Improvements in Stop Motions for Looms.
Year: 1891

page_text: Date of Application, 17th Oct., 1891-Accepted, 19th Dec., 1891
COMPLETE SPECIFICATION.
[Communicated from abroad by FRANCOIS MAXIMILIAN JOSEPH GRENIER, &
citizen of the Dominion of Canada, and a resident of the City and County of
Providence, State of Rhode Island, United States of America, Weaver.]
Improvements in Stop Motions for Looms.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings in the County of Middlesex, 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 looms for fancy weaving, in which two or more shuttles
are used.
It is a common accident in the use of such looms for the shuttles to come into
collision and when such a collision occurs, the shuttles fly off' and break the yarn, or
are forced by the lay so as to break the warps and thereby damage the fabric and
occasion great loss.
The present invention is intended to prevent such an accident and to auto-
matically stop the loom when such danger is imminent. It consists of a combination
of devices which derive power from the swells of the shuttle-boxes. A spring-
pressed lever lies in contact with each of the said swells, and when actuated by the
outward movement of the swells, partially rotates a rod on which it is mounted,
which rod by an arm and pin acts upon a latch-upholding lever. When both
swells open at the same time, as a result of the pressure of shuttles in opposite
boxes in line with the shuttle race of the lay, the latch is no longer supported and
falls by its gravity upon the projection of a sliding plate, which is connected
movably with the breast-pin of the loom and the slide plate, when drawn by the
latch, operates a rod by which the driving belt of the loom is shifted from the fast
to the loose pulley. At the same time the draft on the latch, which is hinged to n
holding block, causes said block to be drawn out from under a lever of another rod
in operative connection with daggers and thus causes the daggers to rise into
position to prevent the lay of the loom from moving completely forward to the
breast-beam in the succeeding beat of the lay.
In the accompanying drawings
Figure 1 is a view partly in side elevation and partly in section of enough of a
power loom to show the position of my improved attachment.
Figure 2 is a top plan of the lay and the portions of my device which are
attached thereto.
Figure 3 is a front elevation of the same.
Figure 4 is an end view of the same, the shuttle boxes being shown in vertical
cross section on line o o of Figure 3.
Figure 5 is a view in cross section on line wow of Figure 2.
Figure 6 is a view in cross section on line x x of Figure 2.
Figure 7 is a plan of the latch apparatus and its connections.
Figure 8 is a view, partly in side elevation and partly in cross section on line c c
of Figure 7.
Figure 9 is a plan of the catch slide and its connected parts.
Figure 10 is a side elevation of the same.
Figure 11 is a plan of the bed piece of Figure 9.
Figure 12 is a cross section of the same on line 6b of Figure 11.
Figure 13 is a plan of the slide.
Figure 14 is a side elevation of the same.
Figure 15 in wan of the domand

page_text: Figure 16 is a front elevation of a modified form of my invention and is shown
partly broken away and partly in section.
Figures 17 and 18 are respectively front and side elevations of the devices
adapted to partially rotate the shaft of the belt-shipper.
Figure 19 is a detail view illustrating how the rotation of the shipping shaft
shifts the belt from the fast to the loose pulley.
Figure 20 is a detail view of a portion of the latch mechanism.
at 2.
In Figure 1 I show a portion of a common power loom in side elevation and
section. The swinging frame called the lay is shown at 1 and the breast-beam
The warps are seen passing over the beam 2 to the cloth roll 3. The shuttle
boxes 4 are at the ends of the lay 1 and have swells or binders 5, as usual, hinged
at the outer ends of the boxes respectively as seen in Figures 2 and 3 and also
lips 6 at the inner ends, as shown in Figure 2. On the front side of the lay 1 is-a
rock-shaft or rod 7 which is mounted and rotatable in hangers 8, seen best in
Figure 3. Presser fingers 9 are fixed upon the rod 7 and by the normal action of
spiral springs 10, surrounding said rod, are forced toward the lay. The parts thus
far described are old and common, except that heretofore the fingers 9 have been
in direct contact with the swells 5.
On each side of the lay, a rod 11 is mounted and has partial rotation in
hangers 12, 12, on the front of the lay 1. A spiral spring 10¹ surrounds each
rod 11 and is attached as seen in Figure 3 one end being inserted in the lay and
the other end in said rod. At the outer end of the rod 11 is a presser 13. The
end of each of the fingers 9 is bent at a right angle and lies against one of the
pressers 13 to force it against the swell 5 of the adjacent shuttle-box in line with
the shuttle-race.
At the inner end of each rod 11 is attached an arm 14 from the end of which a
pin 15 extends at a right angle. The dagger 16 is carried by the lever 28 which is
loosely mounted upon the rod 11, but the parts co-operating with the dagger I will
describe later on.
The latch mechanism is shown enlarged in Figures 7 and 8 and consists of a
latch or faller 17 loosely hinged, as seen at 18 to a block 19. This block is
supported on each side at its bottom by a pin or pivot 51, (see Figure 8) which
passes into the supports or hangers 23. The latch 17, has a cross pin 20 attached
on top and it thereby rests upon levers 21 on each side. The levers 21 are pivoted
at 22 to the supports or hangers 23. The pins 15 of the arms 14 are in contact
with the rear upper surface of the levers 21 respectively.
A rod 24 is mounted and has partial rotation in the hangers 25 on the lay. It
has attached thereto the slotted or forked arms 26 and the let-off arm 27. The
free end of the arm 27 rests upon the top of the block 19.
These various arms are attached to the rods by proper clamps and set screws.
The dagger mechanism is shown in Figures 5 and 15 and consists of a dagger 16,
the upper and forward end of which is preferably made of steel. It is fastened
upon a lever 28, which turns upon the rod 11, said lever 28, being loosely mounted
on said rod 11. At the rear end of the lever 28 is a pin 29 extending at a right
angle (see Figure 15) and which passes through the slot of the forked arm 26. On
the rear of the breast-beam 2 and beneath the same are the dagger-stops 30, one of
which is shown in central section in Figure 5.
The belt-shifting mechanism is shown in Figures 9 to 14 and consists of a bed
piece 31 which by means of a projecting piece 32 upon its side is held upon a
bracket 321 and is adjustable horizontally thereon. This projecting portion 32 of
the bed piece 31 has a guide-way 320, shown in cross section in Figure 12 and in
dotted lines in Figure 11 along which it is movable upon the bracket 32¹ as
indicated in dotted lines in Figures 9 and 11 and when adjusted by such movement
in the proper position is held there immovably by the set screw 52, which passes
through a slot 322 in said projection 32 and is adapted to engage in the bracket 321
in such a manner as to prevent displacement. The bed piece 31 has a longitudinal
J

page_text: central slot 33 and on each side a fixed cam 34 Figure 12 shows the construction as
seen on section line b, b of Figure 11 and Figure 10 shows the bed piece 31 as seen
on section line a, a of Figure 11. The bed piece 31 has also ear pieces 35
extending downward from its under side on each end (see Figure 10) and a rod 36
extends from one end to the other.
The bracket 32 has an upright portion 37, which is vertically adjustable upon
the back of the breast-beam 2 (see Figure 1) being longitudinally slotted and
secured in the proper position in a guideway 53 by a set screw 54.
The slide 38 is adapted to work in guideways 38¹ formed in the bed piece 31,
(see Figure 12) and has an ear piece 39 on its underside (see Figure 10) which
passes through the slot 33 of the bed piece 31. A spiral spring 40, surrounding
the rod 36, has its ends bearing against the front ear pieces 35 of the bed piece 31
and against the ear piece 39 of the slide 38. The slide 38 also has on its top
surface a catch 41 and at one side a stem 42. A bell-crank lever 43 is pivoted
at 44 to the upright portion 37 of the bracket and is bent at its upper end, as seen
at 45 (Figure 9) and has an elongated loop 46 at its lower end (Figure 10): The
stem 42 of the slide 38 enters said loop.
The shaft 47 is the usual shaft for shifting the driving belt from the fast to the
loose pulley and vice versa. It has attached to it the lever arm 48. Spiral springs 49
(Figure 2) engage with the rod 24 to depress, when free, the slotted arm 26,
as hereinafter specified. The handle of the belt shipper is shown at 50 in
Figure 16.
Having thus described all the parts of the device, I will
operation.
now explain their
The shuttle boxes are arranged above each other at each end of the lay in the
usual manner and rise and fall, as hitherto. All the power for operating my device
is derived from the swells or shuttle-binders 5 of the shuttle-boxes 4. As the shuttle
is driven in or out of the box of the action of the picker, it crowds outwardly the
shuttle-binder of said box. The pressure of the springs 10, 101, normally keep the
binders closed by means of the pressers 9, 13. When the binder or swell is pressed
outwardly by the passage of the shuttle, it moves the presser 13 toward the front
and thus partially rotates the rod 11. The arm 14 is thus raised (see Figures 7
and 8) and the pin 15 rises with it.
So long as the swells operate alternately, as they ought, there is no effect
pro-
duced, other than that just described and the arms 14 alternately rise and fall. The
latch 17 remains in the same relative position, because it is always supported by
one or the other of the pins 15 of the arms 14, and when the lay swings to the
beam 2, the latch passes over the catch 41 of the slide 38 without engaging there-
with. While the shuttles are thus thrown in regular alternation, no accident can
occur, as the right swell and the left swell open in their proper turn. The collision
of the shuttles, which it is the purpose of my invention to prevent, is caused
whenever either box into which a shuttle is to be thrown is already occupied by a
shuttle, as when a box charged with a shuttle is brought into line with the race at
the end to which a shuttle is to be thrown, there then being shuttles in both boxes
at the same time in the line of the race. When both swells are thus opened, both
pressers 13 are pushed, both rods 11 are partially rotated and both arms 14 with
their pins 15 are elevated. The weight of the hook or latch 17 then causes it to
drop by means of its loose hinge 18 and the latch engages with the catch 41 of the
slide 38 as the lay 1 moves to the beam 2. Now as the lay 1 swings back the
catch 41 of the slide 38 is drawn by the latch 17. As the latch 17 draws back it
rides up the cams 34 until it clears the catch 41 by arriving at the top of the
cams 34.
This draft of the slide 38 compresses the spring 40 and at the same time by its
stem 42, which is within the loop 46 of the lever 43, causes said lever to turn on
its pivot 44. The upper bent portion 45 of the lever 43 is thus depressed and bears
down upon
the arm 48 of the shaft 47 thereby rotating said shaft and shifting the

page_text: belt from the fast to the loose pulley, as usual, thus disconnecting the motive power
of the loom.
Simultaneous with this movement is the operation by which the daggers 16 are
raised into position to engage with the stops 30. This is effected in the following
manner. When the shuttle binders 5 of the shuttle-boxes 4 in line with the shuttle
race are open on both ends of the lay 1 at the same time, they press outwardly
the levers 13 on both sides and thereby partially rotate both the rods 11 and
cause both the arms 14 and their pins 15 to rise. The latch 17 is now no longer
supported as before, by said arms 14, and pins 15, but it falls by its own gravity
and comes into engagement with the catch 41 of the slide 38, as hereinbefore
described.
The latch 17 (which moves with the lay 1, to which it is intermediately
connected, see Figures 2, 3 and 7) after falling into engagement with the catch 41
of the slide 38, draws said catch and thereby pulls forward the swinging block 19,
to which said latch is hinged at 18. The let-off arm 27, which until now has been
supported upon the block 19, slips off. This movement of the let-off arm is aided
and made more powerful by the action of the spiral springs 49 (Figure 2) which
are attached to and surround the rod 24, on which the let-off arm 27 is mounted.
The springs 49 thus partially rotates the rod 24 and the slotted arms 26, mounted
on the rod 24 (see Figures 5 and 15) are carried downward. The slotted arms 26
by this movement crowd down the pins 29 of the levers 28. The daggers 16 which
are rigidly attached to the levers 28 are thus raised and enter the stops 30 of the
beam 2, as the lay 1 moves toward the beam, thus stopping the loom. No such
result can occur as long as the binders of the shuttle-boxes are opened, first on one
side and then on the other, alternately, as they are, when the loom is working
properly, because, while thus alternating, that one of the binders which is closed
allows the arm 14 on the same side to sustain the latch 17 by means of the con-
nected mechanism and the latch 17 passes over the catch 41 without engagement
as the lay bends back and forth; but when both binders are opened at the same
time, both pressers 13 are crowded outwardly, both rods 11 are partially rotated,
both arms 14 with their pins 15 are raised, both levers 21 turn to let the latch 17
drop into engagement with the catch 41 of the slide 38, with the consequent
results herein before fully specified.
To start the loom again, the let-off arm 27 is raised by hand (which movement
causes the daggers 16 to descend out of engagement with the stops 30) and the
block 19 and latch 17 are returned to their first position by a spring 55, shown in
dotted lines in Figure 8 on the front side of the said block, and the arm 27 is
brought to its former support on said block. The shaft. 47 is operated by the
handle 50 to shift the belt from the loose to the fast pulley, as usual, and the loom
starts again.
It will be apparent from this explanation that the daggers 16, while the loom is
in proper operation, are depressed and pass under the beam 2, without engaging
with the stops 30, but when they rise, they engage with said stops in front.
The holding means for the shipper shaft and lever, as is apparent by Figures 9
and 10, consist of the spring 40, the bent lever 45 and the arm 48 of the shaft 47.
The expansion of the spiral spring 40 normally holds the parts in the position
shown in Figure 10, but when the spring 40. is compressed by the shaft of the
slide 38, as already explained, the bent lever 45 is moved downward and depresses
the arm 48 of the shaft 47 of the shipper, thereby sliding the driving belt of the
loom from the fast to the loose pulley, in the manner familiar to loom operatives.
In Figure 19 I have shown how the rotation of the shaft 47, which may be
caused either by the above described automatic mechanism or by the lever
handle 50, shifts the belt from the fast to the loose pulley; the said lever 50
being mounted upon the shipper shaft 47 and having its lower end in engagement
with one end of a centrally pivoted lever 99, the other end of which is connected
with the belt shipper in a well known manner.

page_text: In Figure 16 I show a modification of my device which consists in dividing the
rod 7, and providing it with all the attachments hereinbefore mentioned as in
connection with the rod 11. In this case the fingers 13 are mounted directly on
the rod 7. Such modified form is to be used in constructing new looms, but in
altering old looms, (which always have the rod 7 extending from side to side,)
I use the construction previously specified.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed as communicated to me
by my foreign correspondent I declare that what I claim is :-
First. The combination with a shipping lever, latching or holding means therefor,
the lay, the shuttle-boxes at opposite ends thereof and the shuttle-binders, of rock-
shafts or rods having bearings on the lay, an arm on the outer end of each of said
rock-shafts or rods adapted to bear against the adjacent shuttle-binders, an arm on
the inner end of each of said rock-shafts or rods, a faller or latch carried by the lay
and upheld by the arms last mentioned and devices intermediate of the faller or
latch and the shipping lever for disengaging the latter when the faller or latch is
permitted to descend, substantially as specified.
Second. The combination with a shipping lever and shaft, holding means
therefor, the lay, the shuttle-boxes at opposite ends thereof and the shuttle-binders,
of rock-shafts or rods having bearings on the lay, an arm on the outer end of each
of said rock shafts or rods adapted to bear against the shuttle-binders of the
adjacent boxes as they come into line with the shuttle race, an arm on the inner
end of each of said rock-shafts or rods, a faller latch carried by the lay and upheld
by the arms last mentioned, a movable slide suitably mounted and provided with a
ratchet catch and devices intermediate of said slide and the shipping lever and
shaft to disengage said shipping lever and shaft from said holding devices when the
ratchet slide is drawn by the faller latch substantially as specified.
Third. In stop mechanism for looms, the combination with the lay, the shuttle-
boxes, shuttle-binders and breast beam, of a pivoted latch, a swinging block on
which said latch is mounted rock-shafts on the lay, actuated by the binders and
provided with devices to uphold said latch, a slide movable on the breast-beam and
provided with a ratchet for engaging said latch, when the latter is permitted to
descend, daggers loosely mounted on said rock-shafts, a spring-actuated shaft
carried by the lay and having arms adapted to elevate the daggers when said shaft
is free to act and also having a let off arm, the free end of which is supported by
said swinging block, but is arranged to drop therefrom by the force of the spring
whenever said block is moved out of support by the engagement and movement of
said slide and latch, substantially as shown.
Fourth. The combination of the lay 1 the shuttle-boxes 4, the shuttle-binders 5,
the rods 7, 11, the springs 10, 10¹, the levers 9, 13, 14, 21, mounted as shown, the
latch 17 and the pins 15, 20, all arranged and operating substantially as described.
Fifth. The combination of the breast beam 2, the brackets 32' 37, the bed
piece 31 having the cams 34, the slide 38 having the catch 41 and stem 42, the
bell-crank lever 43 with loop 46 and bent end 45, the belt-shifting shaft 47 having
the arm 48, the lay the shuttle-boxes and shuttle-binders, the rods having bearings
on the lay, an arm at the outer end of each of said rods bearing against the
shuttle-binders, an arm on the inner end of each of said rods and a latch carried
by the lay and upheld through the arms last mentioned all arranged and operating
substantially as specified.
Sixth. The combination of the lay 1, the breast-beam 2, the shuttle-boxes 4, the
shuttle-binders 5, the rods 7, 11, 47, the levers 9, 13, 14, 21, 43, 48, mounted as
shown, the springs 10, 10', the latch 17, the pins 15, 20, the bracket 321, 37, the
bed-piece 31 having the cam 34 and the slide 38, having the catch 41 and stem 42
engageable with the loop 46 of said lever 43, substantially as specified.
Seventh. The combination of the lay 1, the breast-beam 2, the shuttle-boxes 4,

page_text: the shuttle binders 5, the rods 7, 11, 24, mounted as shown, the levers 9, 13, 14, 21,
26, 27, 28, the latch 17, the block 19, the pins 15, 20, 29, the springs 10, 10¹ 49, the
daggers 16 and the stops 30, substantially as specified.
Dated this 17th day of October 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.