Improvements in Nailing or Slugging Machines for Boots and Shoes.
Year: 1897

page_text: Date of Application, 11th May, 1897-Accepted, 3rd July, 1897.
COMPLETE SPECIFICATION.
Improvements in Nailing or Slugging Machines for Boots and Shoes.
I, SOLOMON MARCELLA CUTTER, of 76, Lincoln Street, in the City of Boston,
County of Suffolk, State of Massachusetts, United States of America, Manufac-
turer, do hereby declare the nature of this invention and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement :-
-
This invention relates to improvements in nailing machines and more especially
in machines to drive slugs into the heels of boots and shoes or analogous work.
The object of the invention is to produce a more practical, smoother operating and
mere reliable machine than others now in common use, one of which can be run
at greater speed and will produce more and better work with less complication of
working parts.
The invention consists in novel mechanism and combinations and arrangements
of elements which will be fully described hereinafter and claimed, the same being
illustrated on the accompanying sheets of drawings which form an essential part
of this specification and whereon:-
Fig. 1 represents a side elevation of the complete machine showing lower part
of the standard in section.
Fig. 2 represents a plan view of the head of the machine.
Fig. 3 represents a central longitudinal section of the head of the machine and
the top of the standard.
Fig. 4 represents a front elevation of the head of the machine and the top of the
standard.
Fig. 5 represents a similar front elevation with the plates on the front of the
head removed showing internal mechanism.
Fig. 6 represents a detail sectional view showing the means employed to adjust
the awl.
Fig. 7. represents a side elevation of the front portion of the head of the machine
opposite to that shown in Fig 1.
Fig. 8. represents a vertical section on the line A-B shown in Figs. 2 and 3,
showing a portion of the starting and stopping mechanism.
Fig. 9. represents a horizontal section through the rear portion of the driving
shaft.
Fig. 10 represents a vertical section on the line C-D shown in Figs. 2 and 3,
showing the mechanism to automatically adjust the height of the stock support
and to automatically withdraw the support to allow the feeding of the stock also
the brake to stop the machine.
-
Fig. 11 represents a horizontal section of the line E-F shown in Fig. 10.
Figs. 12 and 13. represent detailed views of the clutch used in the starting and
stopping mechanism.
Fig. 14 represents an enlarged horizontal section through the lower part of the
front part of the head of the machine on the line G-H in Fig. 3.
Fig. 15. represents a longitudinal section on the line - shown in Fig. 14.
Fig. 16. represents a cross section on the line K-L shown in Fig. 14.

page_text: Fig. 17. represents a detailed bottom view of the adjustable stock guage.
Fig. 18. represents a detailed side elevation of the adjustable stock guage.
Fig. 19. represents a detailed cross section through the lever which operates the
adjustable stock guage.
Fig. 20. represents another construction of the mechanism employed to auto-
matically adjust the height of the stock support and to automatically withdraw
the same.
Fig. 21. represents another arrangement to automatically move the movable
part of the nail tube or throat to allow the feeding of the stock.
Fig. 22. represents a section of the lower part of the standard of the machine
showing a modified form from that shown in Fig. 1, of the mechanism connected
with and operated by the treadle which starts and stops the machine, and by which
the stock support is automatically raised by the starting and lowered by the
stopping of the machine.
Similar letters refer to similar parts wherever they occur on the different parts
of the drawings.
The machine is provided with a suitable frame for the support of the various
devices which constitute it, which frame preferably consists of the standard 1 and
the frame 2 for the support of the mechanisms included in the head of the machine
attached in a suitable manner to the top of said standard. The standard 1 and
the frame 2 may be made in one or more parts as desired. Within bearings in
the frame of the head is mounted the driving shaft 3 which carries the loose
pulleys 4 and 5, the pulley 5 being provided with a hand or balance wheel 6. Upon
the driving shaft is also firmly mounted the cams 7 and 8 for a purpose as will be
fully described hereinafter. The frame 2 is provided in its forward part with the
plate 9 which is termed the work plate and against which the work is held while
the nails or slugs are being driven.
The stock is supported on a suitable support consisting of the horn 10 and a ver-
tically movable shaft or support within a recess in which the lower end of the horn
proper fits.
This vertically movable shaft is preferably made in two parts 11 and
12 adjustable one to the other so as to raise or lower the horn proper and thereby
adjust the pressure of the horn upon the work. The adjustment of the supporting
shaft is preferably accomplished by screw threading one of its constituent parts and
screwing it more or less into a screw threaded recess in the other part by means
of a suitable hand wheel 13 on the part 11 in a manner substantially as shown on
the drawings. This adjustment may, if so desired, be accomplished in any other
manner. The supporting shaft is mounted in bearings in the standard 1" and is
prevented from turning in said bearings by means of the screw 14, screwed
through one of the bearings for the supporting shaft and having its inner end rest-
ing loosely within a longitudinal groove 15 on the portion 11 of the supporting
shaft. Toggles 16, 17, are pivotally attached together. The upper end of the
toggle 16 is pivotally attached to the lower end of the portion 12 of the support-
ing shaft and the lower end of the toggle 17 is pivotally attached to the link 18
which is itself pivotally attached to the treadle 19. The upper end of the link 18
to which the toggle 17 is attached, is pivotally connected to a stationary part of the
standard 1 by means of the link 20 so as to hold the link 18 in substantially a ver-
tical position. The treadle 19 is fulcrumea at 21 to an ear on the standard 1 and
to the rear end of said treadle is pivotally attached the vertical rod 22 which rod
is guided in bearings in the standard as shown. A coil spring 23 surrounds the
rod 22 between one of its bearings in the standard and a collar 24 adjustably but
firmly secured on the rod, the tendency of said spring being to force the rod down-
ward and consequently to press the horn proper 10 against the under side of the
work plate or against the stock held between the horn and the work plate with
sufficient pressure to hold the stock against the work while the nail or slug is being
driven. The treadle 19 is held in its elevated or normal position as shown on the
drawings by means of the spring 23 and is depressed against the influence of said
spring for the purpose of withdrawing the horn when the amount of the automatic

page_text: withdrawal of the horn as hereinafter described is insufficient to allow stock of
increased thickness to be placed upon the horn.
The mechanism to automatically adjust the height of the horn is preferably
constructed as follows: --
On the upper end of the rod 22 or on a stud 25 secured to the upper end of the
rod 22, is the block 26 which block is loosely movable up and down on said rod,
the upper end of said block being forked and projecting upward on either side of
the driving shaft so as to guide the block in its movements. The upper end of
the block 26 is provided with a pin or roll 27 which is acted upon by a cam
groove 28 on the cam 7 to cause the block to move up and down on the rod 22 or
on its attached stud 25. On either side of the block 26 and pivotally attached at 29
thereto are the levers 30, 30 within bearings in which is mounted the clamp
oll 31. This roll, projects through a perforation 32 in the block 26 in such a
position that when in its normal position one side of the roll will rest against the
rod 22 or the stud 25 which rod or stud is preferably flattened at this place, the
opposite side of the roll 31 resting against the wall of the perforation 32 which wall
is inclined to the flattened surface of the stud being nearer to the stud at the
lower end of said perforation. Thus it will be seen that the roll 31 projects
through a tapering perforation in the block 26 and that the cam groove acting
upon the pin 27 on the block 26 will cause said block to move upward and down-
ward on said roll or stud or with said rod or stud as will be understood by a further
description of the device. As the block starts to move upward it will cause the
roll 31 by the action of its gravity to engage and clamp the blocks 26 and stud 25
firmly together. As the stud is attached to or made in one piece with the rod 22
the upward movement of said stud will draw said rod upward against the influence
of the spring 23 which movement will cause the withdrawal of the horn from the
stock. The groove in the cam 7 is preferably so formed that it will cause the horn
to be automatically withdrawn once in each complete rotation of the driving shaft.
This action upon the horn is entirely automatic and is accomplished for the pur-
pose of allowing the feeding of the stock by the awl as will be fully described
hereinafter.
The free ends of the levers 30, 30 are joined together by means of the bar 33
which bar comes in contact with a screw stop or projection 34 on the frame as the
block is moved downward by the action of the cam groove 28. The action of this
stop upon the levers is such that it will cause the roll 31 to be retarded in its down-
ward movement while the block continues to move downward the full movement
imparted to it from the cam groove 28. This retarding of the downward move-
ment of the clamp roll causes it to release the stud 25 and the rod 22 and allows the
spring 23 to force the horn upward against the underside of the stock with a
pressure sufficient to resist the action of the driver when driving nails or slugs.
When the cam 7 again causes the block 26 to be drawn upward it will allow the
clamp roll 31 to move downward in the tapering perforation in the block by its
gravity, or a suitable spring acting thereon, and by clamping the block and the
rod 22 firmly together will withdraw the horn from the underside of the stock.
The stop 34 is made adjustable in the frame it being held in its adjusted position
by means of the check nut 35 and it will be seen that by this adjustment of the
stop, I am able to both adjust the amount the horn is withdrawn from the stock and
the time rod 22 is released from the block.
The cam groove 28 is so formed that the roll 31 will be raised out of engagement
with the block 26 and rod 22 during the greater part of the revolution of the driv-
ing shaft, it being in such a position as to clamp said block and roll firmly together
and to withdraw the horn only during the time that the stock is being fed the
desired distance between the slugs by the stock feeding mechanism.
It will be obvious that a suitable jack last or other well known equivalent means
used to support stock may be used as a support for the stock in the place of the horn
shown on the drawings and that such supports may be operated by the mechanism
described herein without departing from the spirit of my invention. Also that

page_text: .
such stock support and its operating mechanism may be used on other than nail
driving machines, and I do not wish to confine myself to its use in connection with
nailing machines alone.
In Fig. 20, has been shown a detailed view of another arrangement of the mech-
anism which is used to cause the automatic adjustment of the height and the with-
drawal of the stock support. In this arrangement the stud 25 has been shown in
the form of a perforated block, and the block 26 as projecting downward into the
perforation therein being provided near its lower end with an inclined surface. The
clamp roll 31 is inserted through the perforation in the stud 25 and projects through
side slots in said stud. This roll is so arranged that it will engage the inclined sur-
face on the block 26 and the side of the perforation in the stud 25 clamping the
block and stud firmly together. In this arrangement the adjustable stop 34 is
made in the form of bars adjustable on the side of the stud 25 which bars limit
the downward movement of the roll within the slotted side perforations in the stud.
The operation of this device is the same as that described in relation to the
mechanism shown on the other views of the drawings.
The starting and stopping mechanism, which is preferably used on the machine,
is constructed substantially as follows:
-
The sleeve 36 is keyed or otherwise firmly mounted upon the driving shaft 3 and
the dog 37 is fulcrumed at 38 within a longitudinal groove on the outside of said
sleeve in such a manner that it will be capable of a rocking movement on said ful-
crum so that its end will move towards and from the centre of the driving shaft.
Springs 39, 39 of any suitable construction act upon the dog so that when in its
normal position the inner end of the dog will be forced outward from the centre of
the driving shaft. On the drawings these springs have been shown as spiral
springs placed within recesses in the sleeve, which spring acts upon
od 40, which rod passes through the dog and projects on either side thereof as
shown in Fig. 13. The hub of the pulley 5 is provided with one or more projec-
tions 41, 41 adapted to engage the inner end of the dog when the dog is in its
normal position and thereby to turn the driving shaft by the rotary motion of said
pulley in the direction of the arrows, as shown on the hand wheel attached to
the pulleys 5.
a
The upper
A second treadle 42 is fulcrumed at 21 to the lower part of the standard, and to
the rear end of said treadle is pivotally attached the vertical rod 43.
end of said rod is also pivotally attached to the bell crank lever 44 which lever is
fulcrumed at 45 to the frame 2 of the head of the machine. The free arm of the
bell crank lever 44 extends upward at one side of the rear bearing for the driving
shaft, and there is provided with the hooked wedge shaped portion 46 as shown in
Fig. 8. The rear bearing for the driving shaft is cut away as shown in Figs. 8
and 9 to receive the upper wedge shaped portion of the bell crank lever when said
portion is forced backward by the depression of the forward end of the treadle 42
to the position shown in Fig. 1 when starting the machine. A coil spring 47
surrounds the rod 43 between an ear on the frame 2 through which the rod passes,
and a collar adjustably mounted on the rod, the influence of said spring tending
to raise the forward end of the treadle 42, and, by turning the bell crank lever 44
on its fulcrum, to move the wedged shaped portion of said lever forward so that
the tail of the dog 37 in rotating with the driving shaft will engage said wedged
shaped portion and by so doing will turn said dog upon its fulcrum and swing the
inner end of the dog towards the centre of the driving shaft out of
engagement with the projection 41 on the pulley 5 with which it has been in
engagement. This action of the bell crank lever will prevent any further rotary
motion being imparted to the driving shaft from the pulley 5. A spring pressed
stop 48 is attached to the top of the bell crank lever 44 and is engaged by the tail
of the dog 37 after said dog has been acted upon by the wedge on the bell crank
lever and disengaged from the projections on the pulley 5. This spring pressed
stop 48 forms a yielding cushion for the dog and thus the stopping of the driving
shaft and consequently the stopping of the machine accomplished with as little

page_text: shock as possible to the machine. If so desired the bell crank lever may be pro-
vided with a spring catch 49 adapted to spring over the dog 37 after the machine
as been brought to a stop so as to prevent any rebounding of the driving shaft,
such catch may he dispensed with, without departing from my invention.
To insure the completion of the operation of driving a nail after the pressure is
removed from the starting and stopping treadle and prior to the withdrawal of the
horn, even though said pressure be removed at the very commencement of the
revolution of the driving shaft, I provide the sleeve 36 with a recess or cut away
portion. 50 for the reception of the wedge 46 which portion is of sufficient size
and in such a location on said sleeve as to hold the bell crank 44 in position to
retain the horn against the stock, until after the driver has descended and driven
the nail, said cut away portion being brought into line with the wedge portion of
the bell crank lever just at the completion of driving the nail or after the nail is
driven, for a purpose to be fully understood by a further description of the
machine.
In order to still further fully lessen the shock to the machine when stopped, I
may provide the driving shaft with a suitable brake and such has been shown as
applied to the exterior of the cam 7 it being constructed as follows:
A lever 51 is fulcrumed at 52 to the frame, the free end of this lever being con-
nected to a second lever 53 by means of a connecting link 54. The lever 53 is
fulcrumed at 55 to the frame and at its opposite end attached to the bell crank
lever 44 by means of a bolt or stud which passes through and is adjustable in slots
in the levers 53 and 44. Thus it will be seen that when the bell crank lever is
turned on its fulcrum to cause the starting or stopping of the machine it will,
through its connection with the lever 51 cause the latter lever to turn in either
direction on its fulcrum 52. A friction band or brake 56 surrounds the cam. 7
being connected at its ends to the lever 51 in such a manner that when the said
lever is turned on its fulcrum in stopping the machine it will cause said band to
draw tightly around said cam and thereby produce a friction between the band
and cam which will tend to stop the rotation of the driving shaft. Thus it will
be seen that, the friction band and its connection with the starting and stopping
mechanism forms a brake which will help stop the machine with as little shock
as is possible. By the adjustment of the stud within the slotted perforations in
the lever 53 and in the bell crank lever 44, I am enabled to adjust the amount
of the friction of the band 56 on the cam 7.
The starting lever 42 is provided with a projection 57 which extends upward in
the rear of the toggles 16 and 17 being connected to said toggles by the connect
ing link 58 so that when the starting lever is depressed to the position shown on
the drawings it will have acted upon the toggles and raised the stock support. so as
to cause said support to press against the underside of the stock, and as the
machine only starts when the starting treadle reaches the extreme end of its down-
ward movement it will be obvious that it can never start before the stock support
has been raised to its proper position. To allow the starting treadle to be fully
depressed in case the stock support is raised as far as possible prior to the with-
frawal of the wedge 46 from under the dog 37 and the consequent starting of the
machine I provide the link 58 with a slot through which one of the pins pass
which connect said link to the toggles or to the projection on the starting lever
and insert a spring 59 within said slot as shown in Fig. 1, so that said spring will
vield and allow the treadle to be further depressed if necessary. This yielding
in the connection between the starting treadle and the toggles may be accom-
plished by any other and equivalent means than by the use of the spring 59 with-
out departing from my invention.
The yielding connection between the starting and stopping treadle and the
device to raise and lower the stock support is necessary or especially desirable
when stock of greater thickness than that just nailed is to be nailed, as the support
will be raised as far as possible before the wedge is withdrawn from the dog and
the machine started. If this yielding connection were dispensed with it would be

page_text: necessary in such a case to depress the treadle with sufficient force to overcome the
influence of the spring 23 and to force the rod 22 upward until the wedge 46 was
freed from the dog 37 which operation will require a great pressure on the treadle.
By the use of the connection between the starting lever and the device to raise
and lower the support for the stock it will be seen that said, support is auto-
matically raised into operative position by the starting of the machine and auto-
matically lowered so as to remove the stock therefrom or to replace it when
desired by the stopping of the machine.
It will be seen that when the toggles are drawn backward by the link 58 in
stopping the machine, the tendency of the spring 23 on the rod 22 is such that it
would tend to turn the horn depressing treadle 19 on its fulcrum and cause the
horn to remain at its upper position and against the stock.
To obviate this and to allow the horn to be withdrawn by the stopping of the
machine I provide a suitable locking device to lock the rod 22 against the influence
of the spring 23, which locking device is preferably constructed as follows and as
shown on drawings:-
A bar 60 extending backward from the projection on the starting treadle is
pivotally attached to said projection by means of a pin which passes through said
projection and through a slotted projection in said bar. The rear end of this bar
is forked and embraces the rod 22 being provided with a block 61 adjustably
attached to said bar having teeth which engage the teeth of a rack 62 on the
rod 22 when said bar is forced backward by the action of the projection on the
starting and stopping treadle in stopping the machine. A link or links 63
pivotally attached at their upper ends to an ear on the standard 1 are also pivotally
attached at their lower ends to the bar 60 and act to support the rear end of said:
bar preventing it from being swung downward by the action of the spring 23 when
the toothed block 61 engages the rack 62. A spring 64 acts upon the links 63
tending to hold the block 61 in contact with the rack 62.
It will be seen that when the starting and stopping treadle commences to with-
draw the horn from the stock the block 61 will be moved into engagement with
the rack 62 by the action of the spring 64 and lock the rod 22 against the influence
of the spring 23 the remaining movement of said treadle causing the connecting
pin between the projection on the treadle and the bar 60 to move
backward in the slot in the bar. When the starting treadle is again depressed
the slot in the bar 60 will allow the projection on the treadle to move forward
sufficient to raise the horn before the block 61 is disengaged from the rack 62.
This effectually prevents the horn from being forced upward by the spring 23
when the horn is being automatically operated by the starting and stopping
treadle as set forth.
This automatic withdrawal and return of the stock support by the operation of
the starting and stopping treadle is entirely independent of the mechanism where-
by the support is withdrawn by the depression of the treadle 19 and also entirely
independent of the mechanism whereby the stock support is automatically and
intermittingly withdrawn during the operation of the machine to allow the stock.
to be fed the desired distance between each nail or slug.
It will be obvious that the mechanism to lock the stock support against the
influence of the spring 23 might, if so desired, be used independent of the mechan-
ism to withdraw or raise said support or of the starting and stopping mechanism.
The head of the machine is provided with a nail or slug tube or throat through
which the nail passes when being driven having the whole or a portion of said
throat movable to allow the feeding of the stock by the awl, also with an awl and
its operating. mechanism a feeding mechanism for the stock, a driver and its oper-
ating mechanism, a feeding mechanism for the nail or slug strip used in the
machine a cut off mechanism to sever each nail or slug in its turn from the nail or
slug strip and adjusting mechanism to adjust the several devices to insure the
proper working of the machine, as will be herein fully described.
The throat through which the nails or slugs pass when being driven is formed

page_text: with the whole or a portion thereof situated with a movable block 65 which block
is guided in its movements in a groove in the frame of the head or in a plate 66
secured to the front of the frame. This block is normally held in such a position
as to be in line with the driver being held in such a position by means of a lever 67
fulcrumed at 68 to the frame of the head of the machine. The upper end of the
lever 67 is provided with a roll 69 which is acted upon by means of the cam sur-
face 70 on the cam 8 as shown. The roll on the lever 67 is kept in contact with
the cam 8 by means of a spring 1 substantially as shown in dotted line in Fig. 5.
The movement of the lock 65 is for a purpose as will be fully described herein-
after.
A lever 72 is fulcrumed at 73 to the frame of the head, which lever is provided
with an arm extending upward from said lever having a roll 74 which is acted
upon a cam groove 75 on the cam 8 to cause said lever to oscillate on its
fulcrum. Within a perforation in the free end of the lever 72 is secured a headed
bolt 76 which is prevented from turning in said perforation by means of a set
screw 77 in the lever, and on the head of said bolt eccentric to the bolt is made a
pin 78 for a purpose to be described. On the pin 78 is loosely hung a lever 79
which rests within a vertical groove in the frame of the head and is held in the
groove by means of a plate 80 secured to the front of the frame of the head. To
the lower end of the lever 79 is secured an awl 81 by means of a block 82 and
bolt 83. Thus will be seen that the action of the cam
upon the lever 72 will
cause an up and down movement of the lever 79 which will cause the awl to enter
and withdraw from the stock, also that the adjustment of the bolt 76 in the
lever 72 will adjust the distance that the awl will enter the stock.
A lever 84 is fulcrumed at 85 to the frame of the head, which lever is provided
at its upper end with a roll 86 which rests against and is acted upon by a cani
surface 87 in the cam 8 in order to cause the lower end of said lever to oscillate on
its fulcrum towards and from the nail throat of the machine. The lower end of
the lever 84 is so formed that it engages the lower end of the awl carrying lever 79
causing the latter lever to swing in one direction on the pin 78 on which said lever
is hung, the awl-carrying lever being swung in the opposite direction by means
of a spring 88. The cam surface 87 is so timed that it will cause the lateral
swinging of the awl-carrying lever when the awl is in the stock, which action will
cause the feeding of the stock. The spring 71 which keeps the roll 69 on the
lever 67 in contact with the cam surface 70 also tends to keep the roll 86 on the
lever 84 in contact with the cam surface 87. As the amount of the movement of
the lower end of the lever 84 is sufficient for the greatest feed of the stock
necessary and governs the amount of the feeding of the stock, it is desirable that
such movement should be adjustable to vary the feed. To accomplish this adjust-
ment I provide the frame with an adjusting screw 89 which is screwed through the
frame of the head and engages the lever to limit its lateral movement from the
nail tube or throat.
Within vertical guideways on the front of the head of the machine is mounted
the sliding block 90 which is capable of a vertical reciprocating movement in said
guideway and is so reciprocated by means of the pitman 91 one end of which is
pivotally attached at 92 to said block, the other end being pivotally
attached to the crank pin 93 on the front of the cam 8. The driver 94
is secured to the lower end of the block 90 and moves vertically with the same
entering the nail tube or throat and when in its lower position extending through
the same so that the lower end of the driver is even with the under side of the work
plate 9.
I do not claim any particular novelty in the driver or its operating mechanism
as such is a common and well known mechanism and may be substituted by any
now in common use.
In this machine I use a suitable comb shaped nail or slug strip 95 substantially
like that shown in Fig. 15. This strip is preferably coiled and placed upon a
suitable reel 96 pivotally attached to a bracket projecting from the frame of the

page_text: head of the machine, but the construction or the use of said reel forms no essential
part of my invention and may be varied or entirely despensed with if so desired.
The nail or slug strip is guided through a groove 97 in a block 98 as shown in
Figs. 14, 15, and 16, which block is secured to the frame 2 by means of the screw 99.
said screw also helping to attach the work plate to the frame. The end of the nail
or slug strip after passing through the groove in the feeding block enters the nail
tube or throat from the rear of said throat through a perforation in the frame or
in a plate 100 secured to the front of the frame. This plate forms one side of the
nail tube or throat. The nail or slug strip is fed into the nail tube or throat the
distance between each nail or slug on the strip by means of the following
mechanism: :-
A slide 101 is longitudinally movable towards and from the nail tube in an L
shaped groove 102 in the feed block 98 shown in Fig. 16, being held in such groove
by the plate 103 secured to the side of the feed block. To the forward end of
said slide is pivoted the feed pawl 104 which is acted upon by the spring 105 to
hold said pawl in contact with the side of the nail or slug strip. This pawl is
arranged to enter between the shanks of the two nails on the nail strip and pre-
ferably just below the head portions of said nails which head portions are joined
to form the nail strip. A lever 106 is fulcrumed at 107 to the frame of the head
and has its lower end resting in a side recess in the slide 101 the upper end of the
lever being provided with a set screw and check nut 108.
A pin 109 is mounted in a perforation in the front of the frame of the head
being free to move longitudinally within said perforation as shown in Fig. 7, and
kept from turning therein by means of the set screw 110 screwed through a per-
foration in the frame and entering a longitudinal groove on said pin but such
groove has not been illustrated it being of the common and well known construe-
tion. The front end of this pin is provided with the roll 111 which is acted upon
by the cam surface 112 on the cam 8 to move the pin backward in its perforation.
The pin 109 when forced backward comes in contact with the set screw in the
upper end of the lever 106 so as to turn said lever on its fulcrum and to move the
slide 101 forward in its guide in the block 98 in order to feed the nail strip into
or towards the nail throat. A spring 113 shown in dotted lines in Fig. 7 acts
upon the lever 106 tending to turn it on its fulcrum and by moving the pin
forward to keep the roll 111 in contact with the cam surface 112.
Thus
it will be seen that the lever 106 by its rocking movement on its fulcrum
will cause an intermitting feeding of the nail strip into the nail throat. The
lever 106 is provided at its upper end with a second set screw and check nut 114
so arranged that the end of the screw will come in contact with the frame of the
head of the machine when the lower end of the lever is moved backward by the
action of the spring 113. It will be seen that the amount of the forward move-
ment of the lower end of the lever 106 is adjustable by means of a set screw 108
and its backward movement is adjustable by means of the screw 114, as the move-
ments of the lever 106 governs the amount of the feeding of the strip said feeding,
of the strip is made adjustable by means of the set screws 108 and 114.
.
To prevent any liability of withdrawing the nail strip after it has been fed
forward, when the feed pawl is moved backward, I provide the block 98 with the
lever 115 which is fulcrumed at 116 to said block and preferably provided with
serrations in its forward end which rests against the side of the nail strip opposite
to the pawl 104. This lever is pressed against the nail strip with a yielding
pressure by the influence of a spring 117 which pressure is adjustable by means of
a set screw 118 substantially as shown in Fig. 14. To prevent the lever 115 from
being forced against the end of the paw! by the influence of the spring 117 when
the nail strip is removed from the feed block, I provide said block with a set
screw 119 which acts as a stop for said lever and may be adjusted as desired and
shown in said Fig. 14.
The feed block 98 is provided with the removable cover 120 which is preferably

page_text: furnished with a suitable handle and held in position on the block by means of
screws substantially as shown in Figs. 15 and 17.
Attached to or made in one piece with the movable block 65 is a knife or
cutter 121 which moves in a groove in the front of the frame of the head or in the
plate 100 attached to the frame. This knife is so arranged that when the movable
block is in its normal position, or so that the portion of the throat which is con-
tained therein is in a fine with the driver, the end of said knife will be inserted
between the shank of the nail which has been fed into the throat and the next
nail on the nail strip as shown in Figs. 14 and 15, but when the movable block is
moved out of line with the driver said knife will be withdrawn to one side and
from the nail strip so as to allow the next nail to be fed into the throat by the
feeding mechanism.
Prior to the withdrawal of the knife, the nail which has been fed into the throat
is severed from the nail strip by the driver forcing the nail strip downward against
the upper cutting edge of the knife. The nail thus severed passes downward
through the nail tube, enters the hole made in the stock by the awl and is driven
by the driver.
The machine is provided with a suitable adjustable gauge to properly guide the
stock while the nails are being driven which gauge is preferably constructed as
follows:-as illustrated in Figs. 17, 18, and 19.
To the under side of the frame of the head is arranged a hand lever 122 which
lever is fulcrumed at 123 to said frame in such a manner that its free end is
capable of a swinging movement towards and from the front of the machine.
This lever is provided at or near its free end with a spring actuated pawl 124
which in its normal position engages the teeth on the comb 125 attached to or
made in one piece with the frame of the head. This pawl acts to hold the lever 122
in any desired position to which it may have been turned for a purpose as will be
fully understood by a further description of the invention.
The lever 122 is provided with two perforations 126 and 127 and through the
desired one of said perforations is inserted a shouldered screw 128 which screw is
screwed into a screw threaded perforation 129 in the gauge 130. The gauge is
preferably made in the form of an L, one arm of which is provided with a screw
threaded perforation 131 corresponding to the perforation 127 in the lever 122 for
a purpose to be understood by a further description of the gauge. The arm of
the L-shaped gauge which projects towards the front of the machine is provided
with a slot 132 through which a shouldered screw 133 passes said screw being
screwed into the underside of the frame of the head, or the work plate 9 secured
to said frame. The forward free end of the gauge forms the gauge proper against
which the stock is held while being nailed and said forward end is preferably
slightly curved as shown in Fig. 17.
In order to adjust the gauge so as to drive the nails into the stock the desired
distance from the edge of the same, it is only necessary to depress the free end of
the pawl 124 to withdraw it from the comb 125 and then to swing the hand
lever 122 on its fulcrum either forward or backward thereby causing the gauge 130
to move in a corresponding direction on the screw 183, the slot 132 in the gauge
allowing such a movement. After the gauge has been adjusted it is locked in
such a position by releasing the pawl 124 and allowing the pawl to engage the
comb on the frame.
The perforations 126 and 127 in the lever 122 and the corresponding screw
threaded perforations 129 and 131 in the gauge are for the purpose of varying the
amount of adjustment of the gauge by the swinging of the lever 122 that is to say,
if the gauge and lever are pivotally connected together by inserting the screw 128
through the perforation 126 in the lever and screwing it into the perforation 129
in the gauge as shown on the drawings, the movement of the lever will adjust the
guage less than when said lever and gauge are connected by the insertion of the
screw 128 through the recess 127 in the lever and screwing it into the perforation
131 in the gauge.

page_text: It will be obvious that a series of any number of perforations corresponding to
the perforations 126 and 127 in the lever may be made in said lever and a similar
series of perforations made in the arm of said L shaped gauge if so desired without
departing from the spirit of my invention.
In nailing boots and shoes it is sometimes desirable to drive the nails at two
different distances from the edge of the sole or heel and especially is this necessary
when slugging the heels with two rows of slugs, one inside of the other. To pro-
vide means whereby the gauge may be quickly and accurately adjusted to the
desired positions to accomplish this result, I supply the comb 125 or the frame of
the head with a series of perforations 134 and insert stock pins into the desired per- 1
forations one to stop the forward movement of the hand lever and another to stop
its backward movement. Thus it will be seen that when it is desired to drive
nails nearest to the edge of the stock, after the stock pins have been properly
adjusted in the perforations 134 it is only necessary to swing the lever forward
until it is stopped by the forward stop pin and to swing it backward until stopped
by the rear stop pin when it is desired to drive the nails which are to be the furthest
from the edge of the stock without being obliged to measure the position of the
gauge at each adjustment.
In Fig. 22 I have shown another form of the mechanism whereby the stock
support is caused to automatically withdraw when the machine is stopped by the
rise of the treadle 42 and automatically return again into operative position
when the machine is again started by the depression of the starting treadle. This
form of said mechanism is constructed substantially as follows:
The projection 57 on the treadle 42 and the link 58 attached to said projection
above described are dispensed with and in lieu of such device, I attach a chain or
belt 135 at one end to the toggles 16. 17 and at the other end to the treadle 42
back of its fulcrum 21. This chain or belt is carried over a suitable sheave or
roller 136 attached to the standard 1 at the rear of the toggles substantially as
shown. A second chain or belt 137 is attached at one end to the toggles 16, 17
and the other end to the treadle 42 in front of its fulcrum 2.1. This second chain
or belt is carried over a suitable sheave or roller 138 attached to the standard 1
in front of the toggles substantially as shown. By this construction it will be
seen that when the treadle 42 is depressed as shown on the drawings to start the
machine it will cause a pulling strain to be exerted on the chain 137 which strain
will operate said toggles and raise the stock support. A spring 139 is introduced a
within the chain or belt 137 for the same purpose as above set forth in relation to
the spring 59. It will also be seen that when the treadle 42 is released from its
downward pressure to stop the machine the chain 135 will operate upon said
toggles and automatically lower the stock support. A spring 140 is introduced
within the chain or belt 185 to allow of a slight yielding of the chain, if required.
In this construction, the link 60 which operates the lock 61, 62 to prevent the
upward movement of the stock support caused by the influence of the spring 23
is preferably attached to the toggles as shown.
In using my improved nailing machine the only time that it is necessary to
depress the treadle 19 is when you desire to nail stock the thickness of which is
increased over that just nailed more than the distance the stock support is auto-
matically withdrawn by the stopping of the machine, which is the case when you
desire to nail heels after having nailed soles or when you desire to nail
very high heels after having nailed low ones. After the support has
been depressed by the treadle 19 the stock placed upon the support and
the machine started the height of the support will be automatically adjusted and
properly operated by the mechanisms herein before described.
In Fig. 21, I have shown another means which might be employed to cause the
movement of the nail tube or throat out of line with the driver so as to allow the
feeding of the stock by the awl and the placing of the hole made thereby in line
with the driver so as to receive the nail when driven.
In this construction the movable block 65 which contains the movable nail tube

page_text: is moved to one side by the operation of the mechanism which causes the feeding
of the nails to or over the nail tube. To accomplish this I provide the movable
block 65 with a recess or perforation 145 and also provide the feed slide 101 with
a wedge shaped projection 146 which enters said recess as the slide is moved for-
ward in feeding the nails to the driver. As this wedge shaped projection enters
the recess in the block it comes in contact with the side of said recess and forces
the block out of line with the driver. The block is returned into line again when
the slide is drawn backward, by the action of the lever 67 as hereinbefore described.
I do not wish herein to limit myself to the use of the exact combination of parts
as herein shown and described to produce the automatic adjustment or inter-
mitting withdrawal of the stock support the automatic withdrawal and replacing
of the support by the operation of the starting and stopping treadle, the locking
of the support against its upward pressure, or the moving of the nail tube or
throat out of line with the driver and the return of the same, as such parts may
be varied by the use or substitution of well known equivalent parts or changed
within the scope of mechanical skill without departing from the spirit of my
invention, if so desired.
With the various parts of the machine in the positions shown on the drawings
and the starting lever just depressed as shown, the operation of the machine is as
follows:-
The driving shaft is caused to rotate in the direction of the arrows shown on
the hand wheel in Figs. 4 and 5 causing the awl to be driven into the stock by
the action of the cam groove 75 on the lever 72. The stock support is then
slightly withdrawn from the stock by the action of the cam groove 28 on the
block 26. The stock is then fed forward the desired distance between the slugs by
the action of the cam surface 87 on the lever 84, which movement causes the
movable block 65 containing a portion of the nail tube or throat to move so that
the portion of the nail tube or throat contained therein is out of line with the
driver and also causes the end of the knife 121 attached to said movable block
to be withdrawn from the nail or slug strip 95. This feeding of the stock
also causes the placing of the hole or recess in the stock made by the awl
directly in line with the driver to receive the nail. The spring 23 is then
allowed to return the stock support to its normal position and to press the support
against the under side of the stock by the cam groove 28 acting on the block 26
and the unclamping of the rod 22 from the block 26 by the stop 34 acting on the
levers 30, 30.
The awl is then withdrawn from the stock by the cam groove 75 acting on the
lever 72 and at the same time the nail or slug strip is fed to the nail tube or throat
by the cam surface 112 acting to turn the lever 106 on its fulcrum. The awl is
then returned to its normal position by the cam surface 87 allowing the spring 1
to act upon the lever 84 releasing the spring actuated awl carrying lever 79 and at
the same time the movable block 65 is moved so as to bring the portion of the
throat contained therein in line with the driver and its attached knife 121 is
introduced between the first and second nail on the nail strip, by the can
surface 70 acting on the lever 67. The driver, having moved continually during
the above operations of the machine has reached a position in its downward stroke
where the lower end of the driver is a little above the nail which has been fed into
or above the nail throat, now continues its downward movement cutting off and
driving the nail into the stock.
If the starting and stopping treadle has been released during the preceding
operations of the machine it will allow the wedge shaped projections 46 to release
the dog 37 from the projection 41 on the pulley 5 and stop the machine, but if
the treadle is still held in its depressed position the operations of the machine will
be repeated over and over again. At the same time that the wedge shaped pro-
jection moves into position to stop the machine, the stock support will be
automatically withdrawn from the under side of the stock by the connection of
the starting and stopping treadle with the toggles which operate the stock support,

page_text: for the purpose of removing the stock which has just been nailed from the stock
support and replacing it with other stock to be nailed.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is:-
1. In a nailing machine a driver and operating mechanism to reciprocate the
driver, an awl, an awl carrying lever 79, a cam and connected mechanism to move
said lever both vertically and towards and from the lever as set forth, a block 65
having a nail tube therein, guided within guides in the frame of the machine
held against said awl carrying lever, and moved laterally in one direction by
engagement with said awl carrying lever during the lateral movement of said
lever, to allow the feeding of the stock by the awl, as set forth.
2. In a nailing machine a driver and operating mechanism to reciprocate the
driver, an awl, an awl carrying lever 79, a cam and connected mechanism to move
said lever both vertically and towards and from the driver, to cause the awl to
both puncture and feed the stock, an adjustable stop to limit the amount of the
movement of said lever from the driver to vary the feeding of the stock combined
with a block 65 having a nail tube therein, guided within guides in the frame of
the machine, held against said awl carrying lever and moved laterally in one
direction by the lateral movement of the awl carrying lever, to allow the awl to
be moved into line under driver, when feeding the stock for the purpose set forth.
3. In a nailing mechanism a driver and operating mechanism to reciprocate the
driver, an awl, an awl carrying lever 79, a cam and connected mechanism to move
said lever both vertically and towards and from the driver as set forth, a block 65
having a nail tube therein guided within guides in the frame of the machine,
held against said awl carrying lever and moved laterally in one direction by
engagement with said awl carrying lever during the lateral movement of said
lever, to allow the feeding of the stock by the awl, a cam and a lever operated
thereby to return said block to normal position with its continued nail tube in
line with the driver for the purpose set forth
4. In a nailing machine a driver and operating mechanisma to reciprocate the
driver, an awl, an awl carrying lever, a cam and connected mechanism to move
said lever both vertically and towards and from the driver, to puncture and feed
the stock, a laterally movable block having a nail tube therein said block held
against awl carrying lever and moved out of line with the driver by the movement
of the awl carrying lever towards the driver, to allow the feeding of the stock by
the awl, a nail supply operated independent of the driver or awl operating
mechanism, whereby nails are delivered from the nail supply to the nail tube
while said tube is directly in line with the driver, substantially as set forth.
5. In a nailing machine, a driving shaft, a cam on said shaft, a lever pivoted
to the frame of the machine having a pin or roll acted upon by said cam, a bolt
adjustably but securely mounted in the frame end of the lever, a pin on said bolt
arranged eccentric thereto, an awl carrying lever pivotally hung on said pin, an
awl attached to the awl carrying lever moved up and down by the action of the
cam on said lever to pierce and withdraw from the stock, the distance said awl
pierces the stock being determined by the adjustment of the eccentric bolt within
the end of the lever, for the purpose set forth.
6. In a nailing machine, a driving shaft, a cam on the shaft, two levers operated
by said cam, the free end of one lever being moved vertically by said cam and the
free end of the second lever being moved laterally by said cam, an awl carrying
lever being hung to the vertically moving lever having its free end to move
laterally by the laterally moving lever and an awl attached to the awl carrying
lever said awl being given vertical and lateral movement by said levers, for the
purpose set forth.
7. In a nailing machine, a driving shaft, a cam on the shaft, an awl and opera-
ting mechanism whereby the awl is intermittingly reciprocated vertically to
· pierce and withdraw from the stock combined with a lever fulcrumed to the frame

page_text: and acted upon by said cam to move the awl laterally in one direction when the
awl is in the stock to feed the stock, and a spring to move said awl laterally in the
opposite direction for the purpose set forth.
8. In a nailing machine a reciprocating driver and mechanism to reciprocate
the same, the plates 66 and 100 having the nail tube formed therein through
which the nails are driven by the driver, the perforation in the plate 100, the feed
pawl 104 and mechanism to operate said pawl to intermittingly feed a comb shaped
nail strip through the perforation in the plate 100 and into the nail tube, the
knife 121 having upper cutting edge and guided within guides on the plate 100,
mechanism to move said knife laterally within the guides across the perforation
in the plate and through the comb teeth shank forming portions of the nail strip,
the end nail of the strip being severed from the strip against the cutting edge of the
knife by the downward movement of the driver as set forth:
9. A vertically adjustable stock support, the cam 7 having cam groove 28, the
perforation block 26 having an inclined surface as described and the pin and
roll 27 engaging the cam, the block 25 movable loosely within the perforation in
the block 26, the clamp roll 31 engaging the block 25 and the inclined surface
on the block 26 and connections between the vertically movable stock support and
the block 25, whereby the stock support is automatically adjusted downward for
increased thickness of stock to be nailed on the machine as set forth.
10. A spring pressed vertically adjustable stock support, the cam 7 having cam.
groove 28, the perforated block 26 having an inclined surface as described and the
pin and roll 27 engaging said cam, the block 25 movable loosely within the
perforation in the block 26, the clamp roll 31 engaging the block 25 and the
inclined surface on the block 26, automatic mechanism to disengage said roll from
the blocks 25 and 26, and connections between the vertically movable spring
pressed stock support and the block 25 whereby the stock support is automatically
adjusted downward or allowed to be pressed upward by its spring pressure, to com-
pensate for various thicknesses of stock to be nailed on the machine as set forth.
11. A vertically adjustable stock support, a block moved vertically and
positively, a tapering perforation in the block, a rod having bearing in the block
in which it is longitudinally movable, a clamp roll in said tapering perforation
clamping the block and rod firmly together when the block is moved in one direc-
tion but allowing the block to move freely on the rod when the block is moved in
the opposite direction, levers having bearings for the clamp roll, a stop to engage
said levers to move the clamp roll and to disengage the block and rod during a
desired part of the movement of the block, and connections between the rod and
stock support whereby the height of the stock support is automatically adjusted
for various thicknesses of stock and slightly withdrawn to allow the stock to be
moved on the support, for the purpose set forth.
12. A vertically adjustable stock support, a block moved vertically and
positively, a tapering perforation in the block, a rod having bearing in the block
in which it is longitudinally movable, a clamp roll in said tapering perforation
clamping the block and rod firmly together whenever the rod is moved in one
direction but allowing the block to move freely on the rod when the block is
moved in the opposite direction, a releasing mechanism to automatically release
the block and rod during a desired part of the movement of the block, and an
adjustable stop to operate said releasing mechanism, whereby the distance and the
time that the stock support is withdrawn is adjusted for the purpose set forth.
13. A vertically movable stock support, two independent treadles and indepen-
dent connections between each of said treadles and the stock support, whereby
the stock support is raised or lowered by either treadle independent of the other
treadle, for the purpose set forth.
14. A vertically movable stock support, a starting and stopping treadle, con-
nections with said treadle to start or stop the machine, and connections between
said treadle and the stock support to automatically raise and lower said support
respectively by the starting or stopping of the machine, combined with a second

page_text: treadle, and connections between said second treadle and the stock support,
whereby the stock support may be lowered independent of the starting or stopping
treadle for the purpose set forth.
15. A vertically movable stock support, toggles to raise and lower said support,
a starting and stopping treadle, mechanism operated thereby to start or stop the
machine, connections between the treadle and the toggles whereby said stock
support is automatically raised when the treadle is operated to start the machine
and automatically lowered when the treadle is operated to stop the machine for
the purpose set forth.
16. A vertically movable stock support, toggles to raise and lower said support,
a starting and stopping treadle mechanism operated thereby to start or stop the
machine, a yielding connection between the treadle and the toggles, whereby the
stock support is automatically raised when the treadle is operated to start the
machine and automatically lowered when the treadle is operated to stop the
machine, said yielding connection allowing the treadle to be further operated pro-
vided the stock support is raised as far as possible before the treadle has caused
the starting of the machine, for the purpose set forth.
17. A vertically movable stock support, mechanism connected with said support
to press it upward with a yielding pressure, a treadle independent of said mechan-
ism and a lock operated by said treadle and acting on said mechanism whereby
said support is released of its upward pressure at any of the various positions of
the support for the purpose set forth.
18. A vertically movable stock support, mechanism connected with said support
to press it upward with a yielding pressure, a starting and stopping treadle
independent of said mechanism to start and stop the machine, mechanism con-
nected with said treadle and governed thereby to raise and lower the stock support,
and a lock operated by said treadle acting on the mechanism which presses the
stock upward to release said support of its upward pressure, for the purpose set
forth.
19. A vertically movable and upwardly pressed stock support, toggles to raise
and lower said support, a treadle to operate said toggles, and a lock attached to
said treadle and operated thereby to lock said support against its upward pressure,
for the purpose set forth.
20. A vertically movable stock support, a spring to press said support upward
with a yielding pressure, toggles to raise and lower said support, a treadle con-
nected to said toggles to operate the same, a rack on the mechanism moved by said
spring in pressing said stock support upward, a link pivotally attached to said
treadle having teeth to engage said rack when said treadle is operated to lower
said stock support prior to the lowering of the same to lock said stock support
against the pressure of said spring, for the purpose set forth.
21. A vertically movable stock support pressed upward with a yielding pres-
sure, mechanism substantially as described to raise and lower said support, a
treadle connected to said mechanism to operate it, a rack on the parts moved in
causing said upward pressure on said support, a link attached to said treadle hav-
ing teeth thereon, a spring to force said link towards said rack so as to cause the
teeth thereon to engage the teeth of said rack to lock said support said upward
pressure, the connections between said treadle and link allowing said treadle to
be operated after said teeth engage said rack, whereby the support is first locked
against the upward pressure and then lowered or whereby said support is first
raised into position and then unlocked by and according to the movements of said
treadle, for the purpose set forth.
22. In a nailing machine, a driver and its accompanying mechanism to cause
the driving of the nails, a starting and stopping mechanism to start and stop the
machine, a stock support and connecting mechanism between the stock support
and the starting and stopping mechanism automatically raising and lowering said
support respectively by the starting and stopping of the machine, and mechanism
engaging the starting and stopping mechanism preventing the stopping of the

page_text: machine and consequent lowering of the stock support prior to the completion of
the operation of driving a nail, for the purpose set forth.
23. In a nailing machine, a driver and its accompanying mechanism to cause
the driving of the nails, starting and stopping mechanism to cause the starting and
stopping of the machine, a lever contained within said starting and stopping
mechanism, a stock support, and connecting mechanism between said support and
the starting and stopping mechanism whereby said support is automatically
raised and lowered respectively by the starting and stopping of the machine, com-
bined with a rotating sleeve and a recess in said sleeve, whereby said lever is pre-
vented from moving to stop the machine and lower the stock support after the
machine has been started, prior to the completion of the operation of driving a
nail, for the purpose set forth.
24. In a nailing machine having a vertically reciprocating driver, a gauge
movable on the machine towards and from the line of the movements of said driver,
a hand lever fulcrumed to the machine and attached to said gauge to adjust said
gauge in relation to the driver, a comb on the machine pawl on said hand lever
engaging said comb to hold said gauge in the adjusted position, perforations in
said comb, and stop pins to be placed within the desired perforations in said comb
to admit of a quick and positive changing of the gauge when driving two rolls of
nails of different gauge, substantially as set forth.
25. In a nailing machine, a driving shaft, a driver operated thereby, a cam on
said driving shaft a push pin moved longitudinally in bearings in the frame of the
machine by said cam, a lever turned on its fulcrum in one direction by said push
pin to cause the feeding of the nails to the driver, a spring to return said lever to
its normal position, and a set screw in said lever to engage said push pin, the
amount of the feeding of the nails being adjusted by the adjustment of the said
set screw in said lever, for the purpose set forth.
26. In a nailing machine, a driving shaft, a driver operated thereby, a cam on
said driving shaft a push pin moved longitudinally in bearings in the frame of the
machine by said cam, a lever turned on its fulcrum in one direction by said push
pin to cause the feeding of nails to the driver a spring to return said lever to its
normal position and a set screw through said lever engaging the frame of the
machine to limit and adjust the movement imparted to said lever by said spring
so as to adjust the feeding of the nails, for the purpose set forth.
27. In a nailing machine, a driving shaft, a driver operated thereby, and an
intermitting nail feeding device to feed nails to the driver which device consists
of the following instrumentalities: A grooved feed block through which the
nail forming material is fed, a reciprocating slide, a pawl carried by said slide, a
lever fulcrumed to the frame of the machine and acting on said slide, a cam on
said driving shaft, a push pin mounted in bearing in the frame of the machine
and moved longitudinally therein by said cam against said lever to move it upon
its fulcrum in one direction causing the feeding of the nail forming material
towards the driver by said pawl, and a spring to return said lever to its normal
position, for the purpose set forth.
28. In a nailing machine, a driving shaft, a driver operated thereby, and an
intermitting nail feeding device to feed nails to the driver which device consists
of the following instrumentalities; a grooved feed block through which the
nail forming material is fed, a reciprocating slide, a pawl carried by said slide, a
lever fulcrumed to the frame of the machine and acting on said slide, a cam on the
driving shaft, a push pin mounted in bearing in the frame of the machine and
moved longitudinally therein by said cam against said lever to move it upon its
fulcrum in one direction causing the feeding of the nail forming material towards
said lever by said pawl, a spring to move said lever in the opposite direction to
its normal position, and a spring actuated adjustable detent acting upon the nail
forming material to prevent its return when said lever is returned by said spring,
for the purpose set forth.
29. In a nailing machine, a driving shaft a stock support, connecting mechanism

page_text: between said shaft and support to periodically depress said support to allow the
feeding of the stock, and independent mechanism operating on said support and
operated at the starting and stopping of the machine respectively to raise and lower
said support for the purpose set forth.
30. In a nailing machine, a stock support, a driving shaft, mechanism operated
by said shaft to periodically depress said support to permit the feeding of the
stock, and independent means to finally depress the horn when the machine is
stopped, for the purpose set forth.
31. In a nailing machine, a stock support, a starting and stopping machine, a
driving shaft, connecting mechanism between said support and shaft to periodi-
cally depress said support to allow the feeding of the stock, independent
mechanism operating on said support and governed by the starting and stopping
of the machine respectively to raise and lower said support, and a device control-
ling said independent mechanism and preventing its operation on said support
until such time as will insure the complete operation of the machine for the
purpose set forth.
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.