Doubling Yarns.
Year: 1887

page_text: Date of Application, 10th June, 1887
Complete Left, 10th Mar., 1888
Complete Accepted, 13th Apr., 1888
and Doubling Yarns.
We, EZRA SYKES and DAVID SYKES, of the firm of John Sykes and Sons of
Turnbridge Iron Works, Huddersfield, Yorkshire, Machine Makers, do hereby
declare the nature of this invention to be as follows:-
The object of our invention is to provide self-acting mechanism for the purpose of
stopping the machine when anyone of the threads break, so as to prevent the
formation of "single" or other faulty yarn, and this we accomplish by stopping the
feed roller and bobbin whilst the spindle, driving band, and tin cylinder are rotating.
In carrying out our invention we arrange that the upper feed rollers are carried by
a horizontal frame capable of oscillating when the thread breaks for the purpose of
lifting the said roller out of contact with the bottom feed roller and stopping delivery
of the yarn thereby. The rear end of this oscillating frame is supported by another
frame placed at right angles thereto which is also capable of oscillating as hereinafter
explained. This latter oscillating frame carries eyelet pins placed vertically in the
said frame which pins are supported by the travelling threads, one of such pins being
supported by each thread, so that on any one of the threads breaking the wire drops
sufficiently low as to be caught by wings or arms projecting from a rotating shaft in
such manner that the pins are caught hold of by the said wings, and the vertical
frame caused to oscillate, and thrown or disengaged from the rear end of the
horizontal oscillating frame, allowing such end of frame to descend, causing the front
end to be raised, so as to lift the upper feed roller from contact with the bottom feed
roller, whereupon such upper feed roller travels towards the rear end of the horizontal
frame, the weight thereof ensuring the descent of the horizontal lever, and causing
a vertical rod attached thereto to disengage the bobbin driving mechanism, and
immediately stop the said bobbin from rotating, and this happens at the same time
that the feed rollers cease to deliver the yarn.
So far, the mechanism we have described only acts when the yarn breaks at a
position behind the feed rollers, but it is our intention to provide self-acting mechanism

page_text: for stopping the delivery of yarn when the said yarn breaks at the front of the
machine or at a point between the bobbin and the feed rollers. For this purpose the
yarn passes through an eyelet made in the end of à lever carried by the thread. The
said lever is suitably centred, and carries at its other end a vertical pin which passes.
through holes or apertures made in the vertical oscillating frame previously mentioned,
so that on the yarn breaking between the bobbin and the feed rollers the front end of
the lever just mentioned is freed, allowing it to ascend, when the pin at the end
thereof would descend and come into contact with the winged shaft, setting in motion
the mechanism already described for stopping delivery of the yarn.
In the practical working of the machine, it is found that whenever the machine is
stopped the threads continue to travel some little distance, in doing which there is
necessarily some slack of yarn between the delivery bobbins and the feed rollers,
such slackness of yarn allowing the eyelet wires to descend so that they would be
in contact with the winged shaft, in which case the machine could not proceed. To
prevent this we employ a stop rod, which can be employed to disengage the winged
shaft with a driving clutch, so as to prevent the wiper shaft from rotating; as soon,
however, as the machine is set in motion and taken up the slackness of the yarn, so as
to lift the eyelet pins beyond reach of the winged shaft the stop rod is operated so as
to engage the winged shaft with the driving clutch, allowing the said shaft to rotate
and be ready for the descent of any single pin when a thread breaks.

page_text: COMPLETE SPECIFICATION.
An Improved Stop Motion Applicable to Machinery for Twisting
and Doubling Yarns.
We, EZRA SYKES and DAVID SYKES, of the firm of John Sykes and Sons,
of Turnbridge Ironworks, Huddersfield, Yorkshire, Machine Makers, 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:-
The object of our invention is to provide self acting mechanism for the purpose of
stopping the delivery and winding on of yarn when any of the threads break, so as to
prevent the formation of "single" and other faulty yarn, and this we accomplish by
stopping the feed rollers and bobbin whilst the spindle, driving band, and tin cylinder
are rotating,
In carrying out our invention we arrange that the upper feed roller is carried by a
horizontal frame capable of oscillating when a thread breaks for the purpose of lifting
the said roller out of contact with the driven bottom feed roller and stopping delivery
of the yarn thereby. The rear end of this oscillating frame is supported by another
frame placed at right angles thereto, which is capable of oscillating as hereinafter
explained. This latter oscillating frame carries eyelet pins placed vertically in the
said frame, which pins are supported by the travelling threads, one of such pins being
supported by each thread, so that on any one of the threads breaking, the wire drops
sufficiently low to be caught by wings or arms projecting from a rotating shaft in
such manner that the pins are caught hold of by the said wings, and the vertical
frame caused to oscillate and be thrown or disengaged from the rear end of the
horizontal oscillating frame, allowing such end of frame to descend, causing the front
end to be raised so as to lift the upper feed roller from contact with the bottom feed
roller, the weighted end thereof ensuring the descent of the horizontal lever, and
causing a vertical rod attached thereto to disengage the bobbin driving mechanism,
and immediately stop the said bobbin from rotating, and this happens at the same
time that the feed rollers cease to deliver the yarn.
In order that our invention may be more fully understood, we herein make'
reference to the accompanying sheets of Drawings illustrative thereof, wherein Figs. 1
and 2 are cross sections of so much of a machine for twisting and doubling yarns as'
is necessary to shew the application of our improved stop motion thereto, Fig. 1
shewing the parts hereinafter specified in the positions they assume when the threads
are intact and are being wound onto the bobbin in the ordinary manner; and Fig. 2.
shewing the positions of the said parts when one or more of the threads have broken,
and the rotation of the bobbin and consequent winding of the yarn thereon stopped.
1 is the bottom stationary rail of the machine carrying the footstep 2 in which rests
the foot of the spindle 3. The top stationary rail shewn at 4 supports the said spindle,
which is driven by a cord from the tin cylinder 5, all of which parts are arranged in
the ordinary manner. For the purpose of driving the bobbin a, we form grooves or
recesses on the underside of the said bobbin, into which enter projections 6 formed or
cast on the upper side of the hollow friction cone 7. Onto the driving spindle 3 we
fix by pins or other means a cone pulley 8 which enters the interior of the friction
cone 7, the two surfaces being kept in contact, sufficient for the cone pulley 8 to drive

page_text: the cup, by the weight of the bobbin and the cone 7. It therefore follows, that when
the spindle is rotating, the friction between the surfaces of the pulley 8 and friction
cone 7 is sufficient to rotate the bobbin a at the same speed as the spindle. We will
now proceed to describe our improved stop motion, which is used in connection with
each spindle on the machine, for automatically stopping the delivery and winding on
of the yarn when one or more threads break at a position behind the feed rollers, for
the purpose of preventing the formation of "single" or other faulty yarn. 9 is a rail
extending the length of the machine, to which are bolted brackets 10, carrying the
horizontal frame 11 and drop wire frame 12, the former of which is pivotted and
capable of oscillation at 13 and the latter at 14. The front end of the frame 11
carries the top feed roller 15, which is driven by-frictional contact with the bottom
feed roller 16 in the usual manner, the opposite end of the said frame being weighted
at b for the purpose hereinafter specified. The rear end of the frame 11 is supported
by the vertical frame 12, the upper end of which is notched; as shewn in the
Drawings, and rests against corresponding notches in the frame 11. Drop wires or
eyelet pins 17 are placed vertically in the frame 12, one leg of each pin being bent
at c, as shewn clearly in Fig. 5 (which is sectional detail of the said frame) so that the
said pins can only rise or fall a distance equal to that between the division plates 18
and 19 in the frame 12. 20 is a shaft extending across the machine, driven by
pinion 21 through a train of gearing from the main driving shaft, such shaft carrying
the two rods or wings 22, placed parallel to the axis of the said shaft, such rods being
secured to the shaft by metal straps 23. The threads of yarn to be twisted or doubled
are fed from the bobbins 24 and conducted over small guide pulleys 25 under the
guide rod 26, over bar 27, through the eyelets 17, over the rod 28, between the feed
rollers 15 and 16, through the eyelet 29, and finally wound onto the bobbin a.
The mode of operation is as follows:-The eyelet pins being supported entirely by
the tension of the threads in the position shewn in Fig. 1, it follows that when one
of the threads breaks or runs out, the eyelet pin which it has been supporting
will immediately fall into the position shewn in dotted line in Figs. 2 and 5 or low
enough to be caught by one of the rods connected to the rotating shaft 20, the result
being that when the rod strikes the eyelet pin it oscillates the vertical frame 12 so
that the upper ends thereof are thrown out of the notches in the horizontal frame 11,
as shewn in Fig. 2, whereupon the rear end of the frame 11 descends (its descent
being ensured by the weighted end thereof) and consequently raises the front end of
the said frame, the result being that the top feed roller 15, which is supported thereon,
is lifted out of contact with the bottom feed roller, thereby breaking the nip and
stopping delivery of the yarn in that way. In addition to the top feed roller 15 being
raised out of contact with the bottom feed roller by the oscillation of the frame 11,
the descending movement of the rear end of the said frame is communicated by
rod 30 to the weighted end of the lever 31, which causes the opposite end thereof to
rise and lift the friction cone 7 out of contact with the driven friction pulley 8, at the
same time. forcing the flange 32 on the friction cone 7 against the brake strap 33,
whereby further rotation of the bobbin is prevented. The positions of the several
parts when operated as above described by the breaking of one of the threads, are
shewn fully in Fig. 2. In the accompanying Provisional Specification we therein
stated that the descent of the horizontal frame 11 was ensured by the top feed
roller 15 on the front end of said frame being raised, which caused the feed roller to
travel towards the rear end of the frame, but we find that this is unnecessary, as a
weight at the rear end of the frame is sufficient to ensure its descent.
So far, the mechanism we have described only acts when the yarn breaks at a
position behind the feed rollers, but it is our intention to provide self acting
mechanism for stopping the delivery of yarn when the said yarn breaks at the front
of the machine or at a point between the bobbin and the feed rollers.. For this
purpose the yarn passes through an eyelet made in the end of a lever carried by
the thread. The said lever is suitably centred, and carries at its other end a vertical
pin which passes through holes or apertures made in the vertical oscillating frame
previously mentioned, so that on the yarn breaking between the bobbin and the feed

page_text: rollers the front end of the lever just mentioned is freed, allowing it to ascend, when
the pin at the end thereof would descend and come into contact with the winged
shaft, setting in motion the mechanism already described for stopping delivery of
the yarn.
In order to carry out this part of our invention we hinge the eyelet 29 to one end
of a lever 35 pivotted at 36 to the bracket 37 bolted to the rail 9, the opposite or
weighted end of the said lever carrying a pin 38 which passes through an eyelet
formed by bending the pin 39, which is also carried in the vertical frame 12 as clearly
shewn in detail Fig. 4. When the yarn in unbroken the tension thereof upon the
eyelet is sufficient to balance or keep the lever 35 in the position shewn in full line in
Fig. 4, the pin 39, which is employed in addition to pins 17 as seen in front view
Fig. 3, being then out of reach of the rods connected to the rotating shaft 20, but
when the yarn breaks at a position between the feed rollers and the bobbin the tension
thereof on the eyelet ceases, thereby allowing the weighted end of lever 35 to descend
and place the pin 37 in position to be caught by one of the rods connected to the
rotating shaft 20, as shewn in dotted line in Fig. 4, the result being that the vertical
frame 12 is oscillated and thrown out of the notches in the horizontal frame 11,
thereby stopping the rotation of the bobbin a and raising the top feed roller 15 out of
contact with the bottom feed roller substantially in the same manner as previously
described.
In the practical working of this machine, it is found that whenever the machine is
stopped, the threads continue to travel some little distance, in doing which there is
necessarily some slack of yarn between the delivery bobbins and the feed rollers, such
slackness of yarn allowing the eyelet wires to descend, so that they would be in
contact with the winged shaft, in which case the machine could not proceed. In
order to prevent this, we employ a stop rod 40 (see Fig. 3) supported in brackets 41,
the bottom of the said rod 40 being inade with snecks corresponding with inclines
formed in the bottom of the bracket 41. The end 42 of the stop rod is bent or
may have a stud secured thereto, which enters a groove formed in the sliding
clutch 43 on the end of the shaft 20. When the stop rod 40 is moved in the
direction of the arrow, the projection 44 on the sliding clutch is placed out of reach
of the projection on the face of the pinion 21, whereby the shaft 20 is prevented
from rotating.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
Firstly. In machines for twisting and doubling yarn, the combination therewith of
the oscillating horizontal feed roller carrying frame 11, resting upon the oscillatory
drop wire carrying frame 12 operated in the manner substantially as described.
Secondly. In machines for twisting and doubling yarn, the application thereto of
mechanism to brake the bobbin in combination with the frame 11 and drop wire
frame 12, all arranged substantially as described, for the purpose of stopping the
rotation of the bobbin whilst the spindle, driving band, and tin cylinder are rotating.
Thirdly. In machines for twisting and doubling yarn, the combination with drop
wire frame 12 and feed roller carrying frame 11 of the balanced lever 35, one end of
which carries the pins 39, all employed for stopping the delivery and winding on of
the yarn on the breakage of a thread between the bobbins and feed rollers.
Dated this 9th day of March 1888
TASKER & CROSSLEY,
Halifax, Agents.