improvements in Nalling Machines Used in the Manufacture of Boots and Shoes.
Year: 1885

page_text: improvements in Nalling Machines Used in the Manufacture of
Boots and Shoes.
I, STILLMAN WILLIAMS ROBINSON, professor of University at Columbus, County'
of Franklin, State of Ohio, United States do hereby declare the nature of my
invention for IMPROVEMENTS IN NAILING MACHINES USED IN THE MANUFACTURE
OF BOOTS & SHOES and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
This invention in Mechanism for Uniting the soles to the uppers in Boots and
Shoes by means of a wire like material, relates to and is an improvement upon the
machine described in British Patent N° 6941 granted April 29 1884 and to which
reference may be had, the object of my invention being to simplify the construction
and operation of the said parts, whereby the wire may be more accurately driven,
and whereby the horn may be raised and lowered automatically, and the shoe or
boot be more accurately fed over the horn.
In the patent referred to, the grippers which grasp the wire to drive it into the
stock on the horn, take hold of the wire at a considerable distance above the presser
plate or nose and at a point above the detaining jaws or detents, and owing to the
fact that the wire is grasped so far from its end when driven into the stock, the
wire is frequently crippled.
To avoid this difficulty the grippers have been placed below the detaining jaws
or detents and so as to hold the wire close down to the end of the spindle as the
wire is driven into the stock and to readily and easily operate the grippers, I have
provided a loose cam ring which coöperates with tappets or projections forming part
of a tappet ring or connected with the working head in such a manner as to sooner
or later arrest the rotation of the cam ring with the spindle and grippers, the arrest
of the cam ring causing the grippers, the backs of which rest against the inner side
of the cam ring, to be forced toward each other and into the slots of the spindle
against the wire.
One feature of this invention consists in a partially rotating slotted spindle
provided with wire gripping devices and a loose cam ring surrounding the said
spindle, combined with stops or tappets to arrest the rotation of the cam ring and
cause the grippers to thereafter engage the wire and drive it into the leather.
:
My invention also consists in a nailing machine for boot and shoe work,
containing the following instrumentalities, viz:-a horn or support for the boot
or shoe, a slotted spindle, a presser plate or nose, toothed grippers extended into
the slots of the spindle and holding the wire near the lower end of the spindles,
a uniformly reciprocating working head to effect the movement of the grippers

page_text: .
longitudinally in the said slots; a loose cam ring acting, when arrested, to force
the grippers into the said slots, to grasp the wire; and a tappet ring or equivalent.
stops to arrest the rotation of the said tappet ring, to operate substantially as will
be described.
Also, in a machine to drive wire into boots and shoes, a horn or support for the 5
boot or shoe, a slotted spindle, a presser plate or nose, detaining jaws or detents,
toothed grippers arranged in the slots of the spindle below the detaining jaws or
detents, a uniformly reciprocating working head, a tappet ring connected therewith,
and gripper suspending devices supported by the tappet ring, combined with a loose
cam ring surrounding the slotted spindle and grippers and rotating with the spindle 1
for part of its rotation, the arrest of the said cam ring before the arrest of the
spindle in the oscillation or partial rotation of the spindle causing the grippers to
be moved into the slots of the spindle, to grasp and hold the wire while it is being
driven, substantially as will be described.
Also, in a nailing machine, a horn a presser plate or nose, wire cutters therein to 1
cut off the wire close to the material resting upon the horn after the said wire has
been driven into the material, levers to actuate the cutters, a slotted spindle, wire
grippers arranged in slots in the said spindle, and wire detaining jaws or detents,
combined with a uniformly reciprocating working-head, tappets or stops connected
therewith, and with a loose cam ring surrounding the spindle and grippers therein,
the cam ring actuating the grippers to force them against the wire, as will be
described.
Also, in a nailing machine, a horn, and a vertical reciprocating pitman having a
hook and a rod controller, combined with hooked rods joined with an elbow lever,
the latter connected with a wedge block and a lever connected with the horn and
spindle, the parts operating to lift the horn at the proper time to permit its
descent for the purpose to be specified.
Also, in a nailing machine, a uniformly reciprocating working-head made as
a sleeve, and a slotted spindle to contain the wire, and grippers moved vertically by
the working-head, combined with an interposed sleeve having at its lower end a
bearing plate and an attached pressure plate or nose as will be described.
Also, in a nailing machine, a sleeve provided at its lower end with a bearing
frame having pins or studs, and cutter carrying levers geared together and mounted
upon the said pins or studs, and cutters to sever the wire, combined with a rotating
spindle and projections thereon and an attached sliding bar provided with teeth to
actuate the said cutter carrying levers at the proper times to sever the wire close
to the stock.
Another feature of my invention consists in a feed dog arranged to slide in
a pivoted guide and actuated by a cam rod as will be described.
*Fig. 1, is a front elevation of a machine embodying my improvements.
Fig. 2 is a left hand side elevation of Fig. 1.
Figs. 3 & 4 details of the feed and devices to keep it in proper position with
relation to the edge of the sole.
Fig. 5, is a longitudinal sectional detail of the working-head, presser plate
carrying sleeve, spindle, and cutting mechanism.
Fig. 6 a partial section of Fig. 5 in the dotted line x.
Fig. 7 a section in the line x²x².
Fig. 8, is an underside view of the tappet ring to be described which actuates the
cam ring.
Fig. 9 a side elevation partially broken out of the said ring in Fig. 8.
Figs. 10, and 11, a top and side elevation of the cam ring.
Figs. 12 and 13 respectively upper and inner side views of the gripper carriers.
Fig. 14 a side elevation of one of the grippers.
Figs. 15 and 16 show an inner side view and section of one of the wire detaining
jaws.
Fig. 17. is a detail in side elevation of the spindle head,

page_text: operating them.
Fig. 19 a section of Fig. 18 in the dotted line y-y.
Figs. 20 to 22 details of the cutting mechanism.
Fig. 23, a top view of the presser plate or nose.
Fig. 24 is an underside view of the collar fast upon the lower end of the spindle.
Fig. 25, a detail to illustrate the devices for rotating the spindle.
Fig. 26 a detail of the shoe feeding device.
Fig. 27 a rear side elevation of the rod controller.
Fig. 28, a detail to be referred to.
The frame work A, of the machine of proper shape to support the various parts,
is provided with suitable bearings for the main shaft A' having fast upon it two.
pulleys A A³, which receive a driving belt, the difference in the diameter of the
said pulleys enabling the machine to be run at a faster or slower speed.
The shaft A¹ has at its inner end an offset A* provided with a crank pin A³ that
enters a hole in the end of the knuckle piece A6, the said crank pin also passing
through a hole made in the pitman B¹, which at a point below the crankpin A* is
pivoted or jointed by a pin 2 directly to a collar or head 4, which is attached to or
forms part of the upper end of the working head D, so that the pitman imparts a
uniform reciprocating movement to the working head, whatever may be the thick-
ness of the stock, as in my patent referred to.
The knuckle-joint piece has a backward extension, see Fig. 25, which by a
vertical pin a is connected with one end of a yoke a³ having its fulcrum upon a
vertical rod as held rigidly by the frame work Å.
The free end of the yoke a' bent around to the front of the machine, has pivoted
to it a link a bored at its end farthest from its yoke to embrace loosely and slide
on a pin as held in ears of a collar C, fixed by screws 6 and spline 6' upon the
hollow oscillating spindle B made in parts as will be described, through which and
the parts B, B7, within it are passed the wire or fastening material w which is to
be inserted into the sole and upper and as herein shown the said wire is then
partially turned therein, as also described in the patent referred to.
The rotation of the sbaft A¹ through the end of the knuckle-joint piece A°
causes the yoke a² to slide up and down upon the fulcrum pin a³ and the link a' to
slide on the pin a, and at the same time the said crank-pin and knuckle-joint piece
cause the yoke a² to be vibrated about the fulcrum pin a³ as a center, thus rotating
the spindle when desired for about a quarter turn in either direction as will be
described.
The presser plate carrying sleeve e, interposed between the spindle B and the
working head D has a collar 6, screwed upon its upper end, see Fig. 5, which
is jointed to a lever d having its fulcrum upon a link 6' in turn pivoted at 63 upon
an arm b' of the frame work.
The lever d is normally held down by a spring 65 attached to an ear 6º and the
spring is joined by a link 5, with the said lever, the collar 6 of the sleeve e being
thus normally kept pressed against the top of the working head D, so that the
sleeve e rises with the working head, but the descent of the sleeve, as will be
described, will be arrested sooner or later during the descent of the working head,
according to the thickness of the stock on the horn.
The lower end of the presser plate carrying sleeve e has attached to or forming
an integral part of it, a bearing plate e¹ provided with pins or studs e³, e³, which
serve as fulcra for the working levers or arms E, E¹, with which are adjustably
connected the blades or cutters 7, 8, see Figs. 5 and 18, which act to sever the
fastening material after the end thereof has been inserted into the stock resting on
the horn.
The lower arms or ends of the rocking levers E, E¹, are forked or provided with
ears for the reception of the cutter holding clamping blocks E³, E, each being
bored and split and provided with a clamping screw 10, for the reception of one of
the cutters.

page_text: :
To adjust the cutters longitudinally, each block is provided with a hole in which
is placed the transversely slotted plug a¹ which is acted upon by the adjusting
screw 12, the inner ends of the plug bearing against the rear end of the shank of
the cutters 7 or 8, the slot in the plug affording a passage for the pin 17 which
supports the said block in its lever E or E¹.
Portions of the rocking arms E, E are provided with teeth, see Fig. 18, so that
they are compelled to move together, the arm E, deriving its movement from the
arm E¹, the latter having teeth 18, which at the termination of each partial rotation
of the spindle B, are acted upon by the teeth of the rack-bar E³ fitted to slide in
guides in the bearing plate el, a screw 14 inserted through the said bar and
extended into a slot 15, in the plate e', guiding the said rack-bar during its
reciprocation in opposite directions by the projection 16, formed by cutting away a
part of the collar B³, forming part of the lower end of the spindle B, the said
pin 14, being notched or cut away to serve as one of the corners against which the
projection 16 strikes when the levers E, E¹, are turned to separate the cutters.
The presser plate e is countersunk at its upper side as at e to receive the conical
lower end or nose 18 of the spindle head B7, and below the surface against which
the conical end of the spindle head rests, the said presser is provided with two
holes, see Figs. 5 and 23, which receive and guide the cutters or blades 7, 8, the
presser plate, when the cutters are operated to sever the fastening material close to
the stock, being held stationary.
The collar B³, at the lower end of the spindle B serves as a shoulder against
which the lower end of the presser plate carrying sleeve e bears, the latter when
permitted to descend under the action of the spring 65, and lever d, as is the
case while the working head D is being depressed, descending with the said sleeve
until the presser plate e meets the stock on the horn H, further downward move-
ment of the working head causing the grippers then grasping the wire to drive the
same into the stock.
'
The spindle B, made as a sleeve, is provided with a removable hollow center
piece B having a passage B³ for the wire w. The spindle near its upper end, has
a shoulder which receives against it the collar 19 of and supports the center
piece B5, the latter being prevented from rising therein by the hollow nut 20.
The center piece is screw threaded at its lower end for the reception of the
head B of the spindle B containing the wire grippers d³, their actuating devices,
and the wire detainers, as will be described.
The upper end of the spindle head is inserted into the open lower end of the
spindle B until a projection 70, thereon enters one of the notches 71, see Fig. 24, in
the collar B, the said projection and collar preventing rotation of the spindle head
in the spindle, and thereafter the center piece thrust down through the spindle is
ścrewed into the spindle head, but before the spindle head is so applied to the
spindle, the head is provided with all the devices to be carried by it.
The spindle head B7 is slotted near its lower end from side to side for part of its
length, see Fig. 5, to form spaces for the reception of the toothed wire-grippers d³,
which grasp the flat sides of the wire w, the said grippers, one of which is shown in
Fig. 14, having at their upper ends hooks 22, and at their lower ends projections 23,
the grippers being fitted to slide freely in the slots of the said spindle head in which
they are placed.
The spindle head B7, at a point above the slots referred to is slotted or cut
through at right angles thereto as at 72, see Fig. 17, to form openings for the
reception of the two serrated or toothed detaining jaws or blocks d³, one of which
is shown in Figs. 15 and 16, said jaws placed in the said opening as in Fig. 5, being
acted upon at their rear sides by flat springs d', see Fig. 6, interposed between them
and the spindle head B', the said springs causing the said jaws, which preferably
áre serrated, to act against the flat sides of the fastening material or wire or
to prevent the same from being lifted while the grippers d³, relaxed from the
fastening material, are being raised in unison with the working head D, to obtain a
new hold on the wire and thrust or force the end thereof into the stock on the horn H.

page_text: '
The detaining jaws d³, at their rear sides are provided with projections 65, see
Fig. 16, which come to a bearing against the sides of the slot 72, whenever any
severe twisting strain in the wire tends to reverse it between the said jaws, and to
prevent the jaws from coming together when the wire is absent, one of the said
jaws is provided with pins 66, which at such time abut against the opposite jaw.
The working head D is slotted near its lower end as at 42, see Fig. 6, to receive
the screw 43, which is first extended through a washer 44, the end of the said
screw entering the tappet ring G and confining the same in fixed position with
relation to the said head, the adjustment of the screw 46, in the slot 42 altering the
position of the said tappet ring G with relation to the working-head and the
oscillating stroke of the spindle and spindle-head, so as to cause the wire grippers
to be thrown into engagement with the wire with more or less force, the farther
the screw from the right hand end of the said slot viewing Fig. 3, the more severe
will be the grip of the grippers upon the wire.
The lower end of the tappet ring G has two tappets 45, see underside view and
elevation Figs. 8 and 9, and at its upper end, the said ring has an inwardly
extended shoulder or flange 47 which is grooved at opposite points for the passage
of the hooked upper ends of the gripper carriers G shown separately in Figs. 12
and 13.
The gaps or grooves in flange 47 are filled in with flush blocks 46 which are
attached to the tappet ring by screws 52 after the hooks 48 of the gripper carriers
have been passed above the flange 47, the flush blocks enabling the formation of a
smooth race on which the hooks 48 slide as they are moved in the arc of a circle by
the spindle and spindle head in their oscillation.
The lower ends of the gripper carriers G' are made segmental in shape to take
an extended bearing in the tappet ring, and are provided at their concaved sides
with hooks 49 that enter longitudinal grooves of the spindle head as also do the
portions 53 of the said carriers, the portions 53 and the projection 49 both sliding
up and down in the said grooves in unison with the tappet ring G and working-
head D.
The wire grippers d' provided at their upper ends with the hook 22, and at their
lower ends with shoulders 23, are extended up through a cam-ring 55 provided
externally with two projections 56 and internally with two cam surfaces 57.
To assemble the parts, the wire grippers d' are placed in the cam ring 55, and
the latter on the spindle with the wire grippers in the longitudinal slots of the
spindle head, and the hooks 22 of the grippers extended above the said cam-ring 55,
are made to engage the projections 49 of the gripper-carriers supported by the
tappet ring, the cam-ring thus resting loosely upon the shoulders 23 of the grippers
and just below but free from contact with the lower end of the tappet ring G.
The cam-ring acts to keep the wire grippers in the longitudinal slots of the
spindle head, and as the cam-ring is rotated on the spindle, the cam surfaces 47,
acting on the grippers, force them against the wire.
The tappets 45 of the tappet ring G enter the wider spaces 58 between the
projections 56 of the cam-ring 55, and as the cam-ring is partially rotated with
the spindle head, its corners 59 or 60, according to the direction of rotation of the
spindle and collar, strike the tappets 45, and the cam-ring is stopped thereby while
the spindle continues to turn, which results in moving the cam-ring on the spindle,
the grippers being forced toward each other or being permitted to loosen their grip
on the wire according to the direction of rotation of the spindle. when the cam ring
is arrested by the tappets 45.
From a little before the end of the down stroke of the spindle to the time that
the wire is cut off, the shoulders 59 of the cam ring rest against the tappets 45, and
immediately after the wire is severed, the rising spindle commences to turn in the
direction of the arrow next to it, see Fig. 25, carrying the cam-ring 55 with it, and
just before the spindle approaches its highest point the corners 60 of the said cam-
ring are brought against the tappets 45 and by the time that the spindle reaches

page_text: its highest position, its continued further rotation causes the cam ring resting
against the said tappets to be turned on or with relation to the spindle in the
direction to compel the cams 57 of the cam ring to force the grippers d³, inward
upon and so as to grip the wire, the cam-ring and tappet ring occupying substan-
tially the same position until the spindle reaches nearly its down stroke, and during
the lower stroke the spindle is rotated in the direction opposite the arrow Fig. 25,
causing the movement of the cam ring in the proper direction to bring its projec-
tions 59 against the tappets 45, when during a slight further movement at the
extreme lower part of the stroke, the grippers are released.
The upper end of the spindle B is provided with a projection ƒ with which a
spindle arresting device, shown as a pivoted latch f may be engaged when it is
desired to arrest the descent of the spindle, as is frequently the case as when for
instance the horn is not provided with a boot or shoe, or when the wire is to be
projected down into the nose and through the same preparatory to starting the
machine.
The pitman B¹, at or near its lower end has a hook, see fig. 2, which during its
ascent is adapted to catch upon the upper hooked end of either the trip rod for
the horn lifting rod f³, to thus effect the lowering and raising respectively of the
horn H through the horn lifting mechanism to be described.
When the trip rod f' is lifted to lower the horn H, the three armed lever f*, see
Fig. 2, to which the said rod is connected, is turned upon its fulcrum so that its
arm 30 in engagement with the wedge f' is withdrawn from below the lower end
of the horn spindle f®.
The upper end of the horn-spindle is provided with an amular groove see fig. 1,
which is entered by the forked end of the lever 31, with which the lifting rod f³
is connected.
The rods and f³ are moved into position to be engaged, the one or the other,
by the hook of the pitman B¹ according as it is desired to lower or raise the horn
by means of a rod controller g pivoted at 32, the said controller being connected at
its rear end to a spring g¹ which acts normally to cause the rod controller (provided
at its rear side, see Fig. 27 with two sets of pins 83, 84, between which are placed
respectively the rods f³ and ƒ³) to keep the trip rod f' in the range of the hook of
the pitman B', to depress the horn as the working head reaches its most elevated
position.
The rod controller g is joined by a wire g², or other suitable connection, with a
treadle or lever g³ pivoted at 9' so that the operator, by depressing the said treadle
and operating the rod controller is enabled to engage the lifting rod f³ with the
hook of the pitman B¹ to lift the horn H into position after the boot or shoe has
been placed upon it. The first part of the upward movement of the rod f³ and the
lever 31 lifts the horn to its proper level, and as the lever 31 completes its move-
ment, the link g³ connected there with and with the three armed lever f*, turns the
latter in the direction to cause the arm 30 of the said lever to force the wedge ƒ³
under the lower end of the horn spindle, thus locking the same in position positively
before the presser plate comes down upon the work.
Refering to the feeding mechanism, the frame work, see Fig. 26, has attached to
it, at its rear side, a sleeve-like bearing h which receives a shaft h' provided with
a handle h³, by which to turn it, the other end of this shaft having an eccentric
pin or projection h³ which, by the partial rotation of the said shaft, serves as a back
stop or rest against which may act the lower end of a cam rod h pivoted at h³ on
a lever 33, the inner end of which, see figs. 2 and 25, and 28, is pivoted to the
pitman B¹, the descent of the said cam rod in contact with the feeding dog m,
normally held back by a spring m x, causing the said dog to be moved forward
toward and against the edge of the shoe or boot on the horn H.
The position of the eccentric pin ha determines, it will be understood, the position
of the front end of the feeding device with relation to the nose and tip of the horn;
thus enabling the operator to control the insertion of the fastenings at a greater or
less distance from the edge of the sole.

page_text: The rear end of the feeding dog m is placed in a guide block m³ having a pivot
pin m which is inserted in the bearing h, the said pivot pin being parallel with the
shaft h¹.
In the slot in the frame-work in which the feed dog is made to vibrate
horizontally I have placed an L-shaped dog m³ pivoted at 65, the rear beveled
side of which is operated upon by the lower wedge shaped end of a lever 36, see
fig. 25, pivoted at 38, upon the frame work, the upper end of the said lever being
connected by a pin 37 with the lever 33, before described, which has its front end
pinned to the pitman B¹, that operates the working head D, the said lever 33
carrying it will be remembered, the cam rod h*.
A piece 67 attached to an arm of the frame work and provided with two pins or
studs limits the movement of the rod controller g.
At the outer side of the frame work, near the handle h³, see fig. 1, are two
suitable stops 68 and 69 to limit the movement of the said handle.
To vary the feeding movement of the feed dog m, I have pivoted upon the front
of the machine a hand lever n the lower end acting against the dog mo referred to,
to arrest its backward movement and consequently of the feed dog m sooner or
later to thus correspondingly lessen or increase the effective stroke of the lever 36
upon the inclined back of the dog m³ in its next movement.
The lever n placed between the stops 75 and 76 may be moved by hand while
the machine is in motion, to thereby vary the spacing between the fastenings as
may be desired.
The stops 75 and 76 coöperating with this lever n are made adjustable see Fig. 1;
so that the operator may have one stop for spacing about the fore part, and another
for spacing in the shank, moving the lever n in contact with first one and then the
other of the said stops.
The spool upon which the threaded fastening material wis wound is composed of
two side plates held together by suitable bolts, the flanges of the heads being
preferably slotted or provided with holes to enable to operator to observe the
quantity of wire thereon.
The spool holder o¹ is a concaved bracket having suitable flanges to receive the
spool, the bracket being open in suitable manner at its underside for the passage of
the wire w from the spool down through the spindle.
To produce the proper amount of friction upon the wire I have provided the
spool holder with a friction pad o³ operated upon by a spring o³, the pad resting on
the wire.
A stop p may be placed on the rod f³ to enable the forward end of the feed
dog m to be held down next to the tip of the horn H when the same is in
its lowest position, so that the edge of a shoe when applied to the horn comes
directly against the end of the feed dog, and as the horn is raised the rod f³ also
rises moving the end of the feed dog m then in contact with the edge of the sole,
up into substantially horizontal position, after which the feed dog is moved to feed
the shoe,on the horn.
The working head D in this my present invention receives within it the nose or
presser carrying sleeve, and the spindle is placed centrally with relation to and has
its bearings in the said sleeve, which results in a very compact arrangement of
parts.
The cutters are operated positively in both directions, and the horn is raised and
lowered at the proper times mechanically.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, 1 declare that what
I claim is
1st A partially rotating slotted spindle provided with wire gripping devices, and
a loose cam ring surrounding the said spindle, combined with stops or tappets to
arrest the rotation of the cam ring and cause the grippers to thereafter engage the
wire and drive it into the stock, substantially as described,

page_text: 2d A nailing machine for boot and shoe-work containing the following instru-
mentalities, viz:-a horn or support for the boot or shoe, a slotted spindle, a presser
plate or nose, toothed grippers extended into the slots of the spindle and holding
the wire close to the lower end of the said plate or nose; a uniformly reciprocating
working head to effect the movement of the grippers longitudinally in the said
Blots; a loose cam ring acting when arrested to force the grippers into the said slots
to grasp the wire, and a tappet ring or equivalent stops to arrest the rotation of the
said tappet ring, to operate substantially as described.
3d In a machine to drive wire into boots and shoes, a horn or support for the
boot or shoe, a slotted spindle, a presser plate or nose, detaining jaws or detents;
toothed grippers arranged in the slots of the spindle below the detaining jaws or
detents, a uniformly reciprocating working-head, a tappet ring connected therewith,
and gripper suspending devices supported by the tappet ring, combined with a
loose cam ring surrounding the slotted spindle and grippers and rotating with the
spindle for part of its rotation, the arrest of the said cam ring before the arrest of
the spindle in the oscillation or partial rotation of the spindle causing the grippers
to be moved into the slots of the spindle to grasp and hold the wire while it is
being driven, substantially as described.
4th In a nailing machine, a horn a presser or nose, wire cutters therein to cut off
the wire close to the material resting upon the horn after the said wire has been
driven into the material, levers to actuate the cutters, a slotted spindle, wire
grippers arranged in slots in the said spindle and wire detaining jaws or detents,
combined with a uniformly reciprocating working-head, tappets or stops in connec-
tion therewith, and with a loose cam ring surrounding the spindle and grippers
therein, the cam ring actuating the grippers to force them against the wire substan-
tially as described.
5th In a nailing machine, a horn and a vertical reciprocating pitman having
a hook, and a rod controller,' combined with hooked rods joined with an elbow
lever, the latter connected with a wedge block and a lever connected with the horn
and spindle, the parts operating to lift the horn at the proper time to prevent its
descent, substantially, as and for the purpose specified.
6th In a nailing machine, a uniformly reciprocating working-head made as a
sleeve, and a slotted spindle to contain the wire, and grippers moved vertically by
the working-head, combined with an interposed sleeve e having at its lower end a
bearing plate and an attached pressure plate or nose, substantially as described.
7th in a nailing machine, the sleeve e, the bearing fraine e¹ at its lower end
provided with the pins or studs e², e³, and the cutter carrying levers geared
together as described, and the cutters, combined with means to actuate the
said levers to operate the cutters and sever the fastening material, substantially
as described.
'
8th In a machine to unite soles and uppers, the feed dog m, its pivoted guide,
and the shaft h and its eccentric pin, combined with the cam rod h' and means
substantially as described to operate it.
9th The feed dog m, the pivoted guide, the cam rod, an adjustable pin or support
therefor, and the inclined dog m³, combined with a lever to move the said dog to
effect the lateral movement of the feed dog, substantially as described.
我
,