Improvements relating to the Mounting of Bobbins on the Spindles of Ring and Traveller Spinning and Doubling Frames.
Year: 1890

page_text: Date of Application, 27th Mar., 1890-Accepted, 12th July, 1890
COMPLETE SEMIFICATION.
Improvements relating to the Mounting of Bobbins on the Spindles
of Ring and Traveller Spinning and Doubling Frames.
1, THOMAS WRIGLEY of Waterside House, Todmorden in the County of York, Mill
Manager, 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 ring spinning and doubling frames and consists in improved
means for imparting rotary motion to bobbins used thereon.
According to my invention I bore the bobbin so that it fits loosely upon a taper or
cylindrical spindle and form the underside of the bobbin with a conical recess, and fix
upon the spindie a conical seating for the bobbin to rest on. The bobbin is rotated by
the friction of the conical surfaces of the bobbin and seating caused by the weight of
the bobbin.
On the sheet of drawings appended hereunto a spindle and bobbin made in accordance
with my invention are shewn in elevation and section respectively.
A frustrated cone a is fixed upon the spindle b, and may form part of the wharve c
as shewn, or be a separate piece driven tight upon the spindle. The sides of the cone
may extend to the blade as shown or may stop short at some distance from the blade.
The cone a forms a seating for the bobbin d, the flange and barrel of which are bored
out so that they fit the cone a as shewn. The bobbin fits loosely upon the spindle
blade 6, which may be tapered as shewn or cylindrical, so that the bobbin rests with
its weight upon the cone a. The barrel of the bobbin may be solid for its entire
length and bored for the blade, or may be cored out as shewn on the drawing
fitting the blade 1, loosely at the top and having a plug inserted into its lower end,
which is bored for the blade and turned out at its underside to fit the cone a when
the latter extends to the blade. The bobbin is thus guided by the blade and will not
lift if accidentally pushed sideways and if lifted will drop down again upon its conical
seat, while the cone holds the bobbin centrally on the spindle.
The friction between the cone a and the conical underside of the bobbin causes the
bobbin to rotate with the spindle. By varying the weight of the bobbin, for instance
by altering the length of the plug for hooping the bottom flange of the bobbin, or by
altering the angle of the cone, the friction can be adjusted to the exact amount
required for driving the bobbin and traveller and winding on the yarn, so that when
the drag of the yarn increases, as will be the case for instance while the ring rail
descends, the bobbin can slip and a more uniform and softer yarn is produced than
when the bobbin or tube is pushed tight into a cup or upon a sleeve or blade of the
spindle as usual in ring spinning frames.
I am aware that flanged bobbins rotated by frictional contact with parts fixed upon
the spindle have been used before on ring frames, and I do not claim the inethod of
imparting rotary motion to bobbins by frictional contact with the spindle or parts
fixed thereon generally, but
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. In ring frames the arrangement and use of bobbins with conical recesses at

page_text: driving the bobbins substantially as hereinbefore described and illustrated by the
drawings.
Secondly. In combination with the spindles of ring frames, cones (a) fixed to said
spindles and bobbins (d) bored out conically to fit said cones, substantially as herein-
before described and illustrated by the drawings and for the purpose set forth.
Dated this 26th day of March 1890.
W. T. EMMOTT,
Agent for the Applicant.