Improvements in or relating to Skiving Machines used in the Manufacture of Boots and Shoes.
Year: 1893

page_text: Date of Application, 19th May, 1893
Complete Specification Left, 19th Feb., 1894-Accepted, 14th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in or relating to Skiving Machines used in the
Manufacture of Boots and Shoes.
We, CHARLES HENRY DALE and FREDERICK JAMES DALE of Newarke Street
Leicester, Boot and Shoe Engineers, do hereby declare the nature of this invention
to be as follows :-
This invention has reference to skiving machines such as are used in the
manufacture of boots and shoes.
The invention is chiefly designed with a view of providing a machine which can
be successfully used in skiving or reducing boot and shoe stiffeners formed wholly
or partly of cardboard, millboard, American board or similar material which when
submitted to the action of a fixed knife are inclined to peel or come off in layers
rather than submit to a clean cut.
A machine constructed according to our invention is also equally applicable for
skiving leather.
Our invention embodies the following improvements, viz. :—
(1) The use of conical feed rollers.
(2) A reciprocating cutting knife.
(3) A knife or knife holder adjustable in such a manner as to increase or decrease
the extent of the material removed by the knife while maintaining a uniformity in
the thickness of the edge of the material.
The conical feed rollers are located in close proximity to the skiving knife and
are driven by any suitable gearing.
The said rollers are specially applicable for feeding to the knife stiffeners or
toecaps or other parts of boots and shoes having curved edges, without any
guidance from the operator while straight pieces of material can also be skived.
The knife by preference is reciprocated in a transverse direction to that in which
the material travels from the feed rollers so that as the material is presented to it,
it moves to and fro across the marginal edge of the material. For this purpose
the stock or knife holder is connected to a sliding block or plate actuated by a
connecting rod eccentrically attached to a wheel driven from the driving shaft,
or other suitable mechanism may be employed to reciprocate the knife.
In order to vary the angle of the skiving knife as before mentioned, the stock or
knife holder may be carried in a suitable bracket which permits of it being
adjusted in a circular direction, having a centre in a line with that in which the
skiving knife is reciprocated.
Dated this 19th day of May 1893.
T
D
HOMESON 2. ROULT
W. P. THOMPSON & ROULT.
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or relating to Skiving Machines used in the
Manufacture of Boots and Shoes.
We, CHARLES HENRY DALE and FREDERICK JAMES DALE of Newarke Street
Leicester, Boot and Shoe 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 has reference to skiving machines such as are used in the
manufacture of boots and shoes.
"

page_text: material
en when submitted to the action or a пxed кmiе is incшned to peel or
come off in layers rather than submit to a clean cut.
A machine constructed according to our invention is also equally applicable for
skiving leather.
Our invention embodies the following improvements, viz. :-
(1) The use of conical feed rollers.
(2) A reciprocating cutting knife.
(3) A knife or knife holder adjustable in such a manner as to increase or decrease
the extent of the material removed by the knife while maintaining a uniformity in
the thickness of the edge of the material.
The conical feed rollers are located in close proximity to the skiving knife and
are driven by any suitable gearing.
The said rollers are specially applicable for feeding to the knife, stiffeners or
toecaps or other parts of boots and shoes having curved edges, without any guidance
from the operator while straight pieces of material can also be skived.
The knife, by preference, is reciprocated in a transverse direction to that in
which the material travels from the feed rollers so that as the material is presented
to it, it moves to and fro across the marginal edge of the material.
For this purpose the stock or knife holder is connected to a sliding block or plate
actuated by a connecting rod eccentrically attached to a wheel driven from the
driving shaft, or other suitable mechanism may be employed to reciprocate the
knife.
In order to vary the angle of the skiving knife as before mentioned, the stock or
knife holder may be carried in a suitable bracket which permits of it being
adjusted in a circular direction, having a centre in a line with that in which the
skiving knife is reciprocated.
In order that the invention may be fully understood the following further
description is given in reference to the accompanying drawings wherein,
Figure 1 is a side elevation, Figure 2 a plan, Figure 3 a front elevation, Figure 4
a longitudinal section and Figure 5 a cross section of a skiving machine constructed
in accordance with this invention.
Figure 6 is a sectional detail of the plate N' and side cheek of framing.
A represents the driving shaft having a bearing in the bracket attached to the
framing, and carrying at one end the usual fast and loose pullies A' A² and at the
opposite end a worm B gearing into a worm wheel B' on the end of a shaft C
having bearings C1 C2 in the side of the framing D.
This shaft C also carries a spur wheel F. Fig. 5. which engages a similar
wheel F on a shaft E having bearings in the ends of a crossarm G one end of
which is fulcrummed on a pivot or spindle D' passing into each side cheek of the
framing D.
The other end of the said cross arm is located in an opening D2, Figs. 3 and 6.
in the end of the framing D.
The feed roller H on the end of the said shaft E is adjustable relatively to the
roller for varying thicknesses of leather by means of a spring G' located within
a tubular socket G. One end of this spring rests on the crossarm G while the
other end is in contact with the bottom of a screwed spindle G³ which when
lowered or tightened by means of the hand wheel G at the upper end thereof
compresses the said spring until it depresses the free end of the crossarm and the
end of the shaft therein whereupon the feed roller H on the latter is moved nearer
to its neighbour.
The roller H is preferably fluted or grooved as shown but the adjacent roller J
is smooth faced.
This latter roller is carried on the end of an obliquely fixed shaft J' having
bearings in the framing D and receives motion from a bevel wheel J' thereon

page_text: engaging the wheel F' before described. The said shaft J' has on its lower end a
collar fixed close up against the shaft bearing so as to prevent accidental
movement of the said shaft.
Before being presented to the feed rollers H. and J the stiffener or other curvedi
piece of material to be skived is placed on a guide plate K.
After passing between the rollers the material comes into contact with the
skiving knife K' which moves to and fro across the path of the material after it
leaves the rollers.
The knife K¹ is held in position in preferably a dovetailed groove K², Fig. 1, in
a stock or holder L formed preferably integrally with a bevelled edged sliding
block or plate L at a right angle thereto having a reciprocating motion in a
similarly shaped groove or track in a knife stock carrying plate L'.
The movement to the sliding block L may be conveniently effected by a
connecting rod L² attached thereto and an eccentric L³ on the boss M' of
grooved pulley M the latter being driven by a belt M² from the fast pulley A¹ oĽ.
the driving shaft A.
In order to adjust the knife K' so as to skive the edge of a stiffener, toecap or
other curved article at a more or less acute angle the knife stock carrying plate LL
is located in a curved slot or path N forming an arc of a circle, whose centre is in
the line in which the skiving knife K' reciprocates.
The before mentioned curved path is formed in a plate N' secured to the side of
the framing D by screws N2 within slots N³ in the said plate and the knife stock
carrying plate is similarly secured by screws N' within the curved slot N.
When it is desired to vary the cutting angle of the knife K' it is effected by
turning a hand wheel O the spindle O₁ of which passes through an arm N' in the
plate N and has on it a collar Ne which prevents the said wheel travelling up and
down when turned.
The screwed spindle O¹ of the said hand wheel O passes into an angular plate P
pivotted to the knife stock carrying plate L' so that when the said hand wheel is
turned in one or the other direction the knife stock carrying plate is moved
within the curved path N before described, the effect of which is to raise or lower
the outer edge K* of the knife, while the inner edge k* Fig. 1. of the latter (which
in reality is the centre from which the curved path N is struck or described)
remains stationary and its position unaltered.
This movement of the knife stock carrying plate within its curved path N
adjusts the position of the knife so that the edge of the material being skived
will always remain uniform while the amount skived from the surface thereof will
be at a more or less acute angle thereto.
In order to permit of the knife stock L* sliding block L, knife stock carrying
plate L' and plate N¹ being moved en masse for the purpose of fixing the knife K
centrally opposite the space between the feed rollers, (before adjusting the angle
of the knife as before described) a hand wheel Q is employed.
The boss of the said hand wheel rests on a lugd forming part of the framing
while the spindle of the said wheel passes through the lug and has a collar Q
underneath which prevents it travelling up and down when turned.
The screwed lower end of the spindle passes into the plate N¹ and upon the
wheel Q being turned; either raises or lowers the plate N' and the parts L* L L'N'
connected thereto as before described, thereby varying the position of the knife K'
relatively to the feed rollers H and J.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. In a skiving machine the use or employment of conical feed rollers
substantially as and for the purpose described and illustrated in the accompanying
drawings.
2. In a skiving machine the combination of a knife or cutter having

page_text: reciprocating motion in a line transverse to that in which the material leaves the
feed rollers.
3. In a skiving machine the combination of mechanism for reciprocating the
knife or cutter across the path of the material to be skived after it leaves the feed
rollers.
4. In a skiving machine the combination with the knife and knife stock or
holder of a sliding block such as L connecting rod such as L* and eccentric such
as L operating substantially in the manner and for the purpose described and
illustrated in the accompanying drawings.
5. In a skiving machine the combination with the knife of a knife stock or
holder adjustable in a curved path forming an arc of a circle whose centre is
coincident with the stationary edge of the knife substantially as described.
6. In a skiving machine the combination of conical feed rollers and a knife or cutter
having a reciprocating motion in a line transverse to that in which the material
leaves the said feed rollers substantially as described.
7. In a skiving machine the combination with the knife of a knife stock or
holder adjustable in a curved path in such a manner as to vary the cutting angle
of the knife while maintaining a uniform thickness in the edge of the material
being skived substantially as described.
8. The improved skiving machine consisting of the parts constructed, arranged
and operating substantially in the manner described and illustrated in the
accompanying drawings.
Dated this 17th day of Kobra 1804
CHARLES HENRY DALE.
FREDERICK JAMES DALE.
Witness:
E. NORTH LEWIS,
Berridge Street Chambers, Leicester.
W. P. Thompson & Boult,
Agents for the Applicants.