Improvements in Machinery for Cutting the Pile of Woollen, Cotton, or other Corded Fabrics.
Year: 1891

page_text: Date of Application, 1st May, 1891
Complete Specification Left, 21st Sept., 1891-Accepted, 31st Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Cutting the Pile of Woollen, Cotton,
or other Corded Fabrics.
We, CHARLES WILLIAM KEIGHLEY, and THOMAS BURNUP KEIGHLEY, of
the firm of Lockwood & Keighley, of Upperhead Mills, Huddersfield in
the County of York, Woollen Cord Manufacturers, and WILLIAM NETHERWOOD,
of the same place, Cord Cutter, do hereby declare the nature of this invention
to be as follows:-
Our invention relates, firstly, to apparatus to be used in connection with the
knife employed to cut the pile of corded fabrics in parallel rows, the object of our
invention, being to stop the machine automatically when the knife enters too
deeply into the pile, and cuts or scratches the foundation or back of the fabric; or
when the knife is not cutting the pile sufficiently deep; or when the knife jumps
out of the race; and also when the knife pierces the fabric.
For the purpose of stopping the machine when the knife is acting in such a
manner as to cause any of the above named faults, we attach to the lever arm
carrying the knife a finger or pointer, which enters into and follows along the
race being cut by the knife. The finger or pointer is held in position by an
oscillating spring-catch or trigger, but when the knife produces any one of the first
three undesirable effects above mentioned, the point of the finger is immediately
caught, the force of which overcomes a spring attached to the trigger whereby
the rear part of the finger is released, permitting a spiral spring to draw the
finger back, the motion of which acts upon a cord or wire in communication with
the stop rod mechanism, whereby the machine is immediately stopped. If the
knife acts in such a manner as to cause the fourth fault to take place, i.e. to pierce
the fabric, it oscillates or partially turns over, in doing which the knife carrier acts
upon the point of the finger previously mentioned, when the action of the parts in
releasing the trigger would also be performed.
In order that the point of the knife may not bear the weight of the hinged lever
which carries it, the end of the latter is provided with a vertical finger which bears
upon the travelling fabric, whereby the weight of the lever arm is borne by the
fabric, but in order that a proper pressure may be placed upon the knife, a flat
spring is made to bear upon it, which gives the required rigidity to the knife
when cutting.
Dated this 20th day of April 1891
TASKER & CROSSLEY,
Halifax, Agents.
COMPLETE SPECIFICATION.
Improvements in Machinery for Cutting the Pile of Woollen, Cotton,
or other Corded Fabrics.
We, CHARLES WILLIAM KEIGHLEY and THOMAS BURNUP KEIGHLEY, of
the firm of Lockwood & Keighley, of Upperhead Mills, Huddersfield, in the
County of York, Woollen Cord Manufacturers, and WILLIAM NETHERWOOD
of the same place, Cord Cutter, 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 :-
Our invention relates to apparatus to be used in connection with the knife
employed to cut the pile of corded fabrics in parallel rows, the object of our

page_text: improvements being to stop the machine automatically when the knife enters too
deeply into the pile and cuts or scratches the foundation or back of the fabric;
or when the knife is not cutting the pile sufficiently deep; or when the knife
jumps out of the race; and also when the knife pierces the fabric.
For the purpose of stopping the machine when the knife is acting in such a
manner as to cause any of the above named defects, we attach a finger or pointer
to the lever arm carrying the knife, which pointer enters into and follows along the
race being cut by the knife. The finger or pointer is held in position by an
oscillating spring-catch or trigger, but when the knife produces or causes any one
of the first three faults or defects above mentioned, the point of the finger is
immediately caught by the travelling fabric, the force of which overcomes a spring
attached to the trigger, whereby the rear part of the lever arms cause the finger
to be released, permitting a spiral spring to draw the arm back, the motion of
which acts upon a cord or wire in communication with the stop rod mechanism,
whereby the machine is immediately stopped. If the knife acts in such a
manner as to cause the fourth defect or fault to take place, i.e. to pierce the fabric,
the said knife will oscillate or partially turn over, in doing which the knife carrier
acts upon the point of the finger previously mentioned, when the action of the
parts in releasing the trigger would also be performed.
In order that the point of the knife may not bear the weight of the hinged lever
arm which carries it, the end of the latter is provided with a vertical finger which
bears upon the travelling fabric, whereby the weight of the lever arm is borne by
the fabric, but in order that a proper pressure may be placed upon the knife, a
flat spring is made to bear upon it, which gives the required rigidity to the
knife when cutting.
Such being the nature and object of our invention, we will now refer to the annexed
drawings illustrative thereof, wherein Fig. 1. is front elevation of the cutting knife
and parts connected therewith, and Fig. 2 is plan view of same. No. 1 is the
framework of the machine, 2 the travelling fabric, passing over the tension
roller 6. The radial arm is shewn at 8, and is capable of working upon a fulcrum;
7 is the cutting knife carried by the link 3, capable of oscillating when required
upon the pivot 4. To the radial arm 8 we now attach a horizontal sliding bar 5,
to which is attached by set screws or other means a finger or pointer 9 (see enlarged
view Fig. 3). When the knife is cutting the fabric the pointer 9 follows in the
groove cut by the knife, during which time the rear end of the horizontal bar 5 is
held in that position by a tumbling catch or trigger 10 (see Fig. 4) such tumbling
catch being pressed against the end of the horizontal bar 8 or against a projection
thereon by means of the spiral spring 11. If, however, the knife is cutting too
deeply and scratches the foundation of the fabric, or if the knife jumps out of its
race, the pointer 9 will catch or be caught by the travelling fabric, the motion or
force of which overcomes the spiral spring 11 in connection with the tumbling
lever, whereby the rear end of the horizontal arm is released, permitting the long
spiral spring 12, which is connected to the horizontal arm 8, to jerk or draw the
pointer away, as shewn in dotted lines of Fig. 1, in doing which the vertical
finger 13, attached to the rear end of the said bar 5, comes into contact with
the wire or cord 14, causing such cord to pull sideways the rod 51, whereby the
stop rod mechanism (not shewn) is set in motion and arrests the progress of the
machine.
If the knife 7 pierces the fabric, which sometimes happens, the knife is thereby
caused to assume a vertical position, in doing which the link 3 would oscillate and
strike the forward end of the horizontal bar 5, which would overcome the spiral
spring 11 of the tumbling lever and act upon the cord 14 so as to stop the machine
in the manner already described.
In order that the point of the knife may not bear the weight of the radial arm 8,
the end of the latter is provided with a short finger or stud 15, which bears upon
the travelling fabric, whereby the weight of the radial arm is borne by the fabric,
but in order that a proper tension may be placed upon the knife 7, a flat spring 16

page_text: is made to bear upon it, which gives the required rigidity to the knife when
cutting.
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 :-
Firstly. In a machine for cutting the pile of corded fabrics, the use of an instru-
ment or pointer 9, which on catching the fabric in any of the ways described, sets
into motion. the stop rod mechanism for the purpose of stopping the machine.
Secondly. In a machine for cutting the pile of corded fabrics, the use of a
tumbling lever or trigger mechanism, in combination with an instrument
pointer 9, which on catching the fabric in any of the ways described, sets into
motion the stop rod mechanism for the purpose of stopping the machine.
or
Thirdly. In a machine for cutting the pile of corded fabrics, the use of the
vertical finger or stud 15 for the purpose of preventing the knife bearing the
weight of the lever arm, as described.
Dated this 18th day of September 1891.
TASKER & CROSSLEY,
Halifax and Huddersfield, Agents.