CRIMPING LEATHER
Year: 1886

page_text: I, THOMAS TINNOCK MARSHALL, of the City of Hamilton, in the County of
Wentworth, Province of Ontario, Dominion of Canada, Manufacturer, do hereby
declare the nature of said invention for <f
"
CRIMPING LEATHER to be as follows:-
My invention relates to the manufacturing of seamless uppers for boots and
shoes, in which they are moulded by the operation of a punch with leather.
passing through a mould, the mould lying in a rigid bed which is fastened with
bolts, or otherwise, between two metal frames.
The leather is first cut oval-shape, and being quite flat, is placed on the top
of mould underneath a press plate. The press plate is then brought to bear
slightly on the surface of the leather, while the punch carries the leather through
the mould.
At the time the leather is being carried through the mould, and almost as soon
as the punch touches the surface of the leather, an under-pressure foot is brought
up to bear against the leather (now around the instep or bottom of the punch),
to keep it in position.
When the punch with leather is through the mould, the under pressure foot is
brought from contact with the leather, and the leather drops from the punch, being
crimped into the desired shape.

page_text: Machine for Crimping Leather Uppers for Boots and Shoes.
I, THOMAS TINNOCK MARSHALL, of the City of Hamilton, in the County of
Wentworth, in the Province of Ontario, in the Dominion of Canada, Manufacturer
`do hereby declare the nature of said invention for CRIMPING LEATHER 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 a new and useful machine for crimping leather for the
uppers of boots and shoes, arranged in such a manner, that a flat piece of leather,
oval in shape, is placed on the top of an instep-shaped mould, and an adjustable
press plate is brought to bear lightly on the surface of the leather, while an instep-
shaped punch is brought down through a hole in the press-plate to the surface
of the leather, taking the leather with it; thus crimping and forming the leather
in going through the mould. An under pressure foot, instep-shaped, is brought
up to press against the leather (now around the instep of the punch) to keep it
in position. When the punch, with leather, is through the mould, the under
pressure foot is brought from contact with the leather, and the leather drops from
the punch, being crimped into the desired shape.
My invention is illustrated in the accompanying drawings, in which:
Figure 1 shows an elevation of the left side (with side frame removed) of a
machine embodying my invention.
Figure 2 is a front elevation of the same.
Similar letters referring to similar parts.
Letters a denote the two frames of a machine, supported by the legs a³. The
drive pulley B hung on the right hand end of drive shaft B¹ in bearings a¹, and
a spur pinion wheel B2 at the left hand end, are keyed on the shaft c in bearings a¹
driven by the same pinion.
On this shaft a small bevel wheel c¹ is keyed working into a larger bevel wheel c³,
thus driving the shaft c³ in bearings a³.
At the front end of this shaft, a faced plate eccentric c is keyed, operating
with an adjustable cross head D₁, therefore moving the ram D with punch E
up and down.
The bed G, which is screwed fast between the two frames a resting on pieces H,
is provided with flanges on the top to admit the two halves of mould G¹, the
mould being in halves for the purpose of allowing for expansion when a thick or
uneven piece of leather is being carried through with the punch E. Between the
flanges of the bed and the sides of the mould, a thickness of rubber may also
be used to facilitate expansion of mould, and when expanded, the joint being open,
a concave piece of brass G2 may be used in the concave end of mould to prevent
the joint from injuring the leather whilst passing through.
The can I on the shaft c oscillates the arm J on the bar J¹ by means of the
sleeve J. Attached to this sleeve is the arm K¹ with weight for balancing the
press plate F, also the adjustable arms K (adjusted by means of the set screws J³)
front ends of which are attached to the press plate by means of set screws so as

page_text: to adjust the said press plate level on the leather, which is placed on the mould
ready to receive the punch, the object being chiefly to allow the leather through
the mould evenly. When partially through the mould, an under pressure foot L
(instep-shaped and fitting the punch) is brought up to bear against the instep
of the leather, to keep the same in position. This said foot is operated by the
lever handle n¹ on the shaft n in connection with the levers R, connecting rods P,
and the cross head o, attached to the shank of the said foot L. The said shank
slides in the stationary piece w (attached to frames), and the block u on the floor.
A chain or rod attached to the handle n¹ and the lever s with weight attached,
helps to bring the foot in position, to the leather.
When the punch and leather are through the mould, the under pressure foot
may be brought away from the same, and the leather will drop, it being then
moulded or crimped.
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:
1st The combination, in a leather crimping machine, of the two frames A with
their bearings and shafts for transmitting power to the surface-faced eccentric C
keyed on the shaft C³, thus giving power to the punch E, as specified.
2nd The combination of oscillating arm J, provided with the arms K-the front
ends of which are attached to the press-plate F and adjusted by the set screws J³
and Foscillated by the cam I on the shaft J³ with the balancing arm K¹ with
weight, as described.
3rd In a leather crimping machine, the combination of the punch, press-plate,
and mould G¹ provided with a rubber strip on each side, when in the rigid bed G
and loose piece of mould G, substantially as described.
4th The combination of the under pressure foot L, and the apparatus for raising
or lowering the same with the mould, press-plate, and punch, as set forth.
5th The combination of the operating parts, operating conjointly in transmitting
power to the punch, and press-plate, the under pressure foot with its apparatus
for working the same; and the mould formed in halves, and adjustable in the
rigid bed G, all substantially as set forth.
Deted this 20th dex of Max 1886