Improved Shuttle Guard for Power Looms.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Shuttle Guard for Power Looms.
I, HENRY DAWSON, of 105, West Brook Street, Bolton, in the County of Lan-
caster, Weaving Overlooker, do hereby declare the nature of this invention
to be as follows, that is to say:
-
It relates to an improved formation or construction of shuttle-guard for power
looms whereby the shuttles in said looms are prevented from leaving their proper
paths to the detriment and danger of those in proximity with them."
In accordance with my invention I make use of the well known style of round
iron or wire or other suitable shape of metal strip mounted in front of the hand-
rail or hand-tree to extend over the shuttle-race, however instead of having said
bar of metal extending straight from one end to the other I form it of a wavy or
zig-zag shape and I further extend its outer ends so that I am enabled to end
or fold them to form a shield in suitable proximity with the shuttle box on each
side of the loom.
By forming the bar as above described it affords a better obstruction to the
shuttle, should same be thrown out of its path against it by reason of presenting
a more uneven surface for said shuttle to strike against.
The bar formed as described may be either securely fixed to the hand-tree or
it may be hinged thereon so that when desired the weaver might turn it up out
of the way to afford access to the warp threads as will be understood, and when
thus hinged I form a certain part of it to reach into contact with the weft fork
on, the loom at such times as it is turned up and the lay brought to the front. by
which means provided the weaver has thus turned it up and then started the loom
without turning it down, immediately the lay reaches its front position it brings
the prepared end of the guard into contact with the weft fork, causing same to
engage with its lever and so arrest the motion of the loom. This arrangement of
the bar may be used as means for arresting the motion of the loom by the weaver
raising it whenever desired.
By forming the bar of a wavy or zig-zag shape it will cover more of the shuttle
race and yet allow as much freedom as any single-bar protector.
To further add to the efficiency of the guard formed as described, those parts
of it which extend further over the shuttle race than the others, I make to extend
downward and so shield said race to a certain extent laterally.
To thin
iend of
انسل
1000
HENRY DAWSON,
Per Samuel Hey,
Agent.

page_text: I, HENRY DAWSON, of 105, Westbrook Street, Bolton, in the County of Lan-
caster, Weaving Overlooker, 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, that is to say;
-
It relates to an improved formation or construction of shuttle-guard for power
looms whereby the shuttles in said looms are prevented from leaving their proper
paths to the detriment and danger of the persons who are in proximity with them.
In order that my said invention may be readily understood, I have nereunto
appended a sheet of drawings illustrative thereof, to which, by figures and letters,
reference is made in the following description.
Fig. 1 is a front elevation of a porton of the lay and handrail of a loom having
my improved parts secured thereon.
Fig. 2 is a view of the parts shown by Fig. 1 as seen from above.
Fig. 3 is a sectional end elevation also of parts shown by Fig. 1 and other
parts in connection therewith.
:
Fig. 4 is a perspective view to illustrate more clearly the actions of certain of
the parts.
Figs. 5 and 6 are drawings in detail hereinafter referred to.
In carrying my invention into effect I make use of the well known style of
round iron or other suitable shape of metal strip a mounted in front of the hand-
rail 6 to extend over the shuttle race, however instead of having said bar a extend-
ing straight from one end to the other I form it of a wavy or rig-zag shape as
shown, and I further extend its outer ends so that I am enabled to bend or fold
them or otherwise secure parts to them to form a shield ee in suitable proximity
with the shuttle box d d on each side of the loom, which will arrest the flight
of the shuttle somewhat as shown by Fig. 4. This shield may be put on a straight
bar whether such is mounted to swivel in bearings or is rigidly fixed, in which
latter case I have the shield to swivel on the bar so that it may be turned up
out of the way whenever desired.
By forming the bar a as above described it affords better obstruction to the
shuttle should same be thrown out of its path against it, for the reason that
said bar a presents a more uneven surface for said shuttle f to strike against.
The bar formed as described, is hinged to the handrail by being mounted
upon the bearings as illustrated, this latter arrangement being preferably
followed since it enables the weaver to turn or move the bar a up out of the
position shown in full lines into the position shown in broken lines Fig. 3, in
which latter position it does not interfere with the free access to the warp threads
for purposes well known, while by being thus hinged I am enabled to secure a
projecting piece h upon it in such a manner that when the bar a is in its operating
position said piece h is not brought by the movements of the lay k into contact
with any part of the loom, but should the weaver move the bar a into the position
shown by broken lines Fig. 3 and fail (by thoughtlessness or otherwise) to turn
it down again prior to starting the loom, when such loom is started the lay k on
advancing to beat in the weft will bring the projection h into contact with a
laterally projecting piece m¹ on the weft fork m to cause this latter to engage
with its draw hook (or weft hammer) as shown in broken lines Fig. 3 and so
immediately re-arrest the motion of said loom, thus it will be impossible for the
loom to throw the shuttle unless the bar a is in position for constraining it to follow
its proper path.

page_text: Or again I may bring a stop-piece s (see Fig. 6 which is a front view) to be
held by the shield c (or other part attached to the bar a) when the latter is in
its operating position, so that it will not come into contact with either the weft
fork m or any other stop-motion mechanism, but should said pieces (or its
equivalent) not be thus held, then its weighed end s¹ will cause it to move so that
it will (on the advancing of the lay k) strike one or other of any kind of stop-
piece that may be used and so arrest the motion of the loom. Said stop-piece
may be arranged to be in connection with the weft fork mechanism or it may be
used with any other well-known stop-motion mechanism.
By forming the bar a of the shape described it will cover more of the shuttle
race than will a single bar protector and yet it will allow as much freedom for
the weaver's actions as does this latter.
To further add to the efficiency of the bar a formed as described the parts a
of it which extend over the shuttle race may be bent downward (somewhat as
shown by Fig. 5) and so shield said race to a certain extent in a lateral direction.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
1. Shuttle guards for power looms constructed and arranged to operate sub-
stantially as herein specified.
2. A shuttle guard of the formation or shape described the same being carried
by hinged bearings secured to the handrail of a loom and having shields mounted
at or near its outer ends substantially as herein specified.
3. A shuttle guard having shields ce the same being constructed and arranged
to operate substantially as set forth.
Dated this 18th day of January 1899.