Improvements connected with Ring and Traveller and Cap Frames.
Year: 1891

page_text: Date of Application, 17th June, 1891
Complete Specification Left, 26th Jan., 1892-Accepted, 27th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements connected with Ring and Traveller and Cap Frames.
I, CHARLES NEWTON PICKWORTH of 84 Stanley Grove Longsight Manchester
in the County of Lancaster, Mechanical Engineer do hereby declare the nature of
this invention to be as follows:-
My invention relates to the spindles and bobbins of ring and traveller frames
and of cap frames and consists in improved means for causing said bobbins to be
rotated in unison with said spindles by friction. Hitherto where a flat disc or
flange on the spindle has been used for rotating the bobbin, a single washer of felt,
cloth, leather or similar material has been interposed between the said disc and the
bobbin, said washer having been loose in some cases and fixed either to the spindle
or to the underside of the bobbin in other cases. This arrangement has not been
found to answer in spinning, as the friction of the washer on the metal or the wood
was insufficient to rotate the bobbin in unison with the spindle and consequently
the bobbin lagged behind or slipped more or less and irregular or unevenly twisted
yarn was produced.
My improvement consists in the use of two washers of felt, cloth, leather or
other material having a similar high coefficient of friction, one of which washers, is
fixed to the disc or flange on the spindle and the other to the underside of the
bobbin, so that the bobbin is rotated by the friction between the two washers.
This friction being considerably greater than the friction of one washer on either
iron or wood, the bobbin is rotated in unison with the spindle. The two washers
may be of the same material or of different materials.
Dhin 15th Jan of 10901
CHARLES N. PICKWORTH.
COMPLETE SPECIFICATION.
Improvements connected with Ring and Traveller and Cap Frames.
I, CHARLES NEWTON PICKWORTH of 84 Stanley Grove Longsight, Manchester
in the County of Lancaster, Mechanical 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 the spindles and bobbins of ring and traveller and of cap
frames and consists in improved means for causing the said bobbins to be rotated in
unison with the said spindles by friction.
Hitherto where a flat disc or flange on the spindle has been used for the purpose
of rotating the bobbin, a single washer of felt, cloth, leather or similar material
has been interposed between the said disc and the bobbin, the said washer having
been loose in some cases and fixed to the spindle or to the underside of the bobbin
in other cases. These arrangements have not been found satisfactory in spinning,
as the friction between the washer and the metal or the wood was insufficient to
rotate the bobbin in unison with the spindle and consequently the bobbin lagged
behind, or slipped more or less causing irregular or unevenly twisted yarn to be
produced. My improvement consists in the use of two washers of felt, cloth,
leather or other materials, the friction between which has a similarly high coefficient,
one of which washers is fixed to the disc or flange on the spindle and the other to
the underside of the bobbin, so that the bobbin is rotated by the friction between
the two washers. This friction being considerably greater than the friction of one

page_text: such washer on either wood or metal, the bobbin is rotated in unison with the
spindle. The two washers may be of the same or of different materials.
g
In order that my invention may be more readily ascertained, I have appended
hereunto, a sheet of drawings on which Figure I shows a spindle with a bobbin in
section, and Figure II, a spindle with a pirn in 'section, each with my improvement.
A washer a is attached to the underside of the bobbin b or pirn and a washer c
fixed to the disc or flange d on the spindle. The spindles are preferably of the
flexible or self-centering kind with parallel or cylindrical blades, and the bobbins
or brushes in the bobbins, bored out so as to fit said blades or sleeves f, on the
spindles with an easy sliding fit, so as to allow the weight of the bobbin to come
fully upon the washers. Preferably I use washers of roller cloth as used for
covering the top rollers of spinning frames and glue the same to the underside of
the bobbin and cement them to the disc or flange on the spindle by means of paint,
varnish, or cement as used for covering top rollers with roller cloth. The under-
side of the bobbin may be plain as shown by Figure II, but preferably it is recessed
as shown by Figure I so as to protect the edge of the washer and a metal hoop e
may be driven tight upon the bottom flange of the bobbin and turned over at the
bottom edge as shown, so as to hold the edge of the washer and prevent its
becoming detached by the handling of the bobbins. The disc or flange on the
spindle may also be recessed and the edge turned over the washer as shown in
Figure II and the washer may be secured to it by rivets, wire or thread passed
through holes in the disc or flange, or by equivalent means instead of being
cemented to the disc or flange. Instead of roller cloth, which I prefer because it
is very uniform in thickness and its friction is not injuriously affected by oil-other
materials such as felt, flannel, leather, india-rubber, or compounds of india-rubber
and textile fabrics or materials, or other materials or compounds of materials, the
friction between which has a high coefficient, may be used for the washers, and
when these consist of india-rubber, gutta-percha or similar materials, either in the
pure state or with admixture of other materials, these may be put upon the bobbins
or spindles in a plastic or dissolved state and squeezed flat so as to form washers,
by means of suitable presses.
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 I
claim is :-
Firstly. Rotating the bobbins of ring and traveller and of cap frames by means
of the friction between washers, one such washer being fixed to the underside of
each bobbin, and another to a disc or flange fixed upon each spindle.
Secondly. The combination of the spindles of ring and traveller and of cap
frames with discs or flanges mounted on said spindles having washers fixed to them
and bobbins having washers fixed to their undersides said washers being made of
materials, the friction between which has a high coefficient, substantially as herein-
before described and illustrated by the drawings.
Dated this 23rd day of January 1892.
CHARLES N. PICKWORTH.