Improvements in the Construction of Tools or Apparatus for Cutting Cloth and other Material.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Construction of Tools or Apparatus for Cutting
Cloth and other Material.
We, GEORGE COLE BOROUGHS, Gentleman, and JOHN JACKSON, Engineer, of
Almeric House, Almeric Road, London, in the County of Surrey, do hereby declare
the nature of our invention to be as follows:-
Our invention relates to the construction of tools or apparatus for cutting cloth
or other material, but more particularly relates to improvements in the formation
of the frame, and the manner in which the two rotary cutting discs are constructed
and connected for cutting tools as mentioned and described in our application for
Letters Patent entitled Improvements in Tools or Apparatus for cutting cloth and
other materials numbered 15903 and dated July 18th 1896.
The objects of our improvements are the production of cheap and effective tools
that may be constructed chiefly from stampings.
We construct our frame from one piece of sheet metal and form its front by
bending a portion of the metal over half round shaped and a portion of the edge of
the metal at the back we bend out, at a right angle, so that it will become flush
with the face of the lower cutter. The upper and lower cutting discs we construct
from thin sheet steel having tapered and sharpened edges, we form a hole through
the centre of the upper one, that it may rotate freely upon a pin fixed in a recess
formed in the upper part of the frame. We place a thin metal washer, having a
slightly turned edge flatly against the lower cutter and flatly against this washer
we place a thin disc of flexible rubber, against this rubber disc we place a small
thin washer and a pinion or small gear wheel, we thread them-all centrally upon a
collet or short tube and secure them together by riveting or screwing. We place
the whole of the discs and collet upon a pin fixed in the lower part of the frame
that it may run freely thereon, and at such a distance from the upper cutter that
a small portion of its edge may overlap and become pressed between the front
washer and the lower cutting disc, the rubber disc gives the desired pressure, and
thus presses the two rotary cutters together and ensures frictional rotation of the
upper cutter. Rotary cutters constructed in this manner may be erected and
actuated in cutting apparatus as described in our aforesaid application for Letters
Patent. In some cases a spring washer may be used instead of the rubber disc.
Dated this 3rd day of February 1897.
GEORGE COLE BOROUGHS.
JOHN JACKSON.

page_text: Improvements in the Construction of Tools or Apparatus for Cutting
Cloth and other Material.
We, GEORGE COLE BOROUGHS, Gentleman, and JOHN JACKSON, Engineer, of
Almeric House, Almeric Road, London, in the County of Surrey, do hereby d
the nature of this invention and in what manner the same is to be performe, t
particularly described and ascertained in and by the following statement:
3
To illustrate our invention we will refer to the annexed sheet of drawings.
Figs. 1. 2. and 3 show a front, an end, and a plan view of the improved cutting
apparatus complete. Figs. 4. and 5 show a front, and end view of the improved
cutting discs, and the manner in which they are built up, similar letters of refer-
ence are carried out in all the five figures. In Fig. 3. we do not show the pin
marked C.
In
A frame formed by stamping in Figs. 1. 2 & 3. is marked A in which are fitted
the two cutting discs B. B the lower cutter being driven by the driving wheel
marked B and the cog wheel marked B2 into the cog wheel marked B³.
Figs. 4. & 5 the upper and lower cutting discs marked B B we construct from thin
sheet steel having tapered and sharpened edges, we form a hole through the upper
one that it may rotate freely upon a pin marked C fixed in a recess formed in the
upper part of the frame marked A. We place a thin metal disc or washer
marked D having a slightly turned edge flatly against the lower cutting disc, and
flatly against this said washer we place a thin disc of flexible rubber marked D¹
against this rubber disc we place a small thin washer marked E and a pinion or
small gear wheel marked B³, we thread them all centrally upon a collet, or short
tube marked E¹ and secure them together by riveting or screwing. We place the
whole of the discs and collet upon a pin marked F fixed in the lower part of the
frame, that it may run freely thereon and at such a distance from the upper cutter
that a small portion of its edge may overlap and become pressed between the front
washer D and the lower cutting disc B the rubber disc gives the desired pressure
and thus presses the two rotary cutters together and insures frictional rotation of
the upper cutter. In some cases a spring washer may be used instead of the rubber
dise marked D and the lower cutting disc B and the cog wheel B³ may be secured
to the collet, and the other parts D. D¹. and E, prevented from independant
rotation by a pin or flat upon the collet, and the cutting disc marked B may be
placed on either the right, or the left side, or above, or below the cutting disc B
so that transverse oscillation and grip are still maintained. Rotary cutters con-
structed in this manner may be erected and actuated in cutting apparatus as
described in our Letters Patent entitled Improvements in tools or apparatus for
cutting cloth and other materials, No. 15903, dated July 18th 1896.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, v we declare that what we
claim is:
1. The formation of a frame in the manner and for the purposes as herein
described and specified.
2. The gripping of a cutting disc for the purposes of rotation and cutting as
herein described and specified.
Dated thin 2nd day of Nam
1007
GEORGE COLE BOROUGHS.
JOHN JACKSON.