Improvements in Machinery for Winding, Doubling, and Twisting Yarns or Threads.
Year: 1890

page_text: Date of Application, 3rd Sep'., 1890
Complete Specification Left, 1st June, 1.91-Accepted, 4th July. 1891
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Winding, Doubling, and Twisting
Yarns or Threads.
I, JOSEPH FARRAR, of Globe Works, Halifax, in the County of York, Machine
Maker, do hereby declare the nature of this invention to be as follows:-
This invention is designed for the purpose of automatically stopping a spindle or
bobbin, slackening the driving band or tape, and applying a brake to the spindle
or bobbin for the purpose of stopping its rotation, when any of the threads break or
are otherwise absent, either in front of the feed rollers or at the rear of the machine,
also for raising the top feed roller so as to stop delivery of the yarn, the said four
movements or fimctions being simultaneously performed. The mechanism I employ
for accomplishing these objects consists in the use of a peculiarly shaped lever
occupying a vertical position and capable of rocking on its fulcrum. Its lower end
carries a wharle or guide pulley capable of revolving on a vertical pivot. The
driving band passes from the ordinary driving cylinder around the wharle on the
spindle, thence round the guide pulley and back again to a second wharle on
the spindle, by which arrangement a single driving band passes around two wharles
or a double wharle, consequently the driving of the spindle is made positive without
any slipping of the driving band, therefore when a thread breaks or is absent, at
the rear of the machine, the detector mechanism hereinafter explained rocks the
vertical lever, throwing the guide pulley nearer to the spindle in such a way as to
slacken the band and simultaneously therewith the foot of the vertical fever is
forced against a suitably shaped brake lever, causing the opposite end thereof to clip
the spindle or spindle wharle, so as to brake it and stop further rotation. Detector
wires of any well known form are used and supported by the yarn, as is common in
this class of machinery, such detector wires being carried by a tilting holder of
suitable form supported on the upper end of the vertical lever, so that when the
thread is absent, a detector drops, and the lower end thereof comes into contact
with a continuously revolving cam or wiper shaft which forces the detector holder
off the sneck or bar which supports it, thereby allowing the vertical lever to move
or rock on its fulcrum so as to place the guide pulley nearer the spindle and slacken
he band, and at the same time apply the brake as already described.
In order to slacken the driving band, and apply the brake to the spindle when
he yarn breaks, or slackens, between the spindle and feeding rollers at the front
f the machine, I employ an ordinary form of trap lever having an eyelet at one
nd, through which the yarn passes; the opposite end of the said trap lever
xtending to the rear of the machine and lying under the detector holder. This
rap lever works on a swinging fulerum, attached to the upper end of the vertical
ever by a connecting link to the detector holder, so that when a thread breaks or
absent, the front end of the trap lever falls, causing the opposite end to rise and
ome within reach of the rotating wiper shaft, which forces the trap lever forward,
using the connecting link to draw the detector holder off the bar, allowing the
arts to descend, the action being similar to that which takes place when a detector
ire falls, where the driving band is slackened and the brake applied. As the trap
ver and the detector holder are connected together by a rod, they gravitate
wards the sneck or holding bar so that when readjusting the parts after stoppage
e detector holder self actingly returns to the sneck.
The apparatus described above is equally applicable to cap twisting frames; the
ly difference is, that instead of using an ordinary form of guide pulley at the
ttom of the vertical lever, a roller form of pulley will be necessary, the flanges
such pulley being as wide apart as the "lift" of the bobbin,

page_text: By the arrangement and construction of mechanism above described, the further
rotation of the spindle is now effectively stoppel, whilst the parts are reliable in all
their movements and not easily damaged or made unworkable.
Dated this 2nd day of Sentember 1890.
TASKER & CROS EY,
Halifax, Agents.
COMPLETE
SPECIFICATION.
Improvements in Machinery for Winding. Doubling, and Twisting
Yarns or Threads.
1. JOSEPH FARRAR, of Globe Works, Halifax, in the County of York, Machine
Maker, 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 is designed for the purpose of automatically slackening the driving
band or tape, and applying a brake to the spindle or bobbin for the purpose of
stopping its rotation, when any of the thread- break or are otherwise absint, either
in front of the fed rollers or at the rear of the machine, also for raising the top
feed roller so as to s'op delivery of the yarn, the said four movements or functions
being simultaneously performed. The un chanism I employ for accomplishing these
objects consists in the use of a peculiarly shaped lover, occupying a vertical position,
and capable of rocking on its inferum, and kept in position by a tilting rest or
block pivotted at the upper end of the said lever. The lower end of the said lever
carries a wharle or guide pulley capable of revolving on a vertical pivot. The
driving band passes from the ordinary driving cylinder around the wharle on the
spindle, thence round the guide pulley and beek again to a second wharle on
the spindle, by which arrangement a single driving band passes around two wharles,
or a double wlarke, consequently the driving of the spindle is made positive without
any slipping of the driving band, therefore when a thread breaks or is absent, at
the rear of the machine, the detector mechanisma hereinafter explained operates the
tilting black, and allows the vertical lever to rock and move the guide pulley
nearer to the spindle, in such a way as to slacken the band, and simultaneously
therewith the foot of the vertical lever is forced against a suitably shaped brake
lover, causing the opposite end thereof to clip the spindle or spindle wharle, so as
to brake it and stop further rotation. Detector wires of any well known form are
used and supported by the yarn, as is common in this class of machinery, such
detector wires being carried by a tilting block, so that when the thread is absent,
a detector drops, and the lower end thereof comes into contact with a con-
tinuously revolving cam or wiper shaft, which forces the tilting block off the sneck
or bar which supports it, thereby allowing the vertical lever to move or rock on its
fulcrum, so as to place the guide pulley nearer the spindle and slacken the band,
and at the same time apply the brake as already described.
In order to slacken the driving band and apply the brake to the spindle, when
the yarn breaks or slackens between the spindle and feeding rollers at the front of
the machine, I employ an ordinary form of trap lever, having an eyelet at one end,
through which the yarn passes; the opposite end of the said trap lever extending
to the rear of the machine, and lying under the tilting block. This trap lever
works on a swinging fulerum, connected by a link to the tilting block, and is so
arranged that when the twisted thread breaks or is absent, the front end of the
trap lever rises, causing the opposite end to come within reach of the rotating wiper
shaft, which forces the trap lever forward upon, its swinging fulcrum, cansing the
connecting link to draw the tilting block off the resting bar, allowing the parts to
descend, the action being similar to that which takes place when a detector wire
falls, and where the driving band is slackened and the brake applied. As the
swinging fulcrum and the tilting block are connected together by a link, they

page_text: gravitate towards the sueck or holding bar, so that when readjusting the parts after
stoppage, the tilting block self actingly returns to the resting bar.
Such being the nature and object of my said invention, I will now, in order that
the same may be better understood, make reference to the accompanying sheets of
drawings illustrative thereof, wherein Fig. 1 is cross section of a twisting frame
having my improvements applied thereto, the drawing shewing the various parts of
the mechanism in the positions they occupy when the machine is at work; and
Fig. 2 is a drawing corresponding to Fig. 1, but shewing the position occupied by
my improved mechanism when a thread is broken. Figs. 3 and 4 are enlarged
details of some of the parts.
A represents the framework of the machine, B and C the front stationary cross
rails employed to connect the frame ends together and also for supporting the
spindles D. The rollers for feeding the yarn to the spindles are shewn at E and F,
the latter being supported and carried on the upper end of the vertical lever G,
capable of working upon a pivot or fulcrum a. The spindles Dare provided with
two wharles b and c, cast together or separately, and they are driven by the driving
band H from the ordinary tin cylinder I, but the driving band. in addition to
passing around the two wharles on the spindle, also passes around a wharle .J
working in a socket at the foot of the vertical lever G, as clearly shewn in Figs. 1, 2,
and 4.
K represents a brake pivoted at , and it is forced against the wharle cor
against the spindle D for the purpose of stopping it when required, by the lower
end of the vertical lever G. The detector wires are carried by the tilting block L,
which is pivoted eccentrically at to the upper end of the vertical lever G, and in its
normal condition gravitates towards and rests upon the stationary resting bar Mas
shewn in Fig. 1; but if a thread breaks or is absent from any cause, the detector
wire P, which was formerly supported by such absent thread, descends as shewn in
dotted lines at Fig. 1, whereby the revolving wiper shaft N strikes the foot of the
detector, causing the tilting block L to slightly rock so as to force the sneck thereon
off the holding bar M as seen in Fig. 2, whereby the top feeding roller E will be
raised out of contact with the lower roller, consequently the delivery of the yarn is
stopped, and simultaneously therewith the lower end of the vertical lever G will
approach towards the spindle D in order to slacken the driving band, which thereby
ceases to drive the said spindle, in addition to which, the foot of the lever G comes
into contact with the brake K, which is forced against the wharle c, or against the
spindle, whereby its rotation is stopped.
I would observe that the three functions just mentioned, of raising the top feed
roller, slackening the driving band, and applying the brake, are performed when
the yarn is absent or broken between the feed rollers and the supply bobbins, but
these three actions can take place if the yarn breaks or slackens between the feed
rollers and the spindle at the front of the machine; and for this purpose I employ
an ordinary form of trap lever O having an eyelet at the front end, through which
the yarn passes as shewn in the drawings, the opposite end of the said trap lever O
extending to the rear of the machine at 1' and lying under the tilting block Las
shewn on an enlarged scale in Fig. 3. This trap lever works or oscillates upon a
swinging fulcrum 9 connected by a link to the tilting block L, but both the said
trap lever and connecting link are attached by a ping to the swinging fulcrum or
link placed loosely on a pinj projecting from the vertical lever G so that when a
thread breaks or slackens in front of the machine and ceases to hold down the front
end of the trap lever O, it will rise through the weight of the opposite end, which
is set or regulated by the adjustable weight 1, causing the extended portion P of
the trap lever O to come within reach of the rotating wiper shaft N which forces
the trap lever forward upon its swinging fulcrumi, thereby causing the link h to
draw the tilting block off the holding bar M whereby the several parts drop
or descend as already explained, separating the feeding rollers, slackening the
driving band, and applying the brake for the purpose of stopping the spindle.
As the tilting block L is eccentrically attached to the lever G and connected by
link to the swinging fulcrum i, the said tilting block gravitates towards the

page_text: holding bar M, so that when readjusting the parts after stopping, the tilting block
self-actingly returns to the holding bar.
The apparatus described above is equally applicable to cap twisting frames; the
only difference is, that instead of using an ordinary form of guide pulley at the
bottom of the vertical lever, a roller form of pulley will be necessary, the flanges of
such pulley being as wide apart as the "lift" of the bobbin.
By the arrangement and construction of mechanism above described, the further
rotation of the spindle is most effectively stopped, whilst the parts are reliable in
all their movements, and not easily damaged or made unworkable.
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
Firstly. In machines for winding, doubling, and twisting yarns, the employment
of the vertical lover (i carrying a wharle I, which lever, when operated through
breakage, absence, or slackness of yarn, at either the back or front of the machine
as described, separates the feeding rollers and slackens the driving band.
Secondly. In machines for winding, doubling, and twisting yarns, the employ-
ment of vertical lever G carrying a wharle J, which lever, when operated through
breakage, absence, or slackness of yarn either at the back or front of the machine, as
described, separates the feeding rollers, slackens the driving band, and applies the
brake.
Thirdly. In machines for winding, doubling, and twisting yarns, the coupling
together of the tilting block L and the trap lever () by a swinging fuleruni and
connecting link in the manner shewn and for purposes described.
Fourthly. In machines for winding, doubling, and twisting yarns, the use of two
wharles or a double wharle on the spindle for receiving an endless driving band,
employed in combination with a pulley capable of approaching the spindle for
slackening the driving band, operated in the manner substantially as described.
Dated this 29th day of May 1891.
TASKER & CROSSLEY,
Halifax, Agents.