Improvements in Apparatus for Checking the Shuttles employed in Looms for Weaving.
Year: 1891

page_text: Date of Application, 19th Aug., 1891
Complete Specification Left, 19th May, 1892-Accepted, 25th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Checking the Shuttles employed in
Looms for Weaving.
I, JOHN DANIEL GARSIDE, of Gatehead, Marsden, near Huddersfield,
Yorkshire, Power Loom Tuner, do hereby declare the nature of this invention to
be as follows
This invention has reference to looms for weaving and consists in apparatus for
operating the picking sticks so as to cause them to advance and meet the shuttles
as they enter the shuttle boxes, by which means concussion of the parts is
minimised.
In order to carry out my invention I employ a short lever arm provided with a
stud which is or may be capable of adjustment, such said lever arm being mounted
upon the crank shaft of the loom. Pivotted upon a stud secured to a suitable part
of the loom frame is a lever, preferably bent, to one end of which are connected two
cords, chains, or straps, which pass over separate pulleys and are attached to the
picking sticks on the right and left hand side of the loom respectively. The
opposite end of the said lever extends beyond the stud on the lever arm and its
position is such that at every revolution of the crank shaft, the stud on the lever
arm strikes the lever which is thereby oscillated or moved upon its fulcrum to an
extent sufficient to draw down the cords, chains, or straps and cause the picking
sticks to advance a little distance into the shuttle boxes to meet the incoming
shuttle.
The speed of the shuttle is in this manner checked and its stoppage made more
gradual whereby violent concussion of the parts is avoided.
When the loom is stopped for winding back, or other similar purpose, the lever
assumes a position out of reach of the stud on the lever arm and consequently there
is no obstruction or impediment to the movement of the parts and the picking
sticks when not operated to send the shuttle across the loom, are kept clear of the
boxes.
The apparatus above described is simple, positive in action and can be easily
applied to existing looms; if necessary similar lever arms and levers can be applied
to both sides of the loom, but in most cases one set applied to one side of the loom
is sufficient for the purpose.
DL: 10h do of August 1891
TASKER & CROSSLEI,
Halifax and Huddersfield, Agents.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Checking the Shuttles employed in
Looms for Weaving.
I, JOHN DANIEL GARSIDE, of Gatehead, Marsden, near Huddersfield,
Yorkshire, 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 has reference to looms for weaving and consists in apparatus for
operating the picking sticks so as to cause them to move forward and advance the
pickers to meet the shuttles as they enter the shuttle boxes, by which means
concussion of the parts is minimised.
In carrying out my invention, I mount on the crank shaft of the loom a short

page_text: lever arm carrying a stud or wiper adapted to engage, at every revolution of the
crank shaft, with a suitably pivotted lever and oscillate the same, and by means of
connecting straps cords or chains, cause the picking sticks at each side of the loom
to advance and move the pickers forward into the shuttle boxes to meet the
incoming shuttle whose speed is in this manner checked and violent concussion
avoided.
Such being the nature and object of my invention, I will now describe the same
more fully and for this purpose have annexed a sheet of drawings illustrative
thereof.
Fig. 1 is perspective view of so much of a loom as is necessary to shew the
application thereto of my improvements for checking the shuttles.
Figs. 2, 3 and 4 are details of the parts hereinafter referred to.
Referring to Fig. 1, a indicates the framing of the loom, the crank shaft e the
slay board, the frame which supports the boxes (not shewn) e the picking stick,
f the picker and the spindle on which the picker is slided backwards and forwards
by the picking stick, all the aforesaid parts being arranged and operated in the
ordinary manner.
Mounted on the crank shaft is a lever arm to which is secured a wiper or
curved bracket i, adjustable on said lever arm. At k is a stud bolted to the frame a
or to a bracket, on which stud is pivotted a lever / having connected to one end
thereof two straps or cords m and n which are attached, the former to the picking
stick e at the left hand side of the loom, and the latter to the picking stick at the
opposite or right hand side of the loom, said straps respectively passing over
pulleys o and p journalled in the bracket bolted to the back of the slay or running
board e which are placed intermediate of the lever I and picking sticks and rotate
freely when the straps are pulled over them.
7'
The opposite end of the lever / occupies a position over the crank shaft and may rest
thereon, and it is adapted to be engaged by the wiper i as it is carried around by
the lever arm so that at every revolution of the crank shaft the lever / is oscillated
or rocked upon its fulcrum as indicated by the arrows, the descent of the opposite
end of the said lever drawing down the straps m, n which pull the picking sticks
forward a little distance whereby the pickers are advanced into the boxes and meet
the incoming shuttle, whose motion is thus checked or gradually arrested without
any concussion taking place, or violent impact of the parts. The wiper i is so
timed to act that by the time the shuttle touches the picker the said wiper is clear
of the lever and the picking sticks are free to return to their original positions
this being effected by the motion of the shuttle or by means of a spring.
The position of the wiper i shewn in Fig. 1 is that which it occupies when on the
point of operating the lever l.
The straps m and n are preferably made long enough to hang rather slack when
the lever is in its normal position so as to allow for a little play before moving the
picking sticks and to prevent any liability of the latter being accidentally drawn
forward whilst the boxes are changing and thereby causing damage. Instead of
the strap n extending across the loom to the picking stick at the opposite side, two
short straps are employed, one connected to the lever and the other to the picking
stick, and they are joined together by a rod or link s.
If necessary, a second lever arm and lever may be employed at the opposite side
of the loom so that the picking sticks may be actuated independently of each other
for the purpose of checking the shuttles.
Fig. 2 is a detail of the lever arm / and wiper i.
Fig. 3 shews the lever arm provided with a stud i instead of with a wiper or
curved bracket.
For the purpose of preventing breakage of the lever l or damage to the loom
in the event of the pin, which secures the straps to said lever, falling out or the
connection being otherwise severed, and allowing the said lever to turn round on its
pivot, I cast the lever with a curved or hooked end t, as shewn in Fig. 4, which
is sufficiently deep to allow for the oscillation of the lever to the required extent

page_text: without coming into contact with the underside of the crank shaft, but should the
disconnection above named take place, the hooked end of the said lever will abut
against the crank shaft and prevent further movement, or the same result may be
obtained by securing a stop piece in a suitable position so that should the lever !
move beyond the required limits it would come in contact with the stop piece and
be prevented from turning around on its pivot.
The lever arm his secured to the crank shaft b somewhat as shewn in the
drawings so that its position can be altered for the purpose of making the wiper or
stud act sooner or later on the pivotted lever as may be required.
The apparatus above described and shewn on the drawings is simple, positive in
action, easily applied to existing looms, and is quite independent of the mechanism
which operates the picking sticks to send the shuttles across the loom and in no
way interferes with the ordinary working of the said picking sticks.
Having now particularly described and ascertained the nature of my inven-
tion and the manner in which the same is to be carried into effect I declare that
what I claim is :-
In looms for weaving the shuttle checking apparatus comprising a lever arm
carrying a wiper or stud, a pivotted lever and connections between said lever and
the picking stick or sticks all arranged and operating in the manner and for the
purposes substantially as herein shewn and described.
Dated this 10th dex of Mox 1902
TASKER & CROSSLEY,
Huddersfield, Agents.