and Twisting Machines.
Year: 1885

page_text: and Twisting Machines.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said Invention for AN IMPROVED
THREAD BREAKING ATTACHMENT FOR DOUBLING AND TWISTING MACHINES
a com-
munication to me from abroad by Fred Haggas, of the City, County and State
of New York, United States of America, Mill Superintendent, to be as follows:-
This invention consists of an automatic attachment for doubling and twisting
machines, arranged to sever the threads free from the rollers in case one thread
breaks, or the thread on one spool runs out, thus effectually preventing, in such
event, the remaining thread, (which will soon be broken by the action of the
rollers) or the previously broken thread from joining or tangling with the adjacent
threads in the machine and forming three or four ply yarn. The attachment also
in case of breakage of either thread or the running out of either spool, prevents
waste of yarn, and also the winding of the yarn around the rollers and journals of
the machine, which are serious difficulties now experienced. With this invention
strict attention to the machine is not required.
This automatic thread breaking attachment consists of a rocking lever pivoted in
rear of the rollers and having at its rear end, a yarn holding or breaking device, its
front end being so curved and of such a length as to reach over, and in front of the
upper roller and carrying a lateral arm or stem which is held in line with, or
preferably a little below the point of contact of the upper roller with the lower
roller so that the yarn as it issues from the rollers may pass over the stem or
lateral arm before it passes through the traveller to the spindle bobbin.
The yarn holder or breaker is formed by preference at its lower edge with
numerous retaining teeth by preference bent like the teeth of a saw, to receive and
hold the threads between the teeth in case of breakage of either thread so that the
rollers will cause the threads to be drawn apart or broken between the rollers and
he said yarn holder.

page_text: A counterbalance weight is attached adjustably upon the rear rocker arm the
weight being so adjusted that the yarn will hold the rocker arm in position with
the yarn breaker or holder elevated above the yarn. In case one or both of the
threads of yarn should break, or the yarn on one of the spools should run out, the
breaker will fall (being no longer held up by the pressure of the yarn on lateral
stem) and catch one or both strands of yarn in the teeth and retain the threads, so
that the action of the rollers will break or sever the thread or threads so held by
the teeth and thus entirely free the threads from the rollers.
In this manner there is no waste, no tangling of the thread and no winding of
the yarn about the rollers and the making of three or four ply yarn is effectually
prevented. The invention is applicable to all forms of doubling and twisting
machines.

page_text: head is attached to the extension a³ of the rocker arm a as shown clearly in
Figures 3 and 4, and it is formed by preference at its lower edge with numerous
retaining teeth 1 (by preference bent like the teeth of a saw, as shown in Figure 3)
to receive and hold the threads v between the teeth in case of breakage of either
thread, so that the rollers C C₁ will cause the threads to be drawn apart, or broken
between the rollers and the said retaining head 61. The counter balance weight d
is made to fit on the side of the extension a² of the rocker arm a, and is attached
by a set screw d¹ and the weight is made adjustable upon the arm by means of a
slot d² made in the weight, through which the set screw d¹ passes. In use, the
yarn will be passed between the rollers C C¹, over the lateral arm e, and then
through the traveller », and attached to the spindle bobbin 8 in the ordinary way,
then the weight d will be properly adjusted upon the extension a². Thus arranged
the yarn will hold the rocker arm a in the position shown in Figure 1. with the
head belevated above the yarn. In case one, or both, of the threads of yarn
should break, or the yarn on one of the spools B should run out, the head b will
fall (being no longer held by yarn on stem e) and catch one, or both strands of
yarn in the teeth b¹, and retain the threads back of the rollers C C¹ so that the
action of the rollers will break, or sever the thread or threads so held by the teeth,
and thus entirely free the threads from the rollers. In this manner there is no
waste, no tangling of the thread, and no winding of the yarn about the rollers, and
the making of three or four ply yarn is effectually prevented The Invention is
applicable to all forms of doubling and twisting machines.
Having now particularly described, and ascertained the nature of the said
Invention and in what manner the same is to be performed I declare that what
I claim is
1st The combination with the rollers of a doubling and twisting machine, of a
pivoted arm provided with a yarn holding, or retaining head at one end, and a
lateral arm at the other end, over which latter the yarn from the rollers passes,
for elevating the yarn holding, or retaining head, substantially as, and for the
purposes, set forth.
2nd The arm a provided with head b and lateral projection e pivoted to the
arm w and provided with the weight & substantially as described.
3rd The head 6 formed with numerous teeth b' and attached to the pivoted and
weighted rocking arm a substantially as and for the purposes set forth.
5.
A. M. CLARK.
By A. M. & W Clark, Patent Agents,
53, Chancery Lane, London,