A New or Improved Stop Motion for Yarn Doubling or Twisting Machines.
Year: 1899

page_text: Date of Application, 13th Apr., 1899
Complete Specification Left, 15th Jan.. 1900-Accepted, 17th Feb., 1900
A New or Improved Stop Motion for Yarn Doubling or Twisting
Machines.
I, JOSEPH DoroNT, of 13, Ireton Street, Princeville, Bradford, in the County
of York, Warehouseman, do hereby declare the nature of this invention to
be as follows:-
This invention relates to a new or improved stop motion for yarn doubling
and twisting machines, and its object is to stop the feed rollers when an
end breaks.
For this purpose I employ a lightly weighted lever for each end of yarn
pivoted at the rear of the rollers, and the rear ends of said levers are adapted
to be supported in a raised position by the ends of yarn. The other ends of
the weighted levers project beneath a lightly pivoted tumbler extending under
a curved lever upon which a slide piece rests. This slide piece has a leather or
equivalent tongue at its upper end extending almost into the nip of the rollers
and the parts are so relatively constructed and arranged that if an end breaks
the lever supported thereby falls and thereby causes the said leather tongue to
pass into the nip of the rollers and stop them.
A weighted lever may be provided in front carrying a feeler roller over which
the combined ends pass and the tension of the ends keeps the roller end of the
lever depressed then in case the twisted ends break the roller springs up and
the other end of the lever falling. engages a crank lever or the like which by
its movement raises the said slide piece.
T 1941 dor of Anril 1899
DRACUP & NOWELL,
Patent Agents, Bradford.
COMPLETE SPECIFICA HUA.
A New or Improved Stop Motion for Yarn Doubling and Twisting
Machines.
I, JOSEPH DoroNT, of 13, Ireton Street, Princeville, Bradford, in the County
of York, Warehouseman, 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 relates to a new or improved stop motion for yarn doubling

page_text: and twisting machines, and its object is to stop the feed rollers when an
end breaks.
To fully describe my invention, reference is made to the accompanying sheet
of drawings forming a part of this specification, in which similar figures of
reference indicate corresponding parts in each of the views.
Figure 1, represents a side elevation partly in section of my improved stop
motion together with a cross section of the feed rollers of a twisting machine.
Figure 2, is a front view, and Figure 3, is a plan view of the same.
to.
Figure 4 and 5 is a side view and a back view of details hereinafter referred
To carry out my invention I employ a lightly weighted lever 2 for each end
of yarn represented by the broken lines 3 Figures 1 and 3. Two or more
levers may be used, in the drawings four are shown but only two are in use
the remainder being held up by the removable cross piece 4. Each thread of
yarn is passed through a separate eye 6 of one of the levers 2 before reaching
the rollers 7 and 8 between which they pass then up and back round the tension
pin 9 and again between the rollers to the twisting spindle and are twisted
in the usual way. In this way each thread of yarn passing from the usual
supply bobbin to the feed rollers so long as it remain unbroken supports one
of the levers approximately in the inclined position most clearly shown in
Figur 1. The levers 2 are provided with weights 10 and are delicately pivoted
on the cross pin 12 supported in the uprights 13 secured to the rail 14. The
other ends 15 project beneath a tumbler 16 delicately pivoted between the
uprights 13, and having a projection 17 extending beneath the curved lever 18
upon which the slide piece 19 rests. The slide piece works in a guide 20
formed in the standard 21 within the slot 22 of which the lever 18 is pivoted.
In Figures 4 and 5 the standard 21 and certain other parts are shown on a larger
scale. The slide piece 19 has a leather or equivalent tongue 24 at its upper
end extending almost into the "nip" of the rollers 7 and 8. If an end breaks
the lever supported thereby falls and its end 15 engaging the tumbler 16
lifts it, and its projection 17 raises the curved lever 18 thereby lifting the
slide piece 19 until its tongue 24 passes into the nip of the rollers. This raises
the top roller 7 out of contact with the bottom or driving roller 8 so that it
remains stationary and the feed of the remaining end or ends of yarn by such
rollers is suspended.
A lever 30 pivoted at 31 may be provided to project in front of the rollers 7
and 8 and carry a feeler roller 32. A weight 33 is fixed to the other end 34
of this lever sufficiently heavy to lift the end carrying the roller 32 unless
such roller is held down by the twisted ends of yarn passing over it. A lever
40 is pivoted in the standard 21 one arm 41 of which projects beneath the
end 34 of the lever 30 and the other arm 42 projects beneath the curved
lever 18, consequently if the twisted ends break between the rollers and the
twisting spindle the end 41 of the lever 40 is depressed and the other end 42
being consequently raised it engages and lifts the curved lever 18 and the
slide piece 19 thereby causing the tongue 24 to pass into the nip and stop
the rollers. A guide eye 50 for the yarn may be formed on the end of the lever.
Any suitable provision is made for holding the end of the lever 30 carrying
the feeler roller 32 down when doffing takes place as the yarn may not be
under sufficient tension at the time the machine is again put into action to
prevent the lever putting the stop mechanism into operation.
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. The combination with the levers 2 of the tumbler 16 lever 18 slide piece 19
and tongue 24. substantially as herein described and illustrated

page_text: 2. The combination with the lever 30 of the lever 40, the lever 18, the slide
piece 19 and the tongue 24, substantially as herein shown and described and
illustrated.
Dated this 12th day of January 1900.
DRACUP & NOWELL,
Patent Agents, Bradford..