Improvements in Lasting Machines for Boots and Shoes.
Year: 1891

page_text: Date of Application, 25th Nov., 1891
Complete Specification Left, 25th Aug., 1892-Accepted, 1st Oct., 192
PROVISIONAL SPECIFICATION.
Improvements in Lasting Machines for Boots and Shoes.
I, WILLIAM HENRY DORMAN of The Hawthorns, Newport Road, Stafford, in
the County of Stafford, Engineer do hereby declare the nature of this invention to
be as follows:-
This invention has for its object improvements in lasting machines which operate
by means of fingers, wipers, crimping plates or similar devices upon the upper of
the boot so as to draw the same tightly over the last and consists in applying
means for raising the said fingers, wipers or crimping plates away from the upper
when desired.
I apply to the lasting machine a treadle or hand lever and connect it by means
of a suitably arranged system of links and levers to the lasting fingers crimping
plates or other devices so that the operator may whenever he desires raise any or
all of the lasting fingers wipers or crimping plates away from contact with the
upper and I arrange a catch to maintain the fingers as long as desired in the raised
position. I also arrange if required hinges and raising springs to the crimping
or other plates which act upon the upper.
.
1001
W. H. DORMAN.
COMPLETE SPECIFICATION.
Improvements in Lasting Machines for Boots and Shoes.
1, WILLIAM HENRY DORMAN of The Hawthorns, Newport Road, Stafford, in
the County of Stafford Engineer 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 improvements in lasting machines which operate
by means of fingers, wipers, crimping plates or similar apparatus (which I herein-
after call lasting devices) upon the upper of the boot so as to draw the same
tightly over the last and consists in applying means for raising the said lasting
devices away from the upper when desired.
Hitherto the lasting devices, such as fingers, wipers or crimping plates, after
having been moved inwards under considerable piessure, over the last by the
action of the machine so as to draw the upper tight upon the last, have been
withdrawn (as soon as the tacking of the upper to the insole has been performed)
still pressing upon the upper and in consequence there has been, especially with
light or kid uppers, a strong tendency to draw out the lasting tacks and
consequently to unlast the boot through the backward dragging action of the
lasting fingers and plates upon the upper.
To remedy this defect is the object of my invention which I accomplish by
raising the said lasting devices off the surface of the upper or at least greatly
reducing the pressure during the return or withdrawing movement of the lasting
devices.
The manner in which this may be done I will now describe, reference being
made to the accompanying drawings in which,
Fig. 1 is a side view.
Fig. 2 is a front view and
Fig. 3 is a plan of a portion of a lasting machine shewing my invention
annlied

page_text: A is a portion of the main frame of a lasting machine which may be of similar
construction to that described in the Specification of Letters Patent granted to
Charles Frederic Gardner dated. A.D. 1883 17th September and numbered 4436.
I apply to such a machine (or to any other in which the lasting operation is
performed by fingers, wipers, crimping plates or similar devices acting upon the
upper of the boot as already described) a treadle B. (or if desired a hand lever C
as indicated in dotted lines) carried upon a pin D in the frame A and connect it by
means of rods E. E' jointed ou a pin F in the treadle B to two bell crank
levers G. G' which are mounted on a pin H in the frame A.
The upper arms of the bell cranks G. G are connected by jointed rods I. I to
two levers J. J' which are mounted on shafts K. K₁ carried in bearings L. L'
prepared for them in the jaws M. M' on the upper ends of which are mounted the
carriages N. N. which carry the lasting fingers 0. 0. and the carriages N' N
which carry the fingers O'O' which press down upon the crimping plates P. P.
The fingers O and O' are mounted in the carriages N and N upon pivots Q. Q.
and are furnished with tails R. R. which are connected by jointed rods S. S. to
arms T. T. mounted upon the shafts K K' already referred to. Springs U. U.
are arranged upon the carriages N. N' so as to act upon the tails R. R. and press
down the fingers 0. 0¹ upon the upper V of the boot and the crimping plates P. P.
respectively.
The above described arrangement acts, when the treadle B (or the hand lever C)
is depressed by the operator, to raise the lasting fingers O. O' away from the
boot upper V and the crimping plates P and in order that they may be so
maintained while the jaws M. M are opened by the action of the machine for the
purpose of withdrawing the lasting fingers O. O₁ a catch W is provided pivoted
on a pin X in the frame A and adapted to engage a projection Y on the treadle B
so as to hold the treadle down. The catch W is held in engagement by the
spring and is furnished with a treadle a for the purpose of releasing it and
allowing the fingers O. O to descend ready for the lasting operation to be
performed upon the next boot.
If desired the catch may be arranged, as shewn at bin dotted lines and be
provided with a handle e to release it.
The crimping plates P. P. are pivoted in the plate d on a pin e and hinges f
are provided so as to allow of a slight amount of lifting of the crimping
plates P. P. Springs may be inserted beneath the plate d so as to lift the
crimping plates P. P. when free from the fingers O'.
Having nowparticularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is:
In a machine for lasting boots and shoes, raising the lasting devices wholly or
partially from the surface of the upper so as to remove or reduce the pressure on
the upper during the return or withdrawing movement of the lasting devices
substantially as described.
Dated this 24th day of August 1892
W. H. DORMAN.