Improvements in or relating to Shuttle Checking Motions . of Looms.
Year: 1893

page_text: Date of Application, 7th Jan., 1893
Complete Specification Left, 31st Aug., 1893-Accepted, 7th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to Shuttle Checking Motions
.
of Looms.
I, GEORGE LITTLEWOOD of 90 Yews Hill, Lockwood near Huddersfield, in
the County of York, Loom Tuner, do hereby declare the nature of this invention
to be as follows:-
This invention of improvement in shuttle checking motion has for its object the
prevention of the trouble and breakages arising from the pickers being drawn into
the boxes when the operator or weaver is performing the operation of what is
known as picking out.
Now according to this (my invention), I affix a bracket to the breast beam of a
loom in any suitable position, and mounted on the said bracket is a catch-lever
which under certain conditions engages with a sliding or moveable bracket, to
which bracket the checking straps are attached.
I also provide an attachment having a projecting finger upon it which attachment
is secured in a suitable position on the setting-ou-rod; this finger when in position
engages with, and depresses the outer end of the catch lever, thus liberating and
releasing the moveable bracket, and consequently the checking straps and pickers
or picking sticks which now remain inoperative until such times as the loom is again
set in motion. When the loom is set in motion the projecting finger attached to
the setting-on-rod is by this action removed from the catch lever; this lever then
engages with the moveable bracket when the latter is brought into position by the
movement of the lathe and the shuttle checking motion is then again - brought
into play.
Dated this 5th day of January 1893
GEORGE LITTLEWOOD.
COMPLETE SPECIFICATION.
Improvements in or relating to Shuttle Checking Motions
of Looms.
I, GEORGE LITTLEWOOD, of 90, Yews Hill, Lockwood, near Huddersfield, Power
Loom Tuner, 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 refers to mechanism for disengaging the shuttle checking motions
in looms for weaving, and has for its object the prevention of breakages and trouble
arising from the action of the checking motion when the weaver is performing the
66
or
operation of what is known as "picking out shedding back," to find a broken
pick.
The checking motions most commonly used consist of straps or cords which are
made secure at one end to the breast beam or other suitable stationary part of the
loom, then passed around pulleys carried by a bracket secured to the "lathe "
going part” and attached at their opposite ends to the picking sticks at each side
or "going part
of the loom. The backward or return movement of the "lathe
increases the angle or distance between the pulleys and the picking sticks and
consequently the latter are drawn forward a short distance by the straps so as to
When
advance the pickers into the boxes to meet and check the incoming shuttle.
weaving is discontinued and the loom is at the back centre, unless the checking
'
"
or
"

page_text: straps are disconnected the pickers and picking sticks are liable to be broken and
otherwise damaged through being drawn into the boxes.
My invention is intended to automatically disengage the checking motion on the
stoppage of the loom or when required, and for this purpose I affix to the breast
beam of the loom á bracket carrying a stud upon which is mounted a catch or
disengaging lever adapted to engage with a sliding bracket to which the checking
straps are attached. I also provide an attachment having a projecting finger upon
it which attachment is secured in a suitable position on the setting-on rod. This
finger when in position engages with and depresses the outer end of the catch lever
thus liberating and releasing the movable bracket and consequently the checking
straps and pickers or picking sticks which now remain inoperative until such times
as the loom is again set in motion. When the loom is set in motion the projecting
finger attached to the setting-on rod is by this action removed from the catch lever.
This lever then engages with the movable bracket when the latter is brought into
position by the movement of the lathe and the shuttle checking motion is again
brought into play.
In order that my invention may be more fully understood, I herein make reference
to the accompanying drawings, wherein
Fig. 1 is side elevation of my improved disengaging mechanism shewing the
parts locked.
Fig. 2 is plan of same.
Fig. 3 is side elevation partly in section, shewing position of the parts when
released to disengage the shuttle checking motion.
Fig. 4 is front elevation of Fig. 1.
Fig. 5 is side elevation and Fig. 6 front elevation of a modified construction of
the disengaging mechanism more particularly adapted for the Hollingworth and
Knowle's loom.
In the drawings a represents the breast beam of a loom to the inner side of
which and in any suitable position thereon, is bolted a bracket b in which is
journalled a pin or stude having a double ended leverd mounted thereon. One end
of the said lever d is provided with a hook or catch e and the opposite end projects.
through an opening in the bracket band is adapted to be depressed by a finger f
mounted on the ordinary setting-on rod g of the loom. To the base of the bracket b
is secured an arm h provided longitudinally with a slot or opening i into which
enters a tongue or rib k¹ projecting from the underside of a movable bracket k
which is adapted to slide backwards and forwards on the arm and is held in
contact therewith and prevented from being displaced by a plate k² secured by set
screws to the tongue or rib k¹. The said sliding bracket k is formed at its
forward end with a corresponding opposing catch or surface to the hook or
and is provided with or carries a pin or stud m to which are secured the
ends of the checking straps n, n', which pass around the pulleys carried by the
going part and are attached to the picking sticks at each side of the loom in'
the same manner as heretofore.
catch
e,
When the loom is set in motion the lathe or "going part" as it beats up causes
the bracket to be slided into the position shewn in Fig. 1, the catch e riding over
the inclined plane formed on the upper side of the bracket and engaging with the
end thereof, whereby said bracket is locked or firmly held close up to the breast
beam.
When thus locked, the checking straps are caused to act on the picking sticks by
the movement of the slay in precisely the same way as at present, but immediately
the weaver oscillates the setting-on rod g to stop the loom the finger f depresses the
outer end of the lever d and raises the catch e clear of the sliding bracket which is
thereupon drawn forward to the end of the slotted arm h (as shewn in Fig. 3)
by the picking sticks which, as is well known are drawn clear of the boxes by
strong springs. The stop piece limits the movement of the disengaging lever d.
The movement of the sliding bracket to the position shewn in Fig. 3 slackens
the straps n, n', and thus disengages the checking motion. When the loom is

page_text: again set in motion the finger is moved away from the disengaging lever d which
is thereupon free to engage with the sliding bracket when the latter is slided up
to the breast beam by the movement of the slay or " going part" and thus bring
the checking motion into action.
In Figs. 5 and 6 the parts are similar to those before described though some-
what different in construction and arrangement and occupying less room, the
arrangements here shewn being more particularly intended for the Hollingworth and
Knowle's looms or to other descriptions of looms where the space under the breast
beam is limited.
In Figs. 5 and 6 an angular bar takes the place of the slotted arm and the
sliding bracket k is bored or cast with a corresponding opening so as to slide
thereon.
The catch or disengaging lever d is mounted on a stud e projecting from one side
of the bracket band is adapted to ride over and engage with the forward end of the
inclined plane k³ on the side of the bracket k. The finger on the setting-on rods
acts upon the part d' of the lever d to liberate the sliding bracket k as in the
previous case.
By the means herein set forth the shuttle checking motion is disengaged auto-
matically on the stopping of the loom and breakages and trouble arising from the
pickers and picking sticks entering the boxes when the weaver is "picking out
shedding back are thereby avoided.
66
"
"
or
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
Firstly. The combination, in looms for weaving, of the finger f disengaging
lever d sliding bracket k, and slotted arın h for disengaging the shuttle checking
motions substantially as herein shewn and described.
Secondly. The mechanism for disengaging the shuttle checking motions of looms
for weaving constructed and arranged substantially as herein shewn and described
and operated in the manner set forth.
Dated this 20th day of Avoust 1893
TASKER & CROSSLEY,
Huddersfield, Agents.