IMPROVEMENTS IN LOOKS FOR WEAVING
Year: 1868

page_text: PROVISIONAL SPECIFICATION left by James Hudson and Christopher
Catlow at the Office of the Commissioners of Patents, with their
Petition, on the 15th January 1868.
We, JAMES HUDSON, of Burnley, in the County of Lancaster,
Machine Maker, and CHRISTOPHER CATLOW, of the same Place, Over-
looker, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN LOOKS FOR WEAVING," to be as follows:-
This Invention consists, firstly, of an improved construction and
arrangement of apparatus for "letting-off" or delivering yarn from the
beam of looms which we effect as follows:-On a cross shaft near the
back of the loom we place a cranked lever, one arm of which supports
the bearer or vibrator, and to which a set or regulating screw for the
purpose herein-after mentioned is attached; the other arm of said lever
extends along the side frame of the loom to an eccentric on the crank
shaft. A second crank lever is secured on the cross shaft and works
loosely. thereon, one arm of which is opposite and near the arm of the
first-mentioned lever carrying the bearer or vibrator, the other arm
extends over the ratchet wheel; to this arm is attached a spiral or
blade spring, on the other end of which is a screw and wing nut
(supported by a bracket attached to a cross rail) for the purpose of
keeping a projection on the said lever in contact with the teeth of the
ratchet wheel.

page_text: The action of the loom is as follows:-When the eccentric is at its
greatest lift or throw the lever rests thereon, and the whole is firm for
the "beat-up" on the eccentric moving the tension or drag of the
warp on the bearer or. vibrator attached (as herein-before mentioned) to
the crank arm of this lever, depresses the said lever and bearer or
vibrator, and thus brings the head of the "set" or regulating screw
in contact with the crank arm of the lever connected with the ratchet
wheel, causing the said lever to move on its shaft, and thus raise the
projection thercon clear of the teeth, the beam giving off the yarn the
eccentric instantly raising the lever and bearer ready for the next beat
of the slay. Or instead of the apparatus above described we attach a
hook to the bearer or vibrator, to which hook is attached a chain which
we pass round a grooved wheel or pulley on the end of the warp
beam, and secure the said chain to one end of a rocking lever working
on a stud attached to the side frame (or other convenient part) of the
loom. To the other end of the rocking lever is attached a spiral spring
having a rod connected therewith, which is chased or screwed, and
receives thereon a plate wheel having projections or teeth thereon, the
rod and wheel being supported by a bracket attached to the side frame
of the loom. When from the decrease or change of diameter of the
warp beam the tension becomes too great the bearer or vibrator is
depressed so as to bring a finger (attached to the end of said bearer or
vibrator which is elongated for the purpose) in contact with the pro-
jections or teeth on the plate wheel, and by moving the said wheel on
the thread of the rod connected with the spiral spring ease the friction
of the chain on the pulley of warp beam, and consequently reduce
the tension on and deliver the warp; we thus obtain a self-acting
adjustment.
The second part of our Invention relates to a means of regulating the
shedding, which we effect by means of straps or chains (working against
guide pullies) attached to the treadles and to the "jacks;" as the straps
or chains arc attached to the treadles nearer or further from the fulcrum
on which the said treadles work the shed is increased or decreased.