Improvements in Machinery for Nailing the Soles and Heels of Boots and Shoes.
Year: 1894

page_text: Date of Application, 5th Sept., 1894
Complete Specification Left, 5th June, 1895-Accepted, 27th July, 1895
[Communicated from abroad by THE KEATS MASCHINEN GESELLSCHAFT
(a Joint-Stock Co.), of No. 10 Schäfergasse, Frankfurt on Main, in the
Empire of Germany.]
Improvements in Machinery for Nailing the Soles and Heels of
Boots and Shoes.
I PHILIP ARTHUR NEWTON of The Office for Patents, 6 Bream's Buildings,
Chancery Lane in the County of London, Patent Agent, do hereby declare the
nature of this invention to be as follows:-
The present invention relates to that class of machinery for nailing the soles
and heels of boots and shoes, wherein the nails used are pieces of wire severed, as
required, in the machine from a length drawn from a reel.
In a machine constructed according to this invention, the wire which is to be
used for nailing is drawn from a reel suitably placed, and passed downwards
through a channel extending longitudinally throughout the length of a vertically
arranged rod. This channel, for part of its depth, is widened to receive a bar
which serves to confine the wire within the channel.
The said bar terminates below in a ring which embraces and supports a pair of
gripping jaws tapered upward to correspond with an internal cone bored in the
extremity of the channelled rod before mentioned.
Enclosing the lower portions of this rod and bar, and the gripping jaws, is a
sleeve, closed at the lower end, save for a central hole, which permits the passage
of the wire. The top of the sleeve is provided with an annular cover, through the
middle of which the channelled nail rod passes.
The annular cover carries a pair of pivotted gripping jaws, which project into
slots in the channelled rod, so as to grip the wire. A compression spring is
provided between the tail of one of the gripping jaws and a lug or projection
fixed on the bar which lies in the channelled rod aforesaid. The chanuelled rod,
with all the parts connected therewith, is capable of reciprocation in suitably arranged
guides, carried by a framing, and the movement is, or may be, communicated
thereto by means of a bowle engaging with a cam groove cut in the face of a
suitably driven rotating disc.
The up and down movement of the channelled rod is utilized to drive the wire
nail into the work, suitably held beneath. To actuate the gripping jaws, however,
both for holding the wire while being driven, and for feeding a new length after
the driven nail has been severed, a differential movement between the channelled
rod and the bar lying therein is required.
This differential movement is effected, in one direction, by a pivotted lever
adjustably carried by the channelled rod, the nose of which lever bears on the
head of the bar lying in the channelled rod, and in the other direction, by
the compression spring before mentioned. The said pivotted lever is rocked, at the
proper moment, through the agency of a cam on the driving shaft, thereby com-
pressing the spring, which afterwards returns the parts to their former position.
Cams on the driving shaft are also provided for actuating levers which carry and
operate the knives for cutting the wire nail from the continuous length, after being
driven into the work.

page_text: Means are provided for feeding the work as the nailing progresses, consisting of
an adjustable jointed pusher, to which a to and fro, and a sideway movement is
given, by means of a rotating cam working in a notch, and springs which hold the
said pusher in contact with the said cam.
Dated this 5th day of Santambon 1001
NEWTON & SON,
Agents for the Applicant.
Improvements in Machinery for Nailing the Soles and Heels of
Boots and Shoes.
I PHILIP ARTHUR NEWTON of The Office for Patents, 6 Bream's Buildings,
Chancery Lane in the County of London, Patent Agent, 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 :-
The present invention relates to that class of machinery for nailing soles or heel
lifts to boots and shoes, wherein the nails used are pieces of wire severed, as
required, in the machine from a length drawn from a reel.
This improved machinery is shown in the annexed drawings in Figs. 1 to 9.
Figs. 1 and 2 show the machine complete in front and side elevation.
Fig: 3 show the head of the machine drawn to an enlarged scale, and partly in
longitudinal section; and
Fig. 4 shows in partial plan view the arrangement of cams for operating the
cutting knives.
Figs. 5 to 7 show in detached sectional views various parts of the above
mechanism.
Figs. 8 and 9 show, detached, in plan and sectional elevation, on an enlarged
Ecale, the feed mechanism for the heels of boots and shoes.
The machine is one of that class which presents the wire end vertically to the
parts to be nailed, and for that purpose is provided with a vertically-moving
gripper arrangement for the wire. The wire is forced into the sole or heel, and
cut off close to the surface, thus forming a nail.
The construction is as follows:-
On the pillar of the machine is mounted the head 2 (Figs. 1, 2, and 3), which
carries in suitable bearings the main shaft 3. This latter carries upon one end a
fly wheel, and fast and loose pulleys, if the machine is to be driven by power; in
other cases, a crank and treadle may be substituted for the belt pulleys.
On the front end of the main shaft are keyed the cams 4 and 4: The front
cam 4 has a cam groove 5, in which a bowl 6 runs. This bowl is carried by a
block 25, adjustably secured to the wire-feeding rod 7 by a set screw, and the wire
feeding rod 7 (shown in cross section at Figs. 10 and 11) receives a vertical
reciprocating motion from the cam groove 5.
66
As will be seen from these figures, the rod 7 is grooved out to its centre for its
whole length, so as to form a channel down which the wire is fed. At the front of
the channel for the wire, this groove is cut away, or widened, to contain a
pusher" 8. This pusher, which is shown detached in Fig. 7, terminates at its
lower end in a ring, in which are mounted the gripper jaws 9; sloped off at the top,
as seen in Fig. 3. This slope at the top corresponds with an internal cone bored
out in the end of the rod 7, so that when the pusher 8 is drawn up into the cone
of the rod 7, the gripper jaws 9 will close upon and grip the wire. Besides this
gripper apparatus 9, the machine is provided with another pair of gripping jaws 10,
which slip over the wire as the rod 7 rises, and grip it tightly when the rod
descends, acting on the wire when the gripper jaws 9 are open.

page_text: The cams 4 and 4 operate upon bowls 11 and 11' mounted on the levers 12.
These levers, as will be seen from Fig. 12, are so embraced by the bell crank
levers 13, that motion will be imparted to the levers 12, to hold their bowles 11, 11',
against the cams 4, 4', under the influence of the spring connecting them.
The bell cranks 13, Fig. 3, carry on their short limb the knife holders 14, with
the knives 15. These latter have their points inserted in the holes 16, which
are formed in the knife carrier 17. The knife carrier 17 is closed at top by an
internally-threaded cap 18, which carries the above mentioned second gripping
jaws 10.
Enclosed in the lower part of the knife carrier 17 are the guide jaws 19 for the
wire as it is drawn down, the ends of which jaws pass through the ring of the
pusher 8, as seen in Fig. 7, and between the gripper jaws 9, as seen in Fig. 6.
The pusher 8 has a stud 20, which serves, as the pusher rod rises and falls, to vary
the pressure of the spring 21, acting on the moveable gripper jaw 10.
The operation of this machine is as follows:-
The wire from a reel is passed through the channel in the gripper rod 7, and
is held in the same by the pusher 8. It then passes between the gripper jaws 10,
and downwards between the gripper jaws 9, and thence through the guide
jaws 19, which, while the machine is at work, stand close over, or rest on, the
material to be nailed.
Fig. 3 shows a position of the parts in which the rotation of the cams 4, 4',
having brought the bowl 6, and consequently the rod 7, to its lowest position,
a fresh length of wire has just been driven into a heel. In the position of the
cams at this time, the bowls 11 are held at their maximum distance from each
other. The upper ends of the bell cranks 13 have been pressed outwards,
against the tension of the spring 22, and the knives 15 have approached each
other, and cut the wire lying between them short off, flush with the last
heel lift.
By the motion of the left hand lever 12 outwards, a stud or bowl 26 which
it carries acts on the tail of the bell crank lever 23 (fulcrummed on the
block 25), rocking it on its fulcrum 24, and pressing with its shorter arm on
the upper end of the pusher 8. By this action of the lever, the gripper jaws 9
are forced out of the cone in the end of rod 7, and accordingly open themselves
and release the wire from their grip. The pusher rod 8, by means of the stud 20,
in its downward motion compresses the spring 21, and thus jams the gripper
jaws 10 upon the wire lying in the groove of the rod 7.
By the further rotation of the driving shaft, the bowl 6 and the rod 7, which
was previously in its lowest position, will be drawn up by the cam groove 5. The
rise of the rod 7 will carry up with it the knife carrier 17, and the gripper jaw 10,
which will slip over the wire, to take a fresh bite on the wire, and effect the feed.
The spring 22 draws the bell crauks 13, and with them the levers 12, together, so
that the bell-crank 23 is rocked, as before, on its fulcrum 24, but in the reverse
direction, raising its short arm from the pusher rod, and the spring 21 can con-
sequently impart to the pusher rod 8 an upward movement, and lift the gripper
jaws 9 again into the conical recess bored in the end of the said rod, and thus
cause them to close again, after the knife carrier 17 and its dependent parts have
been lifted a certain distance.
By the descent of the rod 7, followed by the knife carrier 17 and gripper
jaws 10 (which tall by their own weight), the wire is again gripped by the
gripper device 9, and driven into the material by the continued downward
movement of the rod 7. During the first portion of the movement, the knives 15
remain open till the rod 7 attains its lowest position, when the knives will be
brought together, and the wire cut off, simultaneously with the release of the wire
from the gripper jaws 9. So long as the knives 15 are not closed, and the
cams 4 and 4 have not forced the bowls 11 outwards, the spring 21 is inactive,
and thus the gripper jaws 10 do not put pressure on the wire, thereby allowing
them to slip on the wire, so as to effect the feed.

page_text: The feed mechanism for advancing and turning the work is driven by the bevil
gear 27 from the main shaft, which operates a cam 29 through the shaft 28 (Figs. &
and 9). This cam imparts a backward and forward, and also a sideway motion
to the pusher bar 30, mounted in guides on the underside of the head of the
machine (see Figs. 2 and 9). In this pusher bar, the feed foot 31 is pivotally
mounted. This latter is under the tension of a spring 32, which always pulls the
pusher back to the starting point. The amount of travel of this pusher bar is
made adjustable by means of the set screw 33. Thus, the material to be nailed
has, in addition to a forward motion, also a sideway motion imparted to it, which
motion is adjustable to any desired degree by means of the set screw 33.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed as communicated to me
from abroad, I declare that what I claim is :-
1. Machinery for nailing the soles and heels of boots and shoes, comprising, in
combination with mechanism for cutting the nails from a continuous length of wire,
a longitudinally reciprocating rod enclosing the wire, a bar for retaining the
wire within the rod, and having a sliding movement with the latter, and also a
movement independent thereof, and gripping jaws for holding and driving the
wire, all arranged and operating as described with reference to the accompanying
drawings.
2. The means for operating the cutting knives herein before described, consisting
of a pair of cams acting on levers 12, which act on spring-controlled knife-carrying
levers 13, as set forth.
Dated this 4th day of June 1895.
NEWTON & SON,
Agents for the Applicant.