Improvements in Cross-winding-machines for Yarns and Threads.
Year: 1899

page_text: Date of Application, 22nd Aug., 1899-Accepted, 7th Oct., 1899
COMPLETE SPECIFICATION.
Improvements in Cross-winding-machines for Yarns and Threads.
I, AUGUST MÜLLERS, of No. 109, Regentenstrasse, München-Gladbach, Rhenish-
Prussia, Manufacturer, 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:―
My invention relates to improvements in cross-winding-machines for
yarns and
threads, and particularly doubling machines in which the thread or threads
running off from one or more cops and guided through a revolving slotted drum,
are wound on to a bobbin. The object of the hereinafter described improvements of
my invention is, to provide means, in machines of the said kind, for automatically
stopping the revolving motion of the receiving bobbin, as soon as one or more
of the threads being wound on breaks, and also to automatically stop the revolving
motion of the slotted drum.
I am aware that in machines for winding yarns and threads, means are known
and have been used before to stop the revolving motion of the bobbin if a thread
or threads should break. In machines of this kind the drum imparting frictional
motion to the bobbin continues to revolve, when the bobbin has been stopped.
In winding machines guiding the thread by a slotted drum, which, while guiding,
also serves to turn the bobbin by frictional contact, the drum itself must be
stopped when a thread or threads break. By stopping the drum alone, the
bobbin would, before the said drum actually comes to rest, continue its motion
for some time and would wind on a quantity of thread which must afterwards be
removed and thrown away as waste, causing a considerable loss. To automatically
stop the drum alone in winding machines, is equally known, but objectionable,
as stated before. The improvements of my invention, therefore, are designed to
automatically and simultaneously stop the bobbin and also the slotted drum, when
a thread breaks, thereby avoiding the loss of thread and enabling the attendant
to conveniently thread the broken yarn into the slot of the drum before starting
it again.
and
In winding machines of the kind hitherto employed, the breaking of a thread
always causes a considerable loss of yarn and also a great loss of time, accordingly,
to avoid such losses, the machine is adjusted to run at a comparatively low speed,
to prevent the breaking of threads. Owing to the improvements of my invention,
the breaking of a thread or threads is no more accompanied by a loss of yarn,
accordingly, no particular caution need be had to avoid such breaking. The
machine, accordingly, may run full speed and its output is materially increased.
To make my invention fully understood, I will describe the same with reference
to the accompanying drawings, in which Figure 1 is a sectional side elevation
of a winding machine provided with the improvements of my invention. The
bobbin receiving the thread is snown in the working position, in contact with the .
slotted drum.

page_text: Figure 2 shows part of the same mechanism, with the bobbin lifted off the
slotted drum.
Figures 3, 4 and 5 are diagramatical views of modifications of this invention,
based on the same principle.
Referring to Figure 1, is the bobbin on which the thread or threads running
off the cop or cops a, is wound. The said bobbin S, in this form of construction,
is arranged to bear against the lower side of the slotted drum I, while, in most of
the winding machines hitherto employed, the bobbin is arranged to rest by its own
weight, or the weight of its supporting frame, on the upper side of the drum.
The position shown in Figure 1, is preferably, not only because the thread or
threads may be directly threaded into the slots of the drum I, but also because the
point, where the thread used to break, that is, above the drum, is placed at such
height to allow of ready access and convenient re-fastening of the broken threads,
with the least possible loss of time.
The mechanism entering into operation by the breaking of a thread or threads,
may be of any known construction; I prefer to employ the device represented in
the drawings, consisting of a revolving shaft A, transmitting motion to a shaft B,
having projecting wings, which strike against a pin or suitable resistance c, as soon
as such pin c is placed in the path of rotation of said wing. The thread, passing
down from the cop, a, through an eye of the lever C, by its normal tension forces
the said lever down into the position shown. But when the thread breaks, the
tension is released and the lever tilts so as to place the pin c in the path of the
wings of shaft B. The said lever C is carried by a frame E, pivotted as at e, and
counterbalanced by a weight d; the said frame carries the guide roller 1 and by
its proper weight keeps its normal position as shown. When the wings of shaft B
strike against the pin c, the said frame E, is tilted back into the position indicated
by dotted lines. The said frame E, is connected by a rod F to a lever G, which, as
indicated by dotted lines, actuates another elbow-lever g, the free end of which,
being hook-shaped, acts to support the free end of a rod h connected to a frame H,
which, being arranged to swing freely on a shaft h¹ carries the journals of the
slotted drum I. It will be seen, that, if a thread breaks, the frame Ĕ, will be tilted
into the position indicated by dotted lines; the connecting-rod F', accordingly, will
pull the lever G, into the position indicated in dotted lines and the lever will be
so turned as to release the rod h, and, in consequence, the drum I, carried by its
swinging frame H, will, by its own gravity, fall against the brake K, which
stops its rotary motion while the driving belt, transmitting motion from the
shaft A, to the shaft of said drum I, becomes slack and ceases to turn the
drum.
It will be clear, then, that when a thread running from the cop a, down to
the bobbin S, breaks, the drum I will be automatically stopped. But the rotary
motion of said drum will not instantaneously cease. If the bobbin S continued
to bear against the surface of said drum I, it would continue to turn until the
complete stopping of the drum. The bobbin, accordingly, would still wind on
a quantity of the threads not broken, while one of the threads is wanting. The
said waste quantity must, afterwards, be removed and thrown away as waste. It
is essential, therefore, that the bobbin should be thrown out of contact with the
drum, before the latter completely stops. To obtain this purpose, a connecting-
rod L, is pivoted to the frame. H, of the drum I.' The other end
of said rod L, engages a lever M, pivoted as at m, and the said lever M, is
connected to a sliding bar N, which, when the lever M is forced into the
position indicated by dotted lines in Figure 1, is thrown forward between the
thread-guiding platen and the circumference of the bobbin S, thereby lifting the
said bobbin off the circumference of the drum and simultaneously stopping, by
its frictional contact, the rotary motion of said bobbin. The bobbin S, is carried
by a frame 0, arranged to swing on a shaft o, and counterbalanced by a weight o¹,
which tends to force the said bobbin against the circumference of the drum I.
The said weight o' might be replaced by a spring. The said frame O may be

page_text: directly connected to the rod F, which, on being drawn up by the tilting fránie E,
as described, will tilt the frame O, as indicated by dotted lines in Figure 5,
thereby removing the bobbin S from the drum I and forcing it against a brake K',
to stop its rotary motion. The levers L and M. and the sliding bar N may, in this
case be omitted.
Instead of causing the drum I to fall against its brake K, by its own gravity,
when the supporting hook g is released, it might equally well be caused to move
against the brake by the traction of a weight ġ and cord or chain guided over
pulleys, as indicated in Figure 3.
Or the drum I may be arranged to turn in stationary bearings instead of in a
swinging frame; in such case, the brake K is arranged to be forced against the
circumference of the drum, by means of the connecting rod F, and suitable
levers Gy which, as the rod I, is drawn up by the tilting frame E are thrown
into the position indicated by dotted lines in Figure 4, to force the brake K up
against the drum. The bobbin S, in this case, may be arranged at the upper side
of the drum, as hitherto practised and the sliding bar N to lift the bobbin from
the drum and to brake the same by frictional contact, is shifted by means of levers
such as r s actuated by the connecting rod F. Or, instead of employing a sliding
bar N, actuated by the said rod F the lifting off of the bobbin S, and the braking
of the same might be performed by the thread-guide n, which in this case, is
arranged to slide, as fully described in the Specification of my previous Patent
No. 4568 of 1897.
In all the modifications described, the breaking of a thread or threads will
cause the druni to be stopped and the bobbin simultaneously to be lifted off the
drum and immediately stopped by a frictional contact, both stopping and braking
operations being automatically derived from mechanism set in operation by the
breakage of a thread.
When the ends of the broken thread or threads have been reunited, the drum I
need only to be returned into its normal working position, Figures 1, 3 and 5
by drawing it forth from the braking surface K. Along with the drum I, the
levers L and M and sliding bar N, as also the frame H and rod are returned
into their normal positions, and the frame E, and rod F together with the
levers G and y return by their own gravity into the working position, as the
pin c is no longer in the way, of the rotary wings of shaft. B after the thread has
been re-fastened and the normal tension restored. It will be seen, then, that a
single turn of the hand will be sufficient to re-adjust all parts of the machine into
the working position.
Instead of deriving the forward and backward sliding motion of the lifting
and braking bar N, from the frame H which carries the drum I as before
described, the said motion might equally well be derived by any suitable con-
nection from the tilting frame E, particularly, if the drum I is turning in
stationary bearings. One modification of this kind is illustrated in Figure 4 as
before described, other modifications could be easily devised.
To lock the frame 0, which carries the bobbin S, in its position of rest, a hand-
lever P, has been provided, carrying a hook p or other suitable means to lock it.
By means of a cord or chain secured to the frame H, and guided over a suitable
roller u, the said lever P may be so connected to the drum I, that, by returning
the said drum into its working position, the lever P, will be automatically un-
locked. The frame 0, to which a fresh bobbin has been mounted when a full
one had been removed, is returned into its working position by the same manoeuvre
of the hand, which returns the drum into its working position.
Instead of forcing the drum against a braking surface, or a suitable, brake
against the drum, as before described, the purpose in view might further be
obtained, by shifting, through the medium of the tilting frame E or other device
actuated by the braking of a thread, the tension-roller of the driving band or
cord which transmits motion to the drum. The said belt or cord losing its
tension, will cease to rotate the drum and the latter will be stopped by and by.

page_text: The saving of time obtained through the improvements before described,
are the more conspicuous, as, in a winding machine of the kind, 20 or even
more drums are dependent on the service of a single attendant.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. In a cross-winding machine for winding yarns and threads by the aid of a
slotted drum or drums, the combination, with mechanism actuated by the breaking
of a thread or threads, of means for automatically stopping the slotted drum and
for interrupting the frictional contact between the drum and the bobbin and
braking the bobbin, substantially as and for the purpose described.
2. In a cross-winding machine for winding yarns and threads by the aid of a
slotted drum or drums, the combination, with mechanism actuated by the breaking
of a thread or threads, of means for automatically withdrawing the support to
the swinging frame of the slotted drum, thereby forcing the same into contact
with a brake, and of means for simultaneously stopping the bobbin, substantially
as and for the purpose described.
3. In a cross-winding machine for winding yarns and threads by the aid of
a slotted drum or drums, the combination, with mechanism actuated by the
breaking of a thread or threads, of means for applying a brake against the slotted
drum, and means for simultaneously stopping the bobbin, substantially as and for
the purpose described.
4. In a cross-winding machine for winding yarns and threads by the aid of
a slotted drum or drums, the combination, with mechanism actuated by the
breaking of a thread or threads, of means for stopping the slotted drum by shifting
the same out of its working position against a brake, and of means for stopping
the bobbin, said means consisting of a sliding bar actuated by the shifting of the
drum, substantially as and for the purpose described.
5. In a cross-winding machine for winding yarns and threads by the aid of a
slotted drum or drums, the combination, with mechanism actuated by the breaking
of a thread or threads, of means for stopping the slotted drum, and means for
simultaneously stopping the bobbin by lifting the same out of contact with the
drum and forcing it against a brake, substantially as and for the purpose
described.
6. In a cross-winding machine for winding yarns and threads by the aid of
a slotted drum or drums, the combination, with mechanism actuated by a breaking
thread or threads, of means for stopping the slotted drum and for simultaneously
stopping the bobbin by the thread-guide (n), substantially as and for the purpose
described.
7. In a machine for cross-winding yarns and threads by the aid of a slotted
drum or drums, the combination, with mechanism actuated by the breaking of
a thread or threads, of a swinging frame holding the slotted drum and a swinging
frame holding the bobbin, the latter frame being provided with a locking device
so connected to the swinging frame of the drum, that by returning the slotted
drum into its working position, the locking lever is simultaneously released,
substantially as and for the purpose described.
8. In a machine for cross-winding yarns and threads by the aid of a slotted
drum or drums, the combination, with mechanism actuated by the breaking of a
thread or threads, of means for slackening the tension of the belt, cord or chain
driving the drum, and of means for simultaneously stopping the bobbin, sub-
stantially as and for the purpose described.
Dated this 1st day of August 1
W. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.