Improvements in Jacks employed in Lasting Boots and Shoes.
Year: 1894

page_text: Date of Application, 26th Nov., 1894
Complete Specification Left, 22nd Aug., 1895-Accepted, 2nd Nov., 1895
PROVISIONAL SPECIFICATION.
GIMSON, ARTHUR
Improvements in Jacks employed in Lasting Boots and Shoes.
We, JOSIAH MENTOR GIMSON, JOSIAH
JAMES
GIMSON and SYDNEY ANSELL GIMSON of the Firm of Gimson and Company
The Engine Works, Vulcan Street, Leicester in the County of Leicester,
Engineers, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in Jacks employed in lasting machines
to carry the last up to and round the nozzle of the machine and has for its objects
the wedging of the last that the front or toe part thereof is brought downward and
is tightened on the toe rest of the jack, to make the last solid thereon, also by the
employment of a split heel stand, one stand shall suffice for any last and shall be
extensible that the movable tip thereof shall fit any sized hole that there may be
in the last, and by which the last is supported and held on the jack.
To carry out our invention we take a jack of any well known kind used in hand
and machine lasting, but preferably those cast in two portions held together and
longitudinally adjustable in the ordinary manner. Into the hollow heel portion
thereof we fit on to a pin or pivot going through the arm a split heel stand, the
tail of the back jaw of the stand resting against the inside of said arm, the front
or movable jaw or tip opening outwardly to fit any size of hole desired, by or upon
the operator moving a hand lever upwards, said lever being cramped at its inner
pivoted end and carries a suitably shaped cam to which the tail end of the
movable tip is kept by the influence of a spring coming at the back thereof, such
throwing over cam depressing the tail and extending the such movement being
tip,
regulated by the outer portion of the hand lever catching in the teeth of a rack
plate secured to the arm of the toe rest, the said rack holding the lever in position
and the movable jaw or tip quite firm.
The lever is held to the rack by a blade spring secured to the cramped end
thereof and pressing against the pivotal bracket in the heel portion of the jack.
When it is desired to release the last, the lever is moved downward and the
movable jaw or tip is closed.
We do not confine ourselves to the shape of the tips forming the split heel
stand for they may be of any desired shape to conform to the hole in the last.
And instead of regulating the extensible movement of the movable tip from the
tve portion of the jack we may by other suitable means, such as by a screw and
worm or lever action on the heel portion of the jack extend the split heel stand
to wedge and fit any last, jacks now in use have to be fitted with different sized
stands to suit the different sizes of lasts but by employing a split heel stand this is
obviated altogether, and much time is saved besides the last is made more firm
and tight upon the jack.
Dated this 22nd day of November 1894.
W. B. MAXFIELU,
Applicants' Agent.

page_text: Improvements in Jacks employed in Lasting Boots and Shoes.
We, JOSIAH MENTOR GIMSON, JOSIAH GIMSON, ARTHUR JAMES
GIMSON and SYDNEY ANSELL GIMSON of the Firm of Gimson and Company
The Engine Works, Vulcan Street, Leicester in the County of Leicester,
Engineers 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 jacks employed in lasting machines to
carry the last up to and round the nozzle of the machine and has for its objects
the wedging of the last so that the front or toe part thereof is brought downward
and is thereby tightened on to the toe rest of the jack to make the last solid
thereon, also by the employment of a split heel stand, one stand shall suffice for
any last, and is so extensible that the movable tip thereof shall fit any sized
hole that there may be in the last, and by which the last is supported and held on
the jack.
That our invention may be well understood a sheet of drawings is appended in
which,
Figure 1 is a side view partly in section of the jack constructed according to our
invention.
Figure 2 is an end elevation of same looking from the back and showing the
rack plate and lever.
Figure 3 is a view of the jaw E engaging with lever.
Figure 4 an under view of same.
Figure 5 shows the opposing jaw D, and Figure 6 an under view of same.
Figure 7 is a side plan view of the lever G, and
Figure 8 a plan of same.
The letters of reference represent like parts in all the figures.
To carry out our invention we take a jack of any well known kind used in hand
and machine lasting, but preferably those cast in two portions held together and
longitudinally adjustable in the ordinary manner as A, B Figures 1 and 2 of the
accompanying drawings. Into the hollow heel portion thereof we fit on to a pin
or pivot a going through the arm, a split heel stand C the tail of the back jaw D
resting against the inside of said arm, the front or movable jaw E, or tip opening
outwardly will fit any size of hole f, in the last F "see Figure 1," by or upon the
operator moving the hand lever G upwards, said lever is cranked at its inner
pivoted end H and carries the cam I to which the tail end of the movable tip
is kept by the influence of the spring J coming at the back thereof, such
throwing over cam I depressing the tail and extending the tip, such movement
is regulated by a portion of the hand lever G catching in the teeth of the rack
plate K secured in any suitable manner or formed in the face of the arm of the
toe rest L, the said rack holds the lever in position and the movable jaw or tip 4
quite firm in the desired position.
The lever is kept in gear with the ratchet K by the blade spring M secured
to the cranked end thereof "see Figure 8," and pressing against the front face of
the heel portion of the jack as at dotted line M Figure 1.
When it is desired to release the last from the jack the lever G is moved down- 4
waid and the movable jaw or tip closes.
We do not confine ourselves to the shape of the tips forming the split heel stand
for they may be of any desired shape to conform with the hole in the last F.
And instead of regulating the extensible movement of the movable tip E from the
toe portion of the jack as shown, we may by adopting such means as a screw and

page_text: worm, or by a lever on the heel portion of the jack extend the split heel stand to
wedge and fit any last.
Jacks as at present employed for the purpose as herein before mentioned have
to be fitted with different sized stands to suit the different sizes of lasts but by
the employment of a split heel stand this is entirely obviated, and much time is
saved, besides making the last more firm and the toe part tight upon the toe rest
of the jack.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In jacks for holding the last during the process of lasting boots or shoes, the
wedging of the hole in the last by aid of a split heel stand of the character
described.
2. In jacks used for presenting the boot or shoe to the lasting mechanism of a
machine, or in the method of lasting by hand the wedging of the last by aid of a
split heel stand having stationary and movable jaws or tips operated from the toe
portion of the jack by cranked lever and cam, with ratchet and springs arranged
and operated substantially as herein described and illustrated.
3. In jacks used for presenting the boot or shoe for the lasting operation the
means as herein before described for wedging the last and regulating the extensible
movement of the movable tip of the split heel stand from the heel portion of the
jack in the manner substantially as described.
Dated this 17th day of August 1895
W. BESTWICK MAXFIELD,
Registered Patent Agent,
19 Bowling Green Street, Leicester, Applicants' Agent.