Year: 1889

page_text: We EDWARD DUERDEN, Weaving Master and JOSEPH CHEETHAM, Spinning Master
both of Ismailoffski Manufactory, Ismailove near Moscow, Russia do hereby declare
the nature of our said invention and in what manner
the same 15 to be
performed to be particularly described and ascertained in and by the following
statement:-
The object of this invention is the application to shuttles of a simple and reliable
arrangement of spring for effectually locking the tongue in its working position in the
shuttle and also to prevent the wear upon the root of the tongue arising from the
pressure and abrasion of the spring hitherto employed often resulting in the rounding
off of the base of the tongue and rendering the tongue loose and liable to fly up in
passing through the shed. Shuttle tongues so flying up and coming in contact with
the warp have hitherto caused great damage to the cloth being woven.
On the accompanying drawing Fig. 1 is a side sectional view and Fig. 2a plan view
of a shuttle embracing our improvements and shewing the tongue locked in position.
Fig. 3. represents the same plan view but showing the spring pressed back out of the
way in order to allow the tongue to turn up.
In all the views a is the wooden body of the shuttle which is of the ordinary
description. is the shuttle tongue the upper part of the base of which is formed with
a lip or projection e inclining slightly from one side to the other as seen more clearly
in the plan views. dis our improved spring which is secured in position by one or
more screws e e in a shallow recess formed in the end of the shuttle to accommodate
it. The front extremity of this spring which is formed as a thumb piece d' extends
over the base of the tongue when put down in its place and the end of the spring
presses against the inclined surface of the lip or projection e and so firmly bolds the
tongue in its working position. In practice it is found that the tongue is so securely
held that it is almost impossible to lift the tongue without the spring being first
released. To raise the tongue for renewing the cop it is only necessary to push the
front extremity of the spring to one side as indicated in Fig. 3 and which is con-
veniently done by pressing the thumb upon the thumb piece d'.

page_text: We mount the tongue upon a hardened steel bush of large diameter f as seen in
separate view Fig. 4 and this bush in its turn is secured upon a tapered fulcrum or
pin g.
The hole in this bush is drilled to the same taper as the fulcrum pin so that
when the latter is driven into it the two become fast together and consequently
the shuttle tongue instead of working on the small diameter of the fulcrum pin
as in the ordinary shuttles works on the larger diameter of the bush and
by so working on a larger bearing surface there is considerably less wear and tear of
the hole and pin. In oiling the bearings of an ordinary shuttle the oil is poured
between the sides of the shuttle tongue and the wooden part of the shuttle and very
little if any oil gets to the pin but with our improved method of mounting we are
enabled to provide an oil hole so that the oil goes direct to its place. We also
provide a small steel plate firmly fastened to the wooden part of the shuttle as
illustrated and so that when the tongue is put down in its working position the extreme
end or heel of the tongue comes in contact with this plate and is thus effectually
supported and prevented getting below its proper place.
It will be observed that this improved shuttle contains only one pin the large space
hitherto occupied by the spring being left solid thus strengthening the shuttle con-
siderably at this part.
Having thus particularly described and ascertained the nature of this our said
invention and in what manner the same is to be performed we declare that what we
claim is :-
1st. The improved construction and arrangement of shuttle spring in combination
with the inclined lip or projection upon the shuttle tongue base simultaneously as
and for the purpose hereinbefore described and illustrated on the accompanying
drawing.
2nd. Mounting the shuttle tongue upon a hardened steel bush of large diameter and
carried by a taper pin or fulcrum substantially as and for the purpose hereinbefore
described and illustrated on the accompanying drawing.
Dated this Oil Jan CM
1000
JOHN G. WILSON,
Patent Office,
55, Market Street, Manchester,
Agent for the Applicants.