Improvements in or relating to Skiving or similar Machines used in the Manufacture of Boots and Shoes.
Year: 1892

page_text: Date of Application, 29th Apr., 1892
Complete Specification Left, 30th Jan., 1893-Accepted, 29th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to Skiving or similar Machines used
in the Manufacture of Boots and Shoes.
We, WILLIAM ROBERT MUDD and ALFRED POCHIN of Newarke Street,
Leicester, Engineers to the Boot and Shoe Trade, do hereby declare the nature of
this invention to be as follows:-
The object of this invention is to provide a machine for skiving, bevelling or
otherwise reducing the substance or thickness of the marginal edge or edges of
leather used in the manufacture of boots and shoes.
A machine constructed according to this invention is specially useful in preparing
"shanks" the edges of which have to be bevelled or reduced, although it may be
used for other similar operations.
For this purpose the leather to be treated is passed between two suitable feed
rollers or wheels which introduce the leather to the action of cutting knife or
knives.
The knife is adjustable in relation to the feed rollers or wheels and is fixed at
an angle thereto variable according to the amount of leather to be removed.
The knife or knives are connected to a clamp plate or otherwise and are carried
in suitable brackets or equivalents on preferably the same centres as the feed
wheels.
These brackets are adjustable to vary the angle of the cutting knife and the
latter may also be adjusted laterally.
The knives used may be removable and renewable and of various shapes according
to the purpose for which the leather is required.
The feed wheels or rollers are carried on suitable shafts or spindles and may be
operated by either hand or power.
Dated this 29th day of April 1892.
W. P. THOMPSON & BOULT,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or relating to Skiving or similar Machines used
in the Manufacture of Boots and Shoes.
We, WILLIAM ROBERT MUDD and ALFRED POCHIN of Newarke Street,
Leicester, Engineers to the Boot and Shoe Trade, 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 :—
The object of this invention is to provide a machine for skiving, bevelling or
reducing the substance or thickness of the marginal edge or edges of leather used
in the manufacture of boots and shoes.
A machine constructed in accordance with this invention is specially useful in
preparing shanks, the edges of which have to be bevelled or reduced, although it
may be used for other similar purposes.
For this purpose the leather to be treated is passed between two suitable feed
rollers or wheels which introduce the leather to the action of the cutting knife or
knives.
The knife is adjustable in relation to the feed rollers and is fixed at an angle
thereto, variable according to the amount of leather to be removed.

page_text: The knife or knives are connected to a clamp plate or otherwise and are carried
by suitable plates or equivalents on preferably the same centres as the feed wheels.
The said plates. may be adjusted to vary the angle of the cutting knife, and the
latter may be removed and another of a different shape substituted for it according
to the purpose for which the leather is required.
The feed wheels or rollers are carried on suitable shafts or spindles and may be
operated by either hand or power.
Referring to the accompanying drawings
Figure 1 is a front elevation, Figure 2 a side elevation, and Figure 3 a plan
(minus the driving gear) of a machine constructed in accordance with this
invention.
Figures 4 and 5 are detail views, on an enlarged scale.
A is the guide plate upon which the operator places the shank or leather and
moves it forward to the two feed wheels B. C. which grip the leather and carry it
forward to the cutting edge of the skiving knife.
The feed wheels are mounted on the ends of shafts B'C' carried in bearings B'C'
and furnished at the opposite ends with gear wheels D E and the shaft B' with the
usual fast and loose pullies F. The feed wheel B is preferably one-half or there-
abouts the size of the lower wheel C, and the gear wheels D E bear such propor-
tion to each other as to drive the feed wheels at the same speed.
The bearing C* of the shaft C' is carried by arms G connected by screws G¹ to
the framing G³.
The lower feed wheel C is kept to its work by a spiral spring G³ located under
its bearing in a socket G in the bed plate G' and may be adjusted in relation to
the upper feed wheel B by turning the wheel H provided with a partly screw
threaded stalk H' passing through the internally threaded socket H so that the
end of the stalk rests on the side of the bearing (as shown most clearly in
Figure 1.
The upper feed wheel is of reduced diameter to permit of the cutting edge of
the knife J being located as closely as possible to the point at which the leather is
gripped between the two wheels B C and thereby ensuring the end of the leather
being fed with greater certainty to the cutting knife than would otherwise be
the case.
The knife J is carried in a clamp plate K supported at one end by a set screw K'
passing into the same and also through the arm K* as in Figure 1.
The said clamp plate is enlarged at one part and has a similarly shaped plate K³
connected thereto by screw K' and laid over the knife to hold it in position.
The cutting edge of the knife may be adjusted in relation to the feed wheels BC
by releasing the screw K' and moving the knife J the required distance to or fro
on the clamp plate K and again tightening the screw K' to fix the knife firmly in
position.
One corner of the cutting end of the knife is overlapped by a lip L fixed to
the side of the plate Li for that purpose as indicated most distinctly in
Figures 1 and 4.
The said plate L' is slotted at L' and hung loosely on the end of the shaft C¹
and is turned under at its lower end to permit of a set-screw L³ passing through
and bearing against the end of the block L' so that by turning the said set-screw
pressure is exerted on the edge of the knife by the lip L in a downward direction.
The opposite corner of the cutting edge of the knife is underlapped by a lip M
on the lower end of the plate M' maintained by screws M' against the block M³ on
the shaft B' and capable of being raised or lowered by the turning of a set-screw M
passing through the upper end of same and also into the block M³.
The simultaneous movement in opposite directions of the lips L M and
plates L'M' by turning the set-screws L M for that purpose will cause the clamp
plate K to turn partly on its axis K' and vary the angle of the knife J in relation
to the feed rollers B C and thereby regulate the amount of leather to be removed.

page_text: The lips LM are kept in contact with the edges of the knife J by spring
plates L M bearing against the sides of the blocks L' and M respectively.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In the machine for skiving leather hereinbefore described the combination of
two feed wheels B C of different sizes revolving at the same speed and adjustable
in relation to each other substantially in the manner and for the purpose described
and illustrated in the accompanying drawings.
2. In a machine for skiving leather the combination with the feed wheels of a.
knife such as J adjustable in relation thereto and the cutting angle of which may
be varied in relation to the said feed wheels substantially in the manner and for the
purpose described and illustrated in the accompanying drawings.
3. In a machine for skiving leather the combination with the feed wheels and
the skiving knife of a clamp plate such as K K³ substantially as described and
illustrated in the accompanying drawings.
4. The improved machine consisting of the parts constructed arranged and
operating substantially in the manner and as and for the purpose described and
illustrated in the accompanying drawings.
Dated this 30th day of January 1802
W. P. THOMPSON & BOULT,
Agents for the Applicants.