Improvements in or applicable to the Construction and Action of the Swells, Shuttle Boxes, and Protector Gear of Looms for Weaving Textile Fabrics.
Year: 1893

page_text: Date of Application. 8th Feb., 1893-Accepted, 11th Mar., 1893
COMPLETE SPECIFICATION.
Improvements in or applicable to the Construction and Action of
the Swells, Shuttle Boxes, and Protector Gear of Looms for
Weaving Textile Fabrics.
:
I, ROBERT SCOTT, of Craigmount, Tayport, in the County of Fife, N.B.
Manufacturer, 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 :-
This invention relates to improvements in or applicable to the construction and
action of the swells, shuttle boxes and protecting gear of looms for weaving textile
fabrics; its objects being to reduce wear and tear on the swells, box backs and
fronts, shuttles, protector gear, and other parts of such looms, together with the
power required for actuating same.
And in order that my said invention may be properly understood, I now proceed
more particularly to set forth the system, mode or manner, in or under which the
same is or may be used, or practically carried into effect, reference being made to
the accompanying drawings, and to the letters and figures marked thereon, that
is to say :-
Figure 1. is a front elevation, with the front of box removed, of a shuttle box
and its appurtenances, showing the shuttle in the act of entering the box and
lifting the protector.
Figure 2. is a sectional elevation at A. A. (Figure 1.), Figure 3. a plan of same,
and Figure 4. a sectional elevation at A. A. (Figure 1.) showing another
modification.
Figures 5. and 6. respectively illustrate a side view and a plan of the
spring swell.
In carrying out my invention according to one modification, I employ a swell 7.
fashioned as shewn and made of steel, the one end of which is fixed at 8. to the
lay 9. the other extremity being free to vibrate about the spring joint or fulcrum 21.
A block of wood 10. is attached to such swell, to form a pad against which the
finger 11. presses, such pressure being chiefly due to the action of the spring 12.
In lieu of the martingale strap, another strap 13. may or may not be used. Such
strap is fixed to the lay at 14, its purpose being to act as a cushion for the
picker 15.
The action of the apparatus is as follows:-The shuttle 16. as it enters the box,
presses against the shoulder 17. of the spring swell, causing it to press back the
finger 11. and thus raise the protector tongue 18, against the resistance of the
spring 12. and clear of the recess 19, in this manner keeping it up as long as
5 the shuttle is in the box.
In the other modification as illustrated by Figure 4. the spring 12. is not used,
and the finger 11. is connected to the swell 7, by the bolt and nut 20, its elasticity
being taken advantage of in determining the position of the protector.
Some of the advantages gained by adopting swells of the type shewn are:-
0 No fulcrum pin is required as for ordinary swells. It is not necessary to use the
martingale strap, as an equable resistance is offered to the reception of the shuttle,
due to the elasticity of the swell.
In existing looms frequent breakages occur, when "chapping off," because of
the rigidity of the swell and the parts in connection therewith, whereas with my
15 elastic swell, breakages due to such a cause cannot possibly happen.
Having now particularly described and ascertained the nature of my said
invention and the system, mode or manner in or under which the same is or may
be used, or practically carried into effect, and what I consider to be novel and

page_text: original, and therefore claim as the invention secured to me by the hereinbefore in
part recited Letters Patent is :-
In looms for weaving textile fabrics.
(1) The improved system, mode, or manner in or under which the same is or
may be used, or practically carried into effect, as hereinbefore described and shewn
in the accompanying drawings.
(2) The use of elastic swells substantially as hereinbefore described and
illustrated in the accompanying drawings.
(3) The system adopted in the construction and arrangement of parts as
hereinbefore described and illustrated by Figure 4.
(4) The system as described by which the use of the martingale is dispensed with.
(5) Dispensing with the fulcrum pin as used in existing systems, and substituting
the spring joint or fulcrum 21.
Dated this 6th day of February 1893.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.