case but their number might of course be varied. Each chaplet is provided
with a stein S1 (Fig. 34) which enters a corresponding orifice in the runner
box F 52, a proper frictional engagement being provided by wrapping a piece of
paper or other combustible substance around the stem S1 before the insertion
of the stem in the orifice, the idea being to cause enough friction to hold the
stem in the orifice but not enough to prevent the chaplet to be adjusted therein
as hereinafter described. Extending up from the pattern which in the present
instance is section R2 thereof, (although it might extend from any other part
of the pattern mechanism) is a flange S2 forming a socket in which the casing S3
of the chaplet is engaged, preferably by screw threads as shown. A flange S4
acts as a stop and also as a bearing Hange to form a perfectly solid engagement.
S5, is a tube having a bearing $6 on its end and sliding in the casing S3. S7 is
a spring one end bearing on the tube $5 while the other and bears on the
flange of the casing S3, the spring tending to keep the tube normally in the
upper or outer position. $8, is a bearing ring screwed into the interior of the
casing S3 and forming a bearing for the tube S5 as it emerges from the casing S 3.
S9 is a plug fitting extending up into the casing S3 and into the tube S5. It
is provided on its end with a cap $10 interiorally threaded to fit exterior
threads on the end of the casing $3 so that by a revolution of the stem or plug
or fitting S9, the end will be adjusted in or out with respect to the outer end S 11.
of the tube S5. The stem S9 may if desired be provided with orifices S 12
whereby it may be revolved from the upper side of the pattern to properly adjust
it. $ 13.is a ring engaged into the interior threads of the casing S3 and adjust-
able by means of said threads. It forms a stop for the upper or outer movement
of the tube $5. The operation is obvious. The chaplets S are inserted in the
lower edge of the runner box with an engagement sufficiently. loose to permit

page_text: them to move up when pressure is brought against them. The tube S5 is of
suiticient length so that before the patterns are moved up, it will reach and
engage over the chaplet as shown in Figure 34 and have a firm bearing against
the bottom of the runner box F52. Thus when the sand is introduced into the
Hask, the tube $5 prevents it from reaching the chaplet and as the pattern
ascends, the tube will be forced down into the casing $3. Finally the chaplet
will bear against the end S 12 of the plug S9, and the latter will force the chaplet
into the runner box and adjust it so that it projects from the cope, the requisite
distance. Thus as the pattern recedes, the chaplets project through the mold
in the usual manner but they have all the time been protected from the sand by
the tube $5.
In Figures 139 to 142 I have shown a slight variation in the construction of
the chaplet although in its main features it is the same as that just described.
It will be observed that the stem or plug S9 is made hollow so that any sand
which should get into the tube $5 could drop down through to the cap S 15 and
by removing the latter the sand could be removed.
Again there is a ring S16 which forms a stop for the upward movement of
the tube $5 and may be adjusted to any height desired. Again there is a
sprig catch $ 17 which engages the lower end of the tube S5 and will hold the
tube S5 in its lower or retracted position until intentionally disengaged.
The use of this spring might be desirable when the patterns were not in the
machine.
OPERATION OF FORMING THE SAND MOLD.
I have previously described the mechanism for manipulating the patterns
and flasks and I will now describe the effect of the operation of those mechanisms
in forming the mold, and in doing so, a reference to Figures 108 to 117 will aid
in explaining the operation. It will be remembered that under the heading
"The Pattern and Mechanism for Moving the Same," I described the frame D 15
as provided on its upper end with three concentric rings M1, M2 and M 3 and
the frame D 12 provided with two concentric rings P1 and P2. These rings
together with the inwardly projecting ring flange 01 on the casing DS, (Fig. 4)
and the ring Q2 supported directly by the posts or supports D25 (Fig. 4) con-
stitute the pattern supporting rings. It should also be borne in mind that
the rings Q1 and Q2 are immovable with respect to the piston head and only
move with the latter; that the rings P1 and P2 are through the frame D 12
supported and operated with respect to the piston head by the eccentric shaft D 22;
and that the rings M1, M2 and M 3 (which are on the frame 1 15) may be moved
either by the eccentric shaft D22 when they are supported from the frame D 12
or by the crank shaft D21 when they are supported from the ring D 43 on the
frame D 17 or by the crank shafts D46 when they are supported from the ring
141 (which is carried and moved by the crank shafts D 46) the latter of course
being carried by the frame D 17. In this instance, the pattern is made up of
three pieces R1, R2 and R3, the portion R 1 at the beginning of the operation
resting on the ring M1; the portion R 2 resting on the ring Q2 and the por-
tion R3 resting on the ring M3 through the medium of the lugs R4 on the
portion R 3 of the pattern. I wish also at this point to explain the term "pressure
mechanism" as employed in my specification and claims.. The pressure plate C 20
ring B6 and plunger B 17 (when the latter has been arrested in its upward move-
ment) as before explained) constitutes a stationary machanism against which
the sand is forced by the upward movement of the pattern and flask supporting
mechanism. My term "pressure mechanism" does not therefore necessarily mean
movable mechanism. In my claims however, I have referred to "vertically
movable" pressure mechanism. When this term is employed it relates of course
not to stationary pressure mechanism, but to the mechanism which moves the
pattern parts or flask or both upward to obtain the desired compression, said
movable pressure mechanism operating against the pressure mechanism above.

page_text: In
The relative position of the pattern parts at the beginning of the operation is
shown in Figure 128 and is also shown in diagramatic Figure 108. The flask
is then placed in the machine and the sprues and outer false flask dropped as
shown in Figure 109 and at this point, the first lot of sand is dropped.
Figure 110 the inner false flask has been dropped together with the plunger and
the second lot of sand. The piston head is now advancing or rising and all the
parts move with it without a change in their relative position until the outer
false flask has moved up to bring the pressure plate about half way down the
outer false flask. The operation up to this point is illustrated in Figure 111.
When the parts reach the position as shown in Fig. 111, just described, the sand
has received its preliminary pressure, the compression so long as the flask is
moving upward taking place on the top of the sand. Of course above the high
parts of the pattern, that is, where the sand is thinnest, it is compressed to a greater
degree than that above the lower parts of the pattern. It therefore becomes
desirable to allow the higher parts of the pattern to remain stationary with
respect to the pressure plate while the lower parts are still advancing. This is
accomplished through the crank shafts D 46. When they are revolved, they
permit the rings M1, M2, M3, to remain stationary with respect to the pressure
plate while the piston head and the balance of the parts are advancing. This
causes the parts R 1, R 3, of the pattern to cease their upward movement and
the part R2 of the pattern together with the flask to move up to the position
shown in Figure 112, with the flask bearing against the pressure plate. Mean-
time, the vent pins have been dropped. This last movement of the flask and
portion R 2 of the pattern has caused the sand above the portion R 2 and along
the flask to be compressed still further and has given us all the pressure desired
along the flask. Thereupon the shaft D21 is thrown thus permitting the flask
to remain stationary with respect to the pressure plate while the piston head
still advances carrying the portion R2 of the pattern. This brings us to the
position shown in Figure 113. At this point, the pattern R3, is picked up
by the ring P2 which it will be remembered is on the frame D 12 which is
advancing with the piston head. Thereupon the portions R2, R3 of the pattern
are advancing with the piston head, the portion R1 and the flask remaining
stationary with respect to the pressure plate thereby compressing the sand still
more above the portions R2, R3, of the pattern. This brings us to the position
shown in Fig. 114. When this point is reached, the sand is compressed sub-
stantially the same throughout the mold. At this point, the frame D 12 and
consequently the rings M1, M2, M3, P1 and P2 and Q2 (all being in horizontal
alignment) are advanced together the flask meanwhile remaining stationary with
respect to the pressure plate. Now as just mentioned, the sand being compressed
to substantially the same extent throughout the flask and the patterns all being
in proper alignment to form the mold. it is desirable to give an additional pres-
sure to the entire mold on the face of the pattern. The advance of the entire
pattern which now takes place accomplishes this, the final resting point being
shown in Figure 115. This completed motion of the pattern has brought the
complete pattern up to its desired point with relation to the vent pins, the latter
standing a very slight distance above the pattern and the sectional ring F1
on the casing DS resting against the chill support as previously described.
will be remembered that near the beginning of the operation, the plunger was
dropped down on to the sand within the runner box. As the flask and runner
box advance upward, they carry the plunger up within the casing B2 (which
is stationary) until the plunger strikes the ring B 13 which as previously
explained has dropped down to its lower position. This plate B 13 here acts as
a stop for the plunger thus causing the lower end of the plunger together with
the ring B 16 on the casing B2 to act as a pressure plate for the sand within
the runner box. the parts remaining in this position until the final position
shown in Fig. 115 is reached. From the above it will be seen that the first
movement of the piston compresses the sand in the top of the flasks this continues
It

page_text: as long as the flasks move upward; that the most compression in this first move-
ment is over the highest parts of the pattern; that these parts ceasing their move-
ment. the compression above them ceases; that as soon as the flasks cease their
upward movement the compression on the top ceases and that the upward-move-
ment of the pattern parts when the flasks are stationary compresses the sandi'on
the lower side, that is, the sand on the face of the moving pattern parts.
-
We are now ready for the stripping. First, the vent, pins are withdrawn,
stripping through the pressure plate. Substantially, at the same time, the' sprues
are withdrawn stripping through. the ring B6 and the plunger. The plunger.is
then withdrawn. stripping through the ring B.6. The parts above the moldare
now all stripped...Just after the vent pins, sprues and plunger have started-thre
arm C15 strikes the arm D 34' and moves the eccentric shaft.) 22. This causes
the frame D 12 (carrying also D.15) and.consequently the rings P1, P2, M1, M2
and M3 to move down before the piston head starts down and consequently while
the casing 18 and flask. which is resting thereon and also the rings Q2 carrying
the portion R2 of. the. pattern, remain stationary, the, other parts drop,away.thus
stripping. the portion. R 1 and R 3 of the pattern through the portion R2 of the
pattern and the chill support. The result of this movement-is, illustrated in
Fig. 116. When this movement is completed, the armr C152 has reached in-its
downward movement, the dug. G 35, and. the latter opens the valve of the cylin-
der DS and allows the pressure to escape..therefrom thus permitting all the, parts
to drop away from the pressure plate. At this point, however, the segment G. 14,
commences to revolve the shaft D21 so that while, the piston is descending-the
frame D 17 is descending at a slower speed and.as.soon as the flask which-up.to
this time has been supported by ther sectional rings.El on the casing DS over-
takes the ring D 178 on the frame:D,17,the said ring. D 178 assumes the support
of the flask and the piston thereupon carries the portion R 2 away from the mold,
this portion being the last to leave the mold: As soon as the runner box,has cleared
the pressure plate, the trunnions of the flask strike the crane arm and as soon as..all
of the parts below the mold have cleared the flask the latter is swung out....
1,-
THE DRAG MACHINE.
I. 744
г
It will be remembered that in the opening of my specification, I called attention
to the fact that the.drawings showed both a cope andra. drag-machine; that the
drag machine was substantially the same as the cope-machine except that certain
mechanisms of the cope machine were dispensed with.in the drag machine; that I
would therefor first describe the cope machine and then describe the drag-machine.
Comparing now, Figs. 3 and 4 and 7 and 8, it will be seen that, the machines are
identical up. to and including the mechanism on which the pattern-and-flask
directly rest. In other words, in the, drag machine with one or two, minor varia-
tions which I will later describe; the structure is the same, as the.cope.machine up
to and including the rings M1, M2, M3, P1, P2, Q1. and: Q2. The cope
machine, of course forms one half of or what is technically termed the cope" of
the. mold, consequently when the, drag is formed, there is no necessity of any
sprues nor of any pressure plate for the runner. box which as. above explained is
the plunger and ring B6, nor is there any inner false flask. . So. also there is
necessity for only one lot of sand. In the drag machine therefor, I have dispensed
with all the mechanism relating to the sprues, plunger, inner false flask and the
dumping of the second lot of sand. The removal of the plunger, and sprue
mechanism enables me to locate the sand reservoir and chute directly above the
central opening of the pressure plate and allows me to feed the sand directly down
therethrough. In the drag-machine, as soon as the sand has been dropped; the
bottom. board is swung into place and as the pattern, mechanism advances upward,
the bottom board comes to a bearing against the pressure plate and in-turn becomes
the pressure plate. The dumping,.of the first lot of sand is accomplished in
exactly the same way as in the cope machine, the dropping- of the outer..false
flask is accomplished in the same way and the movement, upward, of the pattern

page_text: The
and flask supporting mechanism is of course the same. I will now describe in
detail the mechanism peculiar to the drag machine. In the first place, there is
no chill accompanying the flask and the part that corresponds with the chill sup-
port in the cope machine; I will term the flask support in the drag machine.
This is shown at F 3 (Fig. 7). Instead of having an outwardly extending rim or
flange F 19, as shown in the cope machine (Fig. 97), it has an inwardly extending
flange F31 (Fig. 99), the purposes being to carry the flange inside the machine as
long as it is not needed to support the chill. The upwardly projecting flange F 17
is slightly longer than in the cope machine and is not of course provided with
the recess F 18. Extending up from two of the arms D9 (Fig. 7), and on opposite
sides of the machine are rods F 22 shown also in diagramatic Figures 118-126
inclusive. The purpose of these rods is to lift the false flask off the flask proper
when the sand gets the final pressure through the final upward movement of the
patterns while the flask remains stationary as hereinafter explained. The neces-
sity of moving this false flask off the flask proper is to enable the clamps whereby
the bottom board is clamped to the flask to be placed in position. The general
operation of the drag machine is briefly as follows:-The flask is swung on by
the crane arm and lowered to its position in the machine, the trunnion of the
flask striking the projection E3 on the rod E2 as in the cope machine thus
dropping the outer false flask and the sand. As soon as this is accomplished
the operator if necessary evens up the sand in the flask and then swings in an
additional crane arm H 55 shown by dotted lines Figure. 105 and also by dotted
lines Fig. 107. This crane arm carries the bottom board F71 by means of a
handle or eye F 73 on the top of the bottom board. As soon as the bottom board
reaches its position over the false flask, the operator allows still more air to escape
from the cylinder which supports the crane arm and this permits the crane arm
to drop and lowers the bottom board on to the sand within the false flask.
bottom board is provided with recesses F 72 so that as the bottom board descends
in the false flask, it is properly registered and guided therein. In order to
facilitate the accurate centering of the bottom board with respect to the false
flask. I provide on the bottom of the bottom board (Fig. 103) a series of bevelled
projections F7 and these striking the top edge of the false flask will accurately
center the bottom board with respect thereto. As soon as the bottom board is
placed. the operator turns the valve to admit the fluid into the main cylinder D 1
as in the cope machine, and the pattern parts are lifted as in that machine. I
will later describe these pattern parts and their function in forming the drag sec-
tion of the mold, suffice at the present time to say, that when the piston head D 4
reaches its maximum height, the mold has been formed. The upward movement
of the pattern parts as in the cope machine has operated the vent pin mechanism
and forced the vent pins down into the mold, the vent pins passing through
suitable orifices in the bottom board which register with the orifices in the
pressure plate. These orifices are tapered as in the pressure plate to enable the
pins to readily enter them. When the mold has been formed, the operator opens
the valve to the cylinder controlling the vent pin operating mechanism and allows
said mechanism to withdraw the vent pins as in the cope machine and this action
trips the eccentric shaft D22 as in the cope machine and then opens
the valve controling the cylinder I) 1 and allows the parts to return to their normal
position. Previously and before the operator has opened the valve to withdraw
the vent pins, he clamps the bottom board to the flask by any suitable clamps,
the false flask having been lifted off as previously described to permit this. The
action of inserting the vent pins into the mold has closed the lower sand doors and
has opened the upper sand doors in the drag machine and the action of with-
drawing the vent pins closes the upper sand doors exactly as in the cope machine.
Thus we see, that in the drag machine there is substantially the same mechanism
as in the cope machine except that certain mechanisms are dispensed with and
the sand reservoir in the center of the machine.

page_text: THE PATTERNS AND THE OPERATION OF FORMING THE MOLD IN THE DRAG
MACHINE.
It will be remembered that in the cope machine, there were three sections R 1,
R2 and R3 of the pattern together with the chill support and the chill. In the
drag machine, there are five sections of the pattern T1, T2, T3, T4 and T5.
Now by reference to Figs. 7 and 8, and also diagramatic Figure 118, it will be
seen that the section TI of the pattern, rests at the beginning upon the ring M1
which is a part of the frame D 15 through the projection T7 on the pattern; that
the section T2 rests upon the ring. Q2 which is stationary with respect to the
piston head that is, it moves only therewith; that, the section T3 is provided
with a flange T6 which at the beginning of the operation rests upon the ring M 2
which is a part of the frame D 15; that the section T4, rests upon the ring M 3
which is a part of the frame D 15; that the section T 5 rests upon, the ring. Q2
which is stationary with respect to the piston head; that the flask support at the
beginning of the operation rests upon the ring, 178 which is supported from the
frame D 17. The arrangement of the parts as just described is also shown in
diagramatic Figures 118, 119, the former illustrating the parts before the flask
is inserted and before the false flask is dropped and before the bottom board is
inserted while Figure 119 shows the flask, false flask and bottom board in place.
The movement of the piston head and frames D17, D 15 and D) 12, are exactly
the same as in, the cope machine, the result being that at the first upward move-
ment of the piston head, all the parts move for a distance in the same relation
to each other as when they started, thus giving the preliminary pressure and
compressing' the sand at the top of the flask. This brings the bottom plate about
half way down the false, flask as shown in Figure 120. Thereupon the crank
shafts 146 are tripped thus allowing the frame D) 15 and consequently the
rings M1, M2 and 3 and the pattern parts carried thereby, to remain station-
ary with respect to the pressure plate above, while the flask and the other pattern
parts continue to advance towards the pressure plate. This allows the sections T 1,
T3, and T4 to remain stationary with respect to the pressure plate while T2
and T5 (the low part of the pattern together with the flask move up to the
position shown in Figure 121. This brings the flask against the bottom board.
Now a continued upward movement of the piston head trips the crank shaft D 21
and this permits the frame D 17 which carries the flask and the frame D) 15 which
has been picked up by the ring D43 to remain stationary with respect to. the
pressure plate. Thus the sections T1 T3 and T4 continue to remain stationary
with respect to the pressure plate with the flask also remaining stationary while
the sections T2, T5 continue to advance. This brings us to the position shown
in Figure 122. At this point, the frame D 15 is picked up by the plate 1 14 on
the frame D 12. This advance to the position shown in Figure 122, has brought
the ring P1 which is on the frame D 12 up so that it bears on the legs from the
sections T 1, T3. Now as the continued advance..of the piston head carried the
sections T1, T3, together with section T5 and T2 upward, the only parts
remaining stationary with respect to the pressure plate being section T4 and the
flask. This brings us to Fig. 123, where the supporting rings are all in align-
ment. This last movement to bring the parts in alignment has brought the
frame D 12 up so that the plate D 14 thereon, will pick up the frame D 15 and
now a continued advance carries upward, the frame D 12 carrying the rings P1,
P2, the frame D) 15 carrying the rings M1, M2, M3 and the stationary rings Q1,
Q2 while the flask still remains stationary. The last movement, namely to the
position shown in Figure 124 now takes place, being in other words, a final
movement of the pattern with the parts in their final position toward the pressure
plate with the flask remaining stationary so that a final compression along the
face of the pattern takes place. In stripping, the first movement as in the cope
machine is to trip the eccentric shaft. D22 thus allowing the frames D 12 and D 15
to drop away from the pressure plate, or in other words, lessen the distance

page_text: between them and the piston head. This drops the rings P1, P2, M2, M3 and
consequently would drop all the pattern parts except the portions T2, T5, which
are held up against the mold to support it, Figure 125. The flask is also
held stationary since it during the final motion upward of the pattern mechanism,
has been picked up by the section ring F1 on the casing DS. As soon as the
parts above enumerated have been stripped, the vent pin operating mechanism in
its continued movement operates on the valve of the cylinder D1 as in the cope
machine and exhausts the fluid in the cylinder and allows all of the parts to drop
away, the crane arm meanwhile having been swung in to pick up the flask with
its accompanying bottom board as shown in Fig. 126. When the flask has been
removed from the machine, its position is reversed or in other words, it is turned
upside down, the cope flask is then placed upon it and the mold is complete as
shown in Figure 127.
In Figure 143 I have illustrated the pattern parts as being provided with
adjustable bearing surfaces so that their heights can be regulated with respect to
the parts which support them. For instance the section R 1 is provided with two
horizontal bearing sections W, W1 located out of vertical and horizontal align-
ment with each other. The section R 2 is provided with an adjustable bearing
pin W2 or the pattern supporting part Q1 may be provided with an adjustable
screw W3 which would perform the same function, as though the adjustable
screw were placed upon the pattern part. Or if desired the pattern may be pro-
vided with an adjustable ring as for instance at W6 on the pattern R3. In
addition to the above the pattern supporting parts may be provided with
sockets W4 and the pattern parts provided with guide rods W5 so that the
pattern part, when it leaves one supporting part and is carried by another
supporting part, will be properly guided.
In Figures 144 and 145 I have illustrated a form of clamp which may be
employed to bind the two portions of the flask together. In these Figures V
represents the cope portion of the flask, V1 the drag portion and V2 the bottom
board.
a
In carrying out the invention V represents the cope portion of a sand mold
flask, V1 the drag portion and V2 the bottom board. Extending from the face
of the flask V1 are two lugs V 3 of hook shape. V 4 is a fitting having project-
ing lugs or trunnions V 5 adapted to fit into the recesses in the hooks V3 and
provided also with two cam shaped surfaces V 6. V7 is another fitting having a
projecting nose VS adapted to fit over the bottom board and a lug V 9. The
fittings V4 and V 7 are bored longitudinally and threaded and are connected by a
right and left hand screw V10 having a nut V 11 to adapt it to be easily turned.
V12 is another fitting having two depending hooks 13 which fit over and
engage the cam surfaces V 6 of the fitting V4. V 14 is another fitting having
nose V 15 to engage over the edge of the flask, the fittings V 12 and V 14 being
connected by a right and left hand screw V 16. Springs V 17, V 18 are pro-
vided which bear against the sides of the flask and serve to readily throw the
fittings and clamp out from the flask when they are loosened. The operation of
the clamp will be readily understood. The operator engages the lugs V5 in the
hooks throws the nose VS over the bottom board V2 and then by means of
the nut V1 draws the fittings V4 V7 together until they bind. He then
engages the hooks V 13 of the fitting V 12 over the cam surface V6 on the
fitting 4 and engages the nose 15 over the edge of the flask V then by
revolving the screw V 16 draws the parts together until they bind. To separate
the flask, it is only necessary to strike the projection V9 on the fitting V 7 when
the nose V8 will slide off from the bottom board and because of the cam sur-
faces VG the hooks V 13 will be released and this will release the fitting V 14 and
the spring V 18 will throw it off from the flask. In practice where metal flasks
are used, the head of molten metal when poured into the mold causes the flask
to expand. It is therefore necessary to provide at some point in the clamp a
yielding quality so that the clamp can give slightly as the flask enlarges. Prefer-
ably I provide the nose V7 or any other bearing point with a cushion V 19; This

page_text: may be a block or stip of wood or fibre or some composition with asbestos or the
like to make it non-combustible, the particular substance or composition and the
particular location of the cushion being immaterial.
CONCLUSION.
I have now described completely both the cope machine and also the same
machine in all essential particulars for forming the drag portion of the mold.
It will be seen from my description that I have produced a machine which is
substantially automatic throughout in that from the time the flask is placed upon
the crane at one side of the machine until it is delivered by the crane at the
other side of the machine, substantially every movement of the machine is auto-
matic. One in which the sand is automatically measured and is fed through the
pressure plate thereby securing an equal distribution throughout the flask; one
in which the vent pins are automatically and accurately inserted into the mold
throughout, insuring perfect alignment and perfect height with respect to the
pattern and insuring also a perfect stripping when withdrawn from the mold and
the stripping being in perfect alignment, orifices left by the pins will be kept
clear and will not fill in; one in which the sprues are automatically inserted and
are perfectly stripped in withdrawing them; one in which one portion of the
runner box pressure plate, automatically strips another portion thereof, one in
which the pattern and flask supporting mechanism are so arranged and manipu-
lated that any desired pressure may be obtained in the mold above any desired
point in the pattern irrespective of the relative heights of the different portions of
the pattern; one in which a perfect stripping of the pattern from the mold is ob-
tained; one in which the chaplets are protected from the sand throughout the for-
mation of the mold; one in which the bottom board is carried into the machine
and in which the false flask is automatically lifted off the flask to permit
the bottom board to be clamped to the flask. One of the important
features of my invention however, is in the pattern and flask sup-
porting mechanism. When this mechanism is carefully analyzed, it will
be seen that by virtue of the fact that the patterns and flask can be
directly supported either from the piston head direct, or from any one of three
auxiliary supporting frames and that those frames through a suitable arrange-
ment of tripping mechanism can be made to either advance with the piston head
or be tripped at any desired time during the upward movement of the piston
head. This enables me to cause any particular part or parts of the pattern or
the flask to be given any movement or succession of movements desired, and to cease
their movement at any desired period of the pressing operation. The result being
that any desired article can be molded irrespective of the shape or configuration
of the surface. Of course to adapt my machine to mold different articles, the
tripping mechanisms might have to be altered or adjusted but obviously that
can be done without departing from the spirit of my invention. I wish also to
have it clearly understood, that while I have in my present application shown
stationary pressure mechanism above the flask and movable pressure mechanism
below the flask I do not wish to be limited in this direction, so far as the broad
features of my invention are concerned. The most essential object in a molding
machine is to secure a proper compression of the sand at every point in the mold
irrespective of the shape or configuration of the pattern and the mold to be
formed. Therefor, while my present arrangement of stationary upper pressure
mechanism and movable lower pressure mechanism is perhaps preferable yet in
reality the real gist of the invention lies not in the movement of the pressure
mechanism with respect to the frame of the machine but in the movement of the
various parts of the pressure mechanism with respect to each other and to the
pattern and flask.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
. 1. .A molding machine in which suitable provision is made for first compressing

page_text: the sand in the flask by means of a pattern made in sections and then continuing
the compression by means of some of the said sections while the others remain
inoperative.
2. A molding machine in which suitable provision is made for first compressing
the sand in the flask by means of a pattern made in sections, then continuing the
compression by means of some of the said sections while the others remain
inoperative and then simultaneously operating all of the said sections to give a
final compression to the sand in the flask.
3. A mold forming machine comprising mechanism for first inserting the
sprues into the flask; mechanism for next compressing the sand; mechanism for
next inserting the vent pins and mechanism connecting the above named mechan-
isms for causing them to operate in the order named, substantially as described.
4. A mold forming machine comprising mechanism for first inserting the sprues
into the flask; mechanism for next placing the sand in the flask; mechanism for
next compressing the sand and mechanism connecting the above named mechan-
isms for causing them to operate in the order named, substantially as described.
5. A mold forming machine comprising mechanism for first inserting the sprues
into the flask; mechanism for next inserting the sand into the flask; mechanism
for next compressing the sand; mechanism for next inserting the vent pins and
mechanism connecting the above named mechanisms for causing them to operate
in the order named, substantially as described.
6. A mold forming machine comprising mechanism for first inserting the sprues
into the flask; mechanism for next compressing the sand; mechanism for next
inserting the vent pins; mechanism for next stripping the sprues from the com-
pleted mold; mechanism for next stripping the vent pins and mechanism con-
necting the above named mechanisms for causing them to operate in the order
named, substantially as described.
7. A mold forming machine comprising mechanism for first inserting the sprues
into the flask; mechanism for next inserting the sand into the flask; mechanism
for next compressing the sand; mechanism for next stripping the sprues from
the mold and mechanism connecting the above named mechanisms for causing
them to operate in the order named, substantially as described.
8. A mold forming machine comprising mechanism for first inserting the sprues
into the flask; mechanism for next inserting the sand into the flask; mechanism
for next compressing the sand, mechanism for next inserting the vent pins;
mechanism for next stripping the sprues from the mold; mechanism for next
stripping the vent pins from the mold and mechanism connecting the above
named mechanisms for causing them to operate in the order named substantially
as described.
9. A mold forming machine comprising mechanism for first inserting the sprues
into the flask; mechanism for next placing the false flask on to the flask;
mechanism for next compressing the sand; mechanism for next inserting the
vent pins; mechanism for next stripping the sprues from the mold; mechanism
for next stripping the vent pins from the mold and mechanism connecting the
above named mechanisms for causing them to operate in the order named, sub-
stantially as described.
10. A mold forming machine comprising mechanism for first inserting the
sprues into the flask; mechanism for next placing the false flask on to the flask;
mechanism for next introducing the sand into the flasks; mechanism for next
compressing the sand; mechanism for next introducing the vent pins into the
mold: mechanism for next stripping the sprues; mechanism for next stripping
the vent pins; mechanism for next removing the false flasks from the flask and
nechanism connecting the above named mechanisms for causing them to operate
in the order named, substantially as described.
11. A mold forming machine comprising mechanism for carrying the flask
Droner into the machine; mechanism for placing the outer false flask on to the
flask proper; mechanism for inserting the sprues into the flask; mechanism for

page_text: inserting a preliminary lot of sand into the flask; mechanism for placing the
inner false flask on to the flask or runner box; mechanism for introducing a
second lot of sand into the flask; mechanism for compressing the sand to form
the mold; mechanism for inserting the vent pins, into the mold; mechanism for
stripping the sprues and mechanism for stripping the vent pins, substantially as
described.
12. A mold forming machine, comprising mechanism for carrying the flask
proper into the machine; mechanism for placing the outer, false flask on to the
flask proper; mechanism for inserting the sprues into the flask; mechanism.for
inserting a preliminary lot of sand into the flask; mechanism for placing the
inner false flask on to the flask or runner box; mechanism for introducing. a
second lot of sand into the flask; mechanism for compressing the sand to form
the mold; mechanism for inserting the vent pins into the mold; mechanism for
stripping the sprues; mechanism for stripping the vent pins and mechanism for
transferring the flask containing the mold from the machine, substantially as
described.
13. A mold forming machine, comprising mechanism for placing the outer false
flask on to the flask proper; mechanism for inserting the sprues into the flask;
other mechanism for placing the inner false flask on to the flask or runner box;
mechanism for introducing the sand; mechanism for compressing the sand to
form the mold; mechanism for inserting the vent pins into the mold and
mechanism for stripping the sprues, vent pins and patterns from the mold, sub-
stantially as described.
14. A mold forming machine comprising mechanism for placing the outer false
flask on to the flask proper; mechanism for inserting the sprues into the flask;
mechanism for inserting the sand into the flask; other mechanism for placing the
inner false flask on to the flask or runner box; mechanism for compressing the
sand to form the mold; mechanism for inserting the vent pins into the mold;
mechanism for stripping the sprues and mechanism for stripping the vent pins,
substantially as described.
15. A crane mechanism comprising a vertically reciprocating part to which a
crane arm is pivoted; mechanism for reciprocating said part vertically; tripping
mechanism adapted to be struck by the arm when the latter is thrown to its
inner position, said tripping mechanism adapted to operate the vertically recipro-
cating mechanism to lower the crane arm and means for throwing said crane arm
out when it has reached the desired lower position, substantially as described.
16. A crane mechanism comprising a vertical fluid pressure cylinder and its
piston rod, a crane arm pivoted thereto and adapted to swing horizontally, trip-
ping mechanism adapted to be struck by the crane arm when the latter is thrown
to the desired position, said tripping mechanism connected with the cylinder
and adapted to release the pressure beneath the piston head and allow the crane
arm to drop and mechanism for throwing the arm back horizontally when, it has
reached the desired lower position, substantially as described.
17. A crane mechanism comprising a vertical fluid pressure cylinder and its
piston rod, a crane arm pivoted thereto and adapted to swing horizontally, a catch
to engage said crane arm when thrown to its inner position, tripping mechanism
adapted to be struck by a moving part, said tripping mechanism controlling the
cylinder to move the crane arm vertically and mechanism for throwing, the crane
arm horizontally when it has reached the desired vertical position; substantially
as described..
18. A crane mechanism comprising a vertical fluid pressure cylinder and its
piston rod, a crane arm pivoted thereto and adapted to swing horizontally, a catch
adapted to engage the crane arm when it is swung to its inner delivering position.
a lever adapted to be struck by the crane arm when it is swung to said position,
connections between said lever and the cylinder valve adapted to release the pres-
sure and allow the piston to drop, means for releasing the catch when the arm is

page_text: dropped to the desired extent and a spring for throwing the arm out, substan-
tially as described.
19. The combination with a molding machine and its flask of a crane arm for
delivering the flask into the machine comprising a crane arm, vertically movable
mechanism to which the crane arm is pivoted to swing horizontally, a catch for
engaging said arm when it is swung in toward the machine to deliver the flask,
a lever adapted to be struck by said arm when it is swung in, connections extend-
ing from said lever to cause the vertically reciprocating mechanism to drop and
thus deposit the flask in the machine, means for releasing the arm after the flask
is deposited and a spring to throw the arm to its outer position when released,
substantially as described.
20. The combination with a molding machine and its flask of a crane arm
pivoted to swing on the piston rod of a vertically fluid pressure cylinder
a catch
for engaging the arm when swung to its inner position to deposit the flask; a
lever connected with the cylinder valve adapted to be struck by the arm when
thrown to its inner position and thus allow the pressure to escape from the
cylinder and the arm to lower to deposit the flask, said lever shaped and arranged
so that pressure on it by the arm is released as the arm moves downward a spring
for returning said valve to its closed position when released from the arm and a
spring for throwing the arm out when the flask is deposited, substantially as
described.
21. The combination with a molding machine flask, of a crane for handling said
flask, consisting of arms adapted to engage the trunnions of the flask and a catch
located on the arm to hold the flask in a horizontal position, the engaging face
of said catch being bevelled to permit the catch to pass down past the engaging
face of the flask when the flask has been deposited, substantially as described.
22. The combination with the flask of a crane arm for handling same, said
crane arm provided with two arms and each adapted to engage one of the trun-
nions of the flask, the end of each arm recessed to receive the trunnions, each
arm provided adjacent to the recess with a vertical projection or stop, substantially
as described.
23. The combination with a molding machine and its flask, of crane mechanism
for carrying said flask out of the machine comprising a crane arm pivoted to
swing horizontally on vertically movable mechanism, means for engaging said
crane arm in its inner receiving position until the load is deposited on the crane
arm, stop mechanism adapted to be struck after the load is on the crane arm and
to release the crane arm, spring for throwing the crane arm to its outer position
and means for lowering the vertically movable mechanism to which the crane
arm is pivoted, substantially as described.
24. In a molding machine the combination with a vertically movable portion of
the machine and an arm or projection thereon, of a crane arm; a stationary part;
a spring catch on the arm; a vertically movable shoulder on the stationary part
over which the spring catch engages, a lever pivoted to the stationary part and
connected with the vertically movable shoulder; said lever tilted by the projec-
tion on the vertically movable portion and adapted thereby to move the shoulder
out of engagement with the catch, substantially as described.
25. In a molding machine the combination with the flask proper of a false
flask means for normally suspending it above the flask proper, mechanism for
dropping said false flask on to the flask proper and mechanism for moving upward
together the false flask and flask proper, substantially as described.
26. In a molding machine the combination with the flask proper of a false
flask, means for normally suspending it above the flask proper, mechanism for
dropping said false flask on to the flask proper and mechanism for moving the
false flask upward until engaged by the said suspending mechanism, substantially
as described.
27. In a molding machine a false flask engaged in its normal position by catches

page_text: engaged to a stationary part of the machine and means for freeing said catches
to release the flask and allow it to drop, substantially as described.
28. In a molding machine a flask, a false flask, means for suspending it in the
machine above the flask 'proper and guide rods between the false flask and a
stationary part of the machine adapted to guide the false flask in its vertical
movement, substantially as described.
29. In a molding machine, the combination with the flask proper and the false
flask adapted to be moved against the flask proper, of cushions for relieving the
blow when the false flask is moved against the flask proper, substantially as
described.
30. In a molding machine, the combination of the flask proper and a false
flask, means for suspending it above the same and permitting to be dropped
thereon, guide rods engaged to the false flask and cushions adjacent to the guide
rods and adapted to engage a part of the same and thus cushion the blow of the
descending flask, substantially as described.
31. In a molding machine, the combination with the flask proper, of a false
flask means for suspending it in the machine, guide rode engaged to the flask
and movable in a stationary part of the frame, fluid cups adjacent to said rods
and plungers on the rods adapted to enter the fluid cups whereby the rods and
consequently the flask are cushioned by the cups, substantially as described.
32. In a molding machine the combination with the flask proper and the
mechanism for lowering the same to its position in the machine, of a projection
in the path of the descending mechanism adapted to be struck thereby, a false
flask, mechanism for supporting the same in the machine and connections between
the said supporting mechanism and said projection whereby when the projection
is moved by the descending mechanism, the false flask is released, substantially
as described.
33. In a molding machine, the combination with the flask proper adapted to be
lowered to its position in the machine of a false flask means for supporting it from
the frame of the machine above the flask proper and mechanism for holding it
normally in its upper position, a projection in the path of the descending mechan-
ism and connections between said projection and the false flask suspending
mechanism whereby as the flask proper is lowered to its position, it strikes said
projection and releases the false flask and allows the latter to drop on to the flask
proper, substantially as described.
34. In a molding machine a movable sprue and a cushion to receive the sprue
at the end of its movement, substantially as described.
35. In a molding machine a vertically movable sprue and mechanism for engag-
ing it in its upper or normal position, mechanism for releasing said engaging
mechanism to allow the sprue to drop and a cushion to receive the blow of the
descending sprue, substantially as described.
36. In a molding machine a vertically movable sprue mechanism for engaging
the said sprue in its upper or normal position; mechanism for releasing the sprue
from said engaging mechanism and allow it to drop, a plunger or piston carried
by the sprue and a dash pot adapted to receive said plunger, substantially as
described.
37. In a molding machine the combination with a projection arranged to
receive a sprue of a vertically movable sprue having its lower end recessed to fit
said projection when in its lower position and a restricted orifice leading from said
recess to allow the air to gradually escape from said recess and thus permit the
sprue to settle against said projection, substantially as described.
38. In a molding machine a vertically movable sprue; mechanism for engaging
said sprue in its upper position; mechanism to release the sprue and allow it to
drop and vertically reciprocating mechanism for moving the sprue-engaging
mechanism down to engage the sprue and then to elevate it together with the
sprue, substantially as described.

page_text: 39. In a molding machine, the combination with a vertically movable pattern
and its supporting mechanism, of a vertically movable sprue adapted to drop down
and rest on the pattern mechanism and to be carried up by the upward movement
thereof, substantially as described.
40. In a molding machine, the combination with a vertically movable pattern
and its supporting mechanism, of a vertically movable sprue adapted to drop
down and rest on the pattern mechanism and to be carried up by the movement
thereof and mechanism disengaged from said sprue when in its lower position and
adapted to engage the sprue when it is moved up by the pattern mechanism and
carry it thence to its maximum height, substantially as described.
41. In a molding machine a vertically movable sprue provided with a series of
notches and a spring catch to engage said notches and hold the sprue in its upper
or normal position substantially as described.
42. In a molding machine a vertically movable sprue provided with a series of
notches, a spring catch to engage said notches; a vertically movable fitting carry-
ing said catch and mechanism for moving said fitting vertically, substantially as
described.
43. In a molding machine the combination with the plunger, a fixed ring
through which the plunger slides and one or more sprues sliding along the face
of the plunger, of mechanism for first stripping the sprues through the plunger
and then stripping the plunger through the fixed ring, substantially as described.
44. In a molding machine the combination with one or more sprues adapted to
enter the runner box of the flask, of a plunger adapted also to enter said runner
box, said sprues sliding in recesses in the face of the plunger and mechanism for
first stripping the sprues through the plunger and then withdrawing the plunger,
substantially as described.
45. In a molding machine the combination of a vertically movable hollow
plunger, of a sprue fitting working in said plunger and provided with arms
extending through slots in the face of the plunger and a sprue attached to each
of the arms on the exterior of the plunger, substantially as described.
46. In a molding machine, the combination with a plunger and one or more
sprues, said plunger and sprues being vertically movable, of a crank shaft carry-
ing mechanism to engage the sprues a crank sleeve surrounding the shaft and
carrying mechanism to engage the plunger and stop mechanism between the crank
shaft and crank sleeve whereby a partial revolution of the shaft withdraws the
sprues and the continued revolution thereof withdraws the plunger, substantially
as described.
47. In a molding machine a plunger adapted to enter the runner box and one
or more sprues, the lower end of which project into the runner box below the end
of the plunger, the surface of said sprues bearing against the surface of the plunger
and the end of the plunger adjacent to the sprues being tapered whereby a
tapered surface is formed in the mold adjacent to the sprue hole, substantially as
described.
48. In a molding machine a vertically movable sprue and a spring catch for
holding it in its upper position, one of said parts being provided with a series
of engaging surfaces whereby the sprue can be engaged at variable heights, sub-
stantially as described.
49. In a molding machine the combination with the vertically movable frame
and vertically movable pattern mechanism of a vertically movable sprue adapted
to drop down and rest on the pattern mechanism and to be carried up by the
movement thereof, mechanism disengaged from said sprue when in its lower posi-
tion and adapted to engage the sprue when it is moved up by the pattern mechan-
ism and carry it to its maximum height the engaging surfaces between the sprue
and its engaging mechanism being in vertical series whereby the sprue may be
engaged at variable heights, substantially as described.
50. In a molding machine the combination with the flask and mechanism for
moving it to its position in the machine of a projection in the path of the

page_text: descending mechanism adapted to be struck thereby, a vertically movable sprue;
mechanism for engaging said sprue in its upper or normal position and connec-
tions between said sprue engaging mechanism and, said projection whereby the
descent of the flask releases the sprue, substantially as described.
51. In a molding machine the combination with the flask and mechanism for
inoving it to its position in the machine of a projection in the path of said flask,
mechanism adapted to be struck thereby, and a sprue and mechanism engaging
said sprue, and connections between said mechanism and said projection whereby
a movement of said projection moves the said sprue, substantially as described.
52. In a molding machine the combination with the flask and mechanism for
moving it to its position in the machine, vertically movable pattern mechanism
and a vertically movable sprue adapted to drop down and rest on the pattern and
to be carried up thereby; mechanism for engaging the sprue when carried up
by the pattern mechanism to lift the sprue to its maximum height, a projection
in the path of the flask mechanism, connections between said projection and the
sprue lifting mechanism whereby the descending flask mechanism releases the
sprue and allows it to drop on the pattern mechanism substantially as described.
53. In a molding machine the combination with a flask and mechanism for
moving it to its position in the machine of a false flask; mechanism for engaging
said false flask in its upper position; a vertically movable sprue and mechanism
for engaging it in its upper position; an engaging portion in the path of the flask
mechanism adapted when struck by the flask mechanism to be moved; and con-
nections between said sprue engaging mechanism; said false flask engaging
mechanism and said engaging portion whereby a movement of the flask mechanism
releases the false flask and sprue substantially as described.
54. A molding machine in which the sand is delivered to the flask through an
opening in the pressure plate, substantially as described.
55. In a molding machine the combination with a pressure plate provided with
an opening in its centre of a sand delivery chute adjacent to said opening to
deliver the sand therethrough, substantially as described.
56. In a molding machine the combination with the flask and mechanism for
moving it to its place in the machine of a sand reservoir provided in its lower
end with one or more doors or valves through which the sand is discharged, a
projection in line with the flask mechanism adapted to be struck thereby and
connections between the projection and the sand doors for opening the latter
substantially as described.
57. The combination with a measuring receptacle of a supplementary measur
ing receptacle and mechanism for discharging the contents of the latter through
the former, substantially as described.
58. The combination of a main measuring receptacle, a supplementary measur-
ing receptacle communicating with the first, one or more doors or valves govern-
ing the discharge from the main receptacle, one or more doors or valves govern-
ing the communication between the two receptacles and one or more doors or
valves governing the admission to the supplementary receptacle and means for
operating each set of doors or valves independent of the others, substantially as
described.
59. The combination of a main measuring receptacle a supplementary measur
ing receptacle communicating with the first, one or more doors or valves governing
the discharge from the main receptacle, one or more doors or valves governing
the communication between the two receptacles, and one or more doors or valves
governing the admission to the supplementary receptacle, means for opening
successively the discharge doors for the two receptacles and means for subsequently
opening the admission set for the supplementary receptacle, and subsequently
closing all the doors, substantially as described:
60. A measuring receptacle provided with one or more inlet or admission doors
or valves, and one or more discharge doors or valves, means for opening the dis-
charge set and means for subsequently closing the discharge set and opening the

page_text: inlet set and then closing the inlet set, said means for opening the discharge set`
being independent of the balance of the actuating means, substantially as
described.
61. A reservoir provided in its bottom with one or more doors or valves through
which the contents are discharged, another reservoir mounted above the first and
separated therefrom by one or more doors or valves through which the contents
of the second reservoir are discharged and one or more doors or valves above the
second reservoir for governing the admission into the reservoir and means for
directing the material to the latter doors, substantially as described.
14. "
62. A reservoir provided with one or more doors or valves through which the
contents are discharged, catch mechanism for holding said doors or valves closed,
another reservoir mounted above the first and separated therefrom by one or more'
doors or valves, said latter doors or valves held closed by catch mechanism*;
mechanism for releasing the lower set of doors, mechanism for releasing the second
set of doors and one or more doors or valves controling the inlet to the upper or
second reservoir with positively driven mechanism for opening and closing the
said upper doors, substantially as described.
..
63. A sand reservoir provided with one or more doors or valves through which
the contents are discharged, said doors or valves connected with a revolving shaft,
a gear on said shaft, a catch for engaging said gear to prevent its revolution and
thus allow the doors to open, means for releasing the catch and a gear connected
with the gear on said shaft and mechanism for revolving the first named gear to
close the doors, substantially as described.
64. A reservoir comprising the following mechanism: a shaft G 3 and mechan-
ism for revolving same; a double segment G4; a sleeve G 14 carrying a seg-
ment G 15; a shaft G11 carrying a segment G 13; a beveled gear G 19 on the
sleeve G 14; a gear C meshing with the gear G 19, said gear C mounted on the
trunnion of the door B4; a gear G 20 on the shaft G 11 meshing with the gear E2
loose on the trunnion B 12 a gear E fixed to the trunnion B 12 a pawl on the
gear E2 to engage the gear E and a pawl on the stationary part to engage the
gear C, substantially as described.
65. Two reservoirs one mounted above the other, the lower reservoir provided
with one or more doors or valves through which the contents are discharged, one
or more doors or valves between the two reservoirs, one or more doors or valves
above the upper reservoir and mechanism for closing the lowest doors and subse-
quently opening the upper doors by the same movement of said mechanism, 'sub-
stantially as described.
66. Two reservoirs one mounted above the other, the lower reservoir provided
with one or more doors or valves, governing the discharge from the same, one or
more doors or valves between the two reservoirs; one or more doors or valves
above the two reservoirs to govern the admission thereto, a revolving shaft
arranged to first close the lower set of doors and subsequently in the same revolu-
tion to open the upper set of doors and mechanism connected with the shaft
whereby on a revolution of the same in the opposite direction the middle and
upper set of doors are closed, substantially as described.
7
67. A reservoir provided with one or more doors or valves through which the
contents are discharged and one or more doors or valves governing the admission
to the reservoir, catch mechanism for holding the discharge doors normally closed,
an operating shaft and connections between the shaft and each set of doors
whereby a revolution of the shaft in one direction operates to close the lower set
of doors and open the upper set and a revolution of the shaft in the opposite
direction operates to close the upper set without affecting the lower set, substan-
tially as described.
68. A reservoir provided with one or more doors or valves.through which the
contents are discharged, catch mechanism for holding said doors or valves normally
closed, mechanism to release the doors and one or more doors or valves controling
the inlet to said reservoir, a shaft and connections for opening and closing the

page_text: inlet doors and connections between the shaft and the discharge doors whereby
the latter are closed by the shaft before the inlet doors are opened, the catch
mechanism for the discharge doors being independent of the door actuating
mechanism, substantially as described.
69. A reservoir comprising the following mechanism: a shaft G3 and mechan-
ism for revolving the same; a double segment G4; a sleeve G 14 carrying a
segment G 15; a shaft G 11 carrying a segment G 13; a beveled gear G 19 on the
sleeve G 14 and a gear C meshing with the gear G 19, said gear mounted on the
trunnion of the door B4, substantially as described.
70. A reservoir provided with one or more discharge doors or valves, one or
more inlet doors or valves; a shaft G3 and mechanism for revolving same; a
double segment G4; a sleeve G 14 carrying a segment G 15; a shaft G 11 carry-
ing a segment G 13; a beveled gear G 19 on the segment G4; a gear C meshing.
with the gear G 19, said gear C connected with the discharge door or doors and
connections between the shaft G 11 and the inlet door or doors, substantially as
described.
71. In a molding machine, the combination with the flask proper, mechanism
for carrying the same to its position in the machine and an engaging portion in
line with said flask mechanism adapted to be struck and moved thereby, of a
sand reservoir and means for controling the discharge from the same, a vertically
movable false flask and mechanism for engaging it above the flask proper and
connections between the above named engaging portion, the false flask engaging
mechanism and the sand reservoir discharge mechanism whereby a movement of
said engaging portion operates to discharge the sand and release the false flask,
substantially as described.
2. In a molding machine a sand reservoir provided with one or more doors or
valves through which the sand is discharged, mechanism engaging said doors or
valves when closed; a vertically movable plunger and mechanism for engaging it
in its upper position; a flask and its runner box, said plunger constituting a
pressure plate for the runner box; a vertically movable false flask and mechanism
for engaging it in its upper position and connecting mechanisms between all said
three engaging mechanisms whereby a movement of the connecting mechanism
will release all said parts, substantially as described.
73. In a molding machine, the combination with the flask proper; mechanism
for carrying the same to its position in the machine and a projection in line with
said flask mechanism adapted to be struck and moved thereby, of a sand reservoir
one or more doors or valves controling the discharge from the same; a vertically
movable sprue and mechanism for engaging it in its upper position; a vertically
movable false flask and mechanism for engaging it in its upper position and con-
nections between said projection and the false flask engaging mechanism, the
sprue engaging mechanism and the sand reservoir discharge mechanism, whereby
a movement of the projection operates to discharge the sand and move the false
flask and sprue, substantially as described.
74. In a
molding machine, an outer false flask and an inner false flask, each
vertically movable in the machine, and mechanism for guiding each in the vertical
movement, substantially as described.
75. In a molding machine the combination with the flask proper and its runner
box of an inner false flask adapted to move vertically in the machine, said flask
being of substantially the same diameter as the runner box on the flask proper
and adapted to rest thereon when in its lower position and guide mechanism for
guiding said inner false flask in its movement in the machine, substantially as
described.
76. In a molding machine, the combination with the flask proper and its runner
box of an inner false flask adapted to move vertically in the machine, said flask
being of substantially the same diameter as the runner box and adapted to rest
thereon when in its lower position, guide mechanism for directing its vertical

page_text: movement and catch mechanism for engaging it in its upper position, substan-
tially as described.
77. In a molding machine the combination of an outer and an inner false flask,
mechanism for engaging the inner flask in its upper position and mechanism for
releasing said engaging mechanism to allow the flask to drop, substantially as
described.
78. In a molding machine the combination with the vertically movable pattern
mechanism, the flask proper and its runner box of one or more sprues and means
for temporarily suspending them above the pattern mechanism and a false flask
surrounding the sprues and adapted to be dropped on to the runner box substan-
tially as described.
79. In a molding machine, the combination with the pressure mechanism pro-
vided with an opening in the center thereof of mechanism engaged above said
pressure mechanism and adapted to drop down and close said opening, substan-
tially as described.
80. In a molding machine the combination with the pressure mechanism pro-
vided with an opening in the center thereof, of a plunger engaged above said
pressure mechanism adapted to drop down and close said opening and adapted to
be pushed up by the upward movement of the pattern mechanism, substantially
as described.
81. In a molding machine, the pressure mechanism having an opening in the
center, of a plunger engaged above said opening, adapted to be dropped down to
close the opening and stop mechanism adapted to engage said plunger and arrest
its upward movement and thus cause it to act as a part of the pressure mechanism,
substantially as described.
82. In a molding machine, the combination of a plunger, a pressure ring
through which the plunger slides and a pressure plate provided with an opening
through which the plunger passes, substantially as described.
83. In a molding machine, the combination of the plunger, a pressure ring
through which the plunger slides and a pressure plate provided with an opening
through which the plunger passes, of stop mechanism adapted to engage the
plunger in its upward movement whereby the pressure plate, pressure ring and
plunger together constitute the pressure mechanism, substantially as described.
84. In a molding machine, the combination with the flask its runner box and
vertically movable pattern mechanism of a plunger suspended in the machine
above the pattern mechanism and constituting a pressure plate for the runner
box and adapted when released to drop, said plunger constructed and arranged to
be moved up by the upward movement of the pattern mechanism and mechanism
adapted to engage said plunger in its upward movement and stop the same and
to withdrew the plunger when the pressure has been completed, substantially as
described.
85. In a molding machine, the combination with a vertically movable flask and
its runner box of a plunger constituting a pressure plate for the runner box and
mechanism for engaging the plunger in its upper position and hand mechanism
for tripping said engaging mechanism to allow the plunger to drop, said plunger
adapted to be moved upward by the upward movement of the flask, substantially
as described.
86. In a molding machine the combination with the flask, the runner box and
the plunger constituting a pressure plate for the runner box and mechanism for
engaging the plunger in its upper position, said plunger adapted when released
to drop, of a cushion for receiving the blow of the descending plunger, sub-
stantially as described.
87. In a molding machine, the combination with the flask, the runner box,
a vertically movable plunger constituting a pressure plate for the runner box
and mechanism for engaging the plunger in its upper position, said plunger
adapted when released to drop, of a vertically adjustable cushion to receive the
blow of the descending plunger, substantially as described.

page_text: 88. In a molding machine the combination with the flask and its runner box
of a vertically movable plunger constituting a pressure plate for the runner box
and mechanism for engaging the plunger in its upper position, a vertically
movable false flask and mechanism for engaging it in its upper position and hand
mechanism connected with both said engaging mechanisms whereby a movement
of the hand mechanism releases both the plunger and false flask, substantially as
described.
89. In a molding machine the combination of a false flask, a bottom board
provided with orifices and adapted to move within the flask, a series of vent pins
and mechanism for moving the pins into and out of the false flask through the
bottom board, substantially as described.
90. In a molding machine the combination with the flask and runner box of
pressure mechanism for the runner box consisting of a ring or plate having an
opening, a plunger adapted to fill the same, said ring and plunger adapted to
enter the runner box and said ring provided on its under side adjacent to the wall
of the runner box with a depending flange, substantially as described.
91. In a molding machine, the combination with the flask and runner box of
pressure mechanism for the runner box consisting of a ring or plate having an
opening, a plunger adapted to fill the same, said ring and plunger adapted to enter
the runner box and said ring provided on its under side adjacent to the wall of the
runner box with a depending flange and with another depending flange adjacent
to the plunger, substantially as described.
92. In a molding machine, the combination with the flask and its runner box of
pressure mechanism therefor, consisting of a pressure plate adapted to enter the
Hask and provided with an opening in line with the runner box, a ring or plate
having an opening, a plunger adapted to fill the same, said ring and plunger
adapted to enter the runner box and said ring provided on its under side adjacent
to the wall of the runner box with a depending flange, substantially as described.
93. In a molding machine, the combination with the flask and its runner box
of pressure mechanism therefor, consisting of a pressure plate adapted to enter
the flask and provided with an opening in line with the runner box, a ring or
plate having an opening, a plunger adapted to fill the same, said ring and plunger
adapted to enter the runner box and said ring provided on its under side adjacent
to the wall of the runner box with a depending flange, and with another depend-
ing mange adjacent to the plunger, substantially as described.
94. In a molding machine, a main vertically movable pressure mechanism, an
auxiliary pressure mechanism carried thereby and movable vertically thereon, and
engaging mechanism on a stationary part of the machine for actuating the
auxiliary mechanism through the movement of the main mechanism, substantially
as described.
95. A molding machine comprising main vertically movable pressure mechanism
and two or more sets of auxiliary pressure mechanism carried by said main pres-
sure mechanism, each auxiliary mechanism movable vertically with respect to
said main pressure mechanism and independent of each other, and engaging
mechanism on a stationary part of the machine for actuating the auxiliary
mechanism through the movement of the main mechanism, substantially as
described.
96. In a molding machine, a pattern and flask supporting mechanism consist
ing of a main vertically movable portion carrying two or more sets of auxiliary
supporting mechanism, said auxiliary mechanisms movable with respect to the
main portion, tripping mechanism for each of the auxiliary mechanisms for
lessening the distance between the auxiliary mechanism and the main portion and
engaging mechanism on a stationary part to cause said tripping mechanism to
operate, substantially as described.
97. In a molding machine a pattern and flask supporting mechanism consisting
of a main vertically movable portion carrying an auxiliary supporting mechan
ism and another auxiliary supporting mechanism supported by the first and

page_text: mechanism for independently tripping each of the auxiliary mechanisms when
desired to allow them to lessen the distance between themselves and between each
and the main portion, substantially as described.
98. In a molding machine, a pattern and flask supporting mechanism consisting
of a main vertically movable portion carrying two auxiliary supporting mechan-
isms independent of each other, one of said auxiliary mechanisms supporting a
third auxiliary supporting mechanism and mechanism for independently tripping
the said auxiliary supporting mechanisms at the desired time to allow the distance
between the main portion and the respective auxiliary mechanisms to be lessened,
substantially as described.
99. In a molding machine, a flask and pattern supporting mechanism consisting
of a main vertically movable portion carrying two auxiliary supporting mechan-
isms, one of the said auxiliary supporting mechanisms carrying a third auxiliary
supporting mechanism, mechanism for tripping the third auxiliary mechanism as
the main portion moves upward, mechanism for tripping the auxiliary mechanism
which carries said third auxiliary mechanism as the main portion moves up and
mechanism for tripping the other auxiliary mechanism before the main portion
moves down, substantially as described.
100. In a molding machine, a flask and pattern supporting mechanism consist-
ing of a vertically movable portion, one or more supporting rings or parts carried
directly by said portion and only movable therewith, a crank shaft carried by
said main portion, means for rocking the crank shaft, a frame supported from
said crank shaft having one or more rings or parts for directly supporting the
flask and pattern parts, said frame through the crank shaft movable with respect
to the main portion and another frame supported from another shaft carried by
the main portion, said latter frame carrying one or more pattern and flask sup-
porting parts and movable with respect to the main portion, substantially as
described.
101. In a molding machine the combination with the flask and patterns, of
mechanism for moving the same vertically consisting of a main vertically
movable portion and three frames carried thereby and movable independently
thereof, one of said frames constructed and arranged to be directly supported
alternately by the other two, substantially as described.
102. In a molding machine, the combination with the flask and patterns, of
mechanism for moving the same vertically consisting of three frames independent
of each other, and mechanism for supporting two of the frames from the main
portion but movable with respect thereto and mechanism carried by one of the
frames for supporting the third frame said latter mechanism movable with
respect to the frame which carries it, substantially as described.
103. In a molding machine, the combination with the flask and pattern of
mechanism for moving the same vertically, consisting of a main vertically movable
portion, a crank shaft carried thereby, said crank shaft carrying a frame and the
latter provided with pattern or flask supporting mechanism, an eccentric shaft
also carried by said main portion, said eccentric shaft carrying a frame and the
latter carrying a flask and pattern supporting rings or parts, another crank shaft
mounted in the frame on the first named crank shaft and a third frame carrying
flask and pattern supporting rings or parts, said latter frame adapted to be alter-
nately supported by the frame on the eccentric shaft and by a ring carried on the
second named crank shaft, substantially as described.
104. In a molding machine the combination with the flask and pattern, of
mechanism for moving the same vertically consisting of a main vertically movable
portion, a crank shaft carried thereby, said crank shaft carrying a frame and the
latter provided with pattern and flask supporting mechanism, an eccentric shaft
also carried by said main portion, said eccentric shaft carrying a frame and the
latter carrying a flask and pattern supporting rings or parts, another crank shaft
mounted in the frame on the first named crank shaft, a third frame carrying flask
and pattern supporting rings or parts, said latter frame adapted to be alternately

page_text: supported by the frame on the eccentric shaft and by a ring carried on the second
named crank shaft and one or more flask and pattern supporting rings or parts
carried directly by the main portion and movable only therewith, substantially
as described.
105. In a molding machine the combination with the flask and pattern of
mechanism for supporting same consisting of a movable frame 17, two crank
shafts 146, carried by said frame, a ring D41 carried by said crank shafts and a
ring 143 vertically adjustable in said frame, substantially as described.
106. In a molding machine the combination with the flask and patterns of
mechanism for supporting same consisting of a movable frame D 17, a ring D42
vertically adjustable on said frame D 17, two crank shafts D46 supported from
said ring D42, a ring 141 supported from said crank shafts and an adjustable
ring 143 carried by said ring D 42, substantially as described.
107. In a molding machine the combination with a pressure plate and flask
and means for moving one with respect to the other, of a pattern mechanism
independent of the pressure plate and composed of two or more parts, mechanism
for simultaneously advancing said parts into the sand, mechanism for permitting
one or more of the parts to cease their advance while one or more of the sections
continue to advance and mechanism for finally advancing all the parts simul-
taneously, substantially as described.
108. In a molding machine the combination with a pressure plate, a flask and
two or more pattern parts independent of the pressure plate, said flask movable
with respect to the pressure plate of mechanism for moving one or more of the
pattern parts into the flask while one or more of the parts remain stationary with
respect to the flask and mechanism for picking up said stationary portion and
moving it into the flask, substantially as described.
109. In a molding machine the combination with a pressure plate a flask and
two or more parts independent of the pressure plate, said flask movable with
respect to the pressure plate of mechanism for advancing one or more of the
pattern parts into the flask while one or more of the pattern parts remain
stationary with respect to the flask and mechanism for subsequently moving said
stationary part of the pattern with the part previously moved while the flask
remain stationary, substantially as described.
110. In a molding machine, the combination with pressure mechanism, of a
flask and two or more pattern parts, said flask supported independent from the
pattern parts; mechanism for moving the flask and pattern parts toward the
pressure mechanism and mechanism for permitting one or more of the pattern
parts to stand still with respect to the pressure mechanism while the flask and
one or more of the pattern parts continue to advance toward the pressure
mechanism, substantially as described.
111. In a molding machine, the combination with pressure mechanism and a
flask and means for moving it with respect to the pressure mechanism of a pattern
independent of the pressure mechanism composed of two or more parts, mechanism
for advancing the pattern parts toward the pressure mechanism and mechanism
for allowing one or more of said pattern parts to cease its movement with respect
to the pressure mechanism while the other part or parts still advance toward it,
substantially as described.
112. In a molding machine, the combination with pressure mechanism and the
flask, of a pattern composed of one or more parts, mechanism for moving the
pattern, flask and pressure mechanism each with respect to the other to create
a pressure; mechanism for allowing one or more of said pattern parts to cease
its movement with respect to the pressure mechanism while the flask and pressure
mechanism move with respect to each other and mechanism for allowing the flask
to stand still with respect to the pressure mechanism while the pattern and pres-
sure mechanism move with respect to each other, substantially as described.
113. In a molding machine, the combination with pressure mechanism, of a
flask and two or more pattern parts; mechanism for raising simultaneously the

page_text: flask and pattern parts toward the pressure mechanism; mechanism for permitting
one or more parts of the pattern to cease its upward movement while one or more
parts of the pattern and the flask continue to move upward; mechanism for per-
mitting the flask to cease its upward movement while one or more of the pattern
parts continue to move upward and mechanism for moving all the pattern parts
upward while the flask remains stationary with respect to the pressure mechanism
above, substantially as described.
114. In a molding machine, the combination with pressure mechanism, of a
flask and three or more pattern parts; mechanism for raising simultaneously the
flask and pattern parts toward the pressure mechanism; mechanism for permitting
two or more of the pattern parts to remain stationary with respect to the pressure
mechanism while one or more of the pattern parts and the flask move upward;
mechanism for permitting the flask to cease its upward movement while one or
more of the pattern parts continues to move upward and mechanism for picking
up the other pattern parts and moving all of them simultaneously while the flask
remains stationary, substantially as described.
115. In a molding machine the combination with stationary depending pressure
mechanism of a flask and two or more pattern parts said flask and each of said
parts each mounted independently of the other and mechanism for moving each
of said parts and flask vertically with respect to the pressure mechanism and
independently of each other, substantially as described.
116. A chill support for a sand mold having its upper surface inclined and
supports arranged at intervals on the upper face to sustain the chill above the
inclines, substantially as described.
117. A chill support for a sand mold having its upper surface inclined and its
under surface channeled, and supports arranged at intervals on the upper face to
sustain the chill above the inclines, substantially as described.
118. In a molding apparatus the combination with one or more pattern parts
and mechanism for moving them into the flask, of the flask, the chill and the
chill support, the latter comprising a horizontal portion on which the chill rests
and a vertical portion extending upwardly along the face of the chill to protect
the latter, said vertical portion and the adjacent pattern part being movable with
respect to each other, substantially as described.
119. In a molding apparatus, the combination with one or more pattern parts
and mechanism for moving them into the flask, of the flask, the chill on which
the flask rests, and the chill support, the latter having a horizontal portion on
which the chill rests, and a vertical portion, the upper end of the latter com-
prising a portion of the pattern, substantially as described.
120. In a molding apparatus, the combination of one or more pattern parts,
mechanism for moving them into the flask, the flask, the chill and the chill sup-
port, the latter having a portion that forms a lower sand box or lower false flask,
said chill support and the adjacent pattern part being movable with respect to
each other, substantially as described.
121. In a molding machine, the combination with vertically movable flask and
pattern supporting mechanism and a shaft carried by said vertically movable
mechanism, said shaft provided with means for actuating said flask or pattern
of an arm on said shaft and a stop on the frame of the machine whereby the arm
and shaft are tilted as the mechanism ascends, substantially as described.
122. In a molding machine the combination with vertically movable flask and
pattern supporting mechanism, of a crank shaft carried by said mechanism,
another crank shaft carried by said first named crank shaft and carrying the flask
or a pattern, arms on each of the crank shafts and stop mechanism on the frame
whereby each of said shafts is tilted as the mechanism moves upward, substantially
as described.
123. In a molding machine, the combination with vertically movable pattern
and flask supporting mechanism of at least two shafts carried by said mechanism
each of said shafts provided with means for actuating said flask or pattern

page_text: mechanism and an arm on each shaft adapted as the mechanism and shafts move
vertically to contact with a stationary portion and thus tilt each shaft, substan-
tially as described.
124. In a molding machine, the combination with vertically movable flask and
pattern supporting mechanism of a shaft carried by said mechanism said shaft pro-
vided with means for actuating said flask or pattern mechanism, an arm on the
shaft, a stationary stop for tilting said arm as the mechanism ascends and means
to engage the arm and revolve the shaft back to its normal position as the
mechanism descends, substantially as described.
125. In a molding machine, the combination with vertically movable flask and
pattern supporting mechanism, of a shaft carried by said mechanism, said shaft
provided with means for actuating said flask or pattern mechanism, an arm on
said shaft provided with a segment gear, stop mechanism carried by the frame to
engage the arm and tilt it as the mechanisin ascends and a rack carried by the
frame to engage the segment and return the shaft to its normal position as the
mechanism descends, substantially as described.
126. In a molding machine the combination of the flask and a plate carrying a
series of vent pins, said flask and plate movable with respect to each other, and
mechanism for adjusting each of said pins vertically in said plate, substantially
as described.
127. In a molding machine, the combination with a vent pin frame carrying a
series of vent pins adjustable with respect to the frame, of mechanism for posi-
tively forcing said vent pins into and withdrawing them from the sand, substan-
tially as described.
128. In a molding machine the combination with a pressure plate of a vent pin
frame or plate carrying a series of vent pins- adjustably supported in said frame,
said pressure plate provided with series of orifices through which the vent pins
pass and strip, substantially as described.
129. In a molding machine, the combination with a pressure plate, of a vent
pin frame or plate carrying a series of vent pins adjustably supported in said
frame, said pressure plate provided with a series of orifices, through which the
vent pins pass and strip and mechanism for positively moving the vent pins verti-
cally in both directions, substantially as described.
130. In a molding machine, a vent pin plate or frame carrying a series of vent
pins, said pins adjustably clamped in place by a series of strips and clamping
screws, substantially as described.
131. In a molding machine the combination with vertically movable pattern
mechanism and a series of vertically movable vent pins, of mechanism for operat-
ing on the vent pins to force them into the mold and mechanism between the
pattern mechanism and the vent pin operating mechanism whereby a movement
of the pattern mechanism operates the vent pin operating mechanism, substan-
tially as described.
132. In a molding machine, the combination with vertically movable flask and
pattern supporting mechanism, of a series of vent pins and mechanism for forcing
them into the mold and engaging mechanism on the vertically movable flask and
pattern supporting mechanism for throwing said vent pin operating mechanism
into operation, substantially as described.
133. In a molding machine the combination with a vent pin frame or plate, a
series of vent pins carried thereby of a fluid cylinder, connections between the
piston of said cylinder and the vent pin plate for moving the plate vertically
and mechanism on a movable part of the machine connected with the valve of sai
cylinder for moving said valve, substantially as described.
134. In a molding machine, the combination with a series of vertically movable
vent pins. and mechanism for forcing them into the mold, of a sand reservoir, one
or more doors or valves controlling the outlet thereof and connections extending
from said doors or valves to said vent pin operating mechanism whereby the
motion of the latter closes the said sand doors or valves, substantially as described.

page_text: 135. In a molding machine, the combination with a series of vent pins and
mechanism for moving them vertically, of vertically movable sprue lifting
mechanism adapted to engage the sprues and lift them out of the mold, and con-
nections between said sprue lifting mechanism and said vent pin operating
mechanism whereby a movement of the latter moves the sprue lifting mechanism,
substantially as described.
136. In a molding machine, the combination with the vent pins and mechanism
for moving them vertically, of plunger engaging mechanisin adapted to lift the
plunger out of the mold, and connections between the plunger lifting mechanism
and the vent pin operating mechanism whereby the movement of the latter moves
the plunger lifting mechanism, substantially as described.
187. In a molding machine, the combination with a series of vent pins and
mechanism for moving them vertically, of a sand reservoir and one or more doors
or valves for controling the outlet of the same, connections between said doors or
valves and the vent pin operating mechanism whereby the motion of the latter
close the doors or valves, one or more sprues and mechanism adapted to engage
the same and lift said sprue or sprues out of the mold, connections between said
sprue lifting mechanism and the vent pin operating mechanism whereby a move-
ment of the vent pin operating mechanism moves the sprue lifting mechanism
and a plunger, mechanism for engaging said plunger and lifting it out of the
mold, connections extending from said plunger lifting mechanism to the vent pin
operating mechanism whereby a movement of the latter carries the plunger lifting
mechanism to its engaging position, the construction being such that a movement
of the vent pin operating mechanism to force the vent pins into the mold closes
the sand reservoirs doors or valves, moves the sprue lifting mechanism and plunger
lifting mechanism to their engaging position, substantially as described.
138. In a molding machine, the combination with a series of vent pins and
mechanism for moving them vertically, of a sand reservoir one or more doors or
valves controling the inlet to the same and connections between the vent pin
operating mechanism and said doors or valves whereby a movement of the vent pin
operating mechanism moves the doors or valves, substantially as described.
139. In a molding machine, the combination with a series of vent pins and
mechanism for moving the same vertically, of two sand reservoirs with one or
more doors or valves controling the passage between them and connections
between said doors or valves and the vent pin operating mechanism whereby a
movement of the latter closes said doors or valves, substantially as described.
140. In a molding machine, the combination with a series of vent pins and
mechanism for moving the same vertically of two sand reservoirs, one or more
doors or valves between the two and one or more doors or valves governing the
admission to the upper one and connections between said doors or valves and the
vent pin operating mechanism, whereby a movement of the latter operates to
close both sets of doors or valves, substantially as described.
141. In a molding machine, the combination with a series of vent pins and
mechanism for moving the same vertically of two sand reservoirs, one above the
other, one or more doors or valves between the two, one or more doors or valves
governing the admission to the upper one, connections between said doors or
valves and the vent pin operating mechanism, the sprue lifting mechanism and
connections to the vent pin operating mechanism and the plunger lifting mechan-
ism and connections to the vent pin operating mechanism whereby a movement
of the latter closes both sets of sand doors and lifts both the sprue lifting
mechanism and plunger lifting mechanism, substantially as described.
142. In a molding machine, the combination of the flask, two or more pattern
parts and mechanism for carrying them into the flask from below, mold forming"
mechanism above the flask; mechanism above the flask for withdrawing there-
from the desired upper parts and connections between said upper withdrawing
mechanism and one or more of the pattern parts whereby a movement of said

page_text: upper withdrawing mechanism operates to drop one or more of the pattern parts,
substantially as described.
143. In a molding machine, the combination with two or more pattern parts
and mechanism for carrying the same into the mold of a series of vent pins and
mechanism for operating the same vertically, and connections between said vent
pin operating mechanism and the supporting mechanism for one or more of the
pattern parts whereby a movement of the vent pin operating mechanism acts
to move the pattern supporting mechanism and drop one or more of the pattern
parts away from the mold, substantially as described.
144. In a molding machine, the combination of the flask, the pattern lifting
mechanism for carrying the pattern mechanism into the flask, mold forming
mechanism above the flask; mechanism above the flask for withdrawing there-
from the upper parts desired and connections between the upper withdrawing
mechanism and the pattern lifting mechanism whereby a movement of said upper
withdrawing mechanism releases the pattern lifting mechanism and allows it to
drop, substantially as described.
145. In a molding machine, the combination with mold mechanism having an
engaging portion and means for reciprocating said mold mechanism of another
set of mold mechanism and means for reciprocating it, said latter set of mechan-
ism provided also with an engaging portion and switch mechanism adapted on one
movement of the parts to bring the engaging portions in line with each other
whereby the movement of one will move the other and on another movement of
the parts to bring the engaging portions out of line so they will not engage each
other substantially as described.
146. In a molding machine, the combination with the two sets of mold mechan-
ism-each provided with means for reciprocating it in path parallel with and
adjacent to the other, of a stationary arm or projection on one set and a pivoted
arm or projection on the other set and switch mechanism adapted to engage the
pivoted arm and carry the latter alternately into and out of the path of the other
projection, substantially as described.
147. In a molding machine the combination with a flask and pattern mechanism
and a chaplet carried by the flask, of a shield to protect the chaplet from the
sand, said shield carried by the pattern mechanism and adapted to engage over
and protect the chaplet, substantially as described.
148. In a molding machine the combination with the flask and pattern mechan-
ism and a chaplet carried by the flask of a tube carried by the pattern mechanism
extending to and engaging over the chaplet, said tube having a yielding support
to permit it to recede as the pattern and chaplet approach each other, substan-
tially as described.
149. In a molding machine the combination with the flask and pattern
mechanism and a chaplet carried by the flask of a shield carried by the pattern
mechanism and extending to and engaging the chaplet, said shield having a
yielding support to permit it to recede as the pattern and chaplet approach each
other and a spring for keeping said shield normally in its outer or extended posi-
tion, substantially as described.
150. In a molding machine, the combination with the pattern mechanism of a
chaplet protector and adjuster consisting of a tube extending to and over the
chaplet, said tube carried by a casing on the pattern mechanism and adapted to
telescope therein and a stop within the tube against which the chaplet may bear
and by which it is adjusted, substantially as described.
151. In a molding machine the combination with the pattern mechanism of a
chaplet protector and adjuster consisting of a tube extending to and over the
chaplet, said tube carried by a casing on the pattern mechanism and adapted to
telescope therein and an adjustable stop within the tube against which the chaplet
may bear and by which it is adjusted, substantially as described.
152. In a molding machine the combination with the pattern mechanism of a
chaplet protector and adjuster consisting of a tube extending to and over the

page_text: chaplet, said tube carried by a casing on the pattern mechanism and adapted to
telescope therein a stop within the tube against which the chaplet may hear and
hy which it is adjusted and a catch adapted to engage the tube when in its
inner position substantially as described.
153. In a molding machine, the combination with a false flask, a bottom boardl
adapted to slide therein and a series of vent pins, of guide mechanism between
the false flask and bottom board for guiding the bottom board in its movement
within the false flask; said bottom board perforated to permit the vent pins to
pass through it substantially as described.
154. In a molding machine, the combination with the false flask and a series
of vent pins of a bottom board adapted to move in the false flask and projections
on one part adapted to enter recesses on the other part whereby the movement
between the two is guided, said bottom board provided with orifices, to permit
the vent pins to pass through it substantially as described.
155. In a molding machine the combination with the vertically movable flask
and pattern supporting mechanism and a false flask, of mechanism extending
from the vertically movable flask and pattern supporting mechanism adapted to
engage the false flask and lift it off the flask proper, substantially as described.
156. In a molding machine, the combination with the flask and pattern sup-
porting mechanism and the false flask, of rods extending up from the flask and
pattern supporting mechanism adapted to engage and lift the false flask at the
latter end of the movement of the flask and pattern supporting mechanism, sub-
stantially as described.
157. In a molding machine, the combination with two or more pattern sup-
porting parts movable with respect to each other of a pattern part provided with
a bearing portion for each of the said pattern supporting parts, substantially as
described.
158. The combination of a flask and chill, the inner face of the flask being
substantially smooth without recesses or angles and curved inward at the lower
edge, the adjoining face of the chill also being curved or beveled whereby a con-
tinuous face without angles or depression is formed to direct the sand laterally
when vertical pressure is applied and one or more ribs or webs extending inwardly
from the inner face of the flask and sharpened on their upper and lower edges,
substantially as described.
159. The combination with two or more movable pattern supports of a molding
pattern of unitary structure provided with two or more supporting or hearing
surfaces or members said members being out of vertical and out of horizontal
alignment with each other, substantially as described.
160. In a molding machine the combination with two or more pattern sup-
porting parts movable with respect to each other, of a pattern or pattern part of
unitary structure provided with a bearing member for each of said pattern sup-
porting parts, the bearing member between at least one of the supporting parts
and the pattern being adjustable, substantially as described.
161. The combination with two portions of a sand mold flask one portion pro-
vided with an arm or projection of a clamp for engaging them consisting of a
fitting having means for engaging said arm or projection, a second fitting having
means to engage the first and two outer or flask engaging fittings each connected
with one of the two first named fittings by adjustable means, substantially as
described.
162. The combination with two portions of a sand mold flask one portion pro-
vided with an arm or projection of a clamp for engaging them con-
sisting of a fitting having means for engaging said arm or projection.
a second fitting having means to engage the first and two outer or flask engaging
fittings each connected with one of the two first named fittings by right and left
hand screws, substantially as described.
163. The combination with two portions of sand mold flask one portion provided
with an arm or projection of a clamp for engaging them consisting of a fitting

page_text: having means for engaging said arm or projection, a second fitting having means
to engage the first and two outer or flask engaging fittings each connected with
one of the two first named fittings by adjustable means and an eccentric in the
engagement between the two first named fittings, substantially as described.
164. The combination with the cope portion, drag portion and the bottom board
of a sand mold flask of a clamp for binding the parts together consisting of a
fitting adapted to engage the bottom board of the flask, another fitting adapted
to engage the drag portion of the flask, a right and left hand screw connecting
the two first named fittings, a third fitting adapted to engage the cope portion
of the mold, eccentric surfaces on the second named fitting, a fourth fitting
adapted to engage said eccentric surfaces and a connecting screw between the third
named fitting and the four named fitting, substantially as described.
165. A clamp for a molder's flask consisting of two or more fittings adjustably
engaged together each adapted to bear upon and engage a part to be clamped and
a yielding cushion carried by at least one of the fitting and adapted to bear on
the clamped surface, substantially as described.
Dotad til dor of Santambor 1800
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: FIG. 135
FIG. 136.
FIG. 137.
FIG. 138.
G 39
C155
C168
C15
G 33
C157
-C152
G42
G40-
-C163
C154
Cis
G38
-G38