Improvements in Shuttle Guards for Weaving Looms.
Year: 1894

page_text: Date of Application, 23rd Jan., 1894
Complete Specification Left, 23rd Oct., 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in Shuttle Guards for Weaving Looms.
We, STANLEY DEWHIRST, Manufacturer, and JAMES ROBINSON, Manager,
both of Central Mills, Bradford, in the County of York, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in shuttle guards for weaving looms and
its object is to provide a guard of cheap and simple construction adapted to auto-
matically move into position when the loom is started and move out of the way
against the hand rail when the loom is stopped.
"
For this purpose we employ a metal rod of any suitable section to form the guard
but instead of pivoting or mounting it upon the hand rail we prefer to fix it to an
arm or lever at each end pivoted to the back of the batten or slay and projecting
over the top of the slay board between the ends of the reed and the shuttle boxes.
These arms or levers may be pivoted upon extensions of the pins connecting the
"swords to the "crank-arms" and they are connected together by a rod under the
batten so that one lever follows the movement of the other. This rod is continued
or an equivalent projection is provided to carry an incline or tappet adapted to be
engaged by a stud or projection upon the starting lever. The parts are so relatively
arranged that the guard normally lies in the working position but the movement of
the starting lever to stop the loom brings the stud thereon in contact with said
incline or tappet and by moving the latter raises the guard out of the way against
the hand rail. In a broad loom one or more guide pieces or rests may be fixed to
the hand rail to support the guard at an intermediate point or points.
Instead of being entirely automatic the guard may be arranged to be pushed out
of position by hand. In this case a spring is provided to restore the guard to the
working position and a catch or detent is employed to hold it out of position.
This catch or detent is so arranged that, immediately the loom is restarted, the
motion of the going part brings the catch against a finger or tappet adapted to
disengage the catch, and the shuttle guard, under the influence of said spring, at
once passes to its working position.
Dated this 22nd day of January 1894.
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
Improvements in Shuttle Guards for Weaving Looms.
We, STANLEY DEWHIRST, Manufacturer, and JAMES ROBINSON, Manager,
both of Central Mills, Bradford, in the County of York, 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 shuttle guards for weaving looms, and
its object is to provide a guard of cheap and simple construction adapted to auto-
matically move into position when the loom is started and move out of the way
against the hand rail when the loom is stopped.
For this purpose we employ a metal rod of any suitable section to form the guard
but instead of pivoting or mounting it upon the hand rail we prefer to fix it to an
arm or lever at each end pivoted to the back of the batten or slay and projecting
over the top of the slay board between the ends of the reed and the shuttle boxes.
"
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page_text: These arms or levers may be pivoted upon extensions of the pins connecting the
"swords" to the "crank-arms and they are connected together by a rod under
the batten so that one lever follows the movement of the other. This rod is
continued or an equivalent projection is provided to carry an incline or tappet
adapted to be engaged by a stud or projection upon the starting lever. The parts
are so relatively arranged that the guard normally lies in the working position but
the movement of the starting lever to stop the loom brings the stud thereon in contact
with said incline or tappet and by moving the latter raises the guard out of the way
against the hand rail. In a broad loom one or more guide pieces or rests may be
fixed to the hand rail to support the guard at an intermediate point or points.
Instead of being entirely automatic the guard may be arranged to be pushed out
of position by hand. In this case a spring is provided to restore the guard to the
working position and a catch or detent is employed to hold it out of position.
This catch or detent is so arranged that, immediately the loom is restarted, the
motion of the going part brings the catch against a finger or tappet adapted to
disengage the catch, and the shuttle guard, under the influence of said spring, at
once passes to its working position.
Reference is to be had to the accompanying sheet of drawings forming a part of
this Specification in which similar letters of reference indicate corresponding parts
in each of the figures.
Figure 1, represents a front elevation of such parts of a loom as are necessary to
illustrate the application of our improvements.
Figure 2, represents a plan view of the same.
Figure 3, represents a side view of the same.
Figures 4 and 5, respectively represent a side and front view on a larger scale of
such parts as are necessary to illustrate the modification in which the guard is
arranged to be pushed out of its working position by hand and to be automatically
restored to that position.
The levers A and A2 are pivoted on the extremities A³ of the pins B, B, connect-
ing the swords B2, B2 to the crank arms B3, B³. The levers A and A* have
adjustable arms A', bolted to them by the bolts a, which arms project forward
under the hand rail R at each end and have the guard rod C attached to their
extremities. The levers A and A' also have arms A projecting underneath the
bottom of the batten D which arms are connected together by the rod D. The
lever A has a further extension A' formed upon it carrying the cam or inclined
piece A arranged to be engaged by the stud E on the starting and stopping
lever E². This cam and stud are so relatively arranged that when the lever E is
moved in the direction of the arrow Figure 1, to stop the loom the stud raises the
cam thereby vibrating the levers A. and A2 and consequently moves the guard, from
its working position, more or less under the hand rail as represented by C Figure 3.
When the loom is re-started the weight of the levers A2 and A' and their connections
is such that the guard is at once returned to its working position.
One or more guide pieces or rests C* (Figures 1 and 4) may be fixed to the hand
rail to support the guard C.
In the modification shown in Figures 4 and 5 the catch H pivoted upon the
bracket J fixed upon the sword B is provided to engage the top of the lever A
when the guard is pushed back by hand and hold it in that position. The catch H
has a projection H³ at the rear upon which a swell H is formed and a stud H* fixed
to the loom frame F is provided in such a position in relation to said catch that
when the loom is re-started and the batten moves backwards the said stud engages
the swell H and by depressing it raises the catch and releases A thus leaving the
guard free to pass to its working position. The spiral spring S stretched between A'
and a stud B on the sword, as shown in Figure 3, is arranged to bring the guard
instantaneously back to its working position.
The upright arm of the lever A is cranked to the right (Figure 1) to clear the
weft fork grate G, and the upright arm A' is also cranked in the same direction so
as not to encroach upon the reed space.

page_text: 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 :
1. A shuttle guard mounted upon levers pivoted behind the reed and connected
together by a rod or bar, substantially as herein shown and described.
2. A shuttle guard mounted upon levers pivoted behind the reed suitably
connected together and provided with a cam or incline arranged to engage a stud
or projection upon the starting lever, substantially as herein shown and described.
3. A shuttle guard mounted upon levers pivoted behind the reed and suitably
connected together, in combination with a catch adapted to hold the guard out of
working position and be automatically released when the loom is restarted, sub-
stantially as herein shown and described.
Dated this 22nd day of October 1894
DRACUP & NOWELL,
Bradford, Agents.