Improvements in or relating to Jacks or Holding Means for Shoes or the like during Nailing.
Year: 1898

page_text: Date of Application, 4th Oct., 1858-Accepted, 7th Jan., 1899
COMPLETE SPECIFICATION.
Improvements in or relating to Jacks or Holding Means for Shoes
or the like during Nailing.
A communication from abroad by THE MCKAY SHOE MACHINERY COMPANY, of 76,
Lincoln Street, Boston, in the State of Massachusetts; one of the United
States of America.
I, ALFRED GEORGE BROOKES, of 55 and 56, Chancery Lane, in the County of
London, Chartered 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:-
This invention has for its object the production of a novel, simple and efficient
shoe holding jack for use in nailing machines, it being adapted more especially
for holding shoes having what is called spring heels, the apparatus being used
when attaching the sole and heel to the upper, but it may be used when nailing
any usual thin heel to the sole and shoe. The jack is adapted to support a last,
and the last pin is so mounted that it, with the last, may be turned more or less
about a vertical axis, and in so turning the last pin and last, the angular position
or location of the bottom of the last with relation to a horizontal plane may be
varied, as required.
The last pin may also be so supported that it may move, not only vertically,
but also somewhat laterally, the lateral movement of the last pin aiding in
crowding the top of the toe of the last into and upon a suitable toe rest or
support.
The last pin is carried above the usual horn shaft or spindle by or through a
universal or gimbal jointed connection, shown as a main and an auxiliary yoke.
Fig. 1 in side elevation shows a sufficient portion of a jack, containing my
improvements, to enable my invention to be understood, the jack having a last
and shoe mounted upon it in operative position.
Fig. 2 is a right hand side elevation of Fig. 1, with the last and shoe removed.
Fig. 3 is a detail showing the forked slide in which is pivotally mounted the
last pin.
Fig. 4 shows the locking block or device detached.
Fig. 5 shows a modified form of last pin and its collar and part of the sup-
port or auxiliary yoke upon which it will be mounted.
Referring to the drawings, A represents the upper end of any usual horn
shaft or post common to usual nailing machines, and B is part of the usual
nose piece of a nailing machine, it resting upon the work at the point where the
nail is being driven into it, said nose piece having a suitable opening, as b,
through which a nail may be driven into the shoe by usual apparatus.
In Fig. 1, by full lines, the bottom of this nose piece is made flat, but it may

page_text: present a bevelled underside, if desired, as shown by dotted lines in Fig. 1,
that depending upon the particular work to be done.
The upper end of the horn shaft or post has secured to it by a suitable screw C
the split hub of a main yoke C2, said yoke at its lower end having suitable
pivots, shown as stud screws C³, which enter and serve as pivots for a ring D.
This ring has pivotted to it loosely, as by stud screws D¹, an auxiliary yoke D²,
provided at its upper end with a hole d which is bored therethrough at an
angle with relation to to the centre of said horn shaft.
The ring D is provided with suitable stops, as D³, which, as the auxiliary
yoke D2 turns in one or the other direction about the stud screws DI, meet the
yoke, the stops thereby limiting the extent of movement of the said auxiliary
yoke D2 on or with relation to the tipping ring D.
The diagonally bored hole d of the auxiliary yoke receives a collared sleeve d'
which is also bored diagonally or angularly as at d with relation to the centre
of said sleeve, said diagonal bore receiving, it may be, the shank of a forked
slide d, the lower end of said shank having fixed to it, by a suitable screw,
a washer or plate 5 which limits the range of upward movement of said shank
under the action of a spring e surrounding the upper end of the said sleeve and
acting against the shoulder of the forked slide, said collar preventing the shank d³
from being lifted from the sleeve when the shoe is not acted upon by the nose
piece, the rotation of the sleeve d in the yoke varying the angularity of the last
pin.
The narrow neck e¹ of the forked slide d is embraced by a U-shaped locking
block or device 2, shown in Fig. 4 the top of which is represented as concave
and provided with a series of teeth, said block resting loosely in the fork with
its legs against the top of the sleeve d¹.
The forked slide in the drawings, Figs. 1 to 3, has holes in its upper ends
to receive a pin or stud f, said pin also passing through holes in the inner end
of a lever e and through a slot, shown by dotted lines, Fig. 1, in the shank f¹
of the last pin 2, said shank entering a slot in the inner end of said lever e³.
The lower end of the shank of the said last pin has, see Fig. 1, a notch f³,
which is entered by a strut or pin f, the opposite end of which rests against
the bottom or shoulder fō of a slot cut in the end of the lever e³.
The lever e has, as shown, a plurality of open hubs e*, either of which may
receive a rod h provided at its upper end with a toe rest h, and said rod may
be put into either one of said open hubs and be there secured fixedly by a set
screw h2, and in either of the adjustments of said rod, the toe rest preparatory
to fixing it in position, may be made to point either to the right or to the left
as may be desired, thereby greatly increasing the range of adjustment of the
said toe rest to lasts and shoes of different lengths.
Pressure on the fore part of the last transmitted through the toe rest and the
lever causes the strut or pin f to act on the shank of the last pin, turning
the last pin so that the closeness of the contact of the upper on the last with
the toe rest is augmented.
The lever has a segmental surface f6 provided with teeth, and when the last
pin and said lever are depressed, as when the upward pressure of the horn
shaft is operating to force the sole or heel of the shoe against the nose piece, the
fork d, is depressed, causing the teeth of the segmental part f of the lever e
to meet and engage the locking device which is supported by the sleeve d',
against depression, and the said lever is temporarily locked in place holding
the shoe at the desired or necessary inclination.
In the operation of driving the nails into the shoe, heel, or sole, the horn shaft
is lowered after each nail is driven to thereby enable the usual feeding means
to engage and move the shoe the proper distance to receive another nail, and if
necessary, the operator at any time when the horn shaft is depressed for feeding,
may engage the lever by hand and turn the same to change the inclination
of the last pin, and as the horn shaft rises, preparatory to the driving of another

page_text: nail, the locking device will engage the segmental toothed portion of the lever e³
and again hold said lever in a fixed position with the heel or sole at the proper
inclination.
This provision of adjusting the inclination of the last pin is essential, in order
that the nail being driven may always be inserted at the proper angle into the
heel or sole, no matter what may be the particular inclination or contour of
the heel or sole.
As a modification, the last pin h, see Fig. 5, may be inserted directly into the
diagonally bored hole of the collar do, the said collar, whenever the clamping
screw e¹ is unloosened, being turned, thus changing the last pin as to its inclina-
tion from a vertical plane as may be desired.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be parformed, I declare that what
I claim is:-
The improvements in jacks, or holding mechanism for nailing machinery
especially designed for use in the manufacture of boots and shoes consisting
of:
1. The use in a jack for nailing machines, of a last holding pin, a diagonally
bored sleeve to receive said pin, and means to support said sleeve so that it may
be rotated to vary the inclination of said pin in said support more or less out
of a vertical position, substantially as described.
2. The use in a jack for nailing machines, of a horn shaft, an auxiliary yoke
or support sustained above it and provided with a hole bored diagonally therein
with relation to the centre of said horn shaft, and a sleeve placed in said
diagonally bored hole, a last-holding pin, and a shank carrying it, said shank
entering loosely the diagonal hole of said sleeve, the rotation of the sleeve in
said support varying the angular position of the last pin to thereby more or less
incline the sole of the shoe supported on said last, substantially as described.
3. In a shoe holding jack, the use with a forked slide having a shank, and
a diagonally bored sleeve to receive said shank, of a yoke or support having a
diagonally bored hole to receive said sleeve, said sleeve being rotatable in said
yoke or support; a spring to support said forked slide in a yielding manner;
a locking device carried by said forked slide; a last pin, and a lever having
segmental teeth to support a last and its shoe, and carrying a toe rest, said pin
and lever being pivoted in said sleeve, pressure on the last carried by said
pin in making the shoe putting the toothed part of said lever into engagement
with said locking device and holding the last pin and lever and toe rest firmly
in position, substantially as described.
4. The use with a horn shaft, its attached main yoke, and a ring pivotted on
or with relation to said yoke, of an auxiliary yoke pivotally mounted on said
ring and having a diagonally bored hole; a last pin, and a sleeve bored diagonally
and placed loosely in the hole of said yoke, the rotation of said sleeve placing
said last pin in a position inclined more or less from a vertical, substantially
as described,
5. The use with a last pin having a slotted shank, a lever in one end of which
the said shank is fitted, and a forked slide in which the said lever and shank are
pivoted, of a toe rest mounted on said lever, a last mounted on said last pin and
resting on said toe rest, and means to sustain the said forked slide, substantially
as described.
6. The use with a last pin having a slotted and notched shank, and a forked
slide, and a lever having a connected toe rest, of a strut or pin located between
the said lever and the notched shank of the last pin, to operate substantially as
described.
7. The use with a last pin, and forked slide having a shank in which said
pin is mounted to tip, of a sleeve having a diagonally bored hole to receive
the shank of said slide, and means to sustain said sleeve loosely, whereby by

page_text: .
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rotating said sleeve in its sustaining means the angular position of the last pin
may be changed at will, substantially as described.
8. The use with a last pin, and forked slide in which said pin is mounted to
tip, of a sleeve having a diagonally bored hole to receive the shank of said
slide, means to sustain said sleeve loosely, said sleeve being rotatable
in its sustaining means to change the angular position of the last pin; and a
spring surrounding the shank of said slide to normally keep said slide elevated,
substantially as described.
9. The use with a last pin, and forked slide having a shank in which said
pin is mounted to tip, of a lever pivoted between the forked upper end of said
slide, and having a series of teeth arranged in the form of a segment, a sleeve
having a diagonally bored hole to receive the shank of said slide, means to sus-
tain said sleeve, the said sleeve being rotatable in its sustaining means to change
the angular position of the last pin, a spring surrounding said shank and serving
to normally keep said slide elevated, and a locking device to engage the toothed
part of said lever, to thereby hold it in place, substantially as described.
10. The use in a forked slide having a shank, a last pin, and a toothed lever
mounted in said forked slide, of a toothed locking block mounted loosely in said
slide to engage the teeth of said lever when the last pin and the toothed end
of said lever are depressed; and a sleeve in which the said forked slide enters,
and means to sustain said sleeve, substantially as described.
11. The use with a forked slide having a shank, a last pin, a lever mounted
in said forked slide and provided with teeth, of a toe rest adjustable on said lever,
and a toothed locking block to engage the teeth of said lever when the last pin
is depressed, a sleeve having a diagonally bored hole to receive the shank of
said forked slide, and means to sustain said sleeve, substantially as described.
12. The use in a shoe holding jack, of a lever provided with a toe rest, means
to sustain one end of said lever, a movable last pin sustained by a holder mounted
loosely at one end of said lever, and a pin or strut co-operating with said holder
and lever, to operate, substantially as described.
13. The use with a forked slide having a shank provided with a stop to limit
its upward movement, and a guide for said shank, of a spring interposed between
a shoulder of said forked slide and said guide, to normally keep said slide
elevated, a lever having a toothed segmental part, a toe rest supported by said
lever, a last holding pin mounted in said lever and adjustable therein, a locking
device made as a toothed block sustained loosely in the fork of said slide, said lock-
ing device being stopped by contact with the guide in which works the shank
of said forked slide, the further descent of said forked slide, after the arrest
of the said locking device, causing the toothed part of said lever to engage said
locking device and lock the last holding pin and toe rest firmly in position,
I substantially as described.
Dated the 3rd day of October 1808