Improvements in and in Machinery for the Manufacture of Weldless Chains.
Year: 1895

page_text: Date of Application, 11th Feb., 1895
Complete Specification Left, 31st Oct., 1895-Accepted, 14th Dec., 1895
PROVISIONAL SPECIFICATION.
Improvements in and in Machinery for the Manufacture of
Weldless Chains.
We, HIPPOLYTE RONGIER, of 2, Salford Terrace, Gravelly Hill, Birmingham,
Engineer, and THE PATENT WELDLESS STEEL CHAIN AND CABLE COMPANY,
LIMITED, of 112, Edmund Street, Birmingham, do hereby declare the nature of
this invention to be as follows :-
This invention relates to improvements in the method of, and machinery for, the
manufacture of weldless stayed chains from a steel or other bar of cruciform
section by a consecutive series of cold punching and other operations for which
former Letters Patent were granted to the said Hippolyte Rongier respectively
dated January 8th 1889, No. 370 and July 30th 1889, No. 12,109.
The present improvements relate to the initial stage of manufacture and have
for object to reduce the number of the series of punching operations to which the
bar has heretofore been subjected in order to bring it to the stage at which it is
ready to be broken up into a series of enchained links and thenceforth ceases to be
a rigid bar. These series of operations have heretofore been five in number
involving five distinct stages of progress and five distinct sets of tools, and each set
of operations has heretofore been performed first along the whole length of one
pair of webs of the cruciform bar and then along the whole length of the other
pair of webs, the bar being therefore passed twice through the machine for each
stage.
By the present improvements we are enabled to bring the bar to the same stage
of progress by a single series of punching operations performed at a single passage
of the bar through the machine first on the one pair of webs and then on the other
pair alternately. Besides accomplishing at one passage of the work through the
machine, and in one set of operations, the result for which five distinct sets of
operations, and ten passages of the work through the machine, were heretofore
necessary we are also enabled to dispense with the operation of trimming the outer
and inner ends of the bows of the links which heretofore followed the operation of
breaking up the bar into a chain of links, which was a troublesome operation
involving much skill and hand labour in properly presenting the two ends of each
link to the dies for removing the superfluous metal left from the preceding punching
operations.
According to the present improvements we combine, in one holder, pairs of
punches for removing the whole of the metal from between the outer ends of con-
secutive links of the same series with punches for removing the whole of the metal
from within the bows of the link, these operations being performed at one stroke
of the machine on the one pair of webs and at the next stroke upon the other pair
of webs, the bar being turned a quarter round after each stroke and fed forward a
distance equal to the pitch of the chain.
The first mentioned operation, i.e. the removal of the metal from between the
outer ends of two consecutive links formed from the same pair of webs (which for
distinction we call links of the same series) is performed in three stages, or by
three sets of punches acting simultaneously at different points of the bar. At the
first stage, a pair of broad notches is cut in the two horizontal webs of the bar,
said notches extending the full depth of said webs and removing the whole of the

page_text: metal from between the outer ends of links of the same series except that the
latter are left square at the outer corners for a purpose hereafter explained, and
except that the core portion of the cruciform rod which is common to both pairs of
webs is not removed. This notching operation is performed concurrently with the
operation of punching out the interior of the link and concurrently with the
operation of rounding the outer ends of the links, by means of three sets of
punches acting on different parts of the bar simultaneously, that is to say the
leading pair of external punches which notch the bar as above mentioned are
followed in point of distance by the internal set of punches, which are in turn
followed by another pair of external punches of a form adapted to round the ends
of the links. The internal set of punches is formed, preferably, of five punches
combined and acting as one but set so that the centre one shall come into action
before the others which may also be set so that one pair shall come into action
before the other pair. The two pairs of internal punches form pairs of half round
apertures in the two horizontal webs close up to the vertical webs of the bar whilst
the central or fifth punch removes the core portion of the bar which is common
to both pairs of webs and which was left after the action of the first pair of external
punches. It also removes a small portion of the webs at either side of the core so
as to leave only sufficient metal to form the stay or stud in the subsequent link
closing or compressing operation. The central punch descends in the notch which
was formed in the vertical web at the previous stroke and advantage is taken of
this to control the feed of the bar, the form of the said central punch and of the
notch in which it descends being such that a slight wedging action is produced
which rectifies any inaccuracy of feed and ensures correctness of pitch.
A peculiarity of all these punches, and particularly of the internal punches, is
that, instead of making the shearing or cutting edges of the punches rectangular,
we bevel them off slightly to an obtuse angle by grinding, after hardening and
tempering, with a view to avoid liability of these edges breaking off in work which
they are liable to do in consequence of inequality of temper, the grinding off having
the two-fold effect of removing the excessively hard and brittle portion, letting
down the temper of the adjacent portion, and bringing it to such a form that it is
less liable to break off, without materially destroying the shearing or punching
action. The object with which the outer ends of the links are left with square
corners by the first pair of external punches is that these corners shall afford
support when the core portion of the bar between these two ends is punched out at
the next stroke, as without such support the bar would be liable to yield under the
pressure of the internal punches whereas it is essential to the operation that the
bar should be kept straight, since it could not otherwise be turned round after each
stroke of the punches.
The bar is supported on bed dies by a pair of laterally-movable gripping jaws
adapted to embrace the horizontal webs and grip the upper one of the vertical
webs of the bar, so as to hold the bar firmly in position during the descent of the
punches, and also act as a taker-off to hold the bar down during the ascent of the
punches. These jaws are fitted to slide in guides and are operated by reciprocating
cam bars with which is combined an automatic feed device and stop motion. The
automatic feed consists of a finger pivoted on an axis carried by the reciprocating
cam bars, the finger being adapted to engage with the notched web of the bar and
to be carried forward with the reciprocating cam bars, during the closing
movement of the gripping jaws, there being sufficient lost motion of the cam
bars to enable the feed movement of the bar to be completed before the closing of
the jaws.
The machine is driven, preferably, through a clutch which is automatically
disengaged after each stroke by the action of a cam, a spring being at same time
put into compression for throwing the clutch into gear again. The clutch is
retained in the disengaged position by a locking device which must be released in
order that the stroke of the punches may be repeated after the bar has been turned
round and fed forward. The release of this locking device is made dependent on

page_text: the completion of the stroke of a lever or other organ by which the jaw operating
cams are actuated so that in the event of a punching of metal rising with a punch
and remaining in the hole or otherwise preventing the closing of the gripping jaws,
the clutch will not be thrown into gear to repeat the stroke of the machine.
The turning of the bar a quarter round after each stroke is effected by passing
the cruciform bar through an aperture of corresponding shape in a boss fitted to
rotate and moved either alternately to and fro, or continuously in one direction
through a quarter revolution by any suitable device operated from the main shaft
or other convenient part of the machine.
After the bar has been thus punched and whilst it is still rigid, i.e. before it is
broken into links, I proceed to the operation of bringing the side members of the
links to a rounded section by stamping between a pair of dies of appropriate form,
having vertical slots to receive the vertical webs, the inter-link notches in the
vertical webs straddling corresponding parts of the dies which serve to accurately
guide the bar in placing the link to be stamped in the proper position in the cavity
of the bed die. The severance of the bar into links is then effected as before, and
the ends of the links are then brought to a rounded section by a similar stamping
operation, after which the links are compressed laterally to bring the two parts of
the stud or stay together, and the link to the desired width and form.
Dated this 11th day of February 1895.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.
Improvements in and in Machinery for the Manufacture of
Weldless Chains.
We, HIPPOLYTE RONGIER, formerly of 2, Salford Terrace, Gravelly Hill,
Birmingham, and now of Gartsherrie near Coatbridge North Britain Engineer,
and THE PATENT WELDLESS STEEL CHAIN AND CABLE COMPANY, LIMITED,
of 112, Edmund Street, Birmingham, do hereby declare the nature of this inven-
tion, 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 the method of, and machinery for, the manufacture of
weldless stayed chains from a bar of steel or other metal of cruciform section, by a
cousecutive series of cold punching and other operations, and it consists in improve-
ments on the invention for which former Letters Patent were granted to the said
Hippolyte Rongier, respectively dated the 8th day of January 1889, No. 370; and
the 30th day of July 1889, No. 12109.
The present improvements relate to the initial stage of manufacture, and have
for object to reduce the number of the separate punching operations necessary to
bring the bar to the stage at which it becomes a roughly formed chain without
ceasing to be a rigid bar. These operations have heretofore been five in number
and it has consequently been necessary to pass the work through five distinct
stages of progress and five distinct sets of machines. Moreover, as each set of
operations has heretofore been performed first along the whole length of one pair
of webs of the cruciform bar and then along the whole length of the other pair of
webs, it has been necessary to pass the bar twice through each machine for each
stage of progress. In consequence of the large number of machines required, the
cost of the plant has been very high, and owing to the length of the bars
operated on, great space has been required to accommodate these machines, and
the great number of times which the bars must be handled in order to pass them
through the various machines involves a great amount of hand labour and adds
greatly to the time and cost of production.
J

page_text: By the present improvements we are enabled by a single series of punching
operations performed at a single passage of the bar through a single machine to
bring the bar to the same stage of progress as that heretofore obtained by at least
five different operations requiring ten passages of the bar through the machines,
the punching being now performed first on the one pair of webs and then on the
other pair alternately. Besides accomplishing at one passage of the work through
the machine, and in one set of operations, the same result as that for which five
distinct sets of operations, and ten passages of the work through the machine, were
heretofore necessary,
the punching operation is now performed in such manner that
we are also enabled to dispense with the subsequent operation of trimming the ends
of the links. This trimming operation beretofore followed the operation of breaking
up the bar into a chain of links, and required much skill and hand labour to
properly present the two ends of each link to the dies for removing the superfluous
inetal left from the preceding punching operations.
In order that the improved method of operation may be more readily understood,
we have illustrated in Figure 1 of the accompanying drawings, forming part of
this Specification, a perspective view of the bar as it appears after being operated
on for a portion of its length by the combined punches whereby the metal is
removed at one stroke, both from within the bows of a link and also from between
that link and the adjacent links formed from the same pair of webs, the combined
operation being performed on the bar alternately in two directions at right angles
to one another, that is to say first on the one pair of webs and at the next stroke upon
the other pair of webs, the bar being turned a quarter round and fed forward a
distance equal to the pitch of the chain, after each stroke.
The mechanism whereby the operations of punching, turning, and feeding the
bar are performed is illustrated in Figures 2 to 14, Figure 2 is a perspective view
Figure 3 an inverted plan and Figure a sectional elevation on line 4-4 Figure 3,
of the combined punches, Figures 1 to 4 being drawn to a larger scale than the
other figures. Figure 5 is a plan and Figure 6 a part sectional side elevation
(both contracted by portions being broken out) of the apparatus in the position
occupied after the feed of the cruciform bar has taken place and before the descent
of the punches. Figure 7 is a plan and Figure 8 a part sectional side elevation
(both contracted by portions being broken out) of the apparatus when in position
to permit of the turning and feeding of the cruciform bar. Figure 9 is a section
on line 9-9 Figure 5. Figure 10 is a rear elevation of the apparatus when in the
same position as that shewn in Figure 5. Figures 11 and 12 are sectional elevations
on lines 11-11 Figure 6, and 12-12 Figure 8 respectively, shewing the ratchet and
tappet gear for operating the bar-turning mechanism. Figure 13 is an end
elevation of a gauge to be used at the commencement of the work on a bar. All
the figures from No. 5 to No. 13 are drawn to one scale. Figure 14 is a side
elevation of a punching machine shewing the clutch mechanism through which the
punch operating shaft is actuated, drawn to a reduced scale.
Referring to Figure 1. we have indicated the two pairs of webs constituting the
bar A of cruciform section, by the letters a, a, and a', a', in order to distinguish
not the webs themselves but the position they occupy for the time being with
regard to the punches. Similarly the links of the chain to be formed from the
same pair of webs will be distinguished as links of one series and the alternate links
to be formed from the other pair of webs as links of the other series.
The removal of the metal from between the outer ends of two consecutive links of
the same series (webs a, a, for example,) is performed in three stages, that is to say
by three sets of punches acting simultaneously but at different points in the length
of the bar. At the first stage, a pair of notches 1, 1, is cut in the two webs a, a,
supported in the horizontal position on the bed dies as hereafter described, said
notches 1, 1, extending the full breadth of said webs, that is to say close up to the
webs a', a', the links being left square at the outer corners 2, 2, for a purpose
hereafter explained. The notches 1, 1, are made concurrently with the operation
of punching out the interior portions 3 and 4, 4, of the link immediately preceding

page_text: the said notches 1, 1, and concurrently also with the operation of cutting off the
corners 2, 2, from that link and from the previously formed link of the same series
thus bringing the notches to the form shewn at 1", these simultaneous punching
operations being performed by means of three sets of punches acting on different
parts of the bar.
As shewn in Figure 3 the leading pair of external punches b, b, which punch the
notches 1, 1, as above mentioned, are followed in point of order by the internal set
of punches which remove the parts 3, 4 4, which punches are in turn followed by
another pair of external punches c, c, for removing the corners 2, 2. The internal
set of punches is formed preferably of five punches d, e e e e, combined and acting
as one but set so that the centre one d shall come into action before the two pairs e
which may be set so as to come into action simultaneously, or the one pair before
the other pair. The central punch d descends in the notch 1 which was formed at
the previous stroke in the uppermost web a', and removes the core portion 3 of the
bar common to both pairs of webs a, a, and a', a¹, and immediately thereafter the
two pairs of internal punches e e, e e, form the pairs of half round apertures 4 4, 44,
in the two webs a, a, close up to the vertical webs
a¹.
It will be seen that the punch d makes an aperture of rather greater width than
the thickness of the web by removing a small portion of the webs at either side of
the core 3 leaving only sufficient metal to form the stay or stud of the link. This
central punch d in descending in the slightly flared notch 1 which was formed in
the web a', (now uppermost) at the previous stroke of the punch serves also to
control the accuracy of the feed of the bar, and ensure correctness of pitch.
These punches may be made of the ordinary form that is to say with square edges
except that the punches e are slightly chamfered off on the edge next the web at
either side of which they pass, the object of so chamfering them being to ensure
the punchings falling clear of the work and dies instead of remaining adherent to
the vertical web as they might do were the dies e so sharp on the inner edges as to
cut against the face of the vertical web after passing through the horizontal web
for the time being. Instead, however, of making the other shearing or cutting
edges of the punches rectangular, they may be bevelled off slightly to an obtuse
angle (thus making the face of the punch slightly convex) by grinding, after
hardening and tempering, with a view to avoid liability of these edges breaking off
in work, which they might do in consequence of inequality of temper, the grinding
off having the twofold effect of removing the excessively hard and brittle arris
portion, letting down the temper of the adjacent portion, and bringing it to such
form that it is less liable to break off, the shearing or punching action being,
however, slightly diminished so that rather more power is required than for a punch
of the usual form.
The object with which the ends of the links are left with square corners 2 by the
first pair of external punches 6 b, is that these corners shall afford points of support
for the work as close as possible to the part from which the core portion 3 is to be
punched out at the next stroke and so prevent the bar yielding and becoming bent
under the pressure of the internal punches d, e e, e e, it being essential to the
continued operation of the machine that the bar should be kept straight in order to
permit of its being turned round after each stroke of the punches.
Having thus explained the sequence of the operations, we will proceed to describe
the construction and operation of the punching machine, with reference to Figures 2
to 14.
The cruciform bar A is supported by a pair of laterally movable bed dies B, B,
and gripping jaws C, C, the latter being carried by and moving with the bed dies,
and being adapted to embrace and overlap the horizontal webs a, a, of the bar
whilst the opposing edges of the dies B grip the lower one of the vertical webs a', a',
so as to hold the bar firmly in position during the descent of the punches, the jaws C
also acting as takers off to hold the bar down during the ascent of the punches.
These dies B and jaws C are fitted to slide in transverse guides in the frame D
towards and from the centre line of the machine and they are operated by

page_text: reciprocating cam bars E fitted to slide longitudinally in guides on the frame D
and provided with inclined cam surfaces adapted to act on friction rollers c', carried
by studs fixed to the dies and jaws B, C, so as by the longitudinal motion of the cam
bars in the one or other direction to cause the dies and jaws to move towards or
from each other, as the case may be.
With these cam bars is combined an automatic
feed device and stop motion. The automatic feed consists of a finger F pivoted on
an axis carried by the reciprocating cam bars E and adapted to engage with the
interlink notches 1 formed in the web of the bar which for the time being stands
uppermost, the feed movement of the bar being thereby effected (in the direction of
the dotted arrow Figure 6) during the closing movement of the dies B and jaws C.
The cam bars E are reciprocated by a lever G fulcrumed at G¹, upon the frame D
of the machine and provided with a pair of short arms / whose ends engage in
slots, in the yoke-piece E', connecting the cam bars E. The lever G may be
actuated either manually or from the main shaft of the punching machine. The
finger F is put into engagement at the proper time with one of the notches 1 in the
uppermost web of the bar A by a presser roller y carried by an arm or arms_g',
fixed to the lever G, the roller acting on the inclined end, of the finger. The
lost motion due to the length of the slots h³, permits of this action taking place
before the cam bars E begin to move, the presser roller g continuing to hold the
finger F in engagement with the bar A throughout the forward stroke of the cam
bars E. On the return stroke of the lever G the lost motion in the slots h', allows
the presser roller to be first moved off the finger F which being left free
disengages itself through the action of a counterweight or of a spring, from the
bar A, whereupon the cam bars E are moved backward and the dies B and jaws C
are opened to permit of the bar A being rotated.
In order to prevent the punched bar bending under the pressure of the finger F
or by its own weight a suitable support (not shown in the drawing) would be provided
for the bar to rest upon after it has passed out of the machine.
The turning of the bar A one quarter round after each stroke of the punches is
effected during the later part of the opening motion of the dies B and jaws C (that
is to say after the bar A has been released) by means of a rotating guide I mounted
in the end of frame D, said guide having an aperture of such shape as to give
passage to the bar A whilst causing it to turn with the guide when the latter is
rotated through a quarter revolution alternately in either direction after each
opening of the dies B and jaws C. For this purpose the guide is provided with a
crank arm i which is coupled by a link , with a crank j on a shaft J, the radius
of the crank j being equal to half the chord of the arc described by the crank i so
that the latter will be moved through an arc of 90 degrees at each half revolution
of the shaft J. Stops 2, or a spring jumper i³, or some similar contrivance may be
employed to ensure accuracy of the angular movement of the guide I. The shaft J
receives its motion of half a revolution at each opening movement of dies B and
jaws C through the agency of a ratchet wheel K fast on the shaft and having only
two teeth, these being placed diametrically opposite to one another. One or other
of said teeth is engaged by a pawl k carried by a pinion k', loose on shaft J and in
gear with a sliding rack bar L having a tappet roller L', which at each upstroke
of the lever G is raised by a tappet L', carried by lever G. On the downstroke of
the lever G and rack bar L the pinion and pawl turn idly. The downstroke of the
lever G is utilized to ensure the descent, at the proper time, of the rack bar L by
a pin g², carried by the former being arranged so as to strike in its descent against
a suitable projection, as I, upon the latter. The lever G if operated from the main
shaft might be driven by a cam or by a crank pin working in a slotted link of bent
or curved form so as to give the pause to the lever G at the lower end of its stroke
necessary to allow the dies B and jaws C to remain in the closed position whilst the
punch is in operation.
The punch operating shaft M (Figure 14) is actuated through the medium of
an automatic stop motion consisting of a clutch N, N', which is disengaged after
ench ascent of the punch by the action of a cam O formed on the sliding member N

page_text: of the clutch and acting on a friction roller o carried by a bolt o', as an abutment
whereby to force the sliding member out of engagement and put a spring or
springs P into compression for throwing the clutch into gear again. The clutch
is retained in the disengaged position by the bolt o¹, and its release therefrom is
made (through the interposition of suitable co-ordinating mechanism) to be
dependent on the completion of the downstroke of the lever G or other organ by
which the forward movement of the cams E is produced, so that in the event of a
punching of metal accidentally preventing the closing of the dies B and jaws C
the clutch will not throw the punch operating mechanism into gear for repeating
the stroke of the punch. The form of co-ordinating mechanism shewn consists of
levers Q and Q, (Figure 14) coupled together by the rod one arm of lever
receiving motion from the lever G through the rod q¹, whilst lever Q', imparts
motion in the required direction to the bolt o'.
In Figure 14 the lever G is shewn operated by a handle q², or pedal q³,
alternatively but in the case of a machine wherein lever G is operated from the
main shaft it would be advisable, in order to prevent injury to the dies and jaws
when fouled by a punching, that a clutch-like coupling should be interposed in the
length of the lever G or at any suitable point between the main shaft and said
lever, said coupling being spring-controlled and so rigid as not to yield under the
ordinary working strain but capable of yielding under abnormal strain due to the
above mentioned cause, so as to avoid breakage.
It will be obvious that according to the arrangement described, the automatic
feed mechanism cannot come into action at the commencement of work upon a
bar, that is to say not until so many consecutive punching operations have been
performed and the bar has been advanced so far through the dies B that the finger F
can engage as already described with the first formed of the interlink notches 1.
Up to this point the feed must be effected by hand. To ensure accuracy of pitch
whilst this is being done, a gauge collar R having a peripheral flanger is clamped
upon the bar A at such a point in the length of the latter that when the bar A is
adjusted so that its leading end is beneath the punches 6 but clear of the central
punch d, the flanger shall engage with the first of a series of notches s, s, formed
in the edge of a gauge bar S attached to the frame D and parallel to the bar A.
The pitch of the gauge notches s, s, corresponds to that of the chain, and between
each two consecutive punching operations the bar A is advanced, and with it the
gauge collar, the distance of one notch. As the flanger normally prevents any
longitudinal movement of the bar, the feed can only take place in the middle of
the operation of rotating the bar, that is to say when a gap ¹, Figure 13, left in
the flange, matches with the edge of the gauge bar S and thus admits of the
advancement of the gauge collar from one notch to the next during the temporary
interruption of the turning movement.
The operation of severing the bar into links may be performed by means of
obtuse-angled V-shaped wedge dies operated as described in the Specification of
former Letters Patent No. 4302 of 1893, and the subsequent operations of bringing
the links to a rounded section, and of compressing them latterally so as to bring
them to the narrow oval form required and at same time bring the two parts of
the stud or stay together may be performed by means of dies or swages, as
described in the Specification of previous Letters Patent No. 12109 of 1889.
I would have it understood that this invention so far as the machinery is
concerned is not in any way limited to the particular mechanisin described by
which the required movements of the punching, feeding, and turning devices are
produced but extends to all equivalent means of producing the same movements
in the required order for performing the same operations.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is :-
1. A machine for the manufacture of weldless stayed chains, whereby a cruciform

page_text: bar is brought to a rough chain-like but rigid form at a single passage of
the bar through the machine by the series of punching turning and feeding
operations described, performed on the bar in the manner and by means substan-
tially such as herein specified.
2. In a machine for making weldless stayed chains from a cruciform bar, the
combination in one holder of a pair of punches for interlink notching the webs,
two pairs of punches for punching out the bows of the link, a central punch
for punching out the centre or core portion, and a pair of punches for rounding
the ends of the links, all of the said punches acting at the same stroke and in
conjunction with corresponding bed dies, on different points of the bar, as and
for the purpose specified.
3. In a machine for making weldless stayed chains the combination, with a
set of punches combined as described, of a pair of bed dies adapted to support
the cruciform bar under the punching operation and separable to permit of the
turning and feeding motions of the bar, as specified.
4. In a machine for making weldless stayed chains the combination, with a
set of punches combined as described, of a pair of separable bed dies adapted
to support the cruciform bar as described and provided with separable holding
down jaws adapted to hold down the bar during the rising movement of the punches,
as specified.
5. In a machine for making weldless stayed chains, the combination, with a set
of punches combined as described, of a pair of combined sliding bed dies and
holding down jaws adapted to be opened and closed to receive and support a
cruciform bar, as described, and of a pair of oppositely inclined cam bars recipro-
cated together as one and acting on said bed dies in order to impart to said dies
and jaws their opening and closing movement, substantially as specified.
6. In a machine for making weldless stayed chains the combination, with a pair
of separable bed dies and with the reciprocating cam bars and lever mechanism
for operating the same, of a rotatable guide for turning the bar about its own axis
and of crank, ratchet, and rack mechanism substantially as described actuated by
the cam operating lever on its return stroke, whereby the said guide receives a
quarter revolution concurrently with and just before the completion of the opening
movement of the bed dies, as described.
7. In a machine for making weldless stayed chains the combination, with a pair
of separable bed dies and with the reciprocating cam bars and lever mechanism for
operating the same, of an automatic feed device consisting of a finger reciprocating
with the cam bars and adapted to engage with the notched bar during the forward
or jaw-closing movement of said cam bars and to disengage therefrom during their
reverse movement as described.
Dated this 31st day of October 1805
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.