Improvements in Stop Motions or Apparatus for Stopping the Delivery when a Sliver or Yarn Breaks in Spinning, Twisting, and like Machines.
Year: 1893

page_text: Date of Application. 25th Apr., 1893-Accepted, 1st July, 1890
Date of Application. 25th Apr., 1893—Accepted, 1st July, lobo
COMPLETE SPECIFICATION.
Improvements in Stop Motions or Apparatus for Stopping the
Delivery when a Sliver or Yarn Breaks in Spinning, Twisting,
and like Machines.
1, REGINALD HADDAN of the firm of Herbert Haddan & Co. of 18
Buckingham Street Strand W.C. Patent Agent do hereby declare the nature of
this invention a communication to me from abroad by Paul Jacquart, of
Tourcoing, in the Republic of France, Spinner 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 stop motions adapted to automatically arrest and stop
the delivery of a sliver or yarn in any kind of spinning, or twisting machine or
It is based upon
other machine dealing with threads or filaments in movement.
the usual principle heretofore known in such stop motions, namely that the breakage
of the sliver allows a needle or lever to fall in such a way as to stop some part of
the machinery-the improvements however relate principally to the means with
which the needle or lever co-operates to effect the stopping of the delivery or
movement of the sliver or yarn.
In the drawings hereto annexed
Fig. 1 is a perspective view of the form of stop motion employing a needle.
Fig. 2 is a side elevation and Fig. 3 a front elevation thereof.
Fig. 4 is a side elevation and Fig. 5 a front elevation of the stop motion as
applied to a lever.
Referring to Figs. 1 to 3 the sliver encircles a small rotary drum of which the
one part C is surrounded with cloth or felt and the other part L rigid therewith
is provided with a series of peripheral perforations or holes the size of which is
immaterial. A flange separates the parts C and L. This drum turus freely on its
axis and its motion is given to it by the drawing of the sliver which passes round
it. The sliver passes to the guide T thence to the guide S and to the guide Q.
Between S and T the sliver supports the needle A¹ which is held suspended by the
tension of the sliver and is thus maintained poised above the part L of the drum.
If the sliver breaks the needle falls into the position shown at A' and its end falls
into one of the holes in the drum L thus bringing the drum to rest and stopping
the delivery of the sliver. The needles are carried in a suitable needle box G
which may be made to contain any number of needles so that this stop motion
mechanism may be applied to doubling or twisting machines, in which all the
slivers a passed round the drum C and each thence to a separate needle, or to
reeling and spooling machinery in which a single sliver or yarn only is passed
5 round the drum C and only one needle employed. The invention is thus applicable
to any of the various kinds of continuous acting machines dealing with slivers or
yarns or threads in movement.
10
The parts described are carried on a light frame B provided with a foot P
which may be secured to the frame of the machine by screws.
Figs. 4 and 5 show the stop motion applied to a lever M¹ which is more
particularly suitable for a continuous spinning machine. The drum with its
parts C L and intermediate flange is of the same construction and the lever M' is
pivoted at O so that the one arm suitably bent may engage with the part L and the
other arm may end in a hook or eyelet Q' through which the sliver passes on its
45 way to the bobbin. The sliver F here passes first around the drum at C thence
through a water bath B to the delivering rollers Z Z' and thence to the eyelet Q
So long as tension on the sliver holds down the end of the lever as shown in the
ower position in Fig. 4, the drum is free to turn, but if the sliver breaks betweer

page_text: the delivery rollers and the bobbin the lever M¹ falls into the position shown at M
and stops the rotation of the drum so that the sliver is no longer delivered.
The mechanism shown in Figs. 4 and 5 is simpler than that in Figs. 1 to 3 since
the needle box and needles are dispensed with in favor of the simpler construction
of lever M' which is simply a bent iron or steel wire suitably balanced.
In doubling and twisting machines both these mechanisms may be employed the
first for the slivers which precede the delivering rollers, the second for that part of
the sliver or assembled slivers between the delivering rollers and the spindle.
Thus if only the first system of stop motion be employed preceding the delivering
rollers breakage of the sliver between the rollers and spindle would not prevent
the continuance of delivery by the rollers unless a second or auxiliary lever were
employed in addition to be controlled by that part of the sliver between the
delivering rollers and the spindle.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed I declare that what I
claim is ;-
An automatic stop motion for the purpose or purposes described consisting in the
combination with a needle or lever upheld by the sliver or its equivalent of a drum
with holes adapted to receive the needle or lever on falling, said drum being
encircled by the sliver and revolved thereby substantially as herein described.
Dated this 25th date of
day of April 1802
R. HADDAN.
Herbert Haddan & Co.,
18, Buckingham Street, Strand, London.