IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1880

page_text: LETTERS PATENT to Richard Hindle, Mill Manager, and Georgo Greenwood,
Mechanic, both of Blackburn, in the County of Lancaster, for an Invention of
"IMPROVEMENTS IN LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said Richard Hindle and
George Greenwood at the Office of the Commissioners of Patents on the
18th October 1880.
RICHARD HINDLE, Mill Manager, and GEORGE GREENWOOD, Mechanic, both of
Blackburn, in the County of Lancaster. "IMPROVEMENTS IN LOOMS FOR
WEAVING,"
This Invention relates to improvements in mechanism for regulating the " letting
off" the warp from the beam, for adjusting and determining the degree of tension
on the warp during the letting off, and for facilitating "letting back or slacking
the warp when requisite.
According to this our Invention the weight rope at each end of the beam is
attached to one end of a L or cranked lever, having its fulcrum on a stud fixed in
the cross rail of the loom; to the other end of each of the said L levers is attached
a rod having expansion and contraction by means of a spring, the other ends of the
said rods having screw adjustment, and being connected with a lever, which, by
connecting link and hand lever, is the means by which the amount of tension put
upon the warp is regulated, there being a catch and rack for securing the hand lever
in its predetermined position.
This action of the apparatus is as follows:-The attendant on the loom, on using
the hand lever, causes the intervening lever and spring connecting rods to act
equally on the L levers and weight ropes, thereby putting as much drag on the
ropes and neck or ruffles of the beam as required, and so in the letting off, the
catch being raised at once removes the tension from the spring levers and weighting
ropes and the beam is free to turn back.
According to another arrangement we employ two L levers, to one arin of which
the weighting ropes are attached by a gripper hook through nuts in a clip; on the
other end of the said lever is passed the chased or screwed end of a hooked rod,
which by its other or hooked end connects or is attached to a spiral spring, there
being one of such chased hooked rods to each L lever, the spiral spring being
midway the hooks, so that by the use of a hand or catch wheel or a key when the
rods are turned, the screws thereon being right and left handed will distend the
spiral spring and put more or less tension on the ropes as required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Richard Hindle and George Greenwood in the Great Seal Patent
Office on the 16th April 1881.
RICHARD HINDLE, Mill Manager, and GEORGE GREENWOOD, Mechanic, both
of Blackburn, in the County of Lancaster. "IMPROVEMENTS IN LOOMS FOR
WEAVING."
This Invention relates to improvements in mechanism for regulating the "letting
off" the warp from the beam, for adjusting and determining the degree of tension
on the warp during the letting off, and for facilitating "letting back" or slacking
the warp when requisite.
According to this our said Invention the weight rope at each end of the beam is
attached to one end of a L or cranked lever, having its fulcrum on a stud fixed in
the cross rail of the loom; to the other end of each of the said L levers is attached
a rod, giving expansion and contraction by means of springs, the other end of the
said rod having screw adjustment generated by means of hand rachet-wheel, by
means at which the amount of tension put upon the warp is regulated, there
being a holding catch for securing the hand wheel in its predetermined position.
This action of the apparatus is as follows:-The attendant on the loom, on using
the hand ratchet wheel, causes the intervening lever and spring connecting rods to
act equally on the L levers and weight ropes, thereby putting as much drag on the
ropes and neck or ruffles of the beain as required, and so in the letting of the catch
being raised at once removes the tension from the spring levers and weighting
ropes and the beam is free to turn back.
According to another arrangement we employ two L levers, to the one arm of
which the weighting ropes are attached by a gripper hook," described in 2
Specification of Letters Patent granted to us, dated 4th August 1880, No. 3193;
through end of the said levers is passed the chased or screwed end of a hooked rod,
which by its other or hooked end connects or is attached to a spiral spring, there
being one of such chased hooked rods to each L lever, the spiral spring being
midway the hooks, so that by the use of a hand or catch wheel or a key when the 3
rods are turned, the screws thereon being right and left handed will disturb the
spiral spring and put more or less tension on the ropes as required.
Such being the nature and object of this our said Invention we will now proceed
to describe the particulars thereof, and in order that the Invention may be fully
understood we have hereunto annexed 2 Sheets of Drawings illustrative thereof, in 3
which
Fig. 1, Sheet 1, is an elevation of a loom shewing our improved apparatus
applied; the other views are the parts detached and drawn to an enlarged scale;
Fig. 2, Sheet 2, shews the modification referred to.
At 1 is the warp beam; 2, 2, the weight ropes; 3, 3, the gripper hooks; 4 and 5,
the L levers working upon the studs 6, 6, carried by the brackets 7, 7, bolted to
the cross rail 8; at 9, a rod or draw bar screwed or chased at its end 10, and
having the hand ratchet wheel 11 and holding catch 12; the other end of the rod 9
is square or rectangular, and passes through the hole 13 of the spindle 14, carried
by the clip end of the Llever 5; at 15 is a block secured by pin fast to the draw
bar 9, and provided with four holes, in and through which the four hooks 16, 17,
18, and 19 are free to work; the said hooks carry one end of the four spiral
springs 20, the other ends of which springs are attached to the four hooks of the
casting 21 and link 22 attached to the lower part or boss of the L levers 5. As the
hand ratchet wheels 11 is turned its boss acts upon and against a clip in the 5
lower or forked part of the L lever 4; at the same time, by means of the screw 10,
the draw rod 9 will cause the block 15 to be drawn against the cross head of draw

page_text: hook 16, so drawing into use the spiral spring attached to hook 16, and as the hand
ratchet wheel 11 is further turned the draw hook 17 will next bring into use a
second spiral spring. The further turning the ratchet wheel 11 will bring into uso
in succession the hooks 18 and 19 and the spiral spring 20 attached to the said
books, so that it will be seen the weighting of the beam may be adjusted from any
degree of strength of one spring to the combined strength or elasticity of the whole
four springs.
Referring now to the modification, Sheet 2,
1 is a beam; 2, the weight ropes; 3, the grippers; 4 and 5, the L levers carried
on studs 6, 6. The L levers are connected by hooked rods 7 and 8, these having
right and left handed screws thereon working through nuts 10 in the clip or forked
ends 11 of the L levers. At 12 is a spiral spring attached to the hooks of the
rods 7 and 8. At 13 is a ratchet wheel fast on the end of the rod 8, and as such
wheel is turned to the left or right, so will the draw upon the L levers 4 and 5
and the spring 12 be regulated; 14, 14, are guides for rods 7, 8.
Having now fully described the nature and particulars of this our said Invention,
together with. the manner in which the same is to be performed or carried into
practical effect, we would have it understood that we do not claim any of the
parts when considered separately; what we do claim is,-
Firstly. The use in combination of the L levers 4 and 5, draw rod 9, draw hooks
and springs 15 to 20, in manner and for purpose described and illustrated by
Drawings.
Secondly. The use in combination of the L levers 4 and 5, draw rods 7 and 8,
and spring 12, as illustrated by Sheet 2 of the annexed Drawings herein fully
described.
In witness whereof, I, the said Richard Hindle, have, for and on behalf of
myself and the said George Greenwood, hereunto set my hand and seal,
this Thirteenth day of April, in the year of our Lord One thousand eight
hundred and eighty one.
Witness,
WALTER BRIERLEY,
Patent Agent,
Halifax & Blackburn.
RICHARD HINDLE. (L.S.)