Improvements in Top Rolls for Spinning Frames, Drawing Frames, and like Machines.
Year: 1897

page_text: Date of Application, 9th Mar., 1897-Accepted, 26th June, 1897
UOL DELE DE MULE VATION.
Improvements in Top Rolls for Spinning Frames, Drawing Frames,
and like Machines.
We, LEON WILLIAM CAMPBELL, and MALCOLM CAMPBELL both of
Woonsocket, in the County of Providence and State of Rhode Island, United
States of America, Gentlemen, do hereby declare the nature of our 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 top-rolls for spinning-frames, drawing-frames, mules,
speeders, and other like machines, and has for its object to provide a roll equipped
with anti-friction bearings, whereby it will be capable of revolving with a minimum
of friction and without the employment of lubricating-oil.
One of the greatest disadvantages resulting from the employment of bearings
for which lubricating-oil is a necessity, is that the oil creeps onto the leather or
rubber of the rolls, so as to injure them and shorten their lives, besides causing the
cotton or yarn to adhere to their peripheries. Moreover, it is impossible to always
revolve rolls requiring the use of lubricating-oil, evenly and without dragging, since
there are many times when the operative neglects to lubricate the bearings, and
since the top-roll is not positively driven, its stoppage, even though it may be
minute, is injurious and a detriment to the production of perfect yarn.
Therefore the invention consists of a top-roll possessing those features of
construction and arrangement of parts which will be hereinafter described in detail
and more fully pointed out in the claims hereto appended.
Reference is to be had to the accompanying drawings and to the letters and
figures of reference marked thereon, forming a part of this specification, the same
letters designating like parts or features, as the case may be, wherever they
occur.
Of the drawings
Figure 1 is a side elevation of a roll constructed in accordance with the
invention.
Figure 2 is a vertical longitudinal section through the same.
Referring to the drawings,
a represents the main arbor or bearing, upon which the pressure of the holding-
down weights is applied through the usual saddles, it having an enlarged central
portion a, a reduced spindle a projecting from each end, each spindle a' being
connected with the central portion a¹ by a concavo-conical bevel surface a. Each
of the spindles a' is threaded to receive a concavo-conical nut b, which may be
adjusted along the spindle and secured in any position by the lock-nut b².
The nut 6 and the concavo-conical portion a³ of the arbor furnish cone-bearings
for the anti-friction balls c, which are held between them and the sleeve d, the latter
being counterbored at each end to provide an internal bevel surface d'. By
adjusting the conical nut 6', any wear may be compensated for, and the sleeve may
be kept running smoothly and evenly.
Upon the sleeve d is placed the shell e, held thereon temporarily by any con-
venient means, such as a spring-ring, shown at e'. The periphery of the shell may
be covered with leather, rubber, or other material, to form frictional cushioning
surfaces for the yarn.
From the foregoing, it will be observed that a peculiarly simple roll is provided,