Improvements in and connected with Stop Motions for Power Looms.
Year: 1892

page_text: Date of Application, 20th July, 1892
Complete Specification Left, 5th May, 1893-Accepted, 10th June, 1893
PROVISIONAL SPECIFICATION...
Improvements in and connected with Stop Motions for Power
Looms.
I, JOHN VICKERMAN, Longfords Minchinhampton near Stroud in the County
of Gloucestershire Cloth Designer do hereby declare the nature of this invention
to be as follows :-
A new or improved warp stop motion mechanism for stopping the loom when a
warp thread breaks also applicable when a peg (which is inserted in the lags for
making the different designs) is broken or when a headle frame cord is broken,
consisting
Firstly of suitable headles and headle frames.
Secondly of headle frame case.
Thirdly of a rocking frame.
This invention consists Firstly of suitable weighted headles and headle frames ;
the headle frames are so arranged as to give play for the headles and weights to
move loosely in any direction. These frames are provided with a suitable grove or
space along the top and bottom shaft or stave so as to shield and hold loosely but
intact in each headle frame the whole number of weighted headles which may be
required in each headle frame to weave the cloth required. These headles are
supported in the frames by a cross rod or wire provided across and at a suitable
distance from the top shaft or stave and is provided with another rod or wire at a
suitable distance from the bottom shaft or stave which may be used to draw down
the headles to their proper destination when the loom is making its full shed or
bosom for the shuttle to pass through between the warp threads. These headles
may be made of iron or any other kind of wire suitable or may be made of worsted
cotton or any other kind of headle band or thread with a suitable weight or lingo
attached to the bottom end of each headle. The wire headles are provided at the
top and bottom parts with a longer slot or loop than the ordinary wire headle and
at the top and above the top loop or slot of each of these headles is provided a
suitable long twist of wire so as to extend perpendicular and be held straight along
and in the groves or spaces provided in the top shafts or staves of the headle frame.
The weights or lingos are lodged loosely in and in line along the groves in the
bottom shafts or staves of the headle frames.
Secondly of a headle frame case which extends the whole length of the headle
frames and partly up and around the said headle frames, when in loom ready for
weaving. At the top part and across the headle frame case are provided thin rods
which will hereinafter be called shed rods. These rods are placed between each or
any of the headle frames as may be required according to the number of shafts or
headle frames required to weave the cloth, but if only two or four shafts or headle
frames are required, one thin shed rod at the front and one at the back will be
sufficient. These rods are so arranged that they support the low portions of the
warp in a suitable line with the slay board when the shed is opening for the shuttle
to pass through between the warp threads thus allowing the headle frames to go
the full distance so that the rod or wire that supports the headles will slide down
the slot or loop provided at the upper part of the headle and the lower rod or wire
provided at the lower part of the headle frame will travel down the lower slot or
loop provided at the lower part of the headle thus pulling down any headle or
headles which may have been held up partly by friction or by any of the warp
threads having become entangled with waste or any other obstruction below the
headle weights. Inside the headle frame case and sufficiently clear of the bottom
ends of the weights that are attached to the headles are provided cross wires
extending from one end to the other of and drawn tight at each end of the headle

page_text: frame case by screw pins; these wires may be placed any suitable distance from
each other and may be supported and held firm from between each end by cross
section bars provided with suitable holes to lodge the wire in. These bars have a
thin knife edge along the top line across the wires to act as guides for any of the
weights on the headles. that should drop down on to the edge of any of these cross
section bars. These cross section bars extend about three inches below the
cross wires which form section looms, it can be arranged for any number of
section looms from one to thirty as may be required according to the width
of the piece. To each of and in the section looms is provided a sliding
grate supported so as to be actuated near to the cross wires and in the easiest
manner possible. This grate may be supported and actuated on spindles secured in
brackets in front and back of the headle frame case or may be supported and
actuated on thin edged rails or on wheels or pulleys. To each of these sliding grates
is provided a thin flat arm about two inches wide and from eight to twelve inches
long as may be required. This arm is provided with an opening about midway
from each end and about three inches in length on one side or edge of the arm and
one and a half inches across the width way of the arm thus forming a recess similar
in shape to the letter V; this recess will be hereinafter called recess V.
Thirdly of a rocking frame extending along and from one end to the other of the
headle frame case. This rocking frame may be made from twelve to twenty-four
inches wide from the hinged side to the outer side as may be required to suit the
loom and may be hinged either above or below the line of section grates in such a
manner as to bring the outer side of the rocking frame in line with the section
sliding grates. This rocking frame is provided with two sets of levers one long
and the other short. The long levers are hinged at one end to the hinged side of
the rocking frame. The other end of each of these long levers extends through
and between suitable slots or groves provided on the outer edge of the rocking
frame opposite and in line with the flat arms on the sliding grates provided in the
section rooms; and the outer end of each long lever is lodged in the recess of the
flat arm.
The long levers will hereinafter be called section levers and the shorter
ones.
s signal levers. The signal levers are hinged about midway from each end on
to the rocking frame, one end of these signal levers is connected to the section
levers about midway from each end of the said section levers by suitable links or
chains. The other ends of the said signal levers extends to the hinged side
of the rocking frame and each is provided with a suitable pin or stud and
may be connected to a separate bell or lever. Each of these bells or levers
may be numbered according to the section or signal lever it is connected to. The
signal levers are connected at one end to the rocking frame by a spiral spring
in such a manner as to draw the said section levers sufficiently tiglit into their
respective V recesses provided in the thin flat arm connected to the sliding grates.
These section levers are each provided with two small pulleys or rollers fitted
loosely on and around the outer end of each lever. One of these pulleys is used to
steady the levers in the slots or groves provided on the outer side of the rocking
frame the other pulley is fitted around the lever and against the flat arm in
the recess thus causing the section lever to glide easily in and out of the V recess.
At the outer side of the rocking frame is provided a knocking off rod extending
along and from one end to the other of the said rocking frame supported and held
to the rocking frame by pulleys or levers and in and between each end on to
and attached to the knocking off rod is provided suitable projections so arranged
that the said projections will rest against the section levers. At or near each
end of this knocking off rod is provided suitable connecting rods and catches
connected to the setting on rod or strap guide. The rocking frame may be
actuated by excentric wheels or cranks connected to the loom or may connected
to and actuated by the going part or so called rock tree. As the rocking frame
is moved to and fro on its hinges the whole sliding grates will move to and
fro in the section rooms so long as the warp threads are whole or no obstacle falls
down between the cross wires into the sliding grates; but should a warp thread
J

page_text: break down or come loose or slack the headle will be pulled down by the weight
attached to the lower end of the headle causing the said weight to drop through
the cross wires into the sliding grate below thus stopping and holding fast the
said sliding grate and causing the section lever to slide out of the V recess on to
the edge or side of the flat arm provided on to and connected to the sliding grate
thus the section lever will move and the outer end of the section lever will move
the stop rod also moving the signal lever. The stop rod is so arranged that when
the. rocking frame is near its inward destination the one end of the stop rod will
come against the end of the rod connected to the setting on rod and will stop the
loom but should the stop rod move too late owing to the headle falling too late
into the sliding grate, a catch or sneck is provided so as to catch the knocking off
rod when the rocking frame has finished its inward destination; this catch is so
connected to the strap guide that when the rocking frame is making its outward
motion the knocking off rod being so secured to the rocking frame will pull a
connecting rod connected to the strap guide and stop the loom.
To avoid or overcome any burden this stop motion may add to the loom there
is provided four levers which are hinged at each end of each lever to the headle
frame case or any other suitable part of the loom in a line with the outer side of
the rocking frame and at a suitable distance from each end of the said frame.
Two of these levers each placed at a suitable distance from each end and connected
to the rocking frame for the front side and two in a similar manner for the back
side of the rocking frame the two at the front are coupled together at the front
side of the levers at a suitable distance past the hinge pin and part way along the.
lever by means of straps connected to a spiral spring and the two levers at the
back of the rocking frame are coupled together at the back of each lever so that
when the rocking frame is in a perpendicular position each pair of levers will be
in a line with cach other thus the spring will be equally balanced in power but.
should the rocking frame be moved backwards the springs at the back will have
power over the front springs; if the rocking frame be moved to the front the front
springs and levers will have power over the back springs. This kind of lever and
spring may be provided for each headle frame at and above the top of the headle
frames to counterbalance the weight of the headles should they be too heavy for the
jacquard, dobby, or tappet.
This stop motion is also applicable for stopping the loom should a peg (which is
inserted in the lags for making the different designs) be broken by providing
suitable levers or jacks one to each headle frame and hinged on a pin and secured
to the top rails of the loom; these levers are actuated by a second set of lags and
pegs. The lags are pegged so as to work the before mentioned levers in an opposite
direction to each corresponding headle frame. At one end of each of these levers
is provided suitable wires or rods and at the top part of the said wires or rods is
provided a slot or loop and connected each to its corresponding lever by a small
pin being passed through the lever and through the slot or loop provided on the
top part of the before mentioned wire or rod. These wires or rods are so arranged
as to pass through the slots or groves provided along the top and bottom rails of
the before mentioned headle frames and sufficiently long enough to reach through
the cross wires provided along the headle frame case and into one of the sliding
grates or into a small sliding grate which may be provided specially for this
motion. At a suitable distance from the top and bottom of each of the before
mentioned wires or rods is provided a notch or small collar and so arranged that
when the headle frame is raised by the jacquard or dobby the headle frame will
lift its corresponding wire or rod clear of the cross wires or grates provided on the
headle frame case and the before mentioned levers being worked in an opposite
direction to the headle frames will raise the corresponding wires of the downward
headle frames clear of the cross wires or grates but should a peg in the lag or lags
provided to weave the pattern be broken and not raise the headle frame the corre-
sponding wire or rod will drop through the cross wires and into the sliding grate
provided on the headle frame case and stop the loom. Or should a cord which is

page_text: provided to support the headle frame or frames be broken such headle frame will
not rise and its corresponding wire or rod will not be raised when the corresponding
lever provided at the top of the loom allows the wire or rod to go down thus such wire
or rod will pass through the before mentioned cross wires and into the sliding grates
provided on the headle frame case and stop the loom.
Dated this 18th day of July 1892.
COMPLETE SPECIFICATION.
Improvements in and connected with Stop Motions for Power
Looms.
1, JOHN VICKERMAN Longfords Minchinhampton near Stroud in the County of
Gloucestershire Cloth Designer, 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 stop motions for power looms, for indicating the section
of warp threads in which a thread is broken and at the same time stopping the
loom.
In order that my invention may be fully understood I will now refer to the
annexed drawings in which :-
Figure 1. is an end elevation showing my arrangement of stop motion.
Figure 2. is a front elevation.
Figure 3. detached view of mechanism for stopping loom and raising indicating
pointer.
Figure 4. view of headle.
Figure 5. view of headle frame showing headle supported.
Figure 6. rear elevation of pointers or signals in position.
Figure 7. plan of sliding grate.
Referring to Figure 1. a is the headle (shown in Fig. 5), through the eye e of
which the warp thread 6 passes. The shed rods d prevent the headle a, or weighted
end a¹ of same, from falling and engaging with a sliding grate e; by supporting the
headle owing to the warp thread resting on the shed rods d. Should a warp
tbread break then the headle a will drop the length of the loop fand by engaging
in the racks g, of the sliding grates e, stop the movement of same, through the
weighted end of headle a coming in contact with the cross rods or guides 9. The
sliding grates e of which there may be any convenient number are actuated as follows.
To each grate e, a T piece is attached by means of an arm or connecting rod 5 or the
like. These pieces are loosely pivoted on a rodj which is caused to rock backwards
and forwards by lever k, which is in turn attached to another rocking lever l,
pivoted on a rod running the length of the machine, motion being communicated
thereto through the lever m, which is in connection with the driving gear of the
loom through the medium of rod n. The T pieces are connected from their two
arms by cords or chains o, to arm p, pivoted to the frame at and carrying the
signal lever or pointer sliding in guide pieces s. This signal lever or pointer r
has teeth or racks on same and is for the purpose of indicating to the operator
the section in which the warp thread is broken. The pivoted end of this arm p is
bent up and engages with a swinging frame u pivoted to the frame at v, and
attachel to the knocking off rod by lever w.
A second swinging frame pivoted to the main frame at a, is connected to the
rod y, by means of levers z.
Referring to Figure 4. The headle a, is formed of wire and has a loopf which
engages on a rod attached to the headle frame 1, shown in Figure 5; u² is a pro-
longation which slides between the bars 8 & S¹ & prevents the headles a getting
over one another on the rod 9. c is the eye through which the warp thread passes.

page_text: When the warp thread 6 rests upon the shed rods d the headle frame 1 & rod 9 can
move down or have play; the length of the loop f
The action is as follows:-When a warp thread & breaks, the headle a & weighted
end a falls or drops down between the guide rods 2 and into the sliding grate e,
thus stopping same and one or other arm of the T piece h raises the pointer r,
owing to the continued movement of the rocking bar j; the other or bent end of
the arm p, at the same time moves the frame u in the direction of the arrow. 1,
which stops the loom through the medium of the rod or lever w, which operates
any convenient form of stopping mechanism. When the loom is again started
the second swinging frame is moved in the direction of the arrow 2 through
the movement of the swinging frame, to which it is attached or connected,
by the small arm 3, being moved when the frame is returned to its initial
position and thus withdrawing the rod from the ratchet teeth 12 on the
pointer and allowing the pointer to drop. The sliding grates e and pointers are
so weighted with relation to each other that so long as no impediment is offered to
the movement of the grates, the weight of the pointers keep them down, or from
rising; but whenever the top end 4 of the T piece is prevented from rocking, one
or other of the arms 6 raise the pointers through the medium of the cords or
chains o, & lever p, owing to the continued movement of the rocking bar j, until
this is stopped through the movement of the frame stopping the loom. The
sliding grates e, slide on suitable bearings.
2°
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 :-
1. The combined construction and arrangement of the various parts as herein
illustrated and described for the purpose set forth.
2. In stop motions for power looms; headles a formed from wire or the like
having an elongated loop for supporting same on the headle frame and to give play to
the headle frame to lower while the headles are held still by the shed rods, with an
eyelet for the passage of the warp thread; a weighted end, and a projecting portion
or prolongation beyond the loop, to prevent the headles getting over each other on
the rod of the headle frame. Substantially as described and illustrated herein and
for the purpose set forth.
•
3. In stop motions for power looms'; one or more sliding grates, operated by one
or more rocking T pieces, said T pieces being loosely pivoted to a rocking bar or
rod operated by driving mechanism of the loom and connected by chains or cords
at their forked ends to the arm carrying the pointer and at the other end to the
sliding grates, said arms carrying the pointers actuating a primary swinging frame
connected to the knocking off or stopping rod, said pointers having teeth engaging
on a rod connected to a second swinging frame operated by the knocking off or
primary swinging frame substantially as described.
4. In stop motions for power looms constructed substantially as described and
having shed rods d adapted for supporting and keeping clear of the sliding grates
the weighted ends of the headles a, by means of warp threads as shown in the
accompanying drawings.
5. In stop motions for power looms constructed substantially as herein described,
signals or pointers showing the operator which section has caused the stoppage of
the loom.
6. In stop motions for power looms, operating the stop part or motion w, through
the medium of the weighted end of the headle a or the like.
ינית
1
1000
E. EATON,
Agent for John Vickerman.