Improvements in Machinery for Shearing or Cutting Textile Fabrics.
Year: 1890

page_text: Date of Application, 17th May, 1890
Complete Specification Left, 17th Feb., 1891-Accepted, 21st Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Shearing or Cutting Textile
Fabrics.
We, THOMAS RUPERT KAY, of 16, Park Terrace, Keighley, in the County of
York, Finisher, and ROBERT CAMPBELL YOUNG, of 16, Cunliffe Terrace,
Manningham aforesaid, Finisher, do hereby declare the nature of this invention to
be as follows:-
This invention relates to improvements in that class of machinery for shearing
or cutting textile fabrics in which spiral cutters are employed in combination with
a stationary blade and in which the ends of the fabric are connected together by
a wire, thread or other means for the purpose of passing the fabric through the
machine in the form of an endless band. The object of the invention is to prevent
the wire connection or other projection passing said cutting mechanism without
the knowledge of the attendant and thus avoid breaking or injuring it.
The said improvements consist in the employment of a stopping device arranged
to stop the machine as soon as any projection liable to damage the cutting
mechanism approaches such mechanism.
For this purpose we employ a transverse guide or rest over which the fabric is
passed before reaching the cutting mechanism, and immediately above said guide
or rest and preferably adjustable in relation thereto we mount a guard bar fitted
in slides or mounted upon arms or levers so as to be capable of more or less
horizontal motion.
In operation this guard bar is adjusted in relation to said plate or rest so that any
abnormal projection on the fabric liable to injure the cutting mechanism first comes
in contact with the guard bar and carries it along with it, and this motion of the
bar is arranged to release a catch supporting a weighted lever which immediately
drops and operating.the belt fork throws off the belt and stops the machine. The
various parts are so constructed and arranged that restarting the machine restores
them to their normal position.
Said guard bar is also arranged that it can be lifted by the attendant to allow
any projection to pass if he is in position to also lift the spiral cutters.
We may arrange said guard bar to operate an audible alarm preparatory to or
instead of stopping the machine.
Dated this 16th day of May 1890
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
Improvements in Machinery for Shearing or Cutting Textile
Fabrics.
We, THOMAS RUPERT KAY, of 16, Park Terrace, Keighley, in the County of
York, Finisher, and ROBERT CAMPBELL YOUNG, of 16, Cunliffe Terrace,
Manningham aforesaid, Finisher, 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 :-
This invention relates to improvements in that class of machinery for shearing or
cutting textile fabrics in which spiral cutters are employed in combination with a
stationary blade and in which the ends of one or more pieces of fabrics are con-
nected together by a wire, thread, or other means for the purpose of passing the
abric through the machine in the form of an endless band. The object of the
D 077

page_text: invention is to prevent the wire connection or other projection passing said cutting
mechanism without the knowledge of the attendant and thus avoid breaking or
injuring it.
The said improvements consist in the employment of a stopping device arranged
to stop the machine as soon as any projection liable to damage the cutting
mechanism approaches such mechanism.
For this purpose we employ a transverse guide or rest over which the fabric is
passed before reaching the cutting mechanism, and immediately above said guide
or rest and preferably adjustable in relation thereto we mount a guard bar fitted in
slides or mounted upon arms or levers so as to be capable of more or less horizontal
motion.
In operation this guard bar is adjusted in relation to said plate or rest so that
any abnormal projection on the fabric liable to injure the cutting mechanism first
comes in contact with the guard bar and carries it along with it and this motion of
the bar is arranged to release a catch supporting a weighted lever which immediately
drops and operating the belt fork throws off the belt and stops the machine. The
various parts may be so constructed and arranged that restarting the machine
restores them to their normal position. Said guard bar is also arranged that it
can be lifted by the attendant to allow any projection to pass if he is in position to
also lift the spiral cutters.
To fully describe our invention reference is made to the accompanying drawings
forming a part of this Specification, in which similar letters of reference indicate
corresponding parts in each of the figures.
Figure 1, is a front elevation of the end frame and such other parts of a shearing
machine as are necessary to illustrate the application of our improvements.
Figure 2, is a plan view, and
Figure 3, an end view of the same.
The arrangement for throwing the belt by hand on and off the fast pulley A on to
the loose pulley B is of the usual form employed for this class of machinery. It
consists of the belt fork C pivoted to the bracket D fixed to the end frame E and
having its lower end F projecting at right angles in the form of a foot piece to
engage the foot lever G pivoted on the bracket H. The spring J is provided to
normally hold the fork C in a position to keep the belt on the loose pulley B but
when the fork is moved into the position shown in the drawing to pass the belt on
to the fast pulley the end a of the foot lever drops and holds the fork in that
position. When a is raised by the pressure of the attendant's foot upon the opposite
end b of the lever G it releases F and allows the fork under the influence of the
spring J to move and pass the belt on to the loose pulley.
To automatically throw off the belt we employ a guard bar d at the front of the
machine immediately above the guide or rest e.
The ends of the bar d are mounted
in the slots d' d' formed in the arms f, f pivoted by their ends g to the end
frames E and E. The front ends of the arms are connected by the hand
rail provided for the attendant to lift the arms and the bar d away from the
rest when he is in a position to also lift the spiral cutters and allow any pro-
jection to pass.
The rod i mounted in the vertical guides; carries a weight kat
the bottom and is held up in the position shown by the catch m on the arm n rigidly
connected to the arm by the short shaft t mounted in the end frame E.
The fabric enters the machine through the space between the rest e and the
bar d which are so arranged in relation to each other that any abnormal projection
on the fabric engages d as it enters the machine and carrying it along the slots d¹ it
comes in contact with the arm and vibrating it disengages the catch m allows the
weight to fall on to the end 6 of the lever G thus raising a and releasing F the
belt fork at once passes the belt on to the loose pulley. The spring s is provided
to keep the catch m against the rod i.
We prefer to employ the handle to lift the rod and weight into position
after the machine has been started again as we find it somewhat complicated to
automatically raise them when this class of belt fork mechanism is employed but in

page_text: case the belt fork is mounted on a slide operated by a lever in a similar manner to
that used in many other kinds of machinery we employ a spring arranged to
normally hold the slide in the position it occupies when the belt is off and a catch
arranged and operated similar to m is provided to hold said slide in the position it
occupies when the belt is on. However as the belt fork mechanism shown is
generally employed for shearing machines we have only shown our improvements
applied thereto.
A. bell or other audible alarm may be arranged to be operated by the said guard
bar but we do not find it necessary.
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 :-
The combination with a shearing machine of a stopping device arranged to
automatically throw off the belt before any abnormal projection reaches the
cutting mechanism, substantially as herein shown and described and illustrated in
the accompanying drawings.
Dated this 16th don of h
1001
DRACUP & NOWELL,
Bradford, Agents.