Improvements in Spinning and Twisting Machinery.
Year: 1889

page_text: Date of Application, 12th June, 1889
Complete Specification Left, 8th Jan., 1890-Accepted, 8th Feb., 1890
PROVISIONAL SPECIFICATION.
'
Improvements in Spinning and Twisting Machinery.
I, JOHN CLAY, of 23, Howden Terrace, Leeds, in the County of York, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention of improvements in spinning and twisting frames relates to a novel
method of and apparatus for applying what is known as a "drag" to the bobbins in
such machines which is usually applied by a cord (fixed at one end) taking into a
circumferential groove at the lower end of a bobbin, through this cord pressure is
applied laterally to such bobbin by means of a weight at the other end of the said
cord, but as this pressure is applied to one side only of the bobbin, the interior
thereof bears against the spindle which it surrounds and thereby causes unnecessary
friction between the spindle and the bobbin, for while the spindle together with the
material it is coiling upon the bobbin, tends to cause the latter to rotate therewith, the
action of the cord and weight tend to retard such movement, but in suchwise as to
permit of the requisite differential rotative movement of the bobbin during the coiling
on of the material under treatment.
Now my present invention has for its object the application of a greater amount of
brake power or "drag" on the bobbin than is possible under the present system of
applying the "drag" thereto, and with the same or less weight than heretofore in
use, and also without the drag cord being in direct contact with the bobbin. The
bobbin is held in a concentric position to the spindle which it surrounds while still
being able to rotate differentially while being filled as above referred to and capable of
ready removal when full and replacement by an empty one without requiring
adjustment of the drag cord and weight as heretofore usual.
For this purpose I make the bottom end of the bobbin conical, which part I
surround with a ring or clip of metal or other suitable material, the interior of which
fits the said conical part of the bobbin and which may be parted at one or more
places. This ring or parts thereof is or are so connected to the bobbin lifter as to
yield when a bobbin is placed in position or removed therefrom.
The exterior of the abovenamed ring I make of sheave form around which I cuil
the drag cord, this. is fixed at one of its ends as usual and provided at the other end
with a weight which draws the ring or its parts together and thus grips the conical
part of the bobbin which in this case does not necessarily press against the spindle.
The bobbin is prevented from rising upon the spindle during filling by reason of the
conical grip thereon.
Portions of the interior of the said conical part of the ring or parts thereof may
be removed so as to grip the bobbin at one or more points only instead of all
round.
COMPLETE SPECIFICATION..
Improvements in Spinning and Twisting Machinery.
I, JOHN CLAY, of 23 Howden Terrace, Leeds, in the County of York, 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:
"6
This invention of improvements in spinning and twisting frames relates to a
novel method of and apparatus for applying what is known as a drag" to the
bobbins in such machines which is usually applied by a cord (fixed at one end) taking

page_text: into a circumferential groove at the lower end of a bobbin, through this cord pressure
is applied laterally to such bobbin by means of a weight at the other end of the said
cord, but as this pressure is applied to one side only of the bobbin the interior thereof
bears against the spindle which it surrounds and thereby causes unnecessary friction
between the spindle and the bobbin, for while the spindle together with the material it is
coiling upon the bobbin, tends to cause the latter to rotate therewith, the action of the
cord and weight tends to retard such movement, but in such wise as to permit of the
requisite differential rotative movement of the bobbin during the coiling on of
the material under treatment.
Now my present invention has for its object the application of a greater amount of
brake power or "drag" on the bobbin than is possible under the present system of
applying the "drag" thereto, and with the same or less weight than heretofore in
use and also without the drag cord being in direct contact with the bobbin.
The bobbin is held in a concentric position to the spindle which it surrounds while
still being able to rotate differentially while being filled as above referred to, and
capable of ready removal when full and replacement by an empty one without
requiring adjustment of the drag cord and weight as heretofore usual.
For this purpose I make the bottom end of the bobbin conical, which part I
surround with a ring or clip of metal or other suitable material the interior of which
fits the said conical part of the bobbin, and which may be parted at one or more
places. This ring or parts thereof is or are so connected to the bobbin lifter as to
yield when a bobbin is placed in position or removed therefrom. The exterior of
the abovenamed ring I make of sheave form around which I coil the drag cord, this
is fixed at one of its ends as usual and provided at the other end with a weight
which draws the ring or its parts together and thus grips the conical part of the
bobbin which in this case does not necessarily press against the spindle.
The bobbin is prevented from rising upon the spindle during filling by reason of
the conical grip thereon. Portions of the interior of the said conical part of the
above named ring or parts thereof may be removed so as to grip the bobbin at one
or more points only in each section of the ring instead of all round.
Instead of a weight as above referred to for imparting the necessary drag or grip
on the bobbin I use mechanism such as shewn in the annexed drawings hereinafter
described, but to which I lay no claim, by means of which "drag" can be regulated
separately upon each respective bobbin in a frame or it can be increased or
diminished simultaneously when required.
In the annexed drawings similar letters refer to like parts in all the views.
Fig. 1. is a front view in part of a Spinning and Twisting machine.
Fig. 2. is a transverse section of such part, and Fig. 3. is a plan of the same.
a, is the part known as the bobbin lifter, b, a spindle in part upon which is placed
a bobbin c, with its bottom end of conical form, d, is the gripping ring having a
conical interior corresponding to that on the bobbin, its external periphery being
of a groove or sheave-like form, the ring is shewn in three parts and attached to the
bobbin lifter a, in suchwise as to permit of its being drawn towards the bobbin so as
to retard its rotating movement due to the draft of the material being wound upon
it, e, is the drag cord coiled around the said ring for causing it to press on the bobbin,
its end 1. may be fixed to the bobbin lifter or as shewn in the drawing to a wind-
'ass f, (one such cord being used for each spindle) the other end 2. may have a
weight as described in my Provisional Specification, or it may be attached to a
nut, which being in connection with the screw h, regulates the drag on each
bobbin separately.
The windlass, puts on a number of bobbins more or less drag simultaneously
according to the direction in which it is turned.
wish it to be understood that with respect to the arrangement for regulating
the drag upon the bobbins separately by means of the screw g, or simultaneously
by the windlass f, I lay no claim.
The upper corner of the conical interior of the ring d, may be slightly bellmouthed
to allow of the easily placing of a bobbin therein.

page_text: 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 Spinning and Twisting machines making the bottom end of bobbins used
therein of a conical form, substantially as and for the purpose hereinabove described
and shewn.
A
2. In Spinning and Twisting machines, the use of a metallic or other ring in one
or more parts for surrounding and gripping the bobbins by their conical ends referred
to in the previous claim, and whose conical interior corresponds therewith.
groove or sheave-like form of periphery on the said ring for the reception of a
tightening cord for closing it or its parts and effecting the required drag or brake
upon the bobbins substantially as described and shewn.
Dated this 7th day of January 1890.
THOMAS EDWIN CRAVEN,
Agent for the Applicant.