Improved Means of Regulating the Pressure on Swells in Looms for 'Weaving.
Year: 1893

page_text: Date of Application, 31st Oct., 1893
Complete Specification Left, 13th Nov., 1893-Accepted, 16th Dec., 1893
PROVISIONAL SPECIFICATION.
Improved Means of Regulating the Pressure on Swells in Looms for
'Weaving.
I, JAMES NELSON of Vale Street Mill, Nelson, in the County of Lancaster,
Cotton Cloth Manufacturer, do hereby declare the nature of this invention to be
as follows:-
This invention consists of an improved arrangement operated by the crank arm
in such a manner that it will apply pressure to the swell on the shuttle entering the
box, but on the shuttle leaving the box, it will by the same means be automatically
relieved from pressure.
In carrying out my invention I dispense with the usual spiral spring, which is
secured at one end to a hook on the stop rod near the tongue, and at its other end
is then attached to the sley sword.
In my arrangement, I weld or otherwise fix to the stop rod a projecting arm on
the reverse side of the stop rod to the hook. This arm is bored at its extremity,
and a blade spring fixed thereto by means of a set screw. The other end of the
blade spring bears against a stop-piece or stud on the crank arm in such a manner
that as the crank is moving from bottom to top centre, the blade spring will be
caused to exert additional pressure on the said projecting arm, giving a slight turn
to the stop-rod. This motion is immediately transmitted to the stop-rod finger,
and thereby causes the swell to exert the required pressure against the shuttle on
entering the box. As the crank arm is moving from top to bottom centre, the stud
or stop-piece thereon falls partially clear of, or at least relieves, the blade spring
from pressure, and thus the shuttle is free to move to the opposite box.
Dated this 30th day of Databar 1803
F. RICHMOND,
79, St. James Street, Burnley, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improved Means of Regulating the Pressure on Swells in Looms for
Weaving.
1, JAMES NELSON of Vale Street Mill, Nelson, in the County of Lancaster,
Cotton Cloth Manufacturer do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention consists of an improved arrangement operated by the crank arm
in such a manner that it will apply pressure to the swell on the shuttle entering the
box, but on the shuttle leaving the box, it will by the same means be automatically
relieved from pressure.
In carrying out my invention, I dispense with the usual spiral spring, which is
secured at one end to a hook on the stop-rod near the tongue, and at its other end
is then attached to the sley-sword.
In my arrangement, I weld or otherwise fix to the stop-rod, a projecting arm on
the reverse side of the stop-rod to the hook. This arm is bored at its extremity,
and a blade spring fixed thereto by means of a set screw. The other end of the
blade spring bears against a stop-piece or stud on the crank arm, in such a manner
that as the crank is moving from bottom to top centre, the blade spring will be
caused to exert additional pressure on the said projecting arm, giving a slight turn
to the stop-rod. This motion is immediately transmitted to the stop rod finger,
D

page_text: and thereby causes the swell to exert the required pressure against the shuttle on
entering the box. As the crank arm is moving from top to bottom centre the stud
or stop piece thereon falls partially clear of, or at least relieves, the blade spring
from pressure, and thus the shuttle is free to move to opposite box..
In the accompanying drawings
Fig. 1 is an end view of the sley and crank arm of a loom with my invention
'applied.
A is the projecting arm fixed in any suitable manner to the stop-rod B, to which
is secured the blade spring or springs C by a set screw D, the other end of
which bears against a stud or stop-piece E fixed to crank arm F, in such a manner
that as the said crank arm is moving round from bottom to top centre, the stud or
stop-piece E will with the motion of the crank deflect the blade spring or springs C
upwards. This upward movement of the blade spring raises the projecting arm A
fixed to the stop rod B and imparts motion to the stop rod finger F, which applies
additional pressure to the swell just as the shuttle is entering the box, firmly boxing
the shuttle (before the crank turns top centre) in readiness for the shuttle to be
thrown to the opposite box.
The spring is shewn in its lowest position in dotted lines, and its action with the
movement of the crank will be at once apparent.
I would observe, that should the shuttle fail to be properly boxed or become
trapped in the shed, the spring C by giving motion to the stop-rod in the manner
already described will cause the stop rod tongue G to fall and strike the frog H,
thereby stopping the loom in the ordinary and well known manner.
In Fig. 2 is shewn a modification of my invention. The blade spring C is here
shewn as being secured to the stop-rod tongue G by means of a sliding bracket I
and set screws J, whereby the tension of the spring may be readily adjusted.
If desired, two blade springs C may be used one over the other so that if one
breaks the other will still perform its functions, without the loom having to be
stopped for repairs.
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 improved means of regulating the pressure on loom swells, substantially
as described and illustrated in Figs. 1 and 2.
2. Projection A, blade spring or springs C and stud or stop-piece E, arranged
substantially as described, and illustrated in Fig. 1. for the purpose set forth.
3.. Sliding bracket I in combination with blade spring or springs C for adjustably
securing the same to the stop-rod tongue, substantially as described and illustrated
in Fig. 2.
Dated this 11th day of November 1893.
F. RICHMOND,
79, St. James Street, Burnley, Agent for the Applicant.