Improvements in Machinery for Stamping Coins and the like.
Year: 1895

page_text: Date of Application, 23rd Oct., 1895-Accepted. 21st Mar.,
1896
COMPLETE SPECIFICATION.
Improvements in Machinery for Stamping Coins and the like.
'
I, LOUIS SCHULER of 10ª Sauerbrunnenstrasse, Goeppingen, in the Kingdom of
Wurttemberg. Manufacture, 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.-
The coining machines hitherto in use are divisible in general into two systems
consisting essentially in those which have a movable, and those which have a fixed
table, and where the coining pressure is effected by the respective pressing down
and raising up of the upper die by means of an elbow lever arrangement, and wherein
the coined blanks have to be lifted by means of the lower die out of the stamping
ring for the purpose of pushing the same away, and insertion of the next blank.
This latter operation is effected in the machines with movable table by the
mechanical drawing down of the same, and in such as have a fixed table by the
uerhanical lifting of the lower die
As the coined blanks are tolerably firm in the coining ing a corresponding
force is necessary to push them out, and consequently, immediately upon the coined
blank leaving the stamping ring the resistance suddenly ceases and there is a Jai or
recoil in the die and the table movement similar to that in a fire-arm when the
projectile leaves the barrel of the gun Thus causes an upward jerk both in the
coined blank, as also in the freshly inserted blank which, especially in the case of
very thin coins, often has for its result that the blank springs out of the delivery clip
Instead of falling into the stamping ring, and thereby causes an imperfect impression.
In order to overcome these drawbacks and to furnish a means of delivering even the
thinnest comed blanks in an absolutely certain manner to and from the dies, I have
devised my invention, which is divisible into the following sections:---
1. Both dies for the stamping are moved simultaneously towards and from each
other by means of two bont lever arrangements Figuro 5
2. The lower die is no longer made use of for pushing out the commed blank, but
a special mechanism is applied to this purpose
Figs 6 and 8
3 Several stamping rings are employed (no longer one only) and consequently
the removal of the coined blank is effected away from the dies and downwards
instead of upwards as usual, Figs. 6 to 8
4. The delivery of the coined blanks to the stamping dies is no longer effected by
means of clips or pushes, but by means of the revolving apparatus shown in
Figs. 1, 6, 7, and 8
The withdrawing of the coined blank from out of the store receptacle is no
longer effected by the usual pusher and clip in two operations but is effected by one
operation only, and moreover, directly from the store receptacle into the coining ring,
Figs 7 and 8.
Fig. 1 shows the front elevation.
Fig. 2 the vertical section, and
Fig. 3 the back elevation of my coming machine, whilst
Figs. 4 to 13 show details of the machine partly on a larger scale.
The bent level system referred to in paragraph 1 which is actuated by a sheave 5
(Fig. 3) turning the crank shaft 1, push iods 8, 81 displayed in Fig 5 consist
essentially of two head pieces 6, 6' which are each provided with a projecting nose
and connected with the push rods 8, 8' respectively by means of the levers 7, 7.
The nose of the head piece 6 rests in a slot of the pendulum 9, the lower end of which

page_text: As therefore lever 6, pondnlum 9 and stamp guide 10 are not further connected
with each other the said parts, would upon the raising of the lever 7 come apart it it
were not for two springs 12 in connection with the rods 12' which counteract it
whilst as regards the lower elbow lever system the same object is attamed by means
of the two weighted levers 14 connected to the lower stamp guide 10', which revolve
upon the bolts screwed into the stamping frame A at 14' As the pendulums during
the coining strike the one upwards and the other downwards, the simultaneous
approach and removal of the coining dies 15 effected, notwithstanding that both push
bars are actuated by one and the same crank in the same dnection. The stamping
of the blanks is consequently effected in the centre of the coming ring 161, Fig. 7,
and the coined blank remains pressed into the coining ing, whilst both dies after the
pressure has been given withdraw themselves again from it As the ring is fixed in
the revolving disc 16 which makes a one-oighth of a revolution at each backward
movement of the dies, the next following coming ring is advanced, with another
blank to take the place of the previous one (Paragraphs 2 and 3.) Whilst both
dies 11, 11 effect the stamping and are approaching each other for this purpose, the
lever 32 is simultaneously moved with the upper stamp guide 10 in the same
direction. This lever, which is connected at 33 to the stamping frame, and at 34
with the upper stamp gunde 10 is connected at its prolongation with the pressure
piece 35 and offects the pressing out of the comed blank when the coining ring
which is brought to it contains a blank The pushed out coins then fall through the
tube 36. Figs. 1 and 2 into a receptacle placed underneath
Paragraph 4 The revolving disc 16 which contains eight coining rings makes a
one-eighth of a revolution on every stroke of the dies, as already stated, and thereby
delivers the coined blanks contained in the coming rings to the coming dies
Paragraph 5 The coined bianks themselves are taken during the operation from
the store receptacle 30 automatically by means of the 8 pushes 27 in the revolving
disc 16 and delivered to the respective coming rings as follows These pushes 27
are by means of their end part provided with a projection 271 engaging in the part 28
of the fixed revolving disc cover 29 , upon the turning of the revolving disc as
soon as they come in front of the store receptacle 30 they are pressed forward by
means of parts 27 and 28 against the aperture of the coining ring whereby they
cause the blank taken from the receptacle to tall into the coming ring, and imune-
diately are drawn back into their previous position.
As the coming dies during the motion of the revolving dies are drawn back out of
the coming rings it would be possible for that blank which is nearest to the said
dies to fall down out of the coining ring as soon as it atives over the opening in
the table 15 above the lower die, and thereby cause interruption and false blows,
I have arranged to prevent this, two pushes, 30, 30' on the table 15 (Figs. 7 and 9)
which are usually pressed against each other by means of the circular spring 31.
When the pushes, as shown in Fig. 9 are pressed together they form a smaller
opening than that of the coming ring, and the blank can therefore not fall out
of the coining ring
On the upward motion of the lower die, those pushes (whose opening is widened
out below) are thrust apart by the die, and the coined blank to be stamped is
carried lying upon the die up to the stamping point
+
The above mentioned revolving disc motion is obtained from the crank shaft 1 in
the following manner :-
1
On the shaft a sleeve 19, Fig 3 is placed, provided with a curved slot in which
the roller of the lever 20 engages, whereby this latter, as well as the lever 22, the
shaft 28, the lover 24, the drawbar 25, the connecting member 26 and the rod 18
(Figs. 1 to 4) are set in backwards and forwards motion, the curved slot of the
sleeve 19 19 suitably arranged so that the backwards motion of the rod 18 is quicker
than its for wards motion. On the free end of the bar 18 is placed the piece 17 which
conveys the motion of the bar 18 to the revolving disc 16. In order to prevent the
revolving disc from going too far, that is, in order that the same should make only
a one eighth of a revolution at each motion, it is so arranged that at the end of

page_text: the projection of the revolving disc there is the corresponding piece cut out of the
check piece 37, whilst at the commencement of the projection the said check piece 37
is held uplifted by means of the projection 18' on the bar 18, which is connected
with the movable piece 38 of the table 15 and is held up until the revolving disc has
completed the first quarter of its forward motion, then the same check piece 37, is
pushed in again by means of the spiral spring 39 In order to prevent damage to
both dies, especially by the striking of the saine upon each other when accidentally
no blank is lying between them. I have devised an extremely sensitive safety
arrangement, Figures 10 to 13, which constats essentially of the arrangement that in
such a case the bar 8¹ actuating the lower die, which is formed of two halves coupled
together, is lengthened For this purpose, the crank 1 gives on its upward motion,
by means of a projection 40 placed thereon, to the thumb 41 and the loosely
connected therewith and longitudinally divided cylinder 42 a turning, limited by the
segment 43 placed thereon so that the flat portion of the bi-sected cylinder with the
flat portion of the bi-sected shaft forms one surface, and the lower shaft portion 42'
ammpeded (that is to say as far as it is permitted by the slot 45 in the sleeve 44)
can move forward whereby the rod is lengthened and a pressure upon the die 14
avoided.
On the downwards movement of the crank 1, the head of the pendulum rod 46
strikes against an india-rubber buffer 47, placed against the bed-plate, whereby the
shaft is again pushed together and the bi-sected cylinder 42 is returned again to
the position shown in Fig. 1 by means of the pressure of the spring 48 upon the
segnient 43, and the shaft pieces are again joined up into a whole."
If as usual a blank 15 between the dies, and the pressure is exerted hereon, the bar
endeavours to lengthen, but this is prevented by means of the flat part of the
bi-sected cylinder, which stands in an inclined position with regard to the flat part of
the shaft. When therefore the projection 40 moves the piece 41 the same is not able
to take the cylindor with it because the friction between shaft and cylinder in
consequence of the pressure which is exercised upon the same is too great ID.
consequence the piece 41 is obliged to remove itself somewhat in a sliding movement
upon the cylinder 42, the projection slips over 41, whereby the spring 49 presses 41
back agam
The projection 40 is adjustable upon the crank in order that the
respective comed blanks can be properly put in place.
If accidentally two blanks are placed between the two dies no damage can result
because in this case a friction coupling is set in motion, which at once stops the
machine. The weighted lever 50 serves to put the machine in and out of gear,
whilst the lever 51, Fig 1 is destined to put the fly wheel in and out of gear.
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. A stamping press for coins and the like characterised by the simultaneous
movement of the upper and lower dies (11, 11') between which the coin blanks
are automatically inserted in the coming rings (16) of a disc 16 rotating with
regular intervals, whilst the coin blanks are supplied to the said coining rings by
to-and-fro moving pushers 27.
2. A coining press as set forth in Claim 1, in which for the ригрозо of preventing
the falling down of the coin blanks through the aperture in the table between the
stamps before the entrance of the lower die into the coining ring, two pushes 30¹
pressed together by a spring are attached to the table 15, which are oventually
separated by the rise of the lower die
3. A coining press as set forth in Claim 1, in which for the purpose of
pressing the
stamped blanks out of the rotated coining rings, a bolt connected with the upper die
is inserted into the ring containing the coin on the withdrawal of the upper die, and
presses the coin out of the ring.
4. A coming press as set forth in Claim 1 in which for the purpose of preventing
the dies from striking each other, the bar 81 actuating the lower die is formed in two

page_text: parts so combined that they on the upward motion of the driving crank 1 and of the
lower die are drawn out from each other, when no blank is between the dies, so
that a striking together of these latter is prevented, whilst upon the downward
motion of the crank the part in question are again drawn together in the manner
herein before set forth and shewn in the accompanying drawings
Dated this 22nd day of October 1895.
W. P. THOMPSON & Co.,
31, High Holborn, London, W.C, Patent Agents for the Applicant,