Improvements in or relating to Apparatus for Spinning or for Doubling and Twisting Silk.
Year: 1888

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Apparatus for Spinning or for
Doubling and Twisting Silk.
A communication from abroad by JOSEPH ALLYN CHAPMAN, of New London, New
London County, State of Connecticut, United States of America, School
Teacher.
I, WILLIAM PHILLIPS THOMPSON, F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors, 6 Lord Street, Liverpool, and 6 Bank Street, Manchester, both in
the County of Lancaster, and 323 High Holborn, in the County of Middlesex, Civil
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 :-
This invention relates to machinery for spinning or doubling and twisting silk,
and is provided to overcome a common tendency on the part of the fine strands of silk
to kink as the spindles are stopped. This is caused chiefly by the fact that the bobbin
continues to rotate (by its momentum) after the drawing-rolls or take-up spool stop,
leaving the silk slack and, as a natural consequence, this slack portion immediately
doubles and twists together. Owing to the strand being very fine and easily broken,
the operation of straightening out such kinks becomes a tiresome and expensive one.
This invention is. intended to overcome this serious difficulty, and accomplishes the
desired result by providing an annulus of plush or similar fibrous, springy, material
around the head of the bobbin.
In order to explain said invention more readily a sheet of drawings is added hereto,
in which figure I is an elevation of a bobbin and a portion of the spindle, and shows
also the take-up spool and tension eye.
Figure 2 is a top end view of the bobbin.
Figure 3 is an elevation of a bobbin and spindle having connected therewith a
flyer for use with bobbins having broken or mutilated heads.
The simplest and preferred form of said invention is illustrated in figure 1 of the
drawings, the bobbin proper being indicated by the letter a and the strand of silk by
letter b.

page_text: e denotes the spindle which carries the bobbin, d the take-up spool and e the tension
and guide-eye.
The bobbin has an annular groove turned in the head at the upper or delivery end,
and in this groove is cemented or otherwise securely fastened, preferably, a narrow
strip of plush whose wiry nap projects radially a slight distance beyond the adjacent
bobbin head (see particularly figure 2). When the bobbin is swiftly rotated, in the
act of spinning or doubling, the fine strand fis drawn off from bobbin a against the
elastic force of the plush which yields readily to the power of the drawing rolls, but
when the bobbin is stopped the plush then acts as a multiple of minute springs with
strength enough to carry around with the bobbin head the slack portion of the strand
and thus draw it taut and prevent it from kinking.
The strand of silk, as it leaves bobbin a, draws against the wooden head or flange
of said bobbin the same as in ordinary spinning frames, and this wooden head or
flange sometimes becomes broken or mutilated by hard and constant usage, and if
used in such condition the silk would be quickly broken when drawn across such
mutilated portions. To make such bobbins available for further use a flyer is pro-
vided, formed of a collar h fitted to rotate loosely on the spindle, independent of the
bobbin, and having radial wires i i¹, the former of which terminates in an eyen through
which the silk passes, the latter being bent downward into engagement with the nap of
the plush annulus.
Eyen holds the silk from engagement with the mutilated bobbin head and the bent
wire co-operates with the plush to produce the same degree of friction and the same
general result as when said silk is in direct contact with the plush as first above
described.
Plush is generally referred to in the foregoing specification as the material employed
around the bobbin head but bristles, hair, vegetable fibre, or any other material by
which an extremely sensitive, yielding annulus can be attached to, and formed around
said hobbin head, may be used as well.
It will thus be noted that said invention in its simplest form is in fact an improved
form of bobbin and, when so used, does not require any changes whatever in the
spinning mechanism.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is :-
1-A bobbin for silk spinning, having the flange or head at the delivery end grooved
annularly and having fixed within said groove a ring of plush or similar material
whose nap projects outward into the path of the strand of silk, substantially as and for
the purpose specified.
2 In combination with the spindle of a silk spinning machine, a bobbin adapted
to engage and rotate with said spindle, the flange at the delivery end of said bobbin
being provided with an annulus of plush, substantially as herein described and for the
purpose specified.
Dated this 18th day of Tu 1000
WM. P. THOMPSON. & Co.,
Agents for the Applicant.