An Improved Machine for Making Dominoes.
Year: 1896

page_text: Date of Application, 20th Jan., 1896-Accepted, 7th Mar., 1896
An Improved Machine for Making Dominoes.
A communication by MORITZ STEIN and JOSEF BENJAMIN FREUD, of
37 Puchmajerstrasse, Königliche Weinberge, near Prague, in the Empire of
Austria, Manufacturers.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, 118 New Street, Birmingham in
the County of Warwick and 31 High Holborn in the County of Middlesex, Civil
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 :-
This invention relates to a machine for making domino blocks and instead of the
materials hitherto employed, namely wood and ivory, these blocks are made of
underplates cut out of pasteboard instead of wood, and with a facing of celluloid
instead of ivory.
This machine is shown on the accompanying drawings, in which,
Figures 1 and 2 are side and front elevations respectively;
Figure 3 is a vertical section partially in elevation through the stamps and
matrices;
Figure 4, a plan view of the matrices with the frame and carriage;
Figures 5 and 6 are views in plan and vertical section respectively of the
first matrix with the spring suaps for holding fast the celluloid and the pasteboard
strip;
Figure 7 shows a plan and section of the position of the celluloid and the plate
of pasteboard at the commencement of the operation;
Figure 8 is a section of the domino block on leaving the first matrix ;
Figure 9 is a section of the same after the stamping in the second matrix ; and
Figure 10 after the stamping in the third matrix.
The machine consists of a frame G in which the main shaft W, which carries
belt pulleys r and is provided with a fly wheel S, is mounted. On the other end of
this shaft is mounted a cog wheel Z which drives a larger cog wheel Z', which in
turn is keyed on a shorter shaft K. The shaft K by means of a connecting rod p
actuates a press stamp P which by means of a carriage s is mounted in the
frame.
This shaft also operates the ejector and the conveying mechanism. A cast iron
piece a is screwed on the frame G and is provided with two grooves in which twc
square-sectioned bars bc of the carriage, are mounted.
These bars have a cross bar d screwed on their front ends, Figures 3 and 4, and
carry three pairs of cross bars f screwed on and provided with catches e, each two
of said cross bars f being arranged in line endwise with an interstice between
their ends somewhat less than the width of the domino block or in other words of
the matrices.
The catches e are arranged in recesses g provided in the ends of the cross bars f
and are revoluble on a pin g' and pressed by a spring constantly against the
side of the recesses, which corresponds to the position for the feeding or conveying
movement.

page_text: position, so that the plates p p³ descend and allow the pins to project a little for
the objects herein after described.
The matrices are also provided with fixing devices at the sides for the domino
blocks which are to be treated, the device of the first matrix M' having on each
side 2 snaps, Figure 4, which are shown in detail in Figures 5 and 6. As already
explained on the stamp moving upwards, the slide moves backwards and pushes
each domino block exactly over the next matrix, and then immediately returns.
In order that the domino blocks shall not be carried along with the returning
movement, a spring snap or hooks is arranged on the first matrix M' so as to
project sideways and which on the passage of the pasteboard strip is pushed
outwards by the latter, but immediately they have passed, springs back again by
the action of the spring s' and rests in front of the plate B. The hook is arranged
at the end of a pin s guided in a slot of the frame. A vertical spring snaps,
Figure 6, is also employed to secure the celluloid plate C in its position, which
snap allows this plate to pass, but by the action of a spring sa immediately after
the passage of the plate, rests behind it and prevents it being pushed back.
The second matrix has on each side a spring jaw u, Figure 4, guided by pins u³,
which jaws are pressed against the previously stamped plate by means of spiral
springs arranged at the sides. Each jaw has also a small projection u³ at its
rear end, which projection on the passage of the plate moves with the jaw to one
side, but after the plate has passed rests behind this plate. The third matrix has
two pairs of such snaps which act in a similar manner by means of suaps t and
springs 2, Figure 3. Of course all these fixing devices are attached to the frame
and not to the matrices.
The process of stamping the domino blocks is as follows:-
On the descent of the stamp P, the slide b c d moves in the direction of arrow 4
into its extreme outermost position shown in Figure 4 (this action being produced
by the herein before described action of the guide plate j') and remains stationary
for some seconds by the action of the edge 2 of the guide piece j'. Whilst it is
stationary, the celluloid plate C with the paste-board plate B covering the same is
placed on the receptacle h, and pushed down onto the conveying track and then
moved somewhat forward so that the plate B rests against the slide h", whilst the
celluloid plate is caused to lie with its edge beneath the slide h and rests against
the front of the flattened part of the plate h¹. In the meantime the stamp P rises,
the slides h² and plate ¹ push the plates B C over the matrix M', the plate B being
guided by the slide and the plate C by a groove he, Figures 4 and 5. The
stamp P then again descends, the slide b c d moves back, and the ejectors n³ n
descend with the matrices M' M³ under the action of the eccentric E. The stamp
then presses the plates B C into the recess of the first matrix M', thus causing the
edges of the celluloid plate to be bent in the manner shown in Figure 8. On the
rising of the stamp the matrix ejectors also rise and bring the domino block into
the plane of the conveying course, at which moment the slide charged with fresh
plates B and C is moved forward and brings these latter into the first matrix,
whilst the first pair of conveyors f convey the block from the first matrix to the
second. Ou the descent of the stamp, the edges are bent up in the first matrix
whilst the second matrix rounds these edges and bends them over the plate.
The inner curved walls of the hollow stamp, or in other words, the part 1, bend
the edges round, whilst the pressure block which comes to bear on the contact.
block a compresses the pasteboard b. The press block has a spring action by
means of two spiral springs a².
On the further movement of the machine, the conveyor brings the plate into
the third matrix which then descends with the plates, whilst the pins p' project a
little from the plate p, so that the stamp S', which has penetrated into the matrix.
and exerts a pressure, impresses the block lying on the pins pl with spots.
It is thus evident that at each descent of the stamp, three blocks are treated, the
edges of the celluloid plate being bent up in the first matrix, bent round and
pressed flat in the second and impressed with the spots in the third, whilst, the bent

page_text: screwed on said bars and catch bars f which are arranged in pairs and symmetrically
to the longitudinal axis of the carriage, in such a way that the interstice between
the bars of each pair is somewhat smaller than the width of the domino block,
the slide being operated by means of a lever (i) pivotally connected to the cross-
bar d and to a lever (i), the said lever (i) receiving the forward movement, during
the descent of the carriage (s), by means of an oblique edge 1 of a guide piece (¹)
screwed fast on the carriage, whilst the stationary interval of the conveying
carriage necessary for the insertion of fresh plates, is obtained by means of a
vertical edge 2 on said guide piece, and the pushing back of the carriage with the
object of conveying the blocks to the next matrix on the lifting of the stamp P
and the ejectors (n³ n*) is effected by means of a spiral spring (*) substantially as
described.
6. In a machine for making dominoes, the arrangement of a conveying or feed
carriage or slide which is provided with a plate h¹ screwed to the carriage and
flattened at one end and with a receptacle (h) and the further arrangement of a
small slide (h) which projects beyond the plate (1) round the edge of the celluloid
plate (C) with the object of conveying the plates (B C) placed one above the other,
into the first matrix (M'), the domino plate (B) being pushed forward by the small
slide (2) and the facing plate (C) by the flattened plate (¹) which latter is also
guided by a groove (h), whilst catch bars (f) provided with spring hooks (e) on
their front ends, which hooks lie in front of the domino blocks, engage and convey
the latter from one matrix to the next, and from the last matrix into the shute (R),
whilst on their return they pass unimpededly over the blocks, substantially as
described.
7. In a machine for making dominoes, the arrangement of fixing devices for
preventing the blocks placed on the matrices being carried back on the return of
the slide, consisting in the first matrix of a pair of spring snaps (s) horizontally
held in guide grooves in the frame, and operated by springs (s) and also of a pair
of vertical snaps (2) operated by springs (53), said snaps (s) on the passing of the
domino plate (B) being deflected by their rounded ends, but after its passage
resting with their straight surfaces behind the plates (B) and holding them, whilst
the said snaps (2) on the passage of the celluloid plate (C) rise upwards and
finally also lie behind this plate substantially as described.
8. In a machine for making dominoes, a fixing device for the second matrix
consisting of jaws u guided in the frame by means of pins us and having a spring
action by means of spiral springs u', said jaws being rounded on the inner edges,
and by the action of the springs u¹ retain the domino blocks, and also by means
of small projections u³ prevent their being shifted out of the matrices substantially
as described.
9. In a machine for making dominoes, a fixing device for the domino blocks
conveyed into the third matrix, consisting of two pairs of spring hooks t which
permit the domino blocks to pass into the matrices but prevent the same being
displaced therefrom, substantially as described.
Dated this 18th day of January 1896..
WM. P. THOMPSON & Co.,
Agents.