Improvements applicable to all kinds of Spinning Machines for Preventing Waste in case of Breakage of the Threads.
Year: 1891

page_text: Date of Application, 23rd May, 1891
Complete Specification Left, 23rd Feb., 1892-Accepted, 26th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements applicable to all kinds of Spinning Machines for
Preventing Waste in case of Breakage of the Threads.
We LOUISE CROES DAMMAN wife of Felix Damman, and JAN LAPIN Machine
Makers. both of Routers in the Kingdom of Belgium, do hereby declare the nature
of this invention to be as follows:-
The object of the present invention is to provide means of preventing waste in
case of the rupture of threads or yarns in spinning machines.
The invention consists essentially in means whereby the part of each thread or
yarn stretched between the stretching rollers and the winding spindle or cap is
made to normally support or hold back the lower arm of an appliance hereinafter
called the "thread shifter" by which appliance when the thread or yarn is broken
the ends are at once and automatically removed out of reach of the rollers so as
to prevent waste and facilitate re-joining. The appliance consists of a light
spindle or bar disposed adjacently to the rollers. which carries at its upper end a
second arm arranged to correspond with the part of the thread situated above the
rollers but which is normally kept away from the thread so long as the first or
lower arm is in contact with the stretched thread and carries it automatically and
laterally clear of the rollers when by the breakage of the thread the lower arm
(which was keeping it hitherto in equilibrium) thus loses its support.
The metal spindle or bar of the thread shifter carries at its top a transversely
disposed arm terminating at one end in a hook or fork and provided at the other
with a counterweight disposed obliquely both in regard to the spindle or bar and
the axis of its forked arm.
The lower end of the spindle or bar is screwed into a socket which carries a
second transverse arm terminating in a hook and the upper and lower arins are
arranged on the spindle on two different radii so as to form an angle between
them.
The socket is mounted on a coned pivot fixed to a beam running the whole
length of the frame parallel to and below the axes of the stretching rollers and
carrying a series of similar thread shifters equal in number to the threads in the
machine.
Each spindle or bar can turn freely on its pivot, its angular travel being limited
by two stops fixed to the beam on either side of the lower arm of the thread
shifter so long as there is no breakage of the thread the thread shifter is out of
action and held in equilibrium by the stretched thread engaging with the hook of
the lower arm, but when the thread breaks the equilibrium is destroyed and the
spindle is turned forward by the action of its counterweight, and the fork of the
upper arm seizes the thread above the rollers and shifts it out of reach of the latter,
thus preventing its getting between them so that they cannot roll it up uselessly
and cause the waste this invention is designed to prevent. The rollers are thus
always free and therefore not subject to the wear and tear and distortion which
usually occurs. The re-joining of the broken threads can then be effected easily
and simply without the necessary loss er waste in first drawing out the thread
rolled up on the rollers, which cannot be done without risk of injuring them.
The operator then returns the thread shifter against its back stop, re-adjusts the
threads, replaces the hook of the lower arm against the stretched thread which
then again maintains the thread shifter in equilibrium until the next accident.
To prevent the thread being rolled on the stretching rollers in cases where the
broken end sticks against the roller (as often happens owing to its being accidently
soaked with oil or water) a thin curved metal guard plate mounted on a lever is

page_text: provided and applied to the back or one of the stretching rollers, the lever is of
suitable shape and hinged in the beam which is perforated with a number of holes
for the purpose opposite each thread.
The apparatus is applicable to all kinds of spinning machines, whatsoever
their special object may be, and whether they work with wet or dry materials.
Dated this 23rd day of May 1891
J. C. CHAPMAN;
Agent.
COMPLETE SPECIFICATION.
Improvements applicable to all kinds of Spinning Machines for
Preventing Waste in case of Breakage of the Threads.
We, LOUISE CROES DAMMAN wife of Felix Damman, and JAN LAPIN, Machine
Makers, both of Roulers in the Kingdom of Belgium, do hereby declare the
nature of this invention to be particularly described and ascertained in and by the
following statement:-
-
The object of the present invention is to provide means of preventing waste in
case of the rupture of threads or yarns in spinning machines.
The invention consists essentially in means whereby the part of each thread or
yarn stretched between the stretching rollers and the winding spindle or cap of
the machine is made to normally support or hold back the lower arm of an
appliance hereinafter called the "thread shifter," by which appliance when the
thread or yarn is broken the ends are at once and automatically removed out of
reach of the rollers so as to prevent waste and facilitate re-joining.
The appliance consists of a light spindle or bar disposed adjacently to the
rollers carrying the said lower arm and which carries at its upper end a second
arm arranged to correspond with the part of the thread situated above the rollers
but which is normally kept away from the thread so long as the first or lower arm
is in contact with the stretched thread, and carries it automatically and laterally
clear of the rollers when by the breakage of the thread the lower arm (which was
keeping it hitherto in equilibrium) thus looses its support.
We will now fully describe our invention with reference to the annexed drawings
in which
Figure is a vertical section of an apparatus showing the thread passing
between all the mechanisms operating it and the thread shifter in equilibrio ready
to act automatically in case of breakage.
Figure 2 is a front elevation of Figure 1.
Figure 3 is a plan illustrating by the axial lines the angular displacement of the
thread shifter and of the thread in case of breakage.
Figure 4 is a separate elevation of the thread shifter; Figure 5 is a plan of same
showing positions of equilibrium and displacement.
Figure 6 is a front elevation of a guard plate intended to prevent the rolling up
of each end of the broken thread upon the rollers or their spindles, and Figure 7
is a side elevation of same.
The same reference letters designate the same parts in all of the figures.
F is the metal spindle or bar of the thread shifter and it carries at its top the
transversly disposed arm a terminating at one end in a hook or fork and
provided at the other with a counterweight disposed obliquely at suitable angles
both in regard to the spindle or bar F and the axis of its forked arm g in such
manner that when the said weight is moved from one extreme position to the
other, it will rotate the spindle F with it.
The lower end of the spindle or bar F is fixed in a socket m, and n is the second
transverse arm terminating in the hook o, and the upper and lower arms g and
are arranged on the spindle F on two different radii so as to form an angle
between them.

page_text: The socket in is mounted on a coned pivot p fixed to a beam W which runs the
whole length of the machine parallel to and below the axes of the stretching
rollers R. R and which carries a series of similar thread shifters equal in number
to the threads on the machine.
Each such spindle or bar F can turn freely on its pivot, its angular travel being
limited by two stops i. fixed to the beam W on either side of the lower arm
of the thread shifter; so long as there is no breakage of the threads each thread
shifter is out of action and held in equilibrium (against the force of gravity of
the counterweight & acting upon it) by the stretched thread engaging with the
hook o of the lower arm; but when any thread breaks the equilibrium of its
shifter is destroyed and then the spindle F is turned forward upon its pivot by
the action of its counterweight k, and the lower arm a moves from the position 2
to 2, Figure 5, and comes against the stop it; the fork of the upper arm g
following the movement moves from the positions 1 to 1', Figure 5, and seizes the
thread above the rollers J. and shifts it out of reach of the latter, thus
preventing its getting between them so that they cannot roll it up uselessly an
cause the waste this invention is designed to prevent. The rollers are thus always
free and therefor not subject to the wear and tear and distortion which usually
occur without a thread shifter.
The re-joining of the broken threads can then be effected casily and simply
without the necessary loss or waste in first drawing out the thread rolled up on the
rollers as is usually the case, and which cannot be done without risk of injuring
them.
The operator then returns the thread shifter against its back stop i, readjusts
the threads, replaces the hook o of the lower arm against the stretched thread
which then again maintains the thread shifter in equilibrium (and against the
action of the counterweight ) until the next accident.
To prevent the thread being rolled on the stretching rollers or their spindles in
cases where the broken end sticks against the roller R¹ (as often happens owing to
its being accidently soaked with oil or water) a thin curved metal guard plate..
Figures 1, 6, 7, mounted on a lever is provided and applied to the back of one of
the stretching rollers, or its spindle. say R': the lever is of suitable shape such as
is illustrated and hinged in the beam W which is perforated with a number of
holes for the purpose opposite each thread.
The apparatus is applicable to all kinds of spinning machines, whatsoever their
special object may be, and whether they work with wet or dry materials.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, we declare that what we
claim is:
1. An apparatus such as above described applicable to all kinds of spinning
machines whereby in case of breakage of the threads the broken ends are at once
and automatically removed out of reach of the moving mechanisms to prevent
waste and facilitate rejoining substantially as set forth.
2. In a spinning machine utilising the stretched thread above the winding spindle
or cap of the machine to normally hold back a part of an appliance hereinabove
called a "thread shifter" and render same unoperative until required substantially
In the manner and for the purpose set forth.
3. The construction and adaption hereinabove described and illustrated of thread
hifters for spinning machines substantially as and for the purposes set forth.
Dated this 23rd day of February 1892.