Year: 1886

page_text: I, HENRY STOCKMAN, of 1502 Brown Street, Philadelphia, United States of
America, Merchant do hereby declare the nature of my invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:—
My invention relates to last supporting jacks for shoemaker's use and has for its
object the provision of means for throwing the jack body and its contained last,
into different positions, for convenience to the operator, and in means employed to
secure it from dis-placment therefrom.
To these ends the invention comprises in connection, a sub-base secured to the
bench or table, a base that supports the last holding jack, a hinged connection
between the base and sub-base which allows the base to be turned either to the
right or left, and means for holding said base in fixed positions, at any desired
point.
In addition to the above described adjustment, I provide that the jack body
shall be loosely connected to the base, so as to turn freely upon a central pivot,
thereon, in a plane of motion at right angles to the plane of motion of the base,
without reference to the position occupied by the sub-base, & means for securing
the jack body at different desired points of adjustment upon the base.
The invention further contemplates the provision of means which, used in con-
nection with the jack body, allows a last to be instantly placed in position upon,
or removed from, said jack body and in means for holding the last securely in
position when in use.
The invention above set forth is fully herein-after described and specifically
pointed out in the claims.
In the accompanying drawings which form a part of this specification,-
Fig. 1 is a side elevation embodying my improvements,
Fig. 2 is an elevation of the opposite side of the jack,
Fig. 3 represents an end elevation thereof,
Fig. 4 is a longitudinal section through the jack and its attachments,
Fig. 5 is a transverse section showing the base and its attached jack turning to
the right

page_text: Fig. 8 is a bottom plan view thereof,
Fig. 9 is a top plan view of the base,
Fig. 10 is a bottom plan view thereof,
Figs. 11 and 12 are detail views of parts of the jack body, and,
Figs. 13 and 14 represent modified forms of the pivoted supporting bar of the
base.
Referring to the drawings in which similar letters of reference denote similar
parts, A designates the sub-base consisting of a thin plate a of metal, provided at
its side and end edges with downwardly projecting flanges a¹ that bear upon the
bench or table. a designates a slot formed at the middle of the sub-base for
the passage of a locking bar B pivoted to the base a as. hereinafter described.
a³ a³ designate lugs projecting from the lower surface of the sub-base at either
side of the slot a*.
I provide the lugs a³ with screw threaded apertures a' that receive the screw
threaded inner end of a rod C that extends thence, below the part a, through the
flange a¹ and is provided upon its outer end with a winged head c to operate
the rod.
The rod C serves to secure the bar B at different desired points within the slot a²,
and to this end, the inner end of the rod may either bear against the bar B or said
bar may be perforated to receive the end of the rod as shown in figure, 13 and 14.
a³ a designate apertured lugs projecting from the upper surface of the sub-base
at the side thereof, to which is pivotally connected by a rod d, one end of a
frame D the opposite end of which is pivoted to the base E.
The frame D is, in length, equal to the width of the sub-base and consists in
sile rails and transverse rails d', apertured lugs s formed on the ends of said
frame afford passage to the rods by which it is connected to the base and sub-base
respectively.
E designates the base consisting of a thin plate e of metal provided at its edges
with a downwardly projecting flange e¹ which rests upon the sub-base. e³ desig-
nates an aperture formed at the middle of the base to receive the shank of a screw
threaded bolt F which secures the jack body to the base, as hereinafter described.
The bead of the bolt F is square in cross section, is held within a socket c³
formed by flanges e upon the lower surface of the base at each side of the
aperture e and is provided with downwardly projecting lugs f¹ between which is
pivoted the upper end of the adjusting bar B.
e designates strengthening ribs formed upon the lower surface of the plate e.
The Bange e' of the base, is cut away at its sides e e7 for the reception of the
fiame D one end of which is pivoted by a bolt es within the cut away portion e' of
the flange e¹.
By reference to figures 5 and 6 it will be observed that the above described
hinged connection between the base and sub-base permits the turning of the said
base either to the right or left, the respective ends of the frame D becoming in
turn the pivotal point of the base.
I secure the jack body to the base E in the following described manner, viz:
e designates a circular rib formed upon the upper surface of the base E and this
rib has for its center the aperture e² and fits into a circular groove g formed in the
bottom of the jack body Ġ. The groove g has for its center an aperture g¹ formed
through said jack body at the middle thereof.
The upper threaded end of the bolt F projects through the aperture g¹ and
through a boss g³ projecting from the upper surface of the jack body about said
aperture. The boss g² is provided upon its upper surface with cam faces g³ which
engage similar cam faces h formed upon the lower surface of the apertured head
of a cam lever H, placed upon the upper end of the bolt F. F' designates an
adjusting nut upon the bolt above the lever.

page_text: By operating the lever H the jack body may be firmly secured at any point of
its plane of motion, as will be readily understood.
The jack body G comprises a base G¹, a toe standard G having a rib G* at its
lower end and a fixed heel standard G³ having a rounded upper end g³ and a
transverse aperture gº.
I designates a swinging heel standard having a bifurcated lower end, the parts i
of which extend at each side of the standard G³ and are provided with square
apertures to receive the squared portion of a lever J journaled in the aperture g
of the standard G³. The upper end of then swinging standard I is provided with
an aperture to receive a removable pin which is held in place by a set screw i³.
The lever arin J is provided at its free end with a slot j through which projects
through the jack body, a screw threaded bolt K whereby any desired degree of
tension may be imparted to a spiral spring K', interposed, upon bolt K, between
the thumb nut k and lever J.
The spring K¹ operates to hold the free end of the lever J against the upper
surface of the jack body, and, through said lever, the upper end of the swinging
standard forward in the position shown in figure 1, whereby the toe of a Inst,
placed upon said standard, will bear firmly upon an adjustable toe rest or block L
having a bifurcated lower end, the parts of which extend at the sides of, and
engage with vertical grooves m formed in the sides of a casting M baving a sleeved
lower end m¹ which fits upon the toe standard G and a slot m³ that engages the
rib g at foot of said standard.
If desired the upper end of the standard G' may be apertures as shown in
figure 4 to receive a removable pin similar to that employed in connection with the
swinging standard I or said standard may be enlarged longitudinally and operate
in lieu of the casting M, and be provided with a series of apertures to receive an
adjustable toe rest.
I do not limit myself to the exact construction of parts herein shown and
described as I am aware that various modifications may be made therein without
departing from the spirit or sacrificing the advantages thereof.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A last holding jack having a sub-base secured to a suitable support, a base
mounted thereon and a frame interposed between, and hinged respectively to the
base and sub-base, substantially as described.
2. In a last holding jack, a sub-base secured to a suitable support, a base
mounted thereon, a frame interposed between and hinged respectively to said base
and sub-base, and a pivoted holding bar, substantially as described.
3. In a last holding jack, a sub-base secured to a suitable support, a base
mounted thereon, a frame interposed between, extending transversely of, and
hinged at its opposite ends to the base and sub-base respectively, a holding bar
pivoted to the base and extending through the sub-base, and a locking bar
substantially as described.
4. In a last holding jack, a sub-base secured to a suitable support, a base
mounted thereon and a frame interposed between and pivotally connected at its
opposite ends to the base and sub-base, in combination with a jack body having
its plane of motion at right angles to the plane of motion of the base, substantially
as described.
5. In a last holding jack and in combination a sub-base secured to a suitable
support, a base mounted thereon, a frame interposed between and pivotally con-
nected at its opposite ends to the base and sub-base respectively, a holding bar
pivoted at its top to the base, and a last holding jack body, having toe and heel
supporting standards and locking lever, substantially as described.
6. In a last holding jack, a sub-base secured to a suitable support and provided
at its middle with an aperture to receive the base holding bar, and lugs to receive

page_text: a locking rod, in combination with a base having an apertured middle, to secure
the holding bar, and a frame interposed between and hinged at its opposite ends to
the base and sub-base, respectively, substantially as described.
7. In a last holding jack, a sub-base and base, and a hinge connection between
said base and sub-base whereby said base may be turned either to the right or left,
substantially as described.
8. In a last holding jack having a plane of motion at right angles to the plane
of motion of its base, and provided with a toe standard and apertured heel
standard in combination with a removable swinging heel standard, baving a
bifurcated lower end, its operating lever and tension spring, substantially as
described.
9. In a last supporting jack, a holding bar pivoted at its upper end by a
bifurcated headed bolt to the base, and its attached jack body, in combination with
a locking rod journaled in the sub-base, the sub-base and a hinged connection
between the base and sub-base, substantially as described.
10. In a last holding jack, a jack body provided with a fixed toe supporting
standard having an adjustable toe support, a fixed heel supporting standard having
a swinging heel support, and a tension regulating lever, in combination with a
base, sub-base, a frame interposed between and hinged at its opposite ends to the
base and sub-base respectively, and the base holding bar and locking rod, sub-
stantially as described.
11. In a last holding jack and in combination, a sub-base A having upwardly
projecting lugs on side thereof, a hinged connection as D pivoted at one end to
said lugs and at its opposite end to the opposite side of the base E, a holding
bar B, a locking rod C, a centrally pivoted jack body G, having cam face g and a
cam lever H, substantially as described.
12th. In a last holding jack, the combination of a jack body having a fixed heel
standard provided with transverse aperture, with a swinging heel standard having
a removable last receiving pin, a bifurcated lower end, and apertures to receive
a spring controled lever which determines pressure with which last is held in
position, substantially as described.
HASELTINE, LAKE & Co.,
For the Applicant.