Improved Means of or Apparatus for Applying Friction or Drag to Warp Beams in Looms for Weaving.
Year: 1886

page_text: Date of Application, 4th Dec., 1886.
Specification Accepted, 5th Jan., 1887.
COMPLETE SPECIFICATION.
Improved Means of or Apparatus for Applying Friction or Drag to
Warp Beams in Looms for Weaving.
We, CHARLES Fox of 3, Bankhouse Street, Burnley, in the County of Lancaster,
Accountant, and PETER CROSSLEY of Burnley aforesaid, Cloth Looker, do hereby
declare the nature of our invention for IMPROVED MEANS OF, OR APPARATUS FOR
APPLYING FRICTION OR DRAG TO WARP BEAMS IN LOOMS FOR WEAVING, 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 the letting off or delivery of the warp in looms for
weaving, and is designed to dispense with weights and levers now in use, and to
provide a simple and easy method of letting back the warp; by which means, a
perfectly even and uniform tension is maintained, a better fabric produced, and a
greater length of cloth obtained, from a given length of yarn.
For this purpose, a chain, cord, or band is wound one or more times, round the
collar of the warp beam, and secured to a spiral spring, the upper end of which is
attached to a bolt that passes through the eye of a bracket, fixed to the loom side.
A nut or hand wheel is provided with a screw thread that corresponds with the
thread at the extremity of the bolt, and by which the tension of the warp may be
regulated and adjusted as required.
The other end of the chain, cord, or band is attached to a stud, projecting from below
the centre or fulcrum of a lever, in such a manner, that, when the lever is depressed,
the stud (which is fixed to the lever) will be raised from its lowest position to slacken
the chain, cord, or band, and relieve the yarn roller entirely from friction, to let back
the warp, after which the lever is moved back against a stop piece, to its original
position. This operation being effected, so as not to interfere, in the least, with the
adjustment of the bolt and hand wheel, above described, the same tension being main-
tained after, as before, letting back the warp.
And in order that our invention may be properly understood, and carried into
practical effect, we have hereunto attached the accompanying sheet of drawings,
illustrative thereof, the same letters referring to the same parts in both figures.
Fig. 1, represents the back portion of a power loom, and Fig. 2, is an enlarged
view in section, taken through the back rail of the loom. A is the side frame of the

page_text: loom; B, a bracket through the eye of which passes a bolt C, which is provided with a
nut or hand wheel D, by which the tension of the warp is regulated. To the lower end
of the bolt is attached a spiral spring E, to which is connected one end of a chain F,
wound one or more times round the collar of the warp beam G. The other end of the
chain is attached to the stud H, projecting from below the fulcrum or stud I, of
the lever J, secured to the back rail K. Upon the depression of the handle or lever J,
the stud His raised from its lowest position, whereby the chain is slackened, and the
friction instantly relieved from the yarn roller, when the warp is at liberty to be let
back as may be required; after which the lever may be moved back against the stop
pioce M to its original position, and the friction or drag upon the yarn roller again
applied.
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 :-
Firstly, The general arrangement and combination of parts, for applying friction or
drag to the yarn roller, substantially as shown and described.
Secondly, The lever J, and stud H, substantially as and for purpose set forth.