Improvements in Molding Machines.
Year: 1896

page_text: Date of Application, 21st Oct., 1896--Accepted, 19th Dec., 1896
Improvements in Molding Machines.
1, ORRIN BRYANT, of 921 Prospect Avenue, General Manager of The Bryant
Iron Works Co., of Buffalo, in Erie County and State of New York, United
States of America, 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 relates to that class or type of .molding machines in which sand is
used and a rotating table employed for carrying a series of flasks, each of which
pass through successively, the different operations required for preparing and
completing sand molds for casting, all of which operations are performed while the
flasks are being carried by the rotating table from the point they are deposited
thereon to the point where they are removed therefrom, all of which will be fully
and clearly hereinafter described and claimed, reference being had to the accom-
panying drawings, in which :-
Fig. 1, represents a plan view of the stationary table and frame-work on which
the movable table turns, showing a horizontal section on or about line a a, Fig. 7.
Fig. 2, represents an enlarged front elevation of one of the brackets for
supporting the curved bar and friction rollers upon which the frame carrying the
stamping mechanism moves in the arc of a circle back and forth.
Fig. 3, represents an enlarged vertical section through the lower portion of the
frame on or about line bb, Fig. 1.
Fig. 4, is a vertical section on or about line e c, Fig. 2, cutting through one of
the above mentioned brackets and one of the rollers and its supporting frame.
Fig. 5, represents an enlarged vertical section on or about line d d, Fig. 6.
Fig. 6, is a horizontal section on or about line e e, Fig. 9, showing a plan or top
view of the movable table with the flasks removed.
Fig. 7, is a vertical transverse section through the lower portion of the machine
on or about line ff, Fig. 6, the flask raising device being removed.
Fig. 8, represents a vertical transverse section through the machine on or about
line 9 g, Fig. 10, looking in the direction of the arrow V.
Fig. 9, is a vertical transverse section on or about line h h, Fig. 10, looking in
the direction of the arrow W.
Fig. 10, represents
top plan view of the complete machine, showing the
stamping or "ramming" mechanism at the limit of its swinging movement in
the direction of the arrow X.
Fig. 11, is a horizontal section on or about line ii, Fig. 9, showing a detached
plan view of the train of gearing below the section.
Fig. 12, represents a top plan view of the complete machine, showing the
stamping mechanism at the limit of its movement in the direction of the arrow Y.
Fig. 13, represents a transverse vertical section through the sand box and
platform upon which it moves on or about line j j, Fig. 15, the sand box being
shown in its rear position and the scraper in its upward position.
Fig. 14, represents a similar section showing the sand box about midway of its
movement across the platform and the scraper in its lowest position or in action.
Fig. 15, is a vertical longitudinal section through the sand box and platform .on
or about line kk, Fig. 14.
Fig. 16, represents a side elevation of the front portion of the stamping frame

page_text: and a portion of the mechanism carried by it, showing a vertical section through
the movable table on or about line 11, Fig. 12.
Fig. 17, represents a vertical section on or about line m m, Fig. 16, cutting
through one side of the stamping frame and its adjoining mechanism.
Fig. 18, represents a transverse section through the platform of the stamping
frame, showing also mechanism for raising the central portion.
Fig. 19, represents a top plan view of the horizontally swinging table, a portion
of the top mechanism being removed so as to expose a plan view of the mechanism
for operating the reciprocating sand- box, the vertically movable frame and the
pressing platen and its operating mechanism.
Fig. 19, represents a side elevation of the stamping frame and a portion of its
operating mechanism, showing a vertical section through the platform on or about
line n n, Fig. 10, the flask being omitted.
Fig. 20, is a detached side elevation of the tapering sand roller, showing also a
vertical section through line p p, Fig. 10..
Fig. 21, represents a detached elevation of the gearing for operating the
stampers, showing a section on or about line q q, Fig. 194, looking in the direction
of the arrow z.
Fig. 22, represents an enlarged detached vertical section on or about line rr,
Fig. 10, showing the stamping mechanism.
Fig. 23, is a vertical section on or about line ss, Fig. 24.
Fig. 24, is a horizontal section on or about line tt, Fig. 22.
Fig. 25, represents a detached perspective view of the adjusting segment, for
adjusting the stamping movement.
Fig. 26, is a detached perspective view of the guide bracket for one of the
stampers.
Fig. 27, is an enlarged detached perspective view of one-half of the central
portion of the stamping platform.
Fig. 28, is a detached front view of the rock arm that operates the shaft carrying
arms connected with the sand box for moving it.
Fig. 29, represents a side elevation of the same, showing also a longitudinal
section through a portion of cam ȧrm for operating it.
Fig. 30, is a detached vertical section on or about line, u u, Fig. 28.
Fig. 31, represents a detached horizontal section on or about line vv, Fig. 8,
showing a fragmentary plan view of the stamping frame brought to the position
shown by the arrow X, Fig. 10, showing also the rotating cam for operating it:
Fig. 32, represents a similar view of the stamping frame, showing it in the
position designated by the arrow Y, Fig. 12, showing also the position of the cam
for swinging it back into the position shown in Fig. 31.
Fig. 33, represents an enlarged detached vertical section on or about line wow,
Fig. 10, showing the butting portion of the stamping frame against the air cushion.
Fig. 34, is an enlarged side elevation of the flask lifting mechanism and its
adjoining parts, showing a flask in its lowest position on the table or in position
for use.
:
:
Fig. 35, represents a similar view, showing the flask raised in position ready to
be removed.
Fig. 36, is an enlarged longitudinal section on or about line xx, Fig. 10, showing
the flask in its elevated position, and also the flask raising mechanism.
Fig. 37, represents a transverse section on or about line y y, Fig. 34.
Fig. 38, is an enlarged central section through one of the rollers of the flask
raising device.
Fig. 39, represents an enlarged detached inverted view of the flask raising
mechanism.
Fig. 40, represents an enlarged top plan view of the stationary angular double
arm for supporting the lower end of the vertical driving shaft at one side of the
machine and the tapering roller for leveling the sand in the flask at or near the
other side of the machine, as will appear more clearly further on.

page_text: Fig. 41, represents an enlarged inverted plan view of the intermediate sand
condensing or ramming device.
Fig. 42, is a transverse section through a portion of the intermediate sand
condensing device on or about line z 3, Fig. 41.
Fig. 43, is a longitudinal section through the same on or about line 21 21,
Fig. 41.
Fig. 44, represents an inverted plan view, showing a slight modification of the
device.
Fig. 45, represents a front portion of the stamping frame, or horizontally
swinging frame, showing a side elevation of the device for holding the ramming
hammers up or out of action when not required for use.
Fig. 46, is a rear elevation of the same device, showing it separate from the
ramming hammers and their operating mechanism.
Fig. 47, is a front view of the hand lever, forming a part of the mechanism for
holding the ramming hammers out of action.
Fig. 48, represents a central section on or about line z 2 = 2, Fig. 47.
Fig. 49, represents a rear elevation of the conical leveling roller and its connecting
parts, showing a vertical cross section through the flask, sand mold, and stationary
and movable tables, showing also a rear end view of the device for scraping
off the sand that may remain on the flask after passing under the conical leveling
roller.
Fig. 50, represents an end elevation of the leveling roller and a similar view of
the scraping device.
Fig. 51, represents an enlarged cross section through the scraping device,
showing the position of the leveling roller and flask in dotted lines.
Fig. 52, represents a horizontal section on or about line z 3 23, Fig. 51, showing
a top plan view of the scraping device, conveyor, and other mechanism connected
with it.
Referring to the drawings in detail, and to the supporting frame of the
machine, reference is made to Figs. 1-6 and 7, also to the plan view of the
machine, Fig. 10.
The stationary base of the machine consists of an annular table 1, preferably of
cast iron (about twelve feet in diameter in a large size machine), and is supported
on a series of iron columns 2, see Fig. 7.
A series of radiating arms 3, connect this annular table with a central portion 4,
having secured to its underside by bolts, a depending hub 5, (shown in Fig. 7).
In the center of the table, and hub 5, is mounted and rigidly secured a vertical
shaft 6, which extends from the floor upon which the machine stands; up through
the center of the hub 5, see Figs. 8 and 9, where the whole of the vertical shaft 6,
is shown. The upper portion of the shaft 6, passes through the hub 7, of the
three horizontal frame pieces 8, 8ª and 8°, see Figs. 9-10 or 12, where the top
frame pieces are shown.
The outer ends of the horizontal frame pieces 8-8 and 8°, are secured to the
vertical bars 9, by screw nuts 10, said bars 9 having their lower ends rigidly
secured also by screw nuts to lugs 11, extending from the table 1, see Fig. 9.
On the top of the annular stationary table 1, is a double series of rollers 12,
mounted in supporting frames 13, so as to turn easily therein, see Figs. 4 and 7.
On the tops of these rollers 12, is mounted an annular rotatable horizontal
table 14, see Figs. 6 and 7, this table is also provided with arms, 15, that radiate
from the center, which arms are rigidly secured to the table by bolts, and near the
center of the table 14, to a horizontal spur gear wheel 16, by bolts 17. The hub 18
of the spur wheel 16, extends down below the center of the annular table 14, at the
inner ends of the arms 15, (see Figs. 7 and 8) and rests on a stationary two-part
collar 19, which is rigidly secured to the vertical shaft 6, by means of screw holts
in the usual way of clamping and rigidly securing such collars, thereby providing a
substantial and solid base upon which the hub 18, that supports and carries the

page_text: central portion of the rotatable table. 14, and the horizontal spur gear wheel
and other mechanism and supporting parts connected therewith, rests and rotates.
The vertical shaft 6, passes up through the spur gear wheel hub 18, so that the
center of the table 14, turns on said shaft while the central portion connected with
the table rests and is supported on the stationary hub.
The gearing for operating the annular table 14, consists of a pinion 20, adapted
to gear in with the teeth in the horizontal gear wheel 16, see Fig. 6.
The pinion 20, is rigidly secured to a vertical shaft 21, (see Figs. 6-8 and 9,)
mounted at its lower end in a box 22, on an arm 23, rigidly secured to the vertical
shaft 6. The arm 23, is part of a double arm consisting of the two parts 23
and 23ª, clamped to the shaft 6, and rigidly secured by bolts 23°, see Fig. 40.
The upper portion of the shaft 21, is mounted in a box 24, on one of the top
frame bars, 8°, above box 24, is a collar 25, rigidly secured to the shaft 21, by a set
screw, and below the box 24, is mounted and rigidly secured on the same shaft, 21,
a horizontal bevel gear wheel 26, (see Figs. 8-9-10 and 12).
On one side of the frame bar, 8, extending horizontally in an angular direction,
see Figs. 10 and 12, is a short frame portion 27, either rigidly secured to the frame
bar 8, or forming a portion of it. Secured to the underside of the frame bar 8º, in
the usual way by bolts, is a box 28, set diagonally thereon, in which is mounted a
-horizontal driving shaft 29, having its opposite end mounted in a box 30, see Fig. 9,
where the box is shown, see also Figs. 10 and 12, in which the shaft 29, is
shown.
At the outer end of the shaft 29, is rigidly secured the driving pulley 31, and
along side of the driving pulley is the usual loose pulley 32.
Pivoted to a small supporting frame 33, is the usual shifting bar 34, for shifting
the driving belt from one pulley to the other, see Figs. 9, 10 and 12.
The mechanism for raising and lowering the flask on the movable table as it
rotates is represented in Figs. 8 and 9, where it is shown in position in the
machine.
For the construction and operation of this portion of the machine, reference is
had to Figs. 1-34-35-36-37-38 and 39, all on Sheets 1 and 11.
On the top of the stationary annular table 1, is rigidly secured a raised rib 35º,
having an inclined end. 35° and a vertical end 35%, which causes the operation of the
device while being carried over it by the rotating table to which it is attached, as
will more clearly appear further on.
To the underside of the movable annular table 14, is rigidly secured by bolts a
stationary depending frame consisting of the side portions 35-35, secured by
bolts 36, see Figs. 35 and 37.
At each opposite end 37, of the frame pieces 35 and 35", is mounted a roller 38,
adapted to turn easily therein.
A vertically movable frame is located between the two stationary side frames 35
and 35°, and consists of a flat horizontal portion or table 39, having on its under-
side, two downward extending side portions 40, in which is mounted so as to turn
easily in their bearings, two rollers 41, each being parallel with the rollers 38 and
located above them.
On the top portion 39, is rigidly secured a series of vertical pins 42, which extend
up through the annular table 14, and the plate 14°, upon which the pattern 14°, is
secured, and thereby (when in their upward position) lift the flask 14', above and
off from the pattern substantially as shown in Fig. 35.
Located between the two sets of rollers 38 and 41, is a horizontally movable
portion 43, having wedge shaped portions 44 and 44°, which move longitudinally
between the two pairs of rollers 38 and 41, see Fig. 36, and thereby raise or lower the
plate 39, and its pins 42. Rigidly secured to and extending down from the under-
side of the annular table 14, are two ears 45, between which is pivoted a depending
slotted arm 46.
This arm 46, extends down through a longitudinal opening in the horizontally

page_text: movable wedge-bar 43, and between two downward extending ears 47, either
rigidly attached to or forming a part of the wedge-bar 43, a pin 48, passes through
the ears 47, and through the slot 49, in the swinging arm 46. It will now be seen
that if the arm 46, be made to swing on its pivot back and forth it will cause the
wedge-bar 43, to move longitudinally back and forth and that as it does so, the
wedges 44 and 44", will while moving in the direction of the arrow 44°, force
the upper rollers 41-and the vertically movable table 39, to which it is connected,
upward, and an opposite longitudinal movement of the wedges 44 and 44", will
allow said table to move downward. This horizontal movement of the wedges is
produced while the table 14, is rotating.
As the table 14, carries the device around, the flask, the pins 42, and the
vertically movable table 39, are in their lower position until the lower end of the
slotted arm 46, comes in contact with the end 35%, of the rib 35b, see Fig. 34, where
it is shown just approaching the end 35ª.
When the arm 46, is turned in the position shown in Fig. 36, so that it moves on
top of said rib, the wedge-bar 43, is in its forward position and the flask lifted
upward.
This operation raises the table 39, and the flask as above mentioned, into the
position shown in Figs. 35 and 36. As the table continues its movement the end
of the arm 46, passes along over the rib 35, and when it comes to the incline 35°,
the arm 46, drops to its normal position and the weight of the flask on the pins 42,
and the weight of the table 39 and its rollers 41, resting on wedges having their
lower sides resting on the rollers 38, cause said wedges to move back or in an
opposite direction to the arrow 45, thereby allowing the pins 42, and table to move
downward to their normal position, shown in Fig. 34.
To prevent noise or too great a concussion 1 employ an air cushion 36ª, against
the piston rod of which the end r, of the wedge bar 43, strikes when moving in
that direction.
There is one of these flask raising devices for every flask the table is capable
of supporting. I have shown six flasks on the table in Fig. 10, as a suitable
number. The raised rib 35, shown in Figs. 1-34-35 and 36, is located at the
point where the flask is to be taken off from the table, consequently the flask raising
and lowering device is only operated once every time the annular table makes a
revolution.
A horizontally swinging frame carries the ramming hammers, the sand receiving
and depositing mechanism and other operating parts, and consists of two upper sub-
stantially horizontal and parallel side frame bars 47 and 47, see Figs. 8-9-10-12
and 19-194.
These frame bars are securely bolted at their rear ends to a cross bar 48, having
a central hub 49, shown in Figs. 8-9 and 21. The hub 49, is bored out centrally
to fit the vertical shaft 6, down over which it is passed until it rests on top of a
ball bearing collar 50, see Fig. 21.
The ball bearing collar 50, is made in the usual way and rests on a collar 51,
made in two parts and rigidly secured to the shaft 6, by screw bolts 52, shown in
Figs. 8-9 and 21. To the front of the side bars 47-47, is secured by screw
bolts 53, see Fig. 194, the vertical side frame pieces 54 and 54°, and extending from
the top of one side frame piece to the other is a cross-bar 55, see Figs. 8-9-10-12
and 22, rigidly secured by screw bolts 53, shown in Fig. 194.
At the bottom of the side frame pieces 54 and 54°, is securely fastened thereto
by means of the braces 56, and bolts 56, two base plates 57 and 57°, and between
them is secured a sand receptacle. On the inner side of the front hase plate 57, is
a curved rib 59, preferably formed in one piece with it.
Supported on three of the lugs 11, is a correspondingly curved bar 60, see Fig. 6,
where this curved bar is shown, it is located immediately below the curved rib 59.
This curved bar 60, is also further supported by two supporting brackets 61, see
Figs. 2-4 and 6.

page_text: On the top of the curved bar 60, is mounted in supporting frames 62, a series of
rollers 63, shown in Figs. 6-8-9-10-12-16 and 194, on these rollers 63, the
curved rib 59, rides and supports the front of the horizontally swinging table.
At the rear of the horizontally swinging table is rigidly secured a bar 64,
extending diagonally rearward and provided with a pivoted friction roller 65, at the
end, see Fig. 10, also the detached Figs. 19-31 and 32.
To make the bar more rigid and secure in its position a diagonal brace 66, is
secured to the bar 64, by a bolt 64°, and its opposite end is secured to the top
side bar 47. This diagonal brace 66, is provided with a horizontal slot 67, see
Figs. 8 and 9, where a section through this brace is shown, its object will appear
further on.
On the vertical shaft 21, is rigidly secured by a key 68, a tappet 69, the end
of which as the shaft. 21, turns passes through the horizontal opening 67, in the
brace 66.
During a portion of each rotation of the shaft 21, (which turns in the direction of
the arrow t,) the tappet 69, comes in contact with the friction roller 65, and moves
the swinging table in the direction of the arrow X, Fig. 10, which turns on the
main vertical shaft 6, as herein before stated.
At the instant the end of the tappet 69, passes by the friction roller 65, the
portion 70, on the side of the swinging frame, comes in contact with the piston
rod 71, of an air cushion 72, see Fig. 10, and allows the frame to come easily to
the limit of its horizontal swinging movement in that direction. For a detail
drawing of the air cushion 72, see Fig. 33, on Sheet 10, in which 73, represents
the piston; 71, the forward piston rod, and 74, the rear piston-rod which passes
into a reduced portion 72, against a spiral spring 75. The object of the spiral
spring 75, is to insure the return movement of the piston until it touches a stop 76,
if the condensed air within the cushion cylinder should not be sufficient for that
purpose.
The movement back or the reverse movement of the swinging frame is as
follows:-
The rotating table, see Figs. 6-7 and 12, which moves in the direction of the
arrow A, is provided with a series of brackets 77, rigidly secured in place by
bolts 77, the front faces of these brackets are flat and extend vertically upward,
and they correspond in number with the number of the plates upon which the
patterns are secured, in this instance, I have shown six substantially as represented
in Fig. 6, but the number of these plates may be varied, the other parts of the
machine being made to correspond.
To the side frame pieces 54, see Figs. 16 and 17, is a vertically movable bar 78,
fitted in slideways 784 and 78, so as to keep it in alinement.
Near the top of the bar 78, is a side extending cam portion 79, see Fig. 16, and
on the end of a shaft 80, mounted in boxes on the frame of the horizontally
swinging table is rigidly secured a cam 81, which gives the bar 78, its. required
upward and downward movements.
The bar 78, is provided with two ears 82, between which is pivoted a swinging
bar 83, (see Figs. 16 and 17) having an air cushion 84, for preventing it from being
forced too quickly inward, the bar 83, is also secured by a bolt 83%, which limits its
.movement outward.
It is also provided with a spiral spring 85, to keep its lower end outward
.slightly away from the side of the machine with a yielding force, when free to
act, and for the further purpose of acting as a cushion, substantially as shown in
Fig. 17.
The operation of this portion of the device is as follows:-
The rotating table 14, it will be noticed, moves in the direction of the arrow A,
see Fig. 6, consequently the brackets 77, are moving the same way and in the
direction required for this movement of the horizontally swinging table.
By reference to Fig. 16, it will be seen that the cam 81, has turned around
sufficiently to allow the bars 78 and 83, to drop downward, and by reference to

page_text: Fig. 17, it will be noticed that the lower end 86, of the swinging bar 83, is in
contact with the face of one of the brackets 77, and as long as this contact is kept
up, the rotating table 14, and the horizontally swinging table will move together,
but the movement of the rotating cam 81, is so timed that just before the hori-
zontally swinging table has reached the limit of its movement in this direction (in
the direction of the arrow Y,) the said cam, 81, has advanced far enough to lift the
bar 83, out of engagement with the bracket 77, thereby leaving the horizontally
swinging table in motion by its inertia until stopped by the air cushion 87, which
is similar in construction to the air cushion for easing and stopping its opposite.
movement.
The horizontally swinging frame having completed its movement in the direction
of the arrow Y, the tappet 69, again comes into action and the reverse movement
of the horizontally swinging frame is repeated as herein before described, the cam 81,
having again advanced to a position which allows the bar 83, to move downward
and engage with another bracket 77.
The box for supplying sand to the flask, or the reciprocating sand box, is repre-
sented in Figs. 7-8-10-12-13-14-15-19 and 27. I will refer to Figs. 7—
8-10-13-19 and 27.
It consists of a rectangular box or frame 88, see Fig. 10, the rear inner side 88,
being substantially vertical and the opposite inner side 88, being on an incline of
about 45 degrees more or less, see Figs. 13 and 14.
This reciprocating sand box is adapted to move across the table 57, back and
forth and over the vertically movable sand receptacle 89. At oue end of the
reciprocating sand box is pivoted an arm 90°, see Figs. 10-12 and 16, also.
Figs. 13-14 and 19, having their opposite ends pivoted to two arms 91-91º,
mounted on and rigidly secured to a shaft 92, (see Figs. 10-12 and 16,) which is
mounted in boxes on.the frame pieces 92ª.
At or near the center of the shaft 92, is rigidly secured an upward extending
arm (see Figs. 10-12 and 30,) consisting of two parts 93 and 93, see Fig. 30.
The part 93, being swiveled to the part 93, by a flanged bolt 94, secured to
the part 93, by a set screw 94°, the flanged portion or head 94°, holding the part 93ª,
firmly in place to the portion 93, while allowing it to turn thereon.
A spiral spring 95, is fitted to move easily in the socket 931, and within the
spring 95, is a bolt 95°, kept from going in too far by a transverse pin 95. The
socket 93 is located centrally between the projecting portious 93 and 93, which
extend outward in the line of movement in opposite directions and the bolt 95*,
extends upward above the top of the arm 93°, and extends into a hole in the arm 96.
A portion of the arm 96, is represented in Figs. 28-29 and 30, and in Figs. 8-
9-10 and 12, the entire arm is shown.
It is provided with a slot 97, through which a reduced top portion of the
shaft 21, passes; see Figs. 8 and 10. At the end, opposite the end engaged by
the arm 93, is a pivoted friction roller 98, pivoted by a pin or bolt to its underside,
which roller 98, fits and operates in a horizontal grooved cam 99, rigidly secured to
the vertical shaft 21, so as to be rotated by it.
It will now be seen that the reciprocating sand box receives its proper backward
and forward movements by the action of the horizontal grooved cam 99, which, in
connection with the slotted arm 96, transmits motion to the arm 93-93, from
thence to the shaft 92-arms 91-91ª and arms 90-90%, connected with the
reciprocating sand box, and thereby carry the sand and drop it into the flask 14',
as will more clearly appear further on.
The pin 95, extends out through a slot 14, see. Fig. 29, at the base of the arm 93,.
is a bearing 1, located on the hub of the arm 93, shown in Fig. 28, and on the
sbaft 92, is another bearing. 1', see Figs. 10 and 12.
.
.
In these bearings is mounted a shaft 16, (see Figs. 12-28-29 and 30,) having
a hand lever 1, shown in Figs. 12 and 16. On the shaft 15, is rigidly secured an
arm 1', having a chain 1', connected to its. dutér end, the opposite end of the
chain, 1', being connected to the pin 95%, see Figs. 28 and 29...
t

page_text: When it becomes necessary for any reason, to prevent or stop the operation of
the reciprocating sand box while the rest of the machinery is working, all that is
required to be done is to move the arm 1b, shown in Fig. 16, to one side sufficiently
to draw the bolt 95, down out of the hole in the horizontal arm 96, shown
in Figs. 8-9-10-12 and a portion of it in Figs. 28-29 and 30.
This operation will allow the arm 93-93 to remain stationary while the
horizontal arm 96, is in operation and consequently the reciprocating sand box
remains stationary.
If the sand should be dropped directly into the flask from the reciprocating sand
box so as to fill it with the loose sand, the flask would not be nearly or completely
filled when the sand was condensed by the ramming mechanism.
To avoid this difficulty I employ an automatically, vertically movable rectangular
frame, that raises sufficiently to allow the flask to pass under it without.obstruction
.and then moves downward and rests upon the top of the flask while the charge of
sand is being put in, also while the ramming and condensing mechanism is in
operation, and then after all this work has been done and the sand has been
condensed properly as it should be upon the pattern and so as to project a little
above the top of the flask, this rectangular frame is automatically moved upward
sufficiently to allow the flask with its packed sand and pattern to pass under without
touching it. Its construction is as follows:-
The rectangular frame 89, is located between the bed plates 57-57, so as to fit
closely and move or slide up or down between then, see Fig. 18, where this frame
and the base plates or tables are shown in cross section, see also Figs. 13-14
and 19. At each end of the rectangular frame 89, is an upward extending end
frame piece 1, see Fig. 27, where a portion of this rectangular frame is shown and
one of the end frames 1. The frame portions 1, being located at each end
of the frame 89, are within the side frame pieces 54-54, of the horizontally
swinging table.
At the rear of each side frame piece is secured by bolts a box 1 L, (see Figs. 8-
9-16 and 19,) in which is mounted a shaft 1.
On the shaft 1, is rigidly secured two arms 1ª and 1, see Figs. 8 and 9,
also Figs. 10-16 and 18. The opposite ends of the arms 1° and 1', are pivoted to
the top of the end frame pieces 1, and to an extension from the rear end of the
arm 1' is secured by bolts a long arm 1°, having a hook shaped portion 1', at the end.
The weight of the rectangular frame 89, and its connections keep the end or the
portion 1, up against a cam 1, which is rigidly mounted on a shaft 1, see
Figs. 18-19 also Figs. 8-10 and 12.
From the above construction it will be seen that as the shaft 1, rotates its
cam 1, will give the arm 1', an up and down swinging motion, and consequently,
the rectangular frame 89, will receive a similar up and down movement, but to a
much less degree. In Fig. 18, the frame 89, is shown at the limit of its movement
downward, and in Figs. 13,-14 and 15, at the limit of its upward movement.
The movements of the cam 1", are so timed that the frame 89, rises in time for
the flask to pass under it, and moves down so as to rest on the top of the top of the
flask as the sand box advances to drop the sand into it, it then rises up as the
swinging table is completing its movement in the direction of the table 14.
The reciprocating sand box, is made of larger or smaller capacity by means of
removable pieces of wood 1", see Figs. 13 and 14, at the side, which may be made
larger or smaller, and also at the ends by the removable blocks or pieces of
wood 1, see Fig. 15, which can also be of any required size, according to the
capacity of the flask, or the pattern used to mold from.
After the sand has thus been deposited in the flask, the reciprocating sand box
in its forward or return movement draws a vertically movable scraper or plate 1*,
(which is fitted in vertical slideways at each end of the reciprocating sand box 80
as to drop downward by its own gravity) over two curved wooden portions 2ª,
located transversely at each end of the vertically movable frame 89, which causes
the plate 1, to rise, and fall in accordance with the shape of the portions 2",

page_text: the snape or which may be varied to suit various conditions required for this
purpose.
The plate 1, in being thus drawn over scrapes off the surplus saud and thereby
leaves the sand deeper at the front and rear sides than in the center of the flask.
The construction shown answers a good purpose for one kind of pattern, a radiator
section for instance.
The portion 2, being removable and preferably made of wood can easily be
changed in shape or one kind can be removed and new ones of a different shape
inserted in lieu thereof, when & pattern of a different shape calls for it.
This scraping device is an important feature in a molding machine because it is
one of the requirements that cannot be dispensed with in successful practice, that is,
the sand in a mold must be packed harder in some parts of a flask than in others,
especially at opposite sides of the flask, but different shapes of patterns require
different treatment in this respect and that is the reason why I make the parts 2,
of wood or of some equivalent material the shape of which can be easily changed.
when required, or they can be removed and new ones of a different shape can be
inserted in their place as herein before mentioned.
After the reciprocating sand box has deposited a measured charge of sand in the
flask and has moved forward and scraped off the sand as above mentioned.
I employ an intermediate pressing or condensing device consisting of a pressing
platen. In referring to this portion of the mechanism reference is had to Figs. 18-
19-19 and 21, in which enlarged views of the device showing its upward and
lower positions and its operating parts are shown.
Below the table 57°, near each end. is a box portion 2, in which is mounted a
shaft 3', having two angular arms 2° and 2ª, rigidly secured thereto, see Figs. 18-
19 and 194.
At the rear end of each of the arms 2° and 2d, is a counterweight 2°, adjustably
secured by a set screw 3°. The upper portions of the arms 2 and 2d, are of
an angular form inclining upward to the top 2, the object of which will be
explained further on. At the front ends of these arms is rigidly secured by bolts
a platen 28.
The construction of the platen 2, will be better understood by reference
to Fige. 41-42 and 43. It is preferably constructed of an iron plate, having a
series of transverse ribs 2', either formed in one integral piece with it or made
separate and secured to it by bolts or screws in any well known way.
On the ribs is secured a heavy woven iron plate 2, made sufficiently strong and
heavy for the purpose, substantially as shown in Figs. 41-42 and 43, or a plate
of heavy perforated iron may be used, substantially as shown in Fig. 44. The
ribs 2', leave openings for the air passing through the perforated plate to escape
freely at each side of the platen.
Around the perforated plate is a downward projecting frame 21; the office of
this frame is not only to add strength to the device but to leave a depression 2*,
extending from the lower surface of the frame to the perforated or woven surface.
The object of the depression is to leave a slightly raised portion of sand above
the top of the flask after the pressing platen has done its work before the flask
passes under the smoothing or leveling roller, all of which will appear in the
description of the operation of the machine.
When packing sand in a molding flask by a sudden quick pressure or blow, it
has been found that the sand cannot be properly packed around the pattern so
that a good casting may be produced therefrom, unless some means is provided
for the free escape of the air in the loose sand. The object of the perforated
platen is to do this and I have found it impossible in my experience; to make a
perfect sand mold with sufficient rapidity without means for thus allowing the
air to escape, consequently it is a very important element in this kind of
machine.
The counterweights, 2°, are designed to be sufficient to raise the platen 26, after
being released from the mechanisin that moves it downward.

page_text: At the top of the platen is placed a layer of heavy felt 2 L, rubber or other
equivalent elastic material, felt preferred. The object of this is to present a
comparatively soft and yielding surface for the ramming hammers to strike upon.
It acts as a protection to the platen and produces a more suitable condensing
action upon the sand in the flask.
The operation of this pressing platen is produced by a roller 2, pivoted between
the arms 91 and 91°.
This roller as the sand box is moved forward out of the way moves forward
over the upward inclined portions of the arms 2 and 2d, and when they reach the
points 2', as in Fig. 16, the platen has moved down to its lowest point and given
its part of the ramming pressure on the sand in the flask. When the arms 91
and 91, move back again, the platen is raised up by the counterweights 2°, to the
position shown in Fig. 18.
At the moment the perforated plates reaches the limit of its downward
movement the ramming hammers drop and strike a heavy blow on the felt top of
the platen.
In describing the construction and operation of the ramming hammers reference
is had to Figs. 8-12-22 and 24.
Near the top of the horizontally swinging frame is mounted in suitable bearings
a shaft 80, having one end provided with a bevel gear wheel 2P, rigidly secured to
it and located on the outside of the frame, see Figs. 12-19 and 19ª.
To the side of the frame is secured by bolts two supporting brackets 29-2",
carrying bearing boxes in which is mounted a shaft 2", extending lengthwise of
the frame and provided with a bevel gear wheel 2*, adapted to gear in with the
wheel 2P.
At the opposite end of the shaft 2", is another bevel gear wheel, 2", adapted to
engage with a bevel gear wheel 2, rigidly secured at the end of the shaft 1, from
which the shaft 2, receives its motion, and which it transmits through the bevel
gear wheels 2P and 2, to the shaft 80.
The shaft 2, it will be noticed, is arranged on an incline from the horizontal,
that is, it inclines from its box 29, downward to its box 2', see Fig. 19.
On the shaft 80, is mounted so as to turn loosely thereon a series of gear
wheels 2", see Figs. 22-23-24, also Figs. 7 and 8, and between each gear
wheel 2", is a collar 2. These collars are all rigidly secured to the shaft by a
key 2, or other well known means see Figs. 22 and 23, so that the wheels 2", turn
loosely on the shaft 80, between the collars 2. Each collar 2, is provided with a
tooth 2, rigidly secured to it.
On the cross-bar 55, is a series of socket pieces 3ª, corresponding in number
with the gear wheels 2". Each socket piece is provided with a downward
extending tubular portion 3b, see Fig. 22, which tubular portion is fitted in holes
in the cross-bar, 55, and each secured by a nut 3°, (shown in Fig. 22).
In the tubular portions 3b, is a series of hammer bars 34, each having gear
teeth 36, on one side adapted to gear in with the teeth in the gear wheels 2 W, see
Figs. 22 and 24.
Back of each hammer bar 3d, is a guide bracket 3', rigidly secured to the underside
of the cross-bar 55, by a screw bolt 55', see Fig. 26, where the guide bracket 3, is
shown in perspective, the object of which is to keep the hammer bars 34, in
alignment and in gear with the wheels 2", and to provide a suitable slidewayifor
them to move in, see Figs. 22 and 24.
At the lower end of each hammer bar is secured by a set screw 3³, or other
equivalent means, a ramming hammer 3*, see Fig. 22.
On the side of each gear wheel, 2, (see Fig. 22) is pivoted by a screw-pin 3 L,
Bee Eige. 22 and 24, a pawl 3, having a rear extension 3. 3 represents a spring,
which when free to act, keeps the hooked end 3%, down over the tooth 23, on the
collars 2, thereby holding the wheels to the collars until released as will appear
further: on.

page_text: On each collar 2; is mounted an arm:3; having a curved portion provided with
a curved slot 3, see Figs. 22 and 24, also Fig. 25, where a detached perspective
view of the arm 3 is shown. The arm 3, is also provided with an inward
extending pin 3, see Fig. 24, where this pin is shown, and Fig: 22, where its
position is shown by dotted lines..
These arms 3, turn loosely on the shaft 80, and are secured to the brackets 3',
by a screw 3, which passes through the slot 3, (Figs. 23 and 24).
The operation of this portion of the machine is as follows:-
The shaft 80, and the series of wheels 2", turn in the direction of the arrow on
the wheel 2, shown in Fig. 22, and thereby lift the bars 38, upward until the rear
extension piece 3º, on the pawl 3, passes under the pin 3, when the hook end 3%,
of the pawl is lifted up off from the tooth 2; thereby releasing the wheel 2", so that
the hars 38 and ramming hammers instantly drop and strike a blow on the felt top
of the pressing platen 28, and as the hammers all drop together or substantially
so, a heavy blow is given, sufficient to properly condense the sand around the
pattern in the flask.
It will be noticed that the arm 3', being provided with the curved slot 3, is
adjustable, so that by loosening the set screw 3 V, it may be turned around on the
shaft so as to lift the pin 3, up or down and when the proper adjustment is made
the set screw 3 V, may be tightened. It will now be seen that the higher the pin 3*,
is secured upward the longer the hammer bars 38; and the gear wheels 2", will be
locked together because the extension end 3", of the pawl has further to go before
it strikes the pin 3, to release the hammers, consequently the hammer bars 35,
drop from a greater height than. they would if the arm 3, was adjusted in the
opposite direction or downward.
At the top of each hammer bar 38, is rigidly secured a disk 3", by a nut 3*.
The object of this disk is to form a piston which falls into the sockets 3ª, when
the bammers drop, and thereby act as an air cushion when required, a stop cock 3,
may be used to adjust the force of the air cushion or relieve it entirely when
necessary.
Sometimes it becomes necessary to stop the action of the ramming hammers,
while the other parts of the machine are in operation. For this purpose a
shaft 5", is mounted in boxes 5 at the top of the horizontally swinging frame,
see Figs. 45 and 46, so as to turn easily therein. On the shaft 5ª, is rigidly
secured two upward extending arms 5° and 50, (see Fig. 46) connected by a cross-
bar 5º.
On the outside of the swinging frame is loosely mounted an arm 5', it has an
easy movement on the shaft 5, but limited by means of a pin 5%, rigidly secured
to the shaft 5, and extending through a slot 5b, in the hub 5'; of the arm 5',
see Figs. 47 and 48, so it can be moved either way as far as the slot 5, will allow.
The upper portion of the arm 5', is provided with a weight 5', to hold it when
turned either way.
At the foot of the arms 5° and 5ª, is a forward and back extension 5 and 5 L,
the object of which is to limit the arms 5° and 54, in either their forward or back
movements, both movements of which are shown in Fig. 45.
From the above description it will be seen, that when it becomes necessary, for
any reason, to stop the action of the ramming hammers all that is required to be
done is to turn the arm 5', so as to bring the cross bar 5°, under the disks 3", at the
top of hammer bars 3d as shown in Fig. 45, and thereby hold them in their upward
position, thus preventing their operation.
When it is desired to bring them into operation again the arms 5', is turned so
as to bring the cross-bar 5°, to the position shown by the dotted lines 5m, and the
weight 5', to the position shown by the dotted lines 5º, the weight moving further
than the cross-bar because of the slot 5, as will be understood.
After the flask has passed the pressing and ramming mechanism it passes under
the smoothing or leveling roller, for the purpose of further condensing and

page_text: .
leveling the back of the mold. In describing this amoothing roller, reference is
had to Figs. 8 and 10, where it is shown in its position on the machine and for
details of its construction reference is had to Figs. 20 and 49.
The smoothing roller 4, is made in the form of a frustum of a cone, it is
constructed hollow and preferably of wood so as to be as light as possible consistent
with the necessary strength, and is provided with a spider 4, preferably of cast
iron, or its equivalent at each end, the spider in the larger end is shown in
Fig. 50.
It is mounted on a shaft 4, which is keyed or otherwise rigidly secured within
said spiders. The outer end of said shaft is mounted in a box 4, on one of the
vertical supporting bars 9, (see Figs. 10-12-20 and 49,) and the opposite end
of the shaft 4°, is mounted in a box 4º, on the end of the arm 23, shown in
Figs. 8-20 and 49. A plan view of the arm 23, to which the box 4", is attached
is shown in Fig. 40.
This roller is suspended in its bearings so as to turn loosely therein and allow
the flask to pass under it.
After the flask has passed under the smoothing roller and been leveled it has
been found, that, from the springing of some of the parts or for some other reason,
the sand still projects up above the top of the flask from a sixty-fourth or thirty-
second of an inch, so that when the two parts of the mold are put together the
clamping device when forcing them together will cause the sand to be forced in
that much each way, thereby contracting the mold and the size of the casting
made therein, and sometimes injuring the mold. This becomes a serious objection
when molding articles that are required to be made in large numbers and all of
nearly the same weight as possible, or with hollow articles in which a core is used
and they are required to be cast as thin as possible and of an even thickness
throughout.
To meet this objection I employ a scraper 4', for scraping off the surplus sand
from the back of the flask as it passes from under the roller 4º, reference being
had to Figs. 49-50-51 and 52, for the details of the construction and operation
of the scraper. It consists of a thin sheet metal scraping portion 4', rigidly secured
at its ends between and to the two curved arms 46 and 4, by screws or bolts, or in
any well known way.
The opposite ends of the arms 48 and 42, are дuounted on the shaft 4°, so as to
swing easily thereon and thereby raise or lower the scraper 4.
At the back of the scraper, 4, is a substantially vertical supporting rod 4', the
lower end of which hooks into a hole in the back of the scraper and the upper end
extends up through a bracket 4, ou one of the top radiating arms, 8, (see Figs. 10
and 12, also 49 and 50,) and is secured by a screw portion and nut 4 and 4 L, by
which the supporting rod (4) is made adjustable so as to raise or lower the scraper
and then rigidly secure it.
Above the scraper is two arms 4" and 4", rigidly secured to the arms 4% and 4",
and mounted in bearings in said arms is a shaft 4, carrying a conveyer 4%, for
taking off the loose sand that may gather on the top of the scraper.
This conveyer is run by a belt 4, (see Fig. 52). The belt 4', may be connected
with a pulley located at any suitable point on the machine or it can be connected
with a pulley running on the main line of shafting near the ceiling in the building
in which the machine is located, the belt runs in the direction of the arrow i, Fig. 52,
so as to carry the sand forward over the side of the machine.
On the conveyer shaft 4P, is mounted two arms 4 and 4', the outer ends of which
carry in suitable bearings, a roller 4", mounted so that its center will be a little
forward of the edge of the scraper. The object of this roller 4", is to hold the
sand on the scraper as it gathers thereon so that it may be more readily taken by
the conveyer and carried off from the flask and machine.
The shaft 80, which carries the gear wheels 2", for operating the hammers, also
the cam 81, for operating the vertically movable bar 83, for engaging with a
bracket 77, on the table 14, when moving the horizontally swinging table, receives

page_text: its rotary movements from the driving shaft 29-by means of the bevel gear
wheel 2, on the shaft 2. The shaft 2, receives its movements by means of the
bevel gear wheels 2" and 2, and the shaft 1', which carries the bevel gear wheel 2,
receives its movement by means of the bevel gear wheels 7 and 7, see Figs. 19.
and 194, (see also Figs. 8 and 9,) and the gear wheel 7° receives its movements by
means of a horizontal spur wheel 7, which is rigidly secured to it, and both turn
on the vertical shaft 6, and an intermediate gear wheel 74, which is mounted on a
vertical stud on an arm 7 rigidly secured to the vertical shaft 6, and engages with
the gear wheel 7 and a horizontal spur gear wheel 7, rigidly secured to the
vertical shaft 21, see Figs. 9 and 11, from which all the above movements are
obtained. The horizontal bevel wheel 7b, and spur wheel 7°, being adapted to
turn on the vertical shaft 6, rest and are supported on the hub of the arm 7°,
see Fig. 194.
The operation of the machine is as follows:-
Motion being transmitted by means of a driving pulley 31, to the driving shaft 29,.
and its bevel gear wheel, and from thence to a horizontal bevel gear wheel 26 ;
imparts to the vertical shaft 21, and its spur pinion 20, (see Figs. 8 and 9,) a rotary
motion in the direction of the arrow e, shown in Fig. 6, and the pinion 20, being
in gear with the horizontal spur gear wheel 16, which is rigidly secured to the
table 14, gives said table a rotary movement in the direction of the arrow A,
shown in Figs. 6-10 and 12..
The table 14, being now in continuous motion as above described and being
provided with a series of patterns 14°, (or other pattern) one pattern being firmly
secured to each table 14", the operator places a flask 14, ou the tables 14, at the
point S, as fast as they come opposite said point, see Figs. 10 and 12, said flask is
carried along with the moving table 14, (which is in continuous motion as above
set forth) and passes under the horizontally swinging frame or table, which is now
in the position shown in Fig. 10.
When said flask (the one put in place at the point S) is immediately under the
swinging table, or nearly so, (the vertically movable frame 89, having moved up.
to allow it to pass as heretofore mentioned,) the vertical bracket 77, which was at
or about the point T, when said flask was put in position, will now be nearly to the
side of the horizontally swinging table, but before it reaches that point, the cam 81,
see Figs. 16 and 17, has been turned around with its shaft 80, so as to allow the
lower end of the bar 83, to drop down directly in the pathway of the said bracket,.
which engages, as it moves forward with the lower end of the said bar 83, at the
point 86, as shown in Fig. 17, thereby carrying the swinging table with it, and
during the time, the two; the table 14, and the horizontally swinging table are thus
in engagement and both move together, the sand receptacle 88-88° moves and
deposits its sand into the flask and then moves back out of the way.
The pressing platen then moves down and presses the sand into the flask around
the pattern, the mechanism for operating the hammers release them so that they
drop and strike the required condensing blow upon the platen all as herein before
described.
The instant all of the above named operations have been performed, the cam 81,
lifts the bar 83, and releases the swinging table from the bracket 77, and table 14,
and its horizontally swinging movement in that direction is stopped by the air
cusbion 87.
The tappet 69, is now in position and reverses the action of the swinging table
as hereinbefore described, and the same operation is being repeated with another
flask while the said flask (which has been continuously moving with the table 14,)
passes under the smoothing roller and the scraper, and is then removed at or about
the point R, see Figs. 10 and 12.
The above operations are continuous, while one flask is being put on to the table
the one preceding it is operated upon under the horizontally swinging table and
when it leaves said swinging table another flask takes its place.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what i
claim is
1. In a molding machine, the combination of a continuously rotatable table
mounted on rollers on a supporting base and having a series of brackets located on
its horizontal face near the periphery at equal distances apart or substantially so,
each bracket having a vertical portion facing the direction of movement, with a
horizontally swinging frame mounted on suitable supports on the machine so as to
swing thereon and carrying the sand feeding and ramming mechanism, a vertically
movable bar mounted in guideways on one side of said frame, a cam secured to a
shaft mounted in boxes on said swinging frame for engaging with and allowing the
vertically movable bar to move downward and engage with one of said brackets so
that the movement of the swinging frame co-incides with that of the horizontal
rotating table, and then lifting said bar when the horizontally swinging table has
reached the limit of its movement in the direction of the rotating annular table,
means for rotating said table and means for operating said cam, substantially as
described.
2. In a molding machine, the combination of a continuously rotating table
carrying a series of patterns, and mounted on a suitable support on the machine,
and means for rotating said table, with a horizontally movable frame mounted on
the central vertical shaft so as to swing thereon, and carrying the sand feeding and
ramming mechanism, a frame-bar carrying a friction roller at the rear of the
swinging frame, a tappet.secured to a vertical rotative shaft mounted in bearings
on the frame of the machine, and means connecting it with the driving shaft for
rotating said vertical shaft and tappet and thereby reversing the movement of the
swinging table, substantially as described.
3. In a molding machine, the combination with a rotatable table and means for
turning it, of a horizontally movable frame having its rear portion mounted on a
central vertical supporting shaft so as to swing horizontally thereon, a curved
supporting bar secured to the stationary table or base, a series of rollers mounted
on said curved bar for supporting the front base portion of said horizontally
swinging table above the annular rotatable table, and means substantially as above
described for giving the swinging table a horizontal swinging movement back and
forth as above set forth.
4: The combination in a molding machine, of an annular table mounted centrally
on a vertical supporting shaft and resting on a supporting base so as to turn thereon,
means for giving said table a rotary motion, a horizontally swinging frame or table
having its rear end mounted on said vertical central shaft and its front end supported
on rollers mounted on a suitable supporting base, means for giving it a swinging
movement co-inciding with the rotating table, a sand feeding receptacle mounted
on said swinging table, and means for operating it or moving it back and forth
while the swinging table is in motion, substantially as described.
5. The combination in a molding machine, of an automatically operating inter-
mediate pressing platen and means substantially as above described for operating
it, for partly condensing the sand on a pattern in a flask, a covering of yielding
material on the top of said platen, a series of ramming hammers adapted to drop
thereon to complete the condensing of the sand in said flask, and means for
operating said hammers, substantially as described.
6. In a
molding machine, the combination with the ramming hammers, of a
pressing platen, means for operating it, and a cover of felt or other equivalent
material, located at the top of the platen upon which the ramming hammers drop,
for the purposes described.
7. In a molding machine, the combination with the ramming hammers and their
operating mechanism of a pressing platen for partly condensing the sand before the
ramming hammers operate, and having a series of transverse supporting ribs on its
under face, a pressing face composed of heavy woven or closely perforated metal

page_text: secured to and supported by said ribs for allowing a free escape of air during its
action under the operation of the ramming ham:ners, and means for giving it its
pressing movements, substantially as described.
8. In a molding machine, the combination with a stationary circular table
provided with rollers and a vertical central supporting shaft, of a rotatable table
mounted on said rollers and adapted to turn on the vertical shaft, means for giving
said table a continuous rotary motion in one direction, a horizontally swinging
frame having its rear end mounted on the vertical shaft so as to swing thereon and
having its front base supported on rollers mounted on a stationary support on the
machine, means engaging with the driving mechanism and rotating table for
swinging said frame horizontally back and forth, a sand box mounted on said
swinging frame, for feeding sand into a flask located on the continuously moving
table, a pressing platen mounted on arms secured to a shaft set in bearings on the
swinging table, ramming hammers, mounted on the horizontally swinging table
above the pressing platen, for condensing the sand into the flask, and means
substantially as above described for giving the sand feeding mechanism, the
pressing platen and ramming hammers their operating movements while the
horizontally swinging table is moving in unison with the continuously rotating
table.
9. In a molding machine, the combination with the sand feeding receptacle, of
removable portions of wood or similar material at the front and ends of said
receptacle for adjusting the capacity of the same, or the amount of sand to be fed
into the flask, substantially as described.
10. In a molding machine, the combination with the swinging frame, of the
ramming hammers and vertical hammer bars mounted in said frame, and the disks
or collars mounted on top of said bars, with a shaft mounted in bearings at the top
of the horizontally swinging frame and carrying two arms provided with foot
pieces to limit their rocking movement and connected at their tops by a cross-bar,
and means consisting of a weighted arm mounted loosely on its shaft and provided
with a slot 5 and a pin rigidly secured to the shaft for limiting its movement, for
moving said arms and cross-bar into or out of engagement with the disks at the top
of the hammer bars, so that the weight will hold them in either position for the
purposes described.
11. In a molding machine, the combination with a horizontally swinging table,
means for operating it and a table adapted to rotate continuously in one direction
while the machine is in operation, a series of rollers set in bearings upon a
supporting base and a vertical shaft on which the table turus, of a sand feeding
receptacle, arms connecting said receptacle with arms secured to a shaft mounted in
boxes at the top of the horizontally swinging frame and provided with an arm
operated by a horizontal arm, a vertical driving shaft on which it vibrates, and a
friction roller in engagement with a grooved cam mounted on the vertical driving
shaft for operating the sand receptacle, substantially as described.
12. In a molding machine, the combination with a swinging frame of a vertical
rack-bar mounted in vertical bearings on the swinging frame and carrying a
ramming hammer, a gear wheel 2, in gear with said rack-bar, and mounted loosely
on a shaft set in bearings ou the horizontally swinging frame, collars rigidly secured
to said shaft between which the gear wheel rotates, a tooth secured to the collar,
a spring actuated pawl carried by the gear wheel and adapted to engage with said
tooth, to hold the wheel in engagement with the collar so as to rotate with it and
the shaft, and means substantially as above described for disengaging said pawl
from the tooth on the collar and thereby allowing the hammer to drop, as above
set forth.
13. In a molding machine, the combination with a swinging frame of a vertical
rack-bar mounted on the horizontally swinging frame and carrying a ramming
hammer, a gear wheel in engagement with said rack bar mounted loosely on a shaft
adapted to rotate continuously in one direction and set in boxes on said horizontally
swinging frame, means for rotating said shaft, collars between which the gear

page_text: wheel rotates, rigidly secured to said shaft, a tooth on one of said collars, a spring
actuated pawl adapted to engage with the tooth on the collar to hold the gear
wheel and collar in engagement and provided with a rear extension, an arm
provided with a curved slot mounted on the collar and having an inward extending
pin 3, for disengaging said pawl, and a set screw for securing said curved slotted
arm and its pin 3, at any point of its adjustment, whereby the device may
be adjusted to drop the hammer bar at any desired point, substantially as
described.
14. In a molding machine, the combination with the sand feeding receptacle and
means for operating it, of an automatically operated plate set in vertical slideways
so as to operate by gravity, a sand holding frame, and an irregular shaped bar
secured at each inner end of the sand molding frame below it, on which the lower
edge of said plate is moved back and forth as the sand receptacle is moved, and
thereby automatically operated for scraping off the top of the sand in the frame
above the flask for the purposes described.
15. In a molding machine, the combination of a supporting table provided with
a series of rollers set in bearings thereon, a central supporting shaft mounted in the
center of said supporting table, a rotatable table mounted on said vertical shaft and
resting on said rollers so as to turn thereon in one direction only, means for rotating
said table, a series of flask raising devices secured to the underside of the rotatable
table and consisting of a frame rigidly secured to the underside of the rotatable
table and carrying a roller at each end, a flat plate having a flask raising pins
which extend up through the table and platform 14, and downward extending
sides between which is mounted rollers located so as to be directly above the
rollers in the stationary frame, a horizontal bar having a wedge portion at each
end, 44-44, and located between the upper and lower sets of rollers, a depending
slotted arm pivoted to the underside of the moving table and having its lower end
connected by a pin passing through the slot and secured to a portion extending
from the wedge-bar, and a raised rib on the stationary table whereby the device
is operated by said rib as the moving table carries it over, substantially as
described.
Dated this First day of October 1896.
ORRIN BRYANT.