An Improved Machine for Bevelling or Cutting Leather and the like.
Year: 1895

page_text: Date of Application, 9th Nov., 1895
Complete Specification Left, 9th Nov., 1895-Accepted, 8th Aug.,
1896
PROVISIONAL SPECIFICATION.
An Improved Machine for Bevelling or Cutting Leather and
the like.
We, RICHARD LLOYD, JOHN MASON YATES and LOUIS ALLEN KNIGHT
trading as Lloyd, Yates and Knight, Engineers of Stone Road, Stafford, do hereby
declare the nature of this invention to be as follows:-
Our invention relates to an improved machine for bevelling or cutting leather
and the like, and consists essentially in forming the usual circular cutter, formed
of three removable blades, in one piece and so mounting it that it may be readily
removed from the spindle for the purpose of sharpening or the like.
The cutter spindle is mounted in bearings carried by a suitable frame and is
capable of being rotated in any convenient manner.
The cutter is formed with three or more bevel-shaped cutting teeth or blades
and is held in a suitable bevel faced holder having openings therein to allow of the
cutting teeth or blades to protrude. This holder is secured on one end of the
spindle, the other end carrying a suitably shaped emery wheel for the purpose of
sharpening the cutter.
An adjustable guard or guide, to allow for different thicknesses of material
being bevelled and also to allow of varying the width of the bevel, is carried by an
arm on the frame and is so arranged as to be in close proximity to the front or
cutting face of the cutter and to be easily swung clear thereof when it is necessary
to remove the cutter from its holder.
When the cutter requires sharpening it is unshipped from its holder on the
spindle and is adjustably secured in an adjustable holder mounted on a swinging
arm carried by the frame, in such a position as to allow of the teeth or blades of
the cutter being swung across the face of the
It will of course be
wheel.
emery
understood that each tooth or blade is ground singly, the cutter being rotated in
the holder after one tooth or blade is ground until the next tooth or blade is in the
required position for grinding.
Datod this 10th dow of A 1908
the like.
RICHARD LLOYD, JOHN MASON YATES and LOUIS ALLEN KNIGHT,
trading as Lloyd Yates & Knight Engineers Stone Road Stafford do hereby
declare the nature of this invention and in what manner the same is to be
performed, to he particularly described and ascertained in and by the following
statement :-
Our invention relates to an improved machine for bevelling or cutting leather

page_text: invention.
Figure 2 is a view in end elevation thereof.
Figure 3 is a view in plan thereof.
Figure 4 is a view in end elevation thereof showing the arm carrying the
adjustable guard removed.
Figure 5 is a view in end elevation of such arm and adjustable guard.
Figures 6, 7 and 8 are views in front elevation, side elevation and plan
respectively of the cutter.
Figure 9 is a view in front elevation of part of the device for holding the cutter
in position during grinding, and
Figure 10 is a view in side elevation thereof, partly in section.
Throughout the views similar parts are marked with like letters of reference.
The
On a frame A in bearings a a is carried a spindle B capable of being driven by
means of the pulley C. On one end of the spindle B is mounted the cutter D
provided with bevel shaped cutting teeth or blades d of the shape shown.
cutter is fixed to the spindle B by a nut b or in any other suitable manner.
A shield E having a bevel face is also mounted on the spindle and is provided with
openings e to allow of the teeth or blades d of the cutter D to project beyond the
face of the shield. The shield E is fixed to the spindle by means of a screw e or
in any other convenient manner so as to allow it to be shifted backwards or
forwards on the said spindle and thereby regulate the amount the teeth or blades d
of the cutter D project through the openings e and thus regulate the depth of cut.
Mounted in front of the bevel faced shield E and in the same axial line as the
spindle B is a sleeve F which is adapted to slide over the end of the spindle B and
abut against the flat circular portion of the cutter D, thus forming a rest for the
leather or other material to be bevelled and preventing it from being pushed too
far into the machine. This sleeve F is adjustably mounted on an arm G which is
fixed to an arm a¹ of the frame A. The arm G is held in position and prevented
from turning by means of a pin a² on the arm a¹ engaging with a hole g formed in
the boss of the arm G. The boss of the arm G is also provided with another
hole g with which the pin a2 engages when the arm is swung clear to allow of the
'cutter D being removed or adjusted.
To allow for different thicknesses of leather or material being bevelled and also
to allow of varying the width of the bevel, a guard H is mounted on one side of
the sleeve F which is adjusted by means of a nut h threaded on the pin b₁ to
which the guard is fixed. The guard H is controlled by means of a spring h³
Bo as to prevent the jamming of the leather or other material whilst being
bevelled.
On the free end of the spindle B is mounted a suitably shaped emery wheel I,
adapted to grind the blades or teeth d of the cutter D, for this purpose the cutter D
is mounted on a holder K and secured thereto by means of a spring k and nut k¹.
The spring allows the cutter a slight yielding movement and prevents too much
pressure being put upon the emery wheel whilst grinding. This holder K is
provided with a spring controlled stud k which is adapted to engage the backs or
non-cutting edges of the blades or teeth d of the cutter and so ensure that all the
faces or cutting edges of the blades or teeth are ground equally. The holder K is
adjustably mounted on a pin carried by a block L which is free to swing on a
projection M carried by the frame A. To grind the blades or teeth of the cutter,
the holder K is adjusted approximately to the position shown in Figure 3, the
holder and with it the cutter is then swung across the face of the emery wheel by
means of the handle on the block L. After the first blade or tooth is sharpened
the cutter is rotated on its holder until the spring controlled stud k³ engages with
the back or non-cutting edge of one of the other blades or teeth.

page_text: 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) A machine for bevelling or cutting, leather and the like substantially as.
hereinbefore described and illustrated by the accompanying drawing.
(2) In a machine for bevelling or cutting leather and the like, a circular cutter
having two or more cutting blades formed in one piece with it and adapted to
operate in the manner and for the purpose set forth.
(3) In a machine for bevelling or cutting leather and the like, the combination.
with the cutter D of the shield E as and for the purpose set forth.
(4) In a machine for bevelling or cutting leather and the like, the combination.
of the cutter D, of the shield E and of the guard H, as and for the purpose set
forth.
(5) In a machine for bevelling or cutting leather and the like, the combination
with the bevelling or cutting mechanism, of mechanism for grinding the cutter,
substantially as hereinbefore described and illustrated by the accompanying
drawing.
1
ST. 1906
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.