Improvements in Selfacting Mechanism for Stopping Rollers or Spindles of Spinning, Doubling, Twisting, Winding, and similar Machines on the Breakage of a Thread or Threads.
Year: 1887

page_text: Date of Application, 9th Aug., 1887
Complete Left, 9th May, 1888
Complete Accepted, 15th June, 1888
Improvements in Selfacting Mechanism for Stopping Rollers or
Spindles of Spinning, Doubling, Twisting, Winding, and similar
Machines on the Breakage of a Thread or Threads.
I GEORGE HENRY HOLDEN of Grosvenor Buildings, Carr Street, Manchester in the
County of Lancaster, Engineer do hereby declare the nature of this invention to be as
follows:-
My invention relates to selfacting mechanism for spinning, doubling twisting,
winding and similar machines for stopping the rollers or spindles of said machines
selfactingly when one or more threads break, and is more particularly applicable to
worsted doubling or spinning frames in which the thread or threads are passed round
a roller on a vertical spindle, which roller delivers them to the twisting spindle or
flyer. As arranged in existing machines, the rollers are mounted loosely upon vertical
spindles rotated by gearing or otherwise, and are taken round by friction by plates or
discs on the spindles upon which plates or discs the rollers rest. A stop motion arrests
the spindles or disc when a thread breaks, but the inertia of the roller causes it to
continue its revolution for some distance after this, and when the spindle or disc is
started again, the inertia of the roller prevents its starting to rotate at once, in con-
sequence of which the yarn obtains an irregular twist for a shorter or longer length.
This fault is obviated by my improved stop motion, which I arrange as follows: I
mount each roller loose upon a vertical spindle rotated by gearing or otherwise. Into
the lower end of the roller or its boss I turn a circular groove in which a catch or
pawl works on a pin, or otherwise attach said catch or pawl to the drum. Below the
drum I fix a ratchet wheel upon the spindle, and press one end of the catch or pawl
into the teeth of the ratchet wheel by a spring so that the drum is rotated with the
ratchet wheel by the catch or pawl. The latter is formed with a tail piece on the
opposite side of the pin, this tail projecting outwards from the circular groove so as to
form a curved incline and being turned up at the end to form a stop. I pass the thread
or the two threads from the roller through an eye or snarl on the end of a tumbler
lever so adjusted or weighted that if one thread breaks, the weight of the tumbler lever
also breaks the other thread, when that end of the tumbler lever drops, and its other

page_text: end or a pin fixed to it is lifted into the path of the projecting tail piece of the catch
or pawl and presses it inwards, thereby withdrawing its other end out of the teeth of
the ratchet, and the roller is stopped by the turned-up end of the tail of the catch or
pawl coming against the end of the tumbler lever or the pin fixed to it. The arrange-
ment of the tumbler lever as described is similar to that ordinarily used and forms in
itself no part of my invention, but only in connection with the ratchet and pawl for
driving the roller. When the threads have been pieced and the tumbler lever is lifted
again, it liberates the catch or pawl, which is at once pressed into the teeth of the
ratchet by the spring and the roller starts to rotate with the spindle immediately.
A similar stop motion may be applied to horizontal delivery or front rollers of
spinning or twisting frames. In this case I make the bosses of the front rollers separate
and loose upon a horizontal shaft and attach catches or pawls to them in a similar
manner as hereinbefore described with reference to vertical rollers. Beside each boss
I fix a ratchet upon the shaft and arrange tumbler levers to withdraw the catch from
the ratchet when a thread breaks in a similar manner as hereinbefore described.
Instead of the tumbler lever being held up by the threads, it may be held up by a
vibrating or sliding catch connected to detector mechanism of any suitable ordinary
or known kind and the threads be passed separately through detector wires arranged
so that when one thread breaks and the corresponding wire drops, a vibrating finger
or rotating spider catches the wire and thereby moves the vibrating or sliding catch
so as to liberate the tumbler lever. In some cases I use a sliding bar instead of a
tumbler lever, having a projection which comes into the path of the incline on the
catch or pawl when the sliding bar drops or is moved by detector mechanism when one
of the threads breaks.
I use a similar arrangement of ratchet and pawl in some cases for driving and
stopping spindles. The ratchet is in that case connected to a wharve or pulley loose
on the spindle and driven by a band, or to a wheel loose on the spindle and driven by
gearing, and the catch or pawl is attached to a disc or boss fixed upon the spindle and
is withdrawn from the ratchet teeth by a tumbler lever or sliding bar dropping into
the path of the curved tail piece of the catch or pawl, or being moved into it by
detector mechanism, when one of the threads breaks.
Dated the 8th day of Avon 1007

page_text: Improvements in Selfacting Mechanism for Stopping Rollers or
Spindles of Spinning, Doubling, Twisting, Winding, and similar
Machines on the Breakage of a Thread or Threads.
.I GEORGE HENRY HOLDEN of Grosvenor Buildings Carr Street, Manchester in the
County of Lancaster, Engineer 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 selfacting mechanism for spinning doubling twisting winding
and similar machines for stopping the rollers or spindles of said machines selfactingly
when one or more threads break and is more particularly applicable to worsted doubling
or spinning frames in which the thread or threads are passed round a roller or drum
on a vertical spindle which roller or drum delivers them to the twisting spindle or cap.
As arranged in existing machines, these rollers are mounted loosely upon vertical
spindles rotated by gearing or otherwise, and are taken round by friction by plates or
discs on the spindle upon which plates or discs the rollers rest. A stop motion arrests
the spindle or the plate or disc when a thread breaks, but the insertia of the roller
causes it to continue its revolution for some distance after this and when the spindle
or the disc or plate is started again, the insertia of the roller prevents said roller from
starting to rotate at once, in consequence of which the yarn obtains an irregular twist
for a shorter or longer length. This fault is obviated by my improved mechanism;
which arrests and restarts the rotation of the delivery roller or drum instantaneously.
On the sheet of drawings appended hereunto
Fig. 1, represents a side view of my improved mechanism applied to a worsted
twisting frame.
Fig. 2, a plan of the same sectioned along line A B of fig. 1.
Fig. 3, a section of the spindle along line CD on fig. 1.
Only those parts of the twisting frame are shown that are required to ascertain the
nature of my invention, all others being omitted.
The roller or drum a covered with leather and the lower boss b are mounted loose
upon the spindle.c. The drum a and boss b are connected by a peg d or may be
formed in one piece. Into the lower end of the boss b I turn a circular groove 6' as
shewn and place into said groove a catch or pawl e capable of swivelling on the pin f
and held in the position shewn on figs. 1 and 2 by a spring 9. Instead of being
inserted into a groove, as shewn, the catch or pawl may be otherwise attached to the
boss b so as to be capable of vibrating on a pivot at or near its middle. Below the
boss b I fix upon the spindle c a ratchet wheel h or equivalent catch wheel and fix or
form a peg e¹ on the pawle which when the pawl is held in the position shown on the
drawings is seized by one of the teeth of the ratchet h when the spindle is rotated and
the boss b and drum a are thereby rotated with the spindle. The lower flange of the
groove b¹ is cut away for the peg el. The pawl is formed with a tail piece e² at its other
end, the tail projecting outwards from the circular groove so as to form an incline and
having a stop at its end as shewn. The thread or the two threads to be twisted pass
round the drum a as indicated on the drawing and through a snarl i at the end of a
tumbler lever k and on to the twisting spindle. The tension of the threads holds the

page_text: lever in the position shewn on fig. 1, and the weight of the other end of this lever
is so adjusted, that when one of the threads breaks the weight of the lever also breaks
the other and the end ¹ drops down bringing the peg fixed in the end k¹ of the
lever into the path of the tail piece of the pawl e. The pin k acting on the incline
forces the tail end of the pawl inwards and thereby lifts the peg e¹ out of the teeth of
the ratchet, and the boss 6 and drum a are stopped by the turned up end of the pawl
and their motion arrested. The arrangement of tumbler lever as herein described is
similar to that ordinarily used and forms in itself no part of my invention. When the
threads have been pieced up and the tumbler lever k is returned into the position shown
on fig. 1, the spring g will force the pawl back into the position shewn on the drawings
and the peg e¹ will be seized by one of the teeth of the ratchot h and the drum a
rotated immediately with the spindle c.
A similar arrangement may be employed for driving and stopping horizontal delivery
or front rollers of spinning doubling or twisting frames. In that case the bosses of the
front rollers are made separate and loose upon a horizontal shaft, the bosses being
provided with catches or pawls similarly as the boss b herein before described and
driven by ratchet wheels or their equivalent fixed upon the horizontal shaft. Tumbler
levers or their equivalents are arranged so that they come into contact with the
projecting part of the pawls and force the pegs of said pawls out of the ratchet or
catch wheels in a similar manner as herein before described with reference to the
drawings when a thread breaks.
Instead of the tumbler levers herein before referred to being held up by the threads,
they may be held up by a catch capable of vibrating or sliding and connected to
detector mechanism of any suitable ordinary or known kind and the threads be passed
separately through detector wires so arranged that when one of the threads breaks and
the corresponding wire drops, a vibrating finger or rotating spider catches the wire
and thereby moves the vibrating or sliding catch so as to liberate the tumbler
lever.
Instead of vibrating tumbler levers sliding bars or bolts may be used which on the
breakage of a thread are moved by detector mechanism so as to come into contact
with the incline on the pawl and thereby disengage the driving peg from the
ratchet.
I use in some cases a similar arrangement of ratchet and pawl as herein before
described with reference to the drawings for driving and stopping spindles. The
ratchet or its equivalent is in that case connected to a wharve or pulley loose upon the
spindle and driven by a band or to a wheel loose upon the spindle and driven by
gearing, and the catch or pawl is attached to a disc or boss fixed upon the spindle and
is withdrawn from the ratchet teeth by a tumbler lever or sliding bolt coming into
contact with the incline on the pawl or being moved into said contact by detector
mechanism when one of the threads breaks.
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 1
claim is
Driving rollers drums or spindles of spinning doubling twisting winding and similar
machines by means of ratchets or their equivalents and pawls formed with inclines in
combination with selfacting mechanism for disengaging the pawis from the ratchets or
their equivalents by pressing on said inclines on the breakage of a thread or of threads,
substantially as herein before described and illustrated.
Dated thin 9th Jane at Ma.. 1000
EMMOTT & Co.,
Agents for the Applicant.