IMPROVEMENTS IN SHEARING OR CROPPING MACHINES
Year: 1885

page_text: We, EDWIN MARTIN of Lindley near Huddersfield, Yorkshire Manufacturer and
THOMAS FRED DRAKE of Wellington Street, Lindley, Yorkshire, Cloth Dresser, do
hereby declare the nature of our invention for "IMPROVEMENTS IN SHEARING OR
CROPPING MACHINES" to be as follows:-
Our invention has reference to shearing or cropping machines employed in
finishing cloth; and which consists of a spiral knived roller rotating upon a
stationary bed, upon which the cloth traverses.
In practice it is found that when a knot or other hard substance is at the back
of, or underneath the cloth that the face thereof is caused to stand up or be more
prominent than the other part of the cloth, consequently the rotary cutter shears
off more than is desirable, and sometimes cuts a hole through the fabric.
Our invention consists in providing the said stationary bed with a yielding
surface or cushion at that part where the rotary cutter acts upon the fabric. To
accomplish this we cut a groove in the said bed, into which we insert a length of
india-rubber, preferably tubing, so that when any knot or hard substance is under-
neath the fabric, that the pressure of the cutter shall cause the knot or hard
substance to sink or be depressed into the india-rubber cushion, by which means
the damages at present complained of are avoided.
TASKER & CROSSLEY,
Patent Agents,
1, Commercial Street, Halifax,
Agents for the Applicants.

page_text: .
Improvements in Shearing or Cropping Machines.
We, EDWIN MARTIN of Lindley, near Huddersfield, Yorkshire, Manufacturer and
THOMAS FRED DRAKE of Wellington Street, Lindley, Yorkshire Cloth Dresser do
hereby declare the nature of our invention for "IMPROVEMENTS IN SHEARING OR
CROPPING MACHINES" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:--
Our invention has reference to shearing or cropping machines employed in
finishing cloth, and which consists of a spiral knived roller rotating upon a
stationary bed over which the cloth traverses.
In practice it is found that when a knot or other hard substance is at the back
of, or underneath the cloth that the face thereof is caused to stand up or be more
prominent than the other parts of the cloth, consequently the rotary cutter shears
off more than is desirable, and sometimes cuts a hole through the fabric.
Our invention consists in providing the said stationary bed with a yielding
surface or cushion at that part where the rotary cutter acts upon the fabric, to
accomplish this we cut a groove in the said bed into which we insert a length of
india-rubber (preferably tubing) so that when any knot or hard substance is under-
neath the fabric the pressure of the cutter shall cause the knot or hard substance
to sink or be depressed into the india-rubber cushion by which means the damages
at present complained of are avoided.
In order that our invention may be more fully understood and put into practical
operation, we have annexed hereto the accompanying sheet of drawings where
Fig. 1 shews as much of a shearing machine or "Jerry" as is necessary to illustrate
our improvements.
A is machine frame, B are bars or rods for guiding fabric C to the stationary
bed D; and E is the spiral knived roller which rotates at a high speed for the
purpose of shearing the upper surface of the cloth. Our invention is shewn at F
which consists of a piece of india-rubber (preferably tubing) placed at the apex and
lengthwise of the bed D, so that when knots or other enlargements are at the back
of the cloth, the pressure of the rotary cutter will be such as to cause the said knots
or enlargements to sink into the india-rubber bed, and so avoid damage to the
cloth which would happen if the bed were hard and unyielding.
Fig. 2 shews an enlarged view of the yielding bed which it will be seen is
inserted in a groove formed on the top of the ordinary bed D. Fig. 3 shews the
yielding bed to be composed of a solid bar of india rubber F which is formed
angular, so that as the cloth passes over the edge a of the said india-rubber bar
the ground or root of the cloth is presented to the rotary cutter so as to make the
shearing more effectual.
Although we have shewn and described the use of india-rubber tubing or an
angular shaped bar of india rubber inserted in grooves made in a stationary bed, it
will be apparent that the tube or bar may rest on the top of the said stationary
bed and also that the yielding tube or bar may be of other material than india-
rubber.

page_text: 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; in shearing or cropping machines
The use of the yielding tube or bar F placed at the apex of the cutting bed, such
tube or bar being formed and shaped substantially as herein shewn and employed
for purposes herein set forth.