Improvements in Means or Apparatus for Driving the Bobbins in Cotton Speeder Frames.
Year: 1891

page_text: Date of Application, 29th Dec., 1891-Accepted, 13th Feb., 1892
COMPLETE SPECIFICATION.
Improvements in Means or Apparatus for Driving the Bobbins in
Cotton Speeder Frames.
I, JOSEPH JAY SCHOLFIELD, of 81 Westminster Street, Providence, Rhode
Island, United States of America, Manufacturer of Machinery, 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: -
Heretofore the "bobbin-gear" or pinion which engages with the skew bevel
driving-gear, in cotton speeder frames, has been made with an elongated hub, in
order to give a sufficient length of bearing upon the bolster, to admit of being
driven at the great rate of speed required; the said hub being commonly provided
with a radial flange at its upper end, and with a clutch pin, for driving the
superposed bobbin. In the manufacture of these gears, it has been the custom to
anneal the iron castings, in order to prevent the scale from dulling the tools
employed for finishing the surface of the same, and also to prevent the too rapid
wear of the teeth of the engaging skew-bevel gear which is secured upon the
driving shaft. The softened teeth of the bobbin gear are thus rendered liable to
rapid wear, so that in a comparatively short time the said gear has to be removed,
and a new one substituted in its place, and it is the object of my invention to reduce
the cost of making such substitution; and to that end, my invention consists, in the
combination of a bobbin gear, with a detachable bobbin supporting sleeve, and in
the employment of a screw thread for effecting the detachable connection of the
same, whereby the bobbin supporting sleeve may be detached from the worn out
gear, and utilized, by recombination with a new gear; thus effecting the required.
change of gears, at a comparatively slight cost.
Fig. 1, represents an elevation of the bobbin gear and of the skew-bevel gear by
means of which it is driven.
Fig. 2, represents an axial section of a bobbin-gear and bobbin supporting sleeve,
embodying my improvement.
Fig. 3, is an axial section showing a modification.
Fig. 4, represents an axial section of the bobbin gear, and sleeve as heretofore
constructed in one piece.
In the accompanying drawings, A represents the driving shaft, B the skew-bevel
gear upon the said shaft, and C the bolster, which serves to support the said shaft A,
and also the spindle D, the bobbin supporting sleeve b, and the bobbin gear a; the
said sleeve being preferably provided with a screw thread c, which is adapted to
enter the screw threaded cavity of the gear a, and also provided with the flange f
and clutch pin d, engaging with the head of a bobbin, which is to be placed loosely
upon the bolster C above the bobbin sleeve; and with this construction of my
invention, upon the wearing out of the teeth of the bobbin gear a, the bobbin
supporting sleeve b, may be readily detached from the worn out gear, and then
utilized, by recombination with a new gear, thus saving the expense of making a
new sleeve portion.
A modification of my invention is shown in Fig. 3, in which the bobbin gear a,
is fitted to pass over the end of the bobbin supporting sleeve b, and is secured
thereto by means of the steady pin e, so that the rotary movement of the gear will
be imparted to the sleeve, but the attachment of the parts by means of a screw
thread, is preferred.
Other modifications may be adopted without departing from the spirit of my
invention, the examples given being deemed a sufficient exemplification of the
principle involved.

page_text: 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 :
1. In combination, a bobbin gear, and the bobbin supporting sleeve detachably
secured to said gear, substantially as described.
2. In combination, a bobbin gear provided with an attaching screw thread, and
the bobbin supporting sleeve detachably secured to said gear by the thread of the
screw, substantially as described.
Dated this Twenty-seventh day of November 1891.
JOSEPH JAY SCHOLFIELD.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.