Improvements in Machines for Turning Buttons.
Year: 1893

page_text: Date of Application, 18th May, 1893-Accepted, 8th July, 1893
COMPLETE SPECIFICATION.
Improvements in Machines for Turning Buttons.
1, GEORGE FREDERICK REDFERN, of the Firm of G. F. Redfern & Co., The
General Patent Office, No. 4, South Street, Finsbury, in the County of London,
Patent Agents, do hereby declare the nature of this invention (a communication
to me by Dilman Brubacher Shantz, of the town of Berlin, in the County of
Waterloo, in the Province of Ontario, Canada, Manufacturer) 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 improvements in machines for turning buttons and similar
articles and the object of the invention is first to provide mechanism whereby the
tools may be made to operate upon the blank so as to quickly turn both the back
and front of the button into shape and then much more gradually operate upon the
partially finished button so as to turn it out perfectly finished-secondly-to provide
a means whereby each jaw on the intermittently revolving disc which holds the
blanks may be forced open so as to drop the remnant of the blank after the turning
of the button and held open so as to give time for the placing and gripping of the
blank between the jaws during the period that the cutters are operating upon the
preceding blank-thirdly-to provide mechanism whereby the jaws will not only
hold the blank securely during the period that it is moving into position but further
will retain the jaws upon blanks so as to withstand the action of the cutter and
prevent it from throwing the blank out of position in the jaws during the period
that the button is being turned-fourthly-to provide an adjustable shield whereby
the button when completed may be prevented from being thrown against the
opposite cutter and having the front surface of the button defaced-fifthly-to
provide a simple means for rotating the disc containing the jaws as stated at
regular intervals so as to bring the jaws opposite the cutters and-sixthly-to
provide a means whereby the disc may be held perfectly rigid during the period
that the cutters are operating to turn the button and it consists essentially-first-of
connecting the ends of the cutter spindles to levers which are pivoted at the top
of the frame of the machine and are reciprocally adjustable during the revolution
of the spindles by cams of peculiar construction which operate within a cage
connected to the lower end of the levers-secondly-of providing a pin on the
inner end of the spring jaws, which pin extends through the disc upon which the
jaws are pivoted and comes against and is designed to travel upwardly against
the inner face of a spring arm so as to hold the jaws open until released by the
operator-thirdly-of forming the adjustable pivoted half of the jaw in two parts
and providing a spring to normally hold the two parts of the one half against the
other half and further in providing a split plunger each half of which is connected
to a pivoted lever which is held by springs at its bottom end so that each half of
the split plunger will maintain an equal pressure against its corresponding part of
the adjustable half of the jaw and thereby ensure a blank of unequal thickness
being held securely between the jaws and also in providing a plunger which is
supported in bearings and is operated by a cam secured on one end of the main
arbors so as to come against the lower arms of the levers and tilt them on their
pivot so as to remove the split plungers from their contact with the two parts of
the adjustable half of the jaw when the button is finished and thereby allow of the
disc rotating-fourthly-of a shield pivoted on the end of an arm which is con-
nected by a rod to the top of the cage within which one set of the main cams
work-fifthly of providing a ratchet pinion on the end of the main disc spindle
which ratchet has a corresponding number of teeth to the open jaws within which

page_text: the blank is held and is operated by a pawl from a grooved cam on one of the main
arbors and-sixthly-of cutting notches in the main disc corresponding in number
to the number of jaws and providing a dog which is brought at certain intervals by
a cam into the notch and held there by a spring behind the dog, the whole being
arranged and constructed in detail as hereinafter more particularly explained.
Fig. 1, is a perspective view of my machine portion of the disc being broken
away.
Fig. 2, is a perspective view from the opposite side of the machine.
Fig. 3, is a skeleton view showing the means of driving the disc wheel, operating
the split plunger, and the dog for holding the disc wheel stationary.
Figs. 4 and 5, are details of blanks.
In the drawings like letters of reference indicate corresponding parts in each
figure.
A, is the main driving shaft which is supported in bearings in the frame of the
machine and has worms B, B', secured to it, which nesh with worm-gears, C, C₁,
secured on the ends of the arbors, D, D', which extend across the machine at right
angles to the shaft, A, and are supported in bearings in the frame, E. F, is one
cutter spindle and, G, the other. The cutter spindles F, and, G, are provided with
pulleys, F, and, G', and cutters f, and, g, at the ends of the spindles, F, and, G,
respectively. The spindles, F, and, G, derive a rotary motion from belts which
pass around the pulleys, F', and, G', respectively and are journalled in the frame
of the machine as shown.
H, and, H', are levers pivoted on the heads of the screws, h, and, h', which are
adjustably secured in the standards, e, and, e', by jam-nuts, h". I, and, I', are
spring arms secured to the top of the lever, H, and extending partially across the
machine in the form shown. The free ends of the arms, I, and, 1', are connected by
the spiral springs, i, and, i¹, to the cross rod, J, which extends between the
standards, e, and, e'. j, and, j', are brackets secured at the centre portion of
the levers H, and, H', and having the forked bent end as shown. The bent ends
of the brackets, j, and, j', extend into annular grooves, 1, and, gl, made in the end
of the cutter spindles, F, and, G, respectively.
K, is the cam secured on the front of the arbor D.
the direction indicated by arrow and carries with it
having a screw spindle, l, extending from its outer end
pivoted in the lower end of the lever, H.
The arbor, D, revolves in
the cam, K. L, is a cage
through the trunnion, M,
N, and, O, are jam nuts situated one at each side of the trunnion, M, and designed
to adjust the screw spindle in relation to the lever, H. The trunnion, M, permits
of the free horizontal movement of the cage, L. The inner end of the cage, L,
has a supporting link, P, which is connected at the top by the screw pin, p, and at
the bottom by the pivot pin, q, which permit of the forward and backward move-
ment of the cage, L. Q, is a supplemental cam arm pivoted at, r, on the frame of
the machine and extending up into the cage, L. The cam, Q, is provided with a
portion, R, concentric to the centre revolution of the arbor, D. k, indicates a
series of rollers situated on the cam, K. The curved line passing through the
centre of these rollers is concentric to the centre revolution of the arbor, D. The
rollers, k, are designed to come in contact with the concentric portion of the cam
arm, Q.
As the rollers pass the concentric portion, R, and the roller, 2, passes over the
concentric portion 3, the cage is held perfectly steady. When the last roller, k,
has passed the concentric portion, R, it rises upon and follows the curved portion, R.
The portion, 4, of the cam, K, at the same time presses against the roller, 2, and
causes the cage to move in the opposite direction to that indicated by arrow and
throws the cutter spindle, F, in the direction indicated by arrow. The curved
portion, R', is so arranged in relation to the cam, 4, that the distance between the
last roller, k, on the cam, K, and the outside edge of the portion of the cam, 4,
pressing upon the roller, 2, exactly fills up the space between the roller, 2, and the
curved portion, R', during the period that the roller, k, is ascending the curved

page_text: portion, R¹. When the last roller k, has left the curved portion, R¹, the eccentric
portion from, 4, to, 5, which is an eccentric of very slightly increasing radii
operates upon the roller, 2, so as to very gradually force the cage and consequently
the cutter spindle forward thereby very slowly turning off the face of the button
so as to leave a perfect finish on it. A concentric collar, 3, during this period is
passing the minor concentric portion, R", so as to hold the cage rigid in relation to
the movement of the lever, H. When the point, 5, has been passed the spring, i,
at the top of the arm, I, operates so as to bring the roller, 2, on the cage in the
direction indicated by arrow along the portion from, 5, to, 6, thereby causing the
cutter to recede from the face of the button after it has finished it. During
the period that the roller, 2, is passing along the portion from, 5, to, 6, the first
roller, k, is approaching the point beneath the concentric portion R, and rises and
passes along the concentric portion R, thus holding the cage perfectly steady. As
the roller, 2, passes along the portion from, 5, to, 6, it will of course be understood
that the cutter spindle is caused to move in the opposite direction to that indicated
by arrow and thereby withdraw the cutter from the face of the button.
K', is a cam secured on the outer end of the arbor, D'. The arbor, D', and
cam, K, move in the direction indicated by arrow. The cam, K', is made upon
larger radii then the cam, K, so, that the cutter, g, is brought up to the blank more
quickly than the cutter, f, and cuts more rapidly upon the back of the blank,
consequently the cutter, g, will start to operate upon the blank before the cutter, f.
Q', is a cam arm pivoted at, r, and extending up into the cage, L', as shown.
k, are rollers made on the face of the cam, K., is a screw spindle attached to
or forming part of the cage, L, and extending through the trunnion, M', in the end
of the lever, H. N', and, O', are jam nuts situated on the screw spindle one on
each side of the trunnion, M. The cage, L', is supported at its inner end by the
link P, which is pivoted at the top on the screw pin, p', and connected at the
bottom to the cage, L', by the pivot pin, q'.
The portion, 7, of the cam, K', starts to operate or press upon the roller, 8, at
the same time that the portion, 4, of the cam, K, starts to operate upon the roller, 2,
but as the cam, K', is of larger radii than the cam, K, it moves the cutter, y,
forward more quickly than the cutter, f. As the cam continues to revolve the
eccentric portion, 7, of very rapidly increasing radii causes the cutter, g, to move
forward much more quickly than the cutter, f. During the first portion of the
period that the portion, 7, of the cam, K', is acting upon the roller so as to throw
the cage, L', in the direction indicated by arrow the last roller, k¹, passes up the
curved upper portion, R, of the cam arm, Q', thus holding the cage rigid in its
relation to the movement of the lever, H'. When the last roller, ', has passed the
top point of the cam arm, Q', the portion R', comes in contact with the concentric
hub of the cam thereby also continuing to hold the cage rigid in relation to the
lever, H', until the leading roller, k', reaches the position shown in the drawing
when it mounts upon the then concentric portion, R³, which still continues to hold
the cage rigid as to its relation to the lever, H. This rigidity is maintained until
the last roller passes over the concentric portion, R, and curved upper portions, R*,
and, R3, and in fact throughout the whole movement of the cam.
I should mention that when the point, 9, of the cam, K', passes the roller, 8, the
cage is thrown in the opposite direction to that indicated by arrow by the spiral
spring, i, a steady movement being maintained by the cam arm, Q', as hereinbefore
described.
It will be seen from what has been before described that the cams, Q, and, Q¹,
are designed to keep the cages, L, and, L', rigid in relation to the movement of
their levers, H, and, H', which control the backward and forward movement of the
cutters. They might, however, be dispensed with but I find in practice that it is
preferable to provide these cam arms as the movement of the cutters both as they
move forward to the blank and leave the finished button is very steady and
consequently neither the face or back of the button will be defaced.
It will be seen on reference to the length of the operative cam, K¹, in relation to

page_text: the length of the operative part of the cam, K, that the cutter, g, will continue to
move forward for a considerable longer period than the cutter, f, the cam, K, being
so arranged that the cutter,, will recede after having finished the face of the
button while the cutter, g, is still moving forward to finish the back and sever the
button from the blank.
These forward and backward movements of the cutters, f, and, g, are regulated
to take place when the disc is brought around so as to present the open jaws
opposite the cutters.
The mechanism by which the disc is caused to revolve intermittently so as to
bring the open jaws opposite the cutters and hold the disc steady I shall now
describe. S, is the disc which is secured on the end of the counter shaft, s,
journalled on the frame of the machine. In the disc shown in the drawing there
are four notches, t. s, is a ratchet wheel secured on the opposite side of the
counter shaft, s, and, s, is a pawl pivoted on the arm, T, which is loosely journalled
on the end of the counter shaft, s. T', is a link connecting the arm, T, to the
arm, U, secured on the rocking spindle, u. U₁, is an arm secured at the opposite
end of the rocking spindle, u, and having a pin, u', which extends into a cam
groove, u, in the collar, U", secured to the arbor, D. The rocking spindle, u, is
journalled in suitable bearings in the interior of the frame of the machine.
It will now be understood that every revolution of the worm wheel, C, arbor, D,
and cam, K, with the cam groove, u, will cause the spindle, u, to rock and bring
the pawl in the direction indicated by arrow so as to cause the ratchet pinion to
move around in the direction indicated by arrow the space of one tooth, this
distance being regulated by the cam groove, u". The off-set in the cam groove, ull,
is so arranged in relation to the cam, K, that it will operate to turn the disc, S,
only during the period that the cage, L, lever, H, and cutter spindle, F, are held
stationary and consequently the cutter, /, is held away from the face of the blank.
When the cam is operating so as to move the cutter backward and forward the
pin, u, at the end of the arm, U, travels in the straight portion, u. It will
consequently be seen that the disc, S, will always be held stationary during the
period that the cutters are operating upon the blanks so as to turn and finish the
button.
In order to provide a means which will hold the disc, S, perfectly rigid I provide
a stop arm, V, which has a tooth, w, formed on the upper end which is designed to
fit into the notch, t, in the disc, S. W, is a spiral spring which is located behind
the stop arm, V, and is designed to hold the tooth, v, into the notch, t. In order to
provide means whereby the tooth, r, may be removed from the notch, t, when the
button has been completed and fallen out I provide the following mechanism. The
stop arm, V, is secured on the end of the rocking spindle, w, which is journalled
suitably in the interior of the machine. X, is an arm secured on the other end of
the rocking spindle, w, and having a pin, x, which fits the cam groove, a¹, made in
the collar, X', secured to the arbor, D'.
When the cutters have completed the button and it has fallen out the pin, x,
reaches the off-set in the cam-groove, u", and rocks the stop arm, V, so as to
withdraw it from the notch, t. The cam groove, u", is so arranged that it will
operate on the pin, u', of the arm, U¹, so as to bring the disc around to the next
notch when the spring, W, will force the tooth, v, into the succeeding notch, t.
This operation will take place after each button is completed.
I shall now describe the pivoted jaws and the means for holding them open and
closed. Y, are stationary portions of the jaws for holding the blank which jaws
are secured in circular holes made in the disc, S. y, y', are the two portions of the
jaws which are pivoted at the centre or hub portion of the disc as shown and are
held normally against the stationary portion, Y, of the jaws by the spring, z.
, are pins which are located behind the pivoted portion, y, y'. Z, is a stationary
cam guide provided at the top with a handle ". When the disc, S, is caused to
revolve as herein before described the pin, ', comes in contact with the lower
portion of the stationary cam guide, Z, and travels along it. When the pin, ',

page_text: comes in contact with the cam guide it is forced inwardly so as to throw the
jaws, y, y', away from the stationary jaw, Y. The jaws now will travel around
open until they reach the upper portion of the cam guide, Z, at which period the
disc, S, is caused to stop and is secured in position by the stop arm, V. It will
now be seen that the jaws Y, and, y, y¹, will remain apart during the period that
the cutters, f, and, 9, are operating upon the preceding blank thus giving the
operator plenty of time to place the blank between the jaws, Y, and, y, y¹.
When the operator inserts the blank between the jaws, Y, and, y, y', he pulls
down the handle, ", which as the cam guide is made of spring metal allows of
it being withdrawn from behind the pin, 1, and the spring, z, connected to the
When
jaws, y, y¹, force the said jaws inwardly so as to securely grip the blank.
the cutters have turned out their preceding button the stop arm is withdrawn from
contact with the notch, t, in the disc, S, which is again caused to revolve bringing
with it the next succeeding jaws, Y, and, y, y', with the blank held between them.
When it has been brought around opposite the cutters the tooth of the stop arm is
caused as hereinbefore described to drop in the notch, t, and thus hold the disc
stationary. Each succeeding blank is inserted, held and comes up into position in
the same manner.
I may here state that the one half of the jaws are made in two parts, y, y', so
that they may with greater facility hold a blank of unequal thickness and in order
to provide an absolutely secure way of holding the jaws, y, y', against the blank of
unequal thickness I provide the split plunger, 10, which is made in two parts, 11,
and, 12. The split plunger is supported in the socket, 13, and is cut away on each
side at, 14, as shown. 15, are two levers which are placed close together and are
pivoted on the pin, 16, in the bracket, 13', forming part of the frame of the machine.
The top end of each lever extends one at each side of the split plunger, 10, into
the notch, 14. The lower ends of the levers, 15, are connected by strong spiral
springs, 17, to any suitable portion of the machine as indicated in Fig. 3. 18, is
a plunger supported in suitable bearings in the interior portion of the frame of the
machine. 19, is the head of the plunger which is of a diameter greater from
outside to outside of the edges of the two levers, 15.
20, is an annular groove
made at the other end of the plunger, 18, and 21, is a rocking arm pivoted on
the arbor, D, provided with a friction roller, 22, at its upper end and an
extension, 23, which fits into the annular groove, 20. 24, is a cam projection
formed on the collar, 25. The projection, 24, forces the rocking arm and con-
sequently the plunger in the direction indicated by arrow upon every revolution of
the arbor, D', so that the lower portion of the lever is pressed in the direction
indicated by arrow and withdraws the split plunger from contact with the
portion, y, y', of the pivoted jaw immediately upon the button being completed.
As soon as the jaws are again brought up into position opposite the plungers in the
manner hereinbefore described the split plunger, 10, is again thrown against the
portion, y. y', so as to hold the blank securely in position during the period that
the cutters are operating upon the blank.
In order to provide a means whereby the face of the button may be protected
from being defaced after it has been finished and ejected through the hole, Y¹, I
provide a shield, 26, made preferably of very thin metal which is secured on the
ends of the pivot arms, 27. 28, is an extension arm forming part of the pivoted
arms, 27, and connected by the rod, 29, to the arm, 30, secured to the link, P.
It will now be seen that upon the lower end of the lever being thrown back by
the cam and consequently the cutter withdrawn that the shield, 26, will assume
the position shown in the drawing before the cutter so that the button will be
thrown against it and fall out without any danger of its coming in contact with the
cutter. Normally the shield is held up from between the cutter, f. and the disc, S,
but upon the face of every button being completed it will be thrown down into
the position shown so that when the cutter, g, is finishing the back it will force
the button out so that it will strike the shield and fall down without it being
defaced.

page_text: In order to provide a means whereby the disc may be prevented from vibrating
in the slightest degree while the cutters are operating upon the blank between the
jaws I provide a shoulder, 31, which is secured so that its end will rest against
the opposite side of the disc to that on which the split plungers are held against
the adjustable jaws.
Is will understood from the description that each button is finished at the back
and front practically simultaneously. It will also be understood that on account
of the graduated longitudinal movement of the cutters, f, g, regulated by the
cams, K, K' that the face and back of each button will be perfectly finished.
It will also be understood that heretofore in machines in which the pressure has
been maintained by a spring jaw alone it has been found that the blank has
frequently been partially misplaced and as a consequence the blank spoiled but by
providing the supplemental split plunger, 10, operated as described I find in
practice that I can maintain such a strong pressure upon the jaws that it is
impossible for the blanks to get misplaced.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination with the cutters, of the disc provided with stationary open
jaws and pivoted adjustable spring jaws and means whereby the jaws are opened
and then closed during the period that the cutters are operating upon the preceding
blank as and for the purpose specified.
2. The combination with the cutters, the stationary jaws and the pivoted adjust-
able spring jaws, of the plungers operated as described so as to securely hold the
blank as and for the purpose specified.
3. The combination with the disc provided with stationary open jaws and pivoted
adjustable spring jaws and means whereby the jaws are opened and then closed
during the period that the cutters are operating upon the preceding blank, of the
cutters and cutter spindles deriving a longitudinal intermittent reciprocating move-
ment through the levers operated from cams on one end of the main arbor which
have worm gears at their outer end driven from worms on the driving shaft as and
for the purpose specified.
4. The combination with the disc provided with stationary jaws and pivoted
adjustable spring jaws and plungers operating as specified, of the cutters and cutter
spindles deriving a longitudinal intermittent reciprocating movement through the
levers operated from cams on one end of the main arbor which have worm gears
at their outer end driven from worms on the driving shaft as and for the purpose
specified.
5. The combination with the cutters, the disc provided with stationary open
jaws and pivoted adjustable spring jaws and split plungers operated as described,
of the projecting shoulder 31, the end of which rests against the disc as and for the
purpose specified.
6. The combination with the cutters, of the disc secured on the end of the
spindle, s, and provided with stationary jaws and pivoted spring jaws which are
adjustable as described, of the ratchet pinion and pawl which receive an inter-
mittent motion from a cam on one of the main arbors so as to partially revolve the
disc at each forward movement of the pawl as and for the purpose specified.
7. The combination with the disc provided with stationary jaws and adjustable
spring jaws and the split plungers arranged to operate so as to hold the jaws
stationary during the period that the cutters are operating upon the blank, of the
spring stop arm the end of which is designed to fit into notches, t, in the disc as and
for the purpose specified.
8. In a button turning machine the combination with the main shaft A, provided
with the worms B, B¹, of the arbors D, D', provided with the worm gears C, C', at
one end meshing with the worms and at the other end with the cams K, K',
arranged to operate in connection with the levers H, H', and the cutter spindles F,

page_text: and G, connected to the levers H, H', respectively deriving a longitudinal
movement from the levers through their connection to the cams as and for the
purpose specified.
9. In a button turning machine the combination with the main shaft A, provided
with the worms B, B', of the arbors D, D', provided with the worm gears C, (, at
one end meshing with the worms and at the other end with the cams K, K',
arranged to operate in connection with the levers H, H', and the cutter spindles F,
and, G, connected to the levers H, H', respectively deriving a longitudinal
movement from the levers through their connection to the same and the pulleys F',
and, G, designed to rotate the cutters f, and, g, respectively as and for the purpose
specified.
10. The combination with the cutters f, and, g, deriving a rotary motion and
longitudinal intermittently reciprocating movement as specified, of the revolving
disc S, provided with open stationary jaws Y, the pivoted adjustable jaws y, y', the
springs, designed to normally hold the jaws y, y', against the stationary jaws Y,
the pin, located behind the jaws y, y', and extending through the disc S, and the
stationary cam designed to push the pin ¹, inwardly as and for the purpose
specified.
11. The combination with the cutters f, and, g, deriving a rotary motion and
longitudinal intermittently reciprocating movement as specified, of the revolving
disc S, provided with open stationary jaws Y, the pivoted adjustable jaws y, y', the
springs z, designed to normally hold the jaws y, y, against the stationary jaws Y,
the pin, located behind the jaws y, y', and extending through the disc S, and the
stationary cam designed to co-act with the pin ', and provided with a handle ", so
as to release the pin, as and for the purpose specified.
12. The combination with the cutters, and, y, deriving a rotary motion and
longitudinal intermittently reciprocating movement as specified, the intermittently
revolving disc S, provided with open stationary jaws Y, the pivoted adjustable
jaws y, y', the springs z, designed to normally hold the jaws y, y', against the
stationary jaws Y, of the split plunger 10, comprised of the parts 11, and 12, the
levers 15, the upper ends of which fit into notches 14, in the parts 11, and 12, and
the spiral springs 17, attached at one end to the lower ends of the levers 15, and at
the other end to a portion of the frame as and for the purpose specified.
13. The combination with the cutters f, and g, deriving a rotary motion and
longitudinal intermittently reciprocating movement as specified, the intermittently
revolving disc S, provided with open stationary jaws y, y', the springs z, designed
to normally hold the jaws y, y', against the stationary jaws Y, of the split
plunger 10, comprised of the parts 11, and 12, the levers 15, the upper ends of
which fit into notches 14, in the parts 11, and 12, the spiral springs 17, attached at
one end to the lower ends of the levers 15, and at the other end to a portion of the
frame, the plunger 18, connected at the top to the rocking arm 21, on the
arbor D, and the cam projection 24, on the arbor D', designed to come in contact
with the friction roller 22, at the top of the arm 21, as and for the purpose
specified.
14. The combination with the cutters f, and, g, of the disc S, provided with the
open jaws Y, and y, y', and secured on the end of the counter shaft s, the ratchet
pinions, secured on the opposite end of the counter shaft s, and the pawl s", pivoted
on the loose arm T, and driven intermittently through the link T₁, arm U, on the
one end of the spindle u, and arm U₁, at the other end provided with the pin u¹,
fitting into a cam groove u¹¹, made in the collar U", secured on the arbor D, as and
for the purpose specified.
15. The combination with the disc S, driven as specified, and having notches t,
cut in its periphery of the stop arm V, secured on the one end of the rocking
spindle w, and having the spiral spring W, located behind it as and for the purpose
specified.
16. The combination with the disc, S, driven as specified, and having notches t,
cut in its periphery, of the stop arm V, secured at one end of the rocking spindle w,

page_text: the arm X, located at the other end of the rocking spindle w, and having a pin a,
which fits into the cam groove x', formed in the collar X, secured to the arbor D,
as and for the purpose specified.
17. The combination with the cutters f, located on the inner end of the cutter
spindle F, and driven as specified, of the lever H, pivoted at the upper end of the
standard e, connected to the end of the cutter spindle F, by the forked bracket į,
extending into the annular groove f¹, and having at the top the curved arm I,
connected to the cross rod J, by the spiral spring i, and at the bottom the cage L,
connected by the screw spindle 7, to the pivoted trunnion M, in the lower end of
the lever H, the cage L, being adjustably supported at its inner end and provided
with the roller 2, which is designed to co-act with the cam K, on the arbor D, as
and for the purpose specified.
9,
18. The combination with the cutters and cutter spindles f, and F, and
and G,
of the levers H, H', connected at the top by the arms I, I', and spiral springs i, i,
to the cross rod J, and at the bottom to the cages L, L', by the screw spindles i, 1,
and pivoted trunnions M, M', the links P, P¹, supporting the inner end of the
cages L, L', and the rollers 2, and, 8, journalled at the inner end of the cages L, L',
of the cams K, K', constructed as specified, and having the face rollers k, k', and
the cam arms Q, Q, pivoted at r, r, and having the curved portion R, R, and R',
and R³, R, R, arranged to co-act with the rollers k, k', respectively as and for the
purpose specified.
19. The levers H, and, H¹, connected to the end of the cutter spindles F, and G,
as specified, and pivoted at the top on the adjustable screw spindles h, hand at the
bottom by the adjustable screw spindles 1, 1, running through the trunnions M, M¹,
to the cages L, L', provided with the rollers 2, and, 8, designed to co-act with the
cams K, and, K', respectively as and for the purpose specified.
20. The combination with the lever H, pivoted at the top of the standard e, and
connected to the end of the screw spindle h, as specified, of the shield 26, pivotally
connected to the end of the arms 27, which are pivoted on the rod 28, which has an
arm by which it is connected by the rod 29, to the link P, supporting the cage L,
which derives a forward and backward movement from the lever H, as and for the
purpose specified.
Dated the 18th day of Mar 1893
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.