Improvements in Self-acting Mules and Twiners.
Year: 1889

page_text: Date of Application, 21st May, 1889
Complete Specification Left, 20th Feb., 1890-Accepted, 22nd Mar., 1890
PROVISIONAL SPECIFICATION.
Improvements in Self-acting Mules and Twiners.
I JAMES ROBERT WAIN of 23 Oxford Grove Oxford Road Manchester in the
County of Lancaster Mechanic do hereby declare the nature of this invention to be
as follows:-
This invention relates to selfacting mules and twiners employed for spinning and
doubling fibrous substances and consists principally in the application of an automatic
brake to one or both ends (or to the centre) of the tin roller which drives the
spindles.
On the tin roller shaft I mount loosely a brake drum and in connection therewith
I key upon the shaft a small boss provided with a projection which acts as a driver by
coming against a similar projection on the face of the drum.
Acting against the periphery of this drum is a curved brake attached to one end of
a lever mounted on the carriage frame.
The other end of this lever is provided with a bowl which as the carriage completes
its stretch" runs onto an incline attached to the headstock which raises up the
lever and applies the brake, thus assisting the "backing-off-friction" to stop the tin
rollers, spindles, and cops, and taking the strain off the "backing-off-friction," rim
shaft, rim band, and tin rollers, thereby making them more durable, allowing the
mule or twiner to be driven at a higher speed, and thus increasing the production of
yarn.
It will be observed that when the "backing-off" motion comes into action the
"driver" above named runs away from the projection on the brake drum and thus
the tin rollers can turn backwards for about three quarters of a revolution without
any action of the brake, which is sufficient for ordinary purposes, but in cases where
the tin rollers are required to turn backwards for a revolution more to back-off the
coils, from the points of the spindles previously to winding-on, I connect the brake
lever or its bowl to the faller shaft in such a manner that when the "backing-off" is
taking place the descent of the faller wire will cause the brake to be released.
T
1
1000
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Self-acting Mules and Twiners.
1 JAMES ROBERT WAIN of 23 Oxford Grove, Oxford Road Manchester in the
County of Lancaster Mechanic 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 relates to self acting mules and twiners employed for spinning and
doubling fibrous substances and consists principally in the application of an automatic
brake to one or both ends (or to the centre of each half) of the tin roller which
drives the spindles.
The nature of my said invention and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference to
the sheet of drawings hereunto annexed and the following explanation thereof.
Fig. 1. is an elevation showing so much of a self acting mule as is necessary to
illustrate my invention, a being part of the frame, b the spindle carriage and c the
tin roller shaft.

page_text: On the tin roller shaft or arbor c I mount loosely a brake drum d (shewn enlarged
at Fig. 2) and in connection with this drum I key upon the shaft a small boss e
provided with a projection e¹ which acts as a driver by coming against a similar
projection d' on the face of the drum d.
In order to strengthen these two projections and to prevent the liability to their
being broken off I prefer. to make both the boss and the drum with an outer rim f
as shown on the detached sectional views 3 and 4 (Fig. 4 being taken through about
the line A. B in Fig. 3). I prefer also to mount the drum d on a prolongation of the
boss e as shown at Fig. 3 and to keep it in place by means of a spring washer fand
which by creating friction between the two surfaces stops the lugs from
coming into contact too quickly and also prevents "backlash."
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Acting against the periphery of the drum d is a curved brake h (see Fig. 1)
attached to or formed at, one end of a lever mounted on a fulcrum i on the carriage
frame b.
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The other end of this lever h¹ is provided with a bowl k which as the carriage b
completes its "stretch" runs onto an incline m attached to the frame a which raises up
the lever and applies the "brake" thus assisting the "backing-off-friction
stop the tin rollers, spindles and cops, and taking the strain off the "backing-off
friction," rim shaft, rim band, and tin rollers, thereby making them more durable,
allowing the mule or twiner to be driven at a higher speed, and thus increasing the
production of yarn.
It will be observed that when the "backing-off" motion comes into action the
driver e above named runs away from the projection d' on the brake drum d and
thus the tin rollers can turn backwards for about three quarters or seven eighths of
a revolution without any action of the brake, which is sufficient for ordinary purposes,
but in cases where the tin rollers are required to turn backwards for a revolution
more, to "back-off" the coils from the points of the spindles previously to
winding-on," I connect the brake lever ' to the
"
faller-shaft n preferably in the
"
following manner.
Instead of mounting the bowl k direct on the lever I mount it on a short
lever which is pivotted to the lever ', and 1 connect the end of the lever /² by
means of a rod o to a short lever p fixed on the faller shaft n in such a manner that
when the "backing-off" is taking place the descent of the faller wire will cause the
brake to be released.
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 :-
==
The construction and application to the tin roller shaft or arbor of self-acting
mules and twiners, of a self-acting brake substantially in the manner and for the
purposes hereinbefore set forth and illustrated by the drawings annexed.
Dated this 19th day of February 1890.
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicant.