Improvements in Stop Motions of Looms for Weaving.
Year: 1892

page_text: Date of Application, 8th Dec., 1892
Complete Specification Left, 8th Sept., 1893—Accepted, 7th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Stop Motions of Looms for Weaving.
I, DAVID WHITTAKER of No. 25 Pleasington Street, Witton near Blackburn
in the County of Lancaster, formerly Overlooker now out of business, do hereby
declare the nature of this invention to be as follows:-
:―
This invention relates to improvements in the stop motion or apparatus employed
for stopping a loom when the weft breaks, or when, from any cause, the weft fork
fails to act, the object being to stop the loom with as little delay as possible after
the breaking of the weft or derangement of the weft fork. The invention consists
in a new and improved construction of catch bracket or lever and means of
operating same, and to an improved construction of brake wheel.
According to this invention I employ a fork lever constructed, operated and
operating in the ordinary manner, but having an inclined space or piece formed
on its inner edge. The catch bracket or lever is mounted in the ordinary manner
and to said bracket or lever is cast a short finger having an inclined. under surface
which rests on the inclined space formed on the fork lever.
The periphery of the brake wheel is corrugated, toothed, or roughed, transversely
either over the whole, or a part or parts of its surface, so as to ensure greater
frictional contact between it and the brake shoe.
The brake shoe is connected to the catch bracket or lever in the ordinary way.
The action is as follows:- When the weft breaks, or the weft fork fails to act,
at the beat up of the slay, the fork lever is pushed back and the inclined space
moves from under the inclined finger of the catch bracket, or lever, the latter is
moved on its fulcrum stud, and the brake shoe is applied to the corrugated or
roughened surface of the brake wheel, and the loom is quickly stopped.
A spiral or other spring returns the fork lever to its normal position.
Dated the 2nd day of December 1892
WALTER BRIERLEY,
Penny Bank Chambers, Halifax, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Stop Motions of Looms for Weaving.
I DAVID WHITTAKER of No. 25 Pleasington Street, Witton near Blackburn
in the County of Lancaster, formerly Overlooker, now out of business, 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 the stop motion or apparatus employed
for stopping a loom when the weft breaks, or when, from any cause, the weft fork
fails to act, the object being to stop the loom with as little delay as possible after
the breaking of the weft, or derangement of the weft fork.
The invention consists in a new and improved construction of catch bracket
or lever and means of operating same, and to an improved construction of brake
wheel.
Such being the nature and object of my said invention, the following is a
complete description of same reference being had to the accompanying drawings
in which :-
Fig. 1 is a view in elevation, looking from the inside of the loom of the
improved catch bracket and appliances connected therewith.

page_text: Fig. 2 is an elevation of Fig. 1 shewing also the brake and brake wheel.
Fig. 2 is a detail of Fig. 2.
Fig. 3 is a plan view of Fig. 1.
According to this invention I employ a fork lever 1 constructed, operated and
operating in the ordinary manner, but having an inclined space or piece 2 formed
on its inner edge. The catch bracket or lever 3 is mounted on a fulcrum stud 4 in
the ordinary manner and to said bracket or lever 3 is cast a short curved finger 5
having an inclined under surface 6 which rests on the inclined space 2 formed on
the fork lever 1.
The periphery of the brake wheel 7 is corrugated, toothed, or roughed as at 8
(see Fig. 2) transversely either over the whole, or a part or parts of its surface so
as to ensure greater frictional contact between it and the brake shoe 9, and if
greater frictional contact is desired the brake shoc 9 is corrugated or toothed
transversely so that the teeth or corrugations on the wheel 7 engage with the teeth
or corrugations on the shoe 9.
The brake shoe 9 is connected to the catch bracket or lever 3 in the ordinary
way, by the link or connecting rod 10.
The action is as follows:-When the weft breaks, or from any cause the weft
fork fails to act, at the beat up of the slay, the fork lever 1 is pushed back and
moving on its stud 11, the inclined space 2 moves from under the inclined finger 5
of the catch bracket or lever 3, the latter by gravitation and the weight 12 falls
and moves on its fulcrum stud 4, and the brake shoe 9 is applied to the corrugated
or roughened surface of the brake wheel 8, and the loom is quickly stopped.
A spiral or other spring 13 automatically returns the fork lever 1 to its normal
position when the loom is restarted.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
-
1. The general construction, arrangement and combination of parts constituting
the improved stop motion of looms for weaving as herein described and illustrated
by Figs. 1, 2 and 3 of the accompanying drawings.
2. A catch bracket or lever 3 having a short curved finger 5 in combination
with a fork lever having an inclined space or piece as and for the purpose herein
described and as illustrated by the annexed drawings.
3. In looms for, weaving a brake wheel having its periphery corrugated, roughed,
or toothed transversely in combination with a brake shoe either smooth, corrugated
or toothed transversely as and for the purpose herein described and as illustrated
by Fig. 2 of the accompanying drawings.
Dated thio 7th dor of Santomban 1002
DAVID
WHITTAKER,
By his Agent, Walter Brierley,
Penny Bank Chambers, Halifax.