Improvements in Button Setting Machines.
Year: 1888

page_text: Date of Application, 16th Apr., 1883
Specification Accepted, 18th May, 1888
Improvements in Button Setting Machines.
1; FRANCIS HENRY RICHARDS, of Main Street, Hartford, in the County of Hartford,
and State of Connecticut, United States of America, Mechanical Engineer, do hereby
declare the nature of. my said invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
In the drawings accompanying and forming a part of this specification, Fig. 1 is a
front elevation of a button setting machine embodying my improvements. Fig. 2 is
a side elevation of the same, as seen from the right-hand in Fig. 1. Fig. 3 is a
vertical sectional side elevation of the machine with the various parts thereof in the
same positions as in Fig. 1. Figs. 4 and 5 are enlarged front elevations of that part
of the machine carrying the button feeding mechanism, and show said mechanism in
two different positions. Fig. 6 is a vertical section of the feed wheel and setting die.
Fig. 7 is a vertical section through the feed wheel and die, taken at 90 degrees from
the section line in Fig. 6, and corresponding to a part of Fig. 3. Figs. 8, 9, 10
and 11 show the construction and illustrate the operation of the indicator when con-
structed to be automatically withdrawn prior to setting the button. Figs. 12 and 13
show the construction and illustrate the operation of a simpler form of indicator.
Fig. 14 is a vertical section of a part of Fig. 2 in line a a, showing a means for
removably holding in place the button reservoir. Fig. 15 shows a portion of the
driving mechanism in Fig. 3, but with the parts in a different position. Fig. 16
illustrates an alternate construction of the connecting rod 49, Fig. 3. Figs. 17 and 18-
are front views of the feed-wheel and chute, showing the manner in which the
buttons are delivered from the chute to said wheel. Figs. 19 to 23, inclusive, are
views showing successive stages of the operation of setting a fastener. Fig. 24 is a
horizontal section across the machine at about the height of rock-shaft R. Figs. 25
and 26 are enlarged front and side views, respectively, of a part of the feed-wheel.
Fig. 27 is a top view of the magazine, with the tube 147 shown in section. Fig. 28
is a plan view of the front (left-hand) end of said magazine. Fig. 29 is a front view
of the parts shown in Fig. 28. Fig. 30 is a section in line ff, Fig. 27. Fig. 31 i
an enlarged section of the principal part of the magazine, showing a button-fastene
in place in the groove thereof. Fig. 32 is a detail drawing of the detent latch.

page_text: Similar characters designate like parts in all the figures.
The frame of the machine designated, in a general way by A, consists or inay
consist of a hollow casting, substantially as shown, adapted to carry the several parts
of the respective mechanisms. Said frame has bearings for a vertical presser slide S,
for the magazine M, and for the rock shaft R: it is also constructed to rigidly hold
the frame or head, H, of the button-feeding apparatus, which head serves also to carry
the die block B. Or, the concave setting-die may be formed in the head H, if this be
made of suitable material.
The presser slide S is grooved on its rear face to receive the driver D, which is
usually made of tempered steel. The upper end of said slide is formed to receive the
cap E, whose back cross-bar, 44, forms the rearward wall of the driver channel 4, in
which channel the driver has a vertical movement. Said slide has its lower bearing
on the stud P, fixed in the frame A, and is depressed by the driver D.
The driver D is formed at its upper end to pass through the usual driver channel,
as 4, and may be operated by any suitable means, as the teeth of gear G engaging
with the teeth of rack V, which is fixed on the driver. Said driver, or the rack V
thereof, is shaped at its lower end, as at 20, to strike and rest on stud P as a stop
therefor. Power is or may be applied to the oscillating segment G through a con-
necting rod from an ordinary treadle mechanisin but I have shown an improved
automatic mechanism for operating said segment.
This mechanism consists of a shaft 45 on which is fixed the crank 47 and on which
pulley 46 turns freely, to which pulley power is applied by the usual belt 135. Power
is communicated from the pulley to the shaft by means of the clutch mechanism
shown in Figs. 1, 3 and 15, which consists of a dog or collar 87 fixed to shaft 45; a
clutch-arm 110 pivoted at, 136 between cars 88 and 89 of said dog, and whose outer
end is constructed to engage with the socket 140 of the arm 56 of oscillating clutch
lever L. Said lever L is actuated by a treadle (not shown) through the rod 82 that
is connected to arm 57 thereof. Lever L is returned from the dotted position shown
at 119 Fig. 3 to its normal position there shown in solid lines, by some suitable
spring, 59, and may be limited in its movement by a stop screw, 60, coming in contact
with post 83 of base J. The connecting rod Q is provided with the following means
for adjusting its length. The parts 49 and 50 thereof are joined together outside of a
direct line between the centers 48 and 116, as at 52. The part 50 is provided with
an adjusting screw 53 and check-nut 54 by which the distance between the centers 48
and 116 may be increased or diminished. The screw 53 is held against the foot of
part 49 by a stout spring 58, and power is communicated to the driver D' through
said spring. The presence of an imperfect fastener in the driver-channel, or of any
other similar obstruction, will cause said spring to yield, thus avoiding any undue
strains or liability to breakage. In Fig. 16 the part 50 of connecting rod is con-
structed to allow the part 49 to pass through it. Adjustment between the points 48
and 116 is made by means of the nuts 116 and 117 turning upon a threaded portion
of part 49. Said nuts are held in contact with the upper part of 50 by the spring 58
and nut 115.
:
The presser slide S is moved up by the driver acting through some spring suitably
arranged therefor.
A preferred construction and arrangement of this feature is as
follows: The slide is formed hollow, to receive the push-spring 18, and the sliding
plug 19 and has a stop-screw, 17, whose point stands in a groove, 16, formed in said
plug 19. On the upward movement of the driver, its projecting part 20, strikes the
lower end of plug 19, which pushes up on spring 18, and thus lifts the slide S up
against the button carrier, or against the fabric or material laid thereunder. In
practice these several parts should be so proportioned and adjusted that the driver
carries a fastener about to the top of the driver channel, before the slide is lifted.
Fixed in or to the upper part of the frame A there is a head or bracket, EI, to
which the die block B, is attached, and which is provided with a stud, 30, for carrying
the feed-wheel. This die block has formed therein the usual concave setting-dic, 22,
whose position is immediately over the driver channel 4.
For presenting the buttons to the setting die in proper position to be attached to

page_text: "
the fabric, employ the revolving carrier or feed-wheel F. This carrier consists or
may consist of a disk 15, provided with teeth, 23, and having a hub, 26, provided
with a ratchet 27. Said disk serves also, as a stop plate to prevent the buttons being.
pushed up too far by the fabric on the presser slide, during the operation of the
machine. Upon the rearward face of carrier F, there is a flange or guide N, which
lies close to and extends under the lower side of the die B. In this flange or rim
there are formed suitable spaces, openings, or pockets, as 24, for receiving the shanks
of buttons whose heads lie in the pockets 25, that are formed in disk 15, between the
teeth 23; which teeth in the preferred form of wheel F, extend outside of rim N.
By this means the button-shanks are carried to position under, and away from the
setting die, in a very regular and certain manner. At one side of space 24, there is a
lateral cut or slot, 14, through which the fastener point passes after it turns downward,
during the setting operation. Without the cut 14, it would be necessary for the
opening 24 to be wider on that side this is found objectionable, because taking away
to some extent the guide for the button shank or oye, and also because such enlarge-
ment would allow the leather or fabric to be pushed up therein, so the point of the
fastener could re-enter the same. On its rear edge, the rim N has some suitable
detent notches, as 33, formed therein, and an ordinary detent spring, 34, Fig. 1, is.
constructed and arranged to bear in said notches, for properly holding the wheel Fin
place, during the fastener-setting operation.
The conically-formed button reservoir K, is supported on a bracket W, on the main
frame, and has the usual front plate, 35, suitably secured thereto, by screws not fully
shown. The reservoir is provided with an ordinary button chute T, leading therefrom,
and within has the usual means (as the oscillating brush 68, provided with bunches of
bristles, 691, 69 or other device for like purposes) for directing the buttons into said
chute. This device may be carried or actuated by an oscillating shaft 67, extending
through the reservoir, and having a toothed segment 8 engaging with the toothed
segment 7, which latter is connected by a rod 71 to the arm 72 of the rock-shaft R.
By means of this or other ordinary arrangement of connections, the brush has or may
have imparted thereto a rotary-reciprocating movement corresponding to the vertically-
reciprocating movement of the driver D. The hopper being conil, as shown, the
movement of the brush in stirring up the buttons naturally drives them forward
toward the cover 35, after a well-known principle.
For the purpose of actuating the feed-wheel F, the following preferred arrange-
ment of connections may be employed: The shaft 6 having the segment 7 affixed to
its rear end carries on the front end thereof an arm 9, said arm having at its outer
extremity a cam-roll 10 working the cam-groove 11 of arm 64. The feed-wheel has
thereon suitable ratchet notches as 27, and the arm 64 pivotally supported in front of
said wheel carries pawl 28 which engages with said notches. By this means the
rotary-reciprocating movement thereof, of shaft 6 imparts an intermittent rotary
movement to the feed-wheel, in a well-known manner. The shape of groove 11 is
made suitable, substantially as shown, to modify the movement of arm 64 to properly.
conform in time to the movement of the driver and presser slide; for it is found that
the normal movement of said arm, when said groove is a straight one, does not so
conform.
The button chute T. (having the usual groove 74,) leads downward and laterally,
(unless the reservoir be located otherwise than as shown) and terminates adjacent to
the setting dies, in a curved part, 75, conforming to the button carrier described
above. In Fig. 4, this arrangement is the more clearly shown. The groove 74 is a
channel formed between the two ribs or sides, 76, 77, of the chute T. The rib 76
terminates adjacent to the upper part of frame H, leaving space enough at 78 for the
passage therein of the rim N of the button carrier F. The inner wall of space or
channel 75 is formed by the curved button guiding edge 61, of the die. part H. The
rib 77 extends further downward, and terminates in a curved guide or button-guiding
finger 79, which forms the outer wall of the curved space 75: which space should, in
practice, be wider than groove 74, so that a button shank may lie therein, outside of
the rim N. This arrangement is found to give the best results, and ordinarily avoids

page_text: the clogging of the feed wheel by slightly imperfect buttons. Usually, a short guard,
81, is formed on rib 77, at the point where the buttons are entering the feed wheel,
for the purpose of steadying the buttons and to assist in properly guiding their shanks
into spaces 24. A suitable guard or chute cover, 90, is provided and properly
arranged for holding the buttons, 91, 92, 93, from being thrown out of the chute.
Before arriving at position 95, in readiness for attaching to a fabric, the button is
carried by the feed wheel under a spring-guide, 96, which I ordinarily attach to the
machine by screws 97, This guide serves to retain the buttons in the feed wheel
at 94, and bears firmly on the button at 95. The particular manner in which such
bearing should be made, is well shown in Figs. 19, to 23, inclusive. The end of
spring 96 is here shown concaved, and arranged to bear backward and upward on the
head of button 95, below the center thereof, thereby holding the head up into
pocket 25, and the shank firmly up into space 24, and against the underside of the
setting. die B..
The operation of the feed wheel, as it engages the buttons in chute T, is best shown
in Figs. 17 and 18. The former Fig. shows the position of said wheel during the
operation of setting, a button-fastener, when the button 93 lies on the upper edge of
tooth 231, and button 92 lies on button 93. The wheel F being now turned forward
in the direction of the arrow, tooth 231 comes under button 92, and drives button 93
downward in groove 74, to position 94. And the said parts as here described are so
combined and arranged, that if this forward movement of wheel F shall be instan-
taneous, so that buttons 92 and 93 do not follow the downward movement of tooth 23¹;
the tooth 23 will still seize and carry down the button 93. This construction has a
peculiar utility in my present machine, inasmuch as the movement of wheel Fis
frequently so sudden that gravity cannot move down the buttons nearly so rapidly as
the movement of teeth 23. And said construction is such that a line (not shown)
drawn tangent to buttons 92, 93, will pass the point of tooth 2311 in Fig. 17; so that
the wheel F having been moved instantly the button 92 may pass by said tooth and
reach position 93 while the wheel is at rest. But it should be understood that this
feature here particularly described is not a necessary feature of all combinations
embracing the chute and feed wheel.
The button-chute groove 74, as will be seen in Figs. 4, and 5, leads out of the
reservoir K, at an angle, the wedge 98 lying between said groove and the circum-
ferential channel 99. By this arrangement, the brush 69 is the feeding brush, and
6911 are the retracting brushes.
In Figs. 2, 12, and 13 the operation of the indicator is illustrated. This device
consists of an arm 122 pivoted at 123 and normally held against stop pin 139 by the
usual flat spring 124. On said arm at 125 is pivoted an arm 120 which terminates
at 121 in a point directly under the setting die. The movement of arm 120 on stud 125
is limited by the pin 120 fixed in arm 123, and working in the hole or slot 127
in the lower end of arm 120. The operation of this device is as follows: The shoe
or fabric being properly marked to indicate the positions where the buttons are to be
set, the arm 120 is lifted from the position shown in Fig. 2 to that shown in Fig. 12
when the fabric is placed under point 121 thereof, one of the marks on said fabric
being made to coincide with said point. If, now, slide S be moved up, point 121 of
indicator Y will swing back and up, and out of the path of the fastener, to the
position shown in Fig. 13.
Figs. 8, 9, 10 and 11 illustrate an indicator arranged to operate automatically by
means of a pin 131, on arm 72, engaging with the depending end 130 of lever Y.
The arm 120 is here provided with a projection 133 which stops against arm 122.
The spring 132 is here shown as a spiral one laid about the hub of Y. When arm 72
moves down, forcing up slide S point 121 is moved back by pin 131 working on
cam 130, as shown in Fig. 10.
The flange N has at its rear edge an internal enlargement or rim, 32, which takes
its bearing on head H, (or on the die,) and serves to strengthen the said flange;
which flange is necessarily thin, and is much weakened by the cutting through it of
the button-receiving pockets. The die B fits about the stud 30, which holds said die

page_text: against the head H, and in engagement with the shoulder 31 thereof. This shoulder
then receives the pressure due to the upward thrust of the driver. The arm 64 has,
preferably, a hub 62 extending within wheel F, whereby sufficient steadiness is
secured without too close fitting; also, said arm rests against the die, and cannot
cramp the feed-wheel between it and 'the die. In practice this arrangement is found
to be of considerable importance.
The button-fastener magazine, M, is not shown in detail in the general views.
Different constructions of this part may be employed, if only it shall properly supply
the fasteners to the driver channel. The form of magazine which I prefer is shown
in Figs. 27 to 32 inclusive. In these Figs. M designates the principal part of the
magazine, or magazine proper. This has a groove G, in which the fasteners are
placed, being locked therein by the segmental tube 160, and driven forward by the
follower 161, that is actuated by spring 162. The front part of the magazine has. the
groove formed spirally therein to lead the fasteners, 168 to the under side and forward
end of the same. This end, shown at the left-hand in Figs. 27 and 28, is encased (for
convenience of construction) in a tube 147, (held in place by screw 180) and is pro-
vided, within said tube, with the detent latch 170, that is set obliquely, and turns on
pin 173. A spring, 174, contained in hole 175, serves to press forward the lower end
of said latch. When the fasteners are driven forward to the detent latch, and this
stands well projecting as in Fig. 28, the fasteners cannot pass, but are held back, as
indicated in Fig. 29. This feature permits the filled magazine to be taken from the
machine, for inspection or otherwise, without spilling out the fasteners.
magazine is replaced in the machine, the latch 170 is driven back by coming in
contact with the forward wall of the driver channel, and thus permits the passage of
fasteners into said channel.
When the
The preferred arrangement of shaft R is shown in Fig. 24. The frame A being
properly bored to receive cap 104, this cap is held in place by a screw 105. This
screw serves as a bearing for the hollow rock-shaft R, which is fixed rigidly in
lever G. The arm 72 of said shaft R reaches out through an opening, 106, to connect
with rod 71, as shown in Fig. 2. Usually, I make the shaft and its arm 72
integral.
The operation of the machine is as follows: The magazine M and the reservoir. K
being properly supplied, and buttons fed drawn in the chute to the setting die; and
the pulley 46 being set in motion in the direction shown by the arrow in Fig. 1, the
rod 82 is drawn down by any suitable means as by the treadle aforesaid, thus lifting
end 56 of lever Land liberating arm 110, which arm is moved laterally by pin 127
and spring 128; the car 112 being thereby engaged with notch 138 in the hub of.
pulley 46. Shaft 45 is thereby set in motion. Then, through the crank 47 connecting
rod and lever G, the usual vertical reciprocating movement is imparted to the
driver D. If the rod 82 be now released the lever L will be returned by spring 59
to its original position with stop screw 60 against post 83 and arm 110 will enter cam
way 113 of lever L as shown in Fig. 15, and continuing its rotation the ear 112 will
be withdrawn from notch 138 and shaft 45 will come to rest, with the end of arm 110
resting and locked in socket 140.
The particular operation of the button-setting devices, will appear more clearly by
reference to said Figs. 19 to 23. The driver D being forced up from its position in
Fig. 3, to the position shown in Fig. 19, the fastener 100 thus driven up into the
upper part of the driver channel. Continuing the upward movement of the driver,
the lug 20 thereof, acting through plug 19, compresses spring 18 and (during the
latter part of the upward stroke of the driver) carries up the presser slide against
the fabric 102, (previously placed under the feed-wheel and die) as in Fig. 20, and
afterward drives up and sets the fastener as in Fig. 21, with the fastener prong formed.
into a hook through the shauk of button 95. On now lowering the driver, as in
Fig. 22, the plug 19 is thrown down until stopped by screw 17, after which (during
the latter part of the downward stroke of the driver) the slide goes down as in
Figs. 19 and 23, while the driver itself moves further down to its original position.
During the upward stroke of the driver, the connections described move arm 64 from

page_text: its position in Fig. 5 to that in Fig. 4 and on lowering the driver, said arm is
carried back, thereby turning forward the feed wheel and feeding button 94 (Fig. 17)
to position 95, (Fig. 19). During this movement, the rim N, of wheel F, drags the
fastener prong out of the die.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. In a button-setting machine, a setting die, in combination with a button-carrier
in front of and extending under said die, said carrier having a button-receiving
pocket through which the button fastener prong can havo access to said die,
substantially as described.
2. In a button-setting machine, a setting-dic, in combination with a rotary button
carrier in front of and extending under said die, said carrier having a series of button
receiving pockets through which the fastener prongs can have access to said die,
substantially as described.
3. The combination in a button-setting machine, of a setting die, a rotary carrier
in front of and having a rim extending under said die and having one or more
button-receiving pockets, and the button chute leading to said die, said chute termi-
nating in a channel for the passage of said rim and the button shanks, substantially
as described.
4. The combination of the stationary setting die, and the wheel F having the rim N
extending under said die, said wheel having the button-head-receiving pockets 25,
and said rim having. the corresponding button-shank-receiving openings 24. through
which the button fastener prong has access to said die, substantially as described.
5. The feed-wheel F, consisting of a disk or plate, 15, the rim N, at one side of
said plate, the whole having the button-receiving pockets, all substantially as
described..
6. The feed wheel F, consisting of a disk or plate, 15, having the pockets 25, the
rim. N at one side of said plate, and having the. openings 24, and the cut or slot 14
extending laterally from said openings 24, substantially as described.
7. The feed wheel F, consisting of a disk or plate, 15, having the pockets 25, the
rim N at one side of said plate, and having the openings 24, the plate 15 between
said pockets 25, forming teeth that extend outside of rim N, substantially as shown
and described.
8. The combination of the setting die, having the rounded edge, 61, the feed-wheel
having a rim extending under said die, and the finger 79, forming the outer wall of
the space or channel 75, all substantially as described.
9. The combination and arrangement with the fixed setting dic, and the button
chute T leading to said die, of the intermittingly-moving feed-wheel F having
teeth 28 spaced as described, so that when the feed wheel is at rest holding one button
at the setting die, another button may in sliding down the chute pass the point of
tooth 231, and rest on tooth 23¹, all substantially as shown and described.
10. The combination with the setting die, and with the feed wheel having a rim
extending under said die, said wheel having button-receiving pockets substantially as
described, of the spring guide arranged in front of said wheel, and operating to hold
the button with its shank in the opening in said rim and against said die, all sub-
stantially as described.
11. The combination with the setting die, and with the feed wheel having a rim
extending under said die, and having bution-receiving pockets substantially as
described, of the button-guiding edge 61 within said wheel, the button-guiding
finger 79 outside of said wheel, and the button chate leading to said wheel and
terminating in the channel between said edge 61 and finger 79, substantially as
described.
12. The combination with the setting die, and with the feed wheel having a rim
extending under said die, and having button-receiving pockets substantially as

page_text: described, of the button-guiding edge 61 within said wheel, the button-guiding
finger 79 outside of said wheel and forming the outer wall of the channel 75, and the
spring-guide arranged to serve as a cover for said channel, and operating to hold a
button in the pocket of said wheel and with its shank against said die, all substantially
as described.
13. The combination with the setting die, and with the feed wheel having a rim
extending under said die, and having button-receiving pockets substantially as
described, of the movable presser-slide under said rim, said slide having a driver
channel in alignment with said die, and through which the fastener can be driven
up through the fabric and through the pocket in said rim into said die, all substantially
as described.
14. The combination with the setting die, and with the button carrier having a rim
extending under said die, and having button-receiving pockets substantially as
described, of the movable presser-slide under said rim, said slide having a driver
channel in alignment with said die, and the reciprocating driver in said channel,
operating to drive the fastener prong through the fabric and the pocket in said rim
into said die, all substantially as described.
15. The combination in a button setting machine, of the movable presser-slide, the
reciprocating driver, a yielding plunger, as 19, carried on said slide, a stop limiting
the downward stroke of, and a spring acting downward on, said plunger, all arranged
and operating substantially as described.
16. The combination in a machine of the class specified, of the stationary setting
die, a rotary button carrier having a rim extending under said die, and having button-
receiving pockets substantially as described, the movable presser-slide under said rim
and die, having a driver channel in alignment with said die, the reciprocating driver
in said channel, means (substantially such as described) operating said slide from the
driver during the latter part of the stroke of the driver, and connecting mechanism
operating the driver and carrier, whereby said carrier is moved forward during the
downward stroke of said slide, all substantially as described.
17. In a button-setting machine, the fixed setting die, the presser slide and driver,
a driving crank, and connections from said crank to the driver, having therein a
spring sustaining the work of setting the fastener, and arranged to yield on the driver
meeting obstruction all substantially as described.
18. In a button setting machine, the combination of the fixed setting die, the
driver, the driving crank, and connections actuating said driver from said crank, said
connections having therein a spring through which is transmitted the power for
setting the fastener, and having an adjustable stop for regulating the position of the
driver with respect to said die, all substantially as described.
19. In a button setting machine, the combination of the head H, the feed-wheel
having the rim 32, and the die B set on said head, and standing within said wheel
and rim, as set forth.
20. The combination with the feed-wheel F and the setting die, of the stud 30, and
the feed arm having a hub turning on said stud and within said feed-wheel, the hub
extending within said wheel to said die, all substantially as described.
21. The combination of head H, having shoulder 31, the die B engaging said
shoulder, stud 30, wheel F, and arm 64, substantially as set forth.
22. The combination with the feed-wheel and die, of the arm 64 fitted to turn said
wheel relative to said die, and the oscillating arm 9, said arm 64 having a cam-shaped
groove whereby the movement thereof by said arm 9 is timed to conform to the
movement of the driver and presser-slide, all substantially as described.
23. The combination in a machine of the class specified, of the feed-wheel actuated
by arm 64, shaft 6 having arm 9 actuating arm 64, the hopper having a chute leading
to said wheel, and having a rotary-reciprocating brush delivering buttons to said
chute, and gears 7 and 8, said hopper being removably attached to the machine, and
the whole organized and co-acting substantially as set forth, all substantially as
described.

page_text: 24. The combination of the hopper having the chute T, the cover 35, and the guard
pivotally attached at 42 to said cover, to swing laterally over said chute, substantially
as forth.
25. The combination with the presser-slide, of the indicator Y, as set forth.
26. The combination with presser-slide of the indicator Y, formed in two parts
pivoted together, substantially as set forth.
27. The combination with the presser-slide, of the indicator 120, lever 122, and a
cam operating said lever, all substantially as set forth.
28. The combination with the presser-slide of indicator arm 120 having stop 133,
lever 122, a cam whereby said lever is moved back, and a spring to throw the same
forward, all substantially as described.
29. The combination with the presser-slide and driver, of the shaft R actuating said
driver and having arm 72, the indicator pivoted substantially as described, said arm
and indicator having one of them a cam and the other resting against said
substantially as described.
cam, all