An Improvement in Bobbins used in Spinning and Twisting Frames..
Year: 1893

page_text: COMPLETE SPECIFICATION.
An Improvement in Bobbins used in Spinning and Twisting Frames..
We THOMAS PARKINSON, WILLIAM WALLACE COULBORN, EDWIN
HERBERT WATERS, and JOSEPH PALMER, all trading as Waters & Rigg of
Longtown in the County of Cumberland Bobbin Manufacturers, 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:-
Our invention relates to that class of wooden bobbins used in spinning and
twisting frames wherein the bobbins are driven by two wings or projections from
the spindles which take into notches or recesses formed in the underside or lower
end of the wooden bobbins for that purpose, the object of the invention being to
protect such notches or recesses from wear and thus to increase the steadiness of
driving and to prolong the life of the said bobbins.
The nature of our said invention and the manner in which the same is to be-
performed or carried into practical effect will be readily understood on reference to
the annexed sheet of drawings and the following explanation thereof.
For the purposes of our invention we line each of the notches or recesses in
the bottom of the bobbin with a metal plate formed and fixed in the following.
manner.
In the first place by means of a suitable cutter or tool we cut two nicks a in the
end of the wooden bobbin, forming a prolongation of each side of the notch or
recess and deeper than the notch itself, as shown in sections at Figs. and 2 of the.
drawing and underneath view Fig. 3, and into these two cuts or nicks we drive.
tightly two metal plates cut or punched from sheet brass or other metal as shown
at Figs. 4 and 5 of such a form as to line each side of each notch or recess with
metal as shewn in vertical section at Fig. 6 and underneath view at Fig. 7 and thus
protect the wood of which the bobbin is formed from the action of the driver or-
drivers.
The metal plates Figs. 4 and 5 are flat with the exception of the central part >>*
which is made with a hollow curve to fit round the spindle and in order to allow of
the plates being driven into the cuts or nicks a in the wood but to prevent them.
from coming out they are roughened or burred on the outside in the same way as a
rasp as seen at Fig. 4, the tool being held in such a position that the points of the
burrs project upwards so that the plates can be driven in but the burrs hold them in
place and prevent them from readily coming out.
We are aware that attempts have been made to line the inside of the notches or-
recesses of such bobbins, and therefore we lay no claim to the mere fact of lining-
them with metal so long as the peculiar novel feature of our invention as above-
described are not employed.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what.
we claim is :-
The method of lining the insides of the notches or recesses in the lower end of
wooden bobbins used for the purposes above specified by cutting nicks in the wood
forming continuations of the sides of the notch or recess and driving thereinto.
plates of sheet metal, the side of the said plates next to the wood being roughened
or burred in the same way as a rasp by cutting up teeth or burrs thereon so formed
as to allow the plates to be driven into the notches, but to prevent their being

page_text: withdrawn therefrom substantially in the manner and for the purposes hereinbefore
set forth and illustrated by the drawings annexed.
Dated this 19th day of June 1893.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.