Improvements in Lasting Machines.
Year: 1888

page_text: Date of Application, 12th Dec., 1888
Complete Specification Left, 12th Sept., 1889-Accepted, 12th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Lasting Machines.
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:
My invention consists in applying to a Lasting Machine mechanism by which, in
lasting a boot, what is technically known as draft" is obtained, that is to say,
drawing the upper over the last in certain parts of the boot, in a direction other than
at right angles to the longitudinal centre line of the sole.
I carry out my invention by applying to the oscillating frames or other moving
parts of a Lasting Machine, which carry the lasting fingers-a pair of lasting fingers
mounted on a pivot, and furnished with tails extending in an opposite direction to the
lasting fingers. These tails are made to work in connection with adjustable cams so
arranged that, as the lasting fingers move towards each other, their working ends
are made to diverge from the line at right angles to the longitudinal centre line of
the sole, in which they would move if not deflected by the action of the above men-
5 tioned cams.
COMPLETE SPECIFICATION.
Improvements in Lasting Machines...
I, 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:-
My invention consists in applying to a Lasting Machine, mechanism by which, in
lasting a boot or shoe, what is technically known as draft is obtained; that is to say,
drawing the upper over the last, in certain parts of the boot, in a direction other than
at right angles to the longitudinal centre line of the boot sole.
This I accomplish by applying to the oscillating frames or other moving parts of
a lasting machine which carry the lasting fingers, other lasting fingers which I call
"draft" fingers. These are mounted on pivots and are furnished with tails which
are provided with rollers that work in grooves in flat cam pieces mounted on some
fixed part of the machine so that as the lasting fingers move in & out by the operation
of the machine the working ends of the draft fingers are caused as the rollers travel in
the grooves to diverge from the line, at right angles to the longitudinal centre line of
the boot sole, in which they would move if not deflected by the action of the above
mentioned cams.
The accompanying drawings shew my invention as applied to a lasting machine
similar to that described in the Specification of Charles Frederic Gardner in former
Letters Patent dated 17th September in the year of our Lord 1883, No. 4436.
Figure, 1. is a vertical section of a portion of a Lasting Machine.
Figure, 2. is a plan of the same.
The same letters indicate the same parts in both drawings.
a. a¹ are portions of the side frames of the machine upon which is mounted the
bed piece, b.
alan which oscillate the frames d d₁.
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The frames d. d' are provided at their lower ends with rolls, e. e which bear upon
the cams, ff and are held thereto by the spring; g.
The cam piece, is made terrise and fall at the proper times by the action of the
machine and so opens & closes the frames, d. d upon the bars d d³ of which are
mounted the carriages which carry the lasting fingers.
-
Besides the finger carriages aslused in the machine described in the above named
letters patent No. 4436 September. 17th 1883, I employ other finger carriages, h.
carried on the bars, d² d³. These finger carriages are made in two parts. The lower
parts h. are secured to the bars d² d by set screws, i. and the upper parts k. k
to which the fingers are attached are connected to the lower parts h. 1 by the
pivots, which allow them to turn upon the lower parts h. h.
x
The draft fingers w. w are held and are adjustable in the upper parts k. k¹ by the
set screws & y. and are made in the form of springs turned up slightly at their
ends and serrated on their undersides. Their function is to draw the upper over the
last in the required direction. The upper parts k k of the finger carriages have
tails 1. the ends of which are furnished with cam rolls m. m² which run in
grooves in the flat cam pieces n. n¹.
These cam pieces, n. n¹ are carried on the bridges p. p' which are affixed to any
convenient stationary parts of the machine, as the pillars o. o¹ and the bed piece, b.
The bridges p. p¹ have slots q. q' in which the cam pivot blocks r. ¹ can be adjusted
the nuts's. serving to cramp them fast. The cam pieces n. n¹ are provided with
pivots which pass through holes in the blocks in which they may be turned
so as to set the cam grooves to any desired angle with the centre line of the boot sole
and the nuts u. u¹. serve to cramp them in position. As an additional security the
set screw,, v. may be employed to prevent the cam piece, n. from being moved by the
pressure of the roll, m.
This mechanism acts as follows,
A last with an upper upon it having been placed in the machine, and the cam
pieces n. n having been set at such an angle as will give the desired "draft" to
the upper the machine is operated in the ordinary manner.
دو
When the time comes at which the bars d d are being closed, by the rising
of the cams f. f and the upper is being drawn over the last at the toe & heel
by the operation of the "crimping plates" and the "crimping plate fingers
-as described in the "Letters Patent" before referred to-the draft fingers 10. w
the serrated undersides of which have already begun to press upon the upper at or
near that part of the last commonly known as the "joint," instead. of advancing
straight inwards and' drawing the upper in a direction at right angles to the centre
line of the boot sole, are caused by the operation of the rolls m. m in the grooves of
the cam pieces n. n; to travel in a direction other than at right angles with the
centre line of the boot sole, as shewn by the arrows. Any desired amount of draft, as
found necessary by the operator may thus be imparted to the boot upper, dependent.
on the position in which the cam pieces n. n have been previously set.
Although I have described my invention as applied to the lasting, machine described
in the Letters Patent of Charles Frederic Gardner dated 17th September, A.D. 1883.
No: 4436 I wish it to be understood that I do not confine myself to this application
as the invention is equally applicable to other lasting machines.
Having now particularly described and ascertained the nature of my said' Inven-
tion, and in what- manner the same is to be performed, 'I declare that what I
claim is
First. In machines for lasting boots; providing fingers the ends of which press
upon the edges of the upper and move automatically over the insole in a line of, direc-
tion other than at right angles to the centre line of the sole of the boot for the purpose
of imparting "draft" to the boot upper.
Second. In machines for lasting boots, pivotting the lasting fingers so as to allow
them to oscillate sideways and providing them-with tails which are acted upon by.cam

page_text: pieces so as to cause the fingers to move in a direction diverging from the line at
right angles to the centre line of the sole of the boot for the purpose of imparting
"draft
to the upper; also making the said cam pieces adjustable so as to vary the.
degree of divergence according to the "draft" required.
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Third. In machines for lasting boots, the use of fingers pivotted so as to move
sideways for the purpose of imparting "draft" to the upper when lasting boots.
Fourth. In machines for lasting boots, the use of cam pieces for the purpose of
causing lasting fingers to move in a line of direction other than at right angles to tho
centre line of the sole of the boot so as to impart "draft" to the upper when lasting
boots.
Fifth. In machines for lasting boots where lasting fingers, actuated by cams so as
to cause them to diverge from the line at right angles to the centre line of the boot
sole, are used for the purpose of imparting "draft to the upper when lasting boots,
making the angle of the cams adjustable so as to vary the degree of divergence.
Dated this 11th day of September 1889..
W. H. DOKMAN.