Improvements in or connected with Machinery for Shaving Leather
Year: 1897

page_text: Date of Application, 18th Dec., 1897
Completa Specification Loft 17th Sant 1000
Accented
20th nat
4000
PROVISIONAL SPECIFICATION.
Improvements in or connected with Machinery for Shaving Leather,
I, CHARLES FREDERICK STEAD, of Ventnor Street, Leeds, in the County of York,
Leather Manufacturer, do hereby declare the nature of this invention to be as
follows:-
Much difficulty and danger has been experienced in connection with machines
for shaving leather, owing to the liability of the leather being drawn in by the
revolving cutter as it is fed to the machine, and this danger is especially prevalent
where thin leather is being worked.
The object of this invention is to construct apparatus which will effectually
prevent the leather from being drawn in by the revolving cutter, the said apparatus
being of simple construction and not liable to get out of order.
According to my invention, I mount two brackets on the fixed frame of the
machine below the revolving cutter, and a shaft which is carried in bearings
situated in the brackets, carries a cylindrical brush on its central portion and a
belt pulley on either side of the brush. These pulleys are connected to pulleys on
the shaft carrying the revolving cutter by means of belts, in such a manner that
the brush is rotated at or about the same speed as that of the cutter, and as near
as possible to the latter without actual contact therewith. The gearing may be
effected by means of spur wheels or by other suitable means, and any revolving
portion of the machine may be employed for the purpose of rotating the said brush.
Should the leather be drawn in by the revolving cutter, and commence to be
carried on its surface, it is at once removed by the brush, as the bristles of the
latter take the front edge of the leather and return it to its proper path, thus pre-
venting damage to the leather and to the machine, and obviating danger to the
operator.
Data 171.
T
100
Improvements in or connected with Machinery for Shaving Leather.
I, CHARLES FREDERICK STEAD, of Ventnor Street, Leeds, in the County of York,
Leather Manufacturer, 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 refers to apparatus connected with leather shaving machines, in
which a swiftly revolving knife is employed in combination with a smooth roller
ונס מז

page_text: mounted on an adjustable rocking frame; and apparatus constructed according to
my invention when applied to machines of the type above referred to, prevents
thin leather being drawn in by the knife and becoming destroyed in the machine.
The revolving knife which is employed in these machines, rotates at a very fast
speed, and as the blades of the knife form projecting surfaces, a suction is formed
in a similar manner to that caused by a rotating fan. It is this suction that causes
thin leather to cling to the knife and to be drawn into the machine, and the
apparatus hereafter described destroys this suction and also acts as a guide or
help for returning the leather to its proper path should it commence to cling to
the knife.
In order that my invention may be clearly understood, I will proceed to describe
same with reference to the accompanying drawing in which similar letters refer
to like parts in both figures.
Figure 1 is a side view of so much of a leather shaving machine as is necessary
to illustrate my invention, and Figure 2 is a front view of the same machine with
the rocking frame removed.
A is the revolving knife which is driven at a great speed by means of belts B,
and C are belts which transmit motion from bosses L of the knife A to a brush D),
the latter being carried in bearings E mounted on the frame F of the machine.
G is the ordinary rocking frame carrying a roller H at its upper end, and the
treadle motion enables the said roller H to be brought in close proximity to,
but not in actual contact with, the knife A. As before mentioned, the swift
rotation of the knife A creates a suction, which is sufficiently strong to draw thin
leather into the machine and to cause it to cling to the revolving knife A. The
belts C cause the brush D to rotate so that its upper surface is travelling at a high
speed in the opposite direction to that of the under surface of the knife A, and this
reverse action counteracts the suction tendency of the knife A and prevents the
formation of a partial vacuum, thus removing the danger of thin leather being
carried into the machine when being worked.
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:
1. In a leather shaving machine having a swiftly revolving knife and a rocking
frame carrying a smooth roller at its upper end, a rotary brush carried in bear-
ings on the main frame and being driven through suitable belting on the machine,
with its upper surface moving in the opposite direction to that of the adjacent sur-
face of the revolving knife, substantially as set forth.
2. In a leather shaving machine having a swiftly revolving knife A and a rock-
ing frame G carrying a smooth roller H at its upper end, a rotary brush D driven
swiftly by belts C from the bosses L of the knife A, substantially as set forth.
Dated this 17th day of September A.D. 1898.
BREWER & SON,
London and Leeds, Agents for the Applicant.