AN IMPROVED SPOOL AND MACHINE WOUND SPOOL OF THREAD FOR SEWING MACHINE SHUTTLES
Year: 1875

page_text: PROVISIONAL SPECIFICATION left by Roscoc Charles Spurin at the
Office of the Commissioners of Patents, with his Petition, on the
25th October 1875.-A communication from abroad by Orlando
Thowless, of Guelph, County of Wellington, in the Province of
Ontario, Dominion of Canada.
I, ROSCOE CHARLES SPURIN, at present residing in the Town of
Kingston-upon-Hull, in the County of the same Town, Chemist and
Druggist, do hereby declare the nature of the said Invention for "AN
IMPROVED SPOOL AND MACHINE WOUND SPOOL OF THREAD FOR SEWING MACHINE
SHUTTLES,” a communication to me from abroad by Orlando Thowless, of
Guelph, County of Wellington, in the Province of Ontario, Dominion of
Canada, to be as follows:-
:—
This Invention relates exclusively to the spools or bobbins employed
in the shuttles of sewing machines, and has for its object the providing
a more handy substitute for the spools hitherto used in such machines.
Heretofore the shuttles of sewing machines have been provided with
a special metal spool which has to be filled or wound with thread by
the operator each time its supply has become exhausted. In shuttle

page_text: machines this is a serious objection inasmuch as owing to the necessarily
restricted dimensions of the spool or bobbin, it will only contain a
comparatively short length of thread, which is soon expended, and
consequently the operator is frequently compelled to stop the machine
and commence the operation of rewinding or filling the shuttle spool.
This operation of rewinding by hand necessitates the adaptation to the
machine of a special winding or spooling appliance; and as the thread is
guided on to the spool by the hand alone of the operator the winding is
necessarily irregular or uneven, and the thread in the process of stitching
is drawn off the spool with great irregularity of strain or tension which
is inimical to good stitching.
Now by the use of this Invention the tedious and imperfectly per-
formed operation of hand winding as well as the loss of time incurred
thereby is entirely avoided. For this purpose it is proposed to sub-
stitute for the ordinary shuttle spools ready filled spools of a special
make composed of wood or other inexpensive material which will admit
of their being supplied ready filled at a cheap rate, the thread being
wound thereon ready for immediate use in a regular and even manner
by machinery for the purpose. When empty the spool is cast aside and
a full one at once inserted in its place without the operation of spooling.
As the thread is wound with perfect regularity and precision a given
sized spool will contain more thread and will thus last longer than an
ordinary hand wound spool, whilst at the same time a perfect uniformity
in the strain or tension on the thread as it is drawn off the spool is
ensured, and hence better work is produced.
The improved spool itself, in lieu of being of metal, is of wood or other
cheap and easily worked material, and is formed with a barrel and end
flanges made conical or bevelled on the inner sides, and with per-
pendicular faces at the extremities; and is further provided with a small
projecting conical pointed nipple turned in the centre at each end of the
spool, and fitting into the usual holes or recesses for their reception in
the shuttle so that an empty spool can be removed and replaced by a
full one with the greatest facility and dispatch.