Improvements in Moulding Machines.
Year: 1895

page_text: Date of Application, 9th July, 1895-Accepted, 17th Aug., 1895
COMT 17LE DI MUIFICATION.
Improvements in Moulding Machines.
A communication from JOHN EDWARD DONOVAN, of No. 455 West Seventh
Street, Cincinnati, County of Hamilton, State of Ohio, United States of
America, Manufacturer.
I, ALFRED JULIUS BOULT, of 323 High Holborn, in the County of Middlesex,
Chartered Patent Agent, 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:—
This invention relates to machines for moulding pulleys. Its object is to provide
means to simultaneously withdraw the hub and rim of the pulley pattern from the
mould, means to start the flask from the follower board, and means to provide for
moulding pulleys of different widths of rim and length of hub from the same
pattern. A further object is to provide convenient means for changing the pattern
so as to mould different sizes and kinds of pulleys upon the same machine.
The invention will be first fully described in connection with the accompanying
drawings and then particularly referred to and pointed out in the claims.
Referring to the drawings, in which like parts are indicated by similar reference
letters wherever they occur throughout the various views ;-
Fig. 1 is a side elevation of a machine embodying the improvements, with the
pattern elevated ready to receive the flask for moulding.
Fig. 2 is a partial plan view of the same, a portion of the top being broken away
to expose the parts beneath.
Fig. 3 is a central vertical section of the same, the parts being in the same
position as the parts shown in Fig. 1.
Fig. 4 is a horizontal transverse section taken through line of Fig. 3, with
the parts in the position they occupy when the patterns are withdrawn from the
mould.
Fig. 5 is a central vertical section through the machine similar to Fig. 3, and
with the pattern moving parts removed so as to expose the device for moving the
flask pins, aud raising the flask after the hub and rim patterns are withdrawn from
the mould.
The supporting frame A, is a rectangular open sided box, preferably cast in a
single piece.
The top of the box has an annular opening, the edge of which is rebated, forming
an inwardly projecting flange a, upon which the ring B, which forms the outer
portion of the follower board rests. A' is a hollow column rigidly secured upon
the bottom of the frame A; on the top of this column rests a flanged ring B¹.
The neck of the ring projects within the column, and upon the flange of the
ring is supported a ring B2; these rings are held securely in place by any suitable
meaus.
The column A is turned off true on the outside, and bored true on the inside,
and upon the outside of the column is fitted a follower C. This is slotted upon one
side, and each side of the slotted portion is provided with racks c. D is a follower
fitted to slide within the column A¹. It has projecting from one side a rack d,
which projects through a slot in the column A', and between the racks c, the teeth
of both sets of racks being in the same vertical plane. The rim pattern E, is
secured upon the upper flanged portion of the follower C, and the hub pattern E',
is secured upon the top of the follower D.

page_text: The cogged segments F, have long hubs f, which project through bearings in the
frame of the machine. Upon one of the hubs is secured a lever F¹, by which the
hubs and segments are partially rotated to elevate the rim pattern or withdraw it
from the mould.
The cogged segment G by which the follower D is elevated and lowered is
secured upon the shaft g, which passes through both of the hubs. Upon the
projecting end of this shaft is secured a lever G', which has a slotted segment g¹
near its handle, through which a screw passes, which screw is tapped into a boss on
the lever F. The free end of the lever F' is perforated to receive a pin which
passes through it and into any one of the holes in the quadrant F2.
The width of the pulley rim is determined by the position in which the lever F
is locked by the pin f', and the length of the hub relative to the rim is determined
by the position in which the lever G is locked to the lever F' by the set
screw g².
It is seen when the levers F1 and G' are locked together, that the pulley hub,
and rim patterns, are simultaneously elevated to the desired position, and after the
mould is formed, simultaneously withdrawn through the template or follower board
formed by the rings B B¹ B².
The hub pattern E' is perforated to receive the bolt e, the head of which forms
the print for the hub core. The point of the bolt tapered or cone shaped above
its screw threaded portion, which is tapped into the follower D, and the lower
portion of the pattern is recessed to receive a pivoted cam e¹. E2 is a boss pattern
which is used when tight pulleys are moulded; it is adjustable upon the hub
pattern and locked in any position desired by tightening the bolt e. When a loose
pulley is to be moulded, the boss pattern is slipped down so as to leave the hub
pattern plain. This is done by loosening the bolt e; after the boss pattern E2 is
slipped down to the desired position, the bolt is again tightened up, clamping the
boss pattern firmly and holding it rigidly between the cam and the flange of the
hub pattern.
The pulley arms E³ are secured upon the ring B2. To adapt the machine for
moulding different sized pulleys, a larger or smaller rim pattern is used; if larger,
the ring B must of course be replaced by one narrower in diametrical section, and
the ring B, by one wider, so that the same machine may be adapted to mould
several sizes of pulleys.
Referring now particularly to Figs. 2 and 5, I will describe the means by which
the flasks are adjusted in position on the table and lifted perpendicularly to free
the steady pins after the mould has been formed. Upon opposite sides of the
machine are secured brackets H, the arms of which are perforated to guide the
flask pins h. H' is a shaft passing across the frame of the machine, and having its
bearings in the sides thereof. On the protruding end of the shaft is secured a
lever H2, by which the shaft is rocked. Upon this same shaft, inside the frame, is
another lever arm H³, which has a forked end passing on each side of a collar h',
which is secured firmly upon the flask pin h; pins project from this collar through
slotted openings in the ends of the bifurcated arms h² of the lever H³. The free
end of the lever H is perforated to receive a pin h³, which passes through it and
into a quadrant or projection on the frame of the machine, to hold the lever in its
elevated or lowered position. In the position shown in Fig. 5 the pins are shown
protruding through the table top, to enter holes in one half of the flask.
half mould has been formed and the flask removed, these pins are drawn down to
their lowest position, so that the pins on the other half of the flask may enter the
holes in the table top; the play of the pins his limited in either direction by the
collar. To elevate the flask perpendicularly, I have provided vertically sliding
pins J, J, two upon each side of the machine, the lower ends of each pair being
secured in a bar j. The pins J are guided in perforations in the bracket arms H,
and the pins Jare guided in brackets secured to the inside of the machine.
J² are lever arms fulcrummed upon pins ¹ in the side of the frame. Its inner ends
are connected to the cross bar j by links. The opposite ends of the lever J2 are
When a

page_text: the path of projections j, on discs J³, which are secured upon the hubs of the
togged segments F. It will be seen that when the hubs and shaft are rocked
to withdraw the hub and rim patterns from the mould, that the projection on disc J³
will strike the end of the lever J2, so soon as the patterns are withdrawn from the
mould, and the further rocking of the shaft will elevate the pins J J and lift the
flask vertically a sufficient distance above the follower board to free the task pins
from the flask and the arm patterns from the mould.
The pulley arms E³ are preferably made in two pieces, divided on a line with the
ring B¹, as indicated in dotted line Fig. 1.
The purpose of this arrangement is to avoid fitting separate arms for different
sized pulleys, as the same sized hub is frequently used for various sized pulleys.
The part of the arm pattern adjacent to the hub may be left in position and only
the parts between that and the rim changed when a larger or smaller sized pulley
is to be moulded; indeed the arm pattern may be permanently secured upon the
rings B2, of different sizes, and the other parts permanently secured upon the
supporting ring B¹, so that it is only necessary to change the rings without
removing the arm patterns from them.
As the principal part of the invention consists in providing a follower board of
three rings, a centre one to guide the hub pattern and an intervening space between
the centre and outer ring for the rim pattern, and means for elevating the patterns
for forming half a pulley through the follower board, and retracting them after the
mould is formed; I do not desire to limit the invention to the particular means
shown for protruding and retracting the half patterns, as it is obvious that many
mechanical changes may be made for accomplishing the same result, without
departing from the spirit or scope of the invention.
Having now particularly described and ascertained the nature of the said
invention, as communicated to me by my foreign correspondent, and in what manner
the same is to be performed, declare that what I claim is ;-
1. In a pulley moulding machine the combination of the frame having annular
opening in its top and a recessed depression surrounding said opening a rigid
central hollow column the follower board composed of annular sections the outer
one supported in the recess in the frame and the inner one supported upon the
central column the half rim pattern fitted to slide vertically between the outer and
intermediate sections of the follower board the hub pattern fitted to slide vertically
through the central section and means substantially as shown to elevate the hub
and rim patterns above the follower board and retract them after the mould is
formed substantially as shown and described.
2. The combination of the supporting frame the rigid central column secured
therein a central flanged ring secured upon said column the ring B2 supported upon
said flange the outer ring B supported by the flauge on the frame the follower C
arranged to slide upon the column the follower Ď arranged to slide within it the
rim pattern secured upon the follower C and the hub pattern secured upon the
follower D the racks c and d projecting from said followers the cogged segments
and the shafts and levers for operating the same for the purpose of elevating and
lowering the patterns substantially as shown and described.
3. In a pulley moulding machine the combination of the frame a central column
slotted upon one side the follower C having racks fitted to slide upon the outside
of said column the follower D having rack & projecting through the slot in the
column and adapted to slide therein, a follower board composed of rings B B+ B²
the rim pattern secured upon the follower C and the bub pattern secured upon the
follower D cogged segments F engaging the teeth of the racks and having the
hubs journailed in the frame of the machine the shaft g journalled in the hubs f
the cogged segments G secured upon said shaft between the segments F and
engaging the teeth of the rack d the lever F' secured on hub the lever G¹ having
slotted segments g² a set screw for adjusting the levers with relation to each other

page_text: and securing them together whereby the followers with the hub and rim patterns
are simultaneously elevated and lowered substantially as shown and described.
4. In a pulley moulding machine the combination of the frame two vertically
sliding followers mounted therein the hub pattern secured upon one follower and
the rim pattern secured to the other follower racks c d secured respectively to the
followers cogged segments mounted upon rock shafts for operating said followers
and means for adjusting the vertical position of the followers in relation to each
other and holding them in such position for the purpose of varying the hub
relative to the rim substantially as shown and described.
5. The combination in a pulley moulding machine of the main frame having
annular opening in the top and recessed depression around said opening a central
hollow column rigidly secured to the base of the frame the follower board formed
of three rings the outer one supported in the recess in the frame top and the inner
ones supported upon the central column the rim pattern adapted to slide between
the outer and intermediate rings of the follower board the hub pattern fitted to
slide through the central ring into the hollow column removable arm pattern
secured upon the follower board and disconnected from the hub and rim patterns
and means such as shown to elevate and lower the hub and rim patterns substantially
as set forth.
6. The combination in a pulley moulding machine of the supporting frame and
vertically sliding hub pattern of the vertically adjustable boss pattern E² the bolt e
the head of which forms the core print and the cam e actuated by said bolt to
lock the boss pattern in any position desired substantially as shown and described.
7. The combination of the frame A central slotted column A' the followers
fitted to slide within and without said column' the racks projecting from said
followers the hub and rim patterns secured upon said followers the hubs and cogged
segments to actuate the outer follower the shaft sleeved within the hubs and having
a cogged segment secured thereon to actuate the inner follower the levers for
actuating said shaft and hubs the cam discs secured upon the hubs of the follower
actuating segments the vertically sliding flask elevating pins and their actuating
levers in the path of said cam discs whereby the hub and rim patterns are with-
drawn and the flask raised by a single movement of said levers substantially as
shown and described.
Dated this 9th day of July 1895.
BOULT & WADE,
Agents for the Applicant.