Improvements relating to Looms for Weaving.
Year: 1887

page_text: Date of Application, 11th Jan., 1887
Complete Left, 4th Oct., 1887
Complete Accepted, 11th Feb., 1888
[Communicated from abroad by SAMUEL T. THOMAS and WINFIELD S. THOMAS, both
of Boston, Massachusetts, United States of America, Loom Manufacturers.]
Improvements relating to Looms for Weaving.
1.
HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings in the County of Middlesex, do hereby declare the nature of
this invention to be as follows:-
This invention relates :-
First. To improved drop weights or tumblers in combination with the pattern
chain, racks, geared sector cams, and harness lever of a positive open shed harness
motion.
Second. To improved shuttle motion whereby the shuttle is thrown with a uniformn
velocity without regard to the speed of the loom, with a mechanism to prevent the
shuttle being thrown unless there is an empty box opposite to receive it.
Third. To an improved drop shuttle box motion, whereby any box in the series can
be brought into the required position without fail.
Fourth. To improved take up ratchet and roll, in which the number of teeth in the
ratchet is the same as the number of picks per inch required to be woven.
Fifth. To improved positive or negative take-up motions and to a let-off motion.
The drop weights or tumblers are of two kinds, hung on rods at the front and back
of the upright racks or jacks and bearing against them, one of each kind to a rack;
those at the back have their weighted end half disked shape, the circular part being
pressed against the rack by a spiral spring on the back side; those at the front are
hung so that their weighted ends on one side bear against the fronts of the racks and
the other against the pattern chain; those at the back keep the racks pressed
forward all the time by the action of the spiral springs, unless pressed back by the
presence of screws or pins in the pattern chain bearing against the front drop
weights this action of the screws in the pattern chain against the front drop
weights moves the racks, whose upper ends have notches on the front and back, into
the path of the lifting bar which engages the notches in the racks and carries them
up if there is no screw in the pattern chain the action of the spiral springs press

page_text: the racks forward into the path of the depressing bar which engages the notches in
the racks and carries them down, and the lower ends of the racks are toothed to the
geared sector cam which operate the harness lever.
The pattern chain cylinder is driven through a series of gears from the crank shaft
and may be unclutched in order to turn it back if necessary. The lifting and
depressing bars are moved by a scroll cam on the end of the crank shaft, through two
right angled levers connected to two upright shafts to which the lifting and depressing
bars are attached.
The shuttle or picker motion is obtained as follows:
On the lower or cam shaft at a proper distance from the inside of the loom frame,
is keyed a side cam on which runs the roll of the shuttle arm or lever which is rigidly
fastened to the upper end of a sleeve turning loose on an upright shaft, at the lower
end of this shaft is another sleeve with a flange on its lower end in whose entire
circumference holes are drilled at equal distances apart, and between these two is an
intermediate sleeve, these three sleeves are all loose on the upright shaft, whose upper
and lower ends are supported in stands fixed to the loom girt or frame, around these
three sleeves is coiled a powerful steel spring one end of which is fixed to the lower
sleeve and the other to the shuttle arm on one end of which is the shuttle arm roll
bearing against the side cam, while the other end is connected by a suitable strap or
connection to the picker stick the lower sleeve is prevented from turning by a
projecting pin, in one of the holes in its flange, bearing against the side of the lower
stand and the tension on the spring can be regulated by changing this pin from hole
to hole according to the power required to throw the shuttle.
As the side cam on the lower shaft turns around, the roll on the shuttle arm moves
up the inclined plane on the cam, thereby winding up the spring, until the roll drops
square off which relieves the spring and its force is imparted through the shuttle arm
and connector to the picker which throws the shuttle. The force of the spring to
throw the shuttle does not depend upon the speed of the loom, for the velocity of the
shuttle would be the same, whether the loom runs 80 picks per minute or only 40,
in fact the loom may be run until the speed entirely stops and still continue to weave
and the shuttle be thrown with a uniform velocity.
To prevent the shuttle being thrown if there is a full box opposite, we use a rod
running along the front of the lay on one end of which a finger is rigidly fastened
and bears against the shuttle binder or swell, at the opposite end of the rod on the
other side of the loom an arm is fixed which is connected by a chain or cord with one
end of a lever the opposite end of which is notched and hangs directly over the front
end of the shuttle arm and this end of the notched lever is kept up out of the path of
the shuttle arm by a coiled spring around its central hub which also keeps the fingers
pressed against the shuttle binder, as long as the shuttle box is empty the notched
lever on the opposite side of the loom, is kept out of the path of the shuttle arm, but
if there is a shuttle in the box it throws out the shuttle binder which moves the finger
and through its rod and arm drops the end of the notched lever over the shuttle arm
and prevents its moving, consequently the shuttle will not be thrown.
The shuttle box motion :-
On the end of the lower shaft outside the loom frame, a cam is attached, which
moves a lever fulcrumed to a stand on the loom frame, in the path of the lower end
of this lever four horizontal slide pawls are allowed to project or not as may be
required, and are held back, from being moved by the lever, by wires engaging in
notches on the top of each slide pawl, the upper ends of these wires being lifted by
the presence of a screw in the pattern chain, the slide pawls are kept forced against
the ends of the wires by weighted bell crank levers, so that when a wire is lifted by
a screw in the pattern chain, that end of the slide pawl is thrown into the path of the
vibrating lever and its opposite end into the tooth of a ratchet; if one of the wires is
lifted it allows its slide pawl to be moved horizontally by the vibrating lever, the
opposite end of the pawl turns a ratchet fixed to the side of a gear which gives half a
revolution to a pinion geared into it, which pinion is keyed to a short shaft turning in
a stand attached to the outer end of the rocker shaft or pin; on the opposite end of

page_text: this short shaft a face plate is keyed on which is a stud to which one end of a chain is
attached which runs over a sheave on the under side of the shuttle box frame, the
other end of the chain being attached to a proportional lever on the shuttle, box rod,
the long side of the proportional lever is just twice the length of the short side, so that
a movement of the long side of the lever alone, would give one box, while a move-
ment of the short side alone would give two boxes and a movement of both sides
together in the same direction would give three boxes; there are two slide pawls,
two ratchets and gears, two pinions and two face plates with chains attached and
connected to each end of a proportional lever to each drop box of four shuttles;
the moving of a slide pawl by the presence of a screw in the pattern chain, moves the
ratchet one tooth and through its gear gives the pinion half a revolution and through
the chain attached to the face plate and thence to the long end of the proportional
lever brings up one box the other slide pawl remaining still by the absence of a screw
in the pattern chain, to bring up the next box both of the slide pawls must be moved
at the same time, the one connecting with the short end of the lever brings up two
boxes, while the one connecting with the long end of the lever moves the end of
the chain fastened to the face plate back to its original position bringing down or
substracting one box from the movement of the short end of the lever, thereby giving
the next box or third in the series; to bring up the fourth or last, move the slide
pawl connecting with the long end of the lever and hold the other slide pawl still,
any combination or movement in the series of boxes can be obtained by this
mechanism.
The other two slide pawls, with their ratchets, gears, pinions and face plates with
chains operate the drop box on the opposite side of the loom, by running the chains
across under the lay and thence to the proportional lever on the shuttle box rod.
The ratchets and gears are locked in position at the end of every forward move-
ment of the slide pawls by the end of a flat steel spring dropping into a space between
two teeth on the gears; when the slide pawls are allowed to drop back into position
for another forward movement, they raise the spring out of the space by an inclined
plane on the top of the slide pawl in contact with a stud or projection on the spring,
and it remains out until the forward movement is complete when it drops into another
space and locks the gear again.
For the take-up, we use a take-up roll whose circumference is turned to an exact
whole number of inches, and on one end of the take-up roll shaft a worm gear is fixed
with just as many teeth as there are inches in the circumference of the roll, so that
each tooth of the gear and also each inch of the circumference of the roll represents
an inch of woven fabric; running in the worm gear is a single worm on a short shaft
turning in a stand fixed to the loom frame, and at one end of this short shaft is
placed the take up ratchet with just as many teeth in its circumference as there are
picks to the inch in the fabric to be woven; one revolution of the ratchet moves the
worm gear one tooth which takes up one inch of the woven goods, the ratchet is
moved one tooth by a pawl attached to one end of a lever swinging on the hub of
the ratchet, the other end being raised on an inclined plane attached to the sword, by
every forward movement of the lay. This forms a positive iake up and the number
of teeth in the take-up ratchet, which can be readily exchanged, must be the same as
the number of picks per inch required in the woven fabric.
To convert this same mechanism into a negative take up, the inclined plane is
moved up on the sword, so as to bear on the top of the lever that operates the pawl,
and at the end of this lever a spiral spring is attached, the other end of the spring
being hooked to a threaded rod passing through a stand on the loom frame, with a
thumb nut on the rod to adjust the tension of the spring. The weight of the goods
woven is governed by the tension of the spring.
The let off is as follows:-
:-
On the yarn beam shaft a worm gear is attached, running in which is a worm on an
upright shaft supported in stands, bolted to the loom frame; on this upright shaft
a ratchet is attached on whose hub is a loose pawl plate on which swing two or
more pawls as may be required and this pawi plate is connected by an arm to a

page_text: perpendicular lever whose upper end is fulcrumed in a stand on the loom frame, and
to the upper end of this lever the whip roll is rigidly fastened; at a proper distance on
this lever one end of a rod is attached the other end passing loosely through a hole
in the sword with a nut on the end to regulate the length; every forward movement
of the sword moves the whip-roll lever by means of the rod, and through the arm
connected to the pawl plate actuates the ratchet, which through the worm and gear
on yarn beam shaft lets off the yarn; the requisite tension that is wanted on the yarn
is governed by an adjustable weight on a bell crank lever fulcrumed to a stand on the
frame one end of the lever bearing against the lower end of the whip roll lever.
The length of the rod attached to the whip-roll lever and passing through the sword
is so adjusted that when the lay strikes, it holds the whip-roll rigid.
This mechanism may be applied separately to two yarn beams on the same loom
and the tension of each governed independently.
n
1 1
D
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co. Patent Agents,
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 Firstly, to improved drop-weights or tumblers in combination
with the pattern chain, racks, geared sector cams, and harness lever of a positive open
shed harness motion.
Secondly. To improved shuttle motion, whereby the shuttle is thrown with a
uniform velocity, without regard to the speed of the foom, with a mechanism to prevent
a shuttle being thrown unless there is an empty box opposite to receive it.
Thirdly. To an improved drop shuttle box motion, whereby any box in the series
can be brought into the required position without fail.
Fourthly. To improved take up ratchet and roll, in which the number of teeth in
the ratchet is the same as the number of picks per inch required to be woven.
Fifthly. To improved positive or negative take up and negative let off motion.
Referring to the accompanying drawings-
Figure 1 represents a side view of a loom embodying my invention.
Figure 2 is a front view of the right hand end of the loom showing improvements.
Figure 3 is a hack view of the same end of the loom..
Figures 4, 5, 6 show the stop motion, Figure 4 being a section taken on line x, x,
of Fig. 5, Fig. 5 a section taken on line y, y, of Fig. 4, and Fig. 6 is a plan of Fig. 5.
Figs. 6 to 12 are detail views of various parts.
The drop weights or tumblers 12, and 13, arc of two kinds, hung on rods 18, 19, at
the front and back of the upright racks or jacks A, and bearing against them, one of
each kind to a rack; those at the back 12, are hung on the rod 18, and have their
weighted end half disked shape (see Fig. 7), the circular part being pressed against
the rack by a spiral spring 14, on the back side of each; these springs are supported
in a series of holes in a plate 15, the holes being the proper distance apart opposite
the back of each tumbler 12; those at the front are hung so that their weighted ends
on one side bear against the fronts of the racks A, and the other against the pattern
chains B; each of these tumblers 13 (see Figs. 7 and 8), consists of two parts 16, 17,
hung at their upper ends on the rod 19, and the parts that come in contact with the
pattern chain and rack are formed of a how shape with a catch 20, at the bottom to
prevent them being forced apart by the spring 21, held on studs in the bows. The
tumblers 12, at the back keep the racks pressed forward all the time by the action of
the spiral springs 14, unless pressed back by the presence of screws or pins b, in the
pattern chain bearing against the front drop weights; this action of the screws b, in
the pattern chain against the front drop weights 13, moves the racks A, whose upper
ends have notches a, on the front and back, into the path of the lifting bar D, which
engages the notches
in the racks and carries them up; if there is no screw in the
a,

page_text: pattern chain the action of the spiral springs press the racks A, forward into the path
of the depressing bar E, which engages the notches in the racks A, and carries them
down, and the lower ends of the racks A, are toothed to the geared sector cams F,
which operate the harness levers G. The pattern chain cylinder B2 is driven from
a scroll cam H, on the end of the crank shaft I, through bell crank lever J, the long
arm of which is connected to the lifting rod K, to which a collar k, is secured; pivoted
to the collar k, is a slotted bar L, that is connected to a bell crank lever M, by means
of a pin l, passing through the slot in the bar L, the bell crank 'M, fulcrumed to a
stud at m, and its upper end is pivoted to a pawl N, that engages with one of the
pins 62, on the pattern chain cylinder B². The operation of these parts is as follows:
As the crank shaft I, rotates the scroll cam H, imparts an up and down motion to the
lifting rod K, through bell crank J, the slot in the bar L, allows the rod K, to rise
without moving the bell crank M, until the bottom of the slot comes into contact with
the pin 7, when the bell crank M, is thrown up and the pawl N, pushed forward to
take hold of another of the pins 62, as the shaft I, continues to rotate the lifting rod K,
is drawn down and the pawl N, moves the pattern cylinder B2, one eighth of a revolu-
tion or the chain cylinder B², may be driven through a series of gears from the crank
shaft and may be unclutched in order to turn it back if necessary.
Both the lifting
and depressing bars D, and E, are moved by a scroll cam on the end of the crank
shaft, through two right angled levers connected to two upright shafts to which the
lifting and depressing bars are attached.
The shuttle or picking motion is obtained as follows: On the lower or cam shaft P,
at a proper distance from the inside of the loom frame, is keyed a side camp on which
runs the roll n, of the shuttle arm or lever Q, which is rigidly fastened to the upper
end of a sleeve q, turning loose on an upright shaft r, at the lower end of this shaft »,
is another sleeve 2 with a flange on its lower end in whose entire circumference holes
are drilled at equal distances apart, as shown and between these two sleeves 4, 7, is an
intermediate sleeve, these three sleeves are all loose on the upright shaft 7, whose
upper and lower ends are supported in stands fixed to the loom girt or frame, around
these three sleeves is coiled a powerful steel spring R, one end of which is fixed to the
lower sleeve 92, and the other to the shuttle arm on one end of which is the shuttle
arm roll n, bearing against the side cam p (see Figs. 1 and 9), while the other end is
connected by a suitable strap c or connector to the picker stick S; the lower sleeve q²,
is prevented from turning by a projecting pin d, passing through the lower stand and
into one of the holes in the Hange of the lower sleeve, and the tension on the spring R
can be regulated by changing this pin d from hole to hole according to the power
required to throw the shuttle. The camp (see Fig. 9) is an incline starting at 2 and
rises to its highest point 1, and then drops to its lowest point 2 as shown, this cam
makes one pick for every revolution of the shaft P, but if desired to make two picks
then the cam would have to be made double.
As the side cam p, on the lower shaft P, turns around, the roll n, on the shuttle
arm Q, moves up the inclined plane on the cam p, thereby winding up the spring R,
until the roll n, drops square off, which relieves the spring R, and its force is
imparted through the shuttle arm Q, and connector c, to the picker stick S, which
throws the shuttle. The force of the spring R, to throw the shuttle does not depend
upon the speed of the loom, for the velocity of the shuttle would be the same, whether
the loom runs eighty picks per minute or only forty, in fact the loom may be run
until the speed entirely stops and still continue to weave and the shuttle be thrown
with a uniform velocity.
To prevent the shuttle being thrown if there is a full box opposite, we use two rods T, T¹
(see Figs. 1, 2, 4 and 5) running along the front of the lay or lathe on one end of
each of the rods is a finger t, rigidly fastened thereto and bearing against the shuttle
binder or swell U, U; at the opposite ends of each of the rods T, T", and arm V, is
fixed which is connected by a chain or cord u, with one end of a lever W, fulcrumed
at or about its centre to the frame and connected at its other end by another chain or
cord v, to a latch lever X, the notched end of which hangs directly over the front end
of the shuttle arm Q, and this end of the notched lever is kept up out of the path of

page_text: the shuttle arm by a coiled spring Y, which also keeps the fingers t pressed against
the shuttle binder U. As long as the shuttle box is empty the notched lever X, on the
opposite side of the loom is kept out of the path of the shuttle arm Q, but if there is a
shuttle in the box it throws out the shuttle binder U, which moves out the finger t and
through its connections drops the end of the notched lever X, over the shuttle arm Q,
and prevents its moving, consequently the shuttle will not be thrown and the loom
will be stopped, as hereinafter described.
On the front of the lathe Z, is secured a metal casing e, the front of which extends
down some distance below the bottom of the lathe Z; in the casing e, is pivoted a
small block, through which slides a rod g, the upper end of which is bent at right
angles and to which is pivoted the needle h, the point i, acting as a fuicrum for the
needle to swing upon. The lower end of the bar y. rides up upon the face of an
inclined planej, when a shuttle is in its box; when the box is empty the
binder U, and consequently the finger t, moves inward and causes the lever s, on shaft T,
to move inward which pushes the rod y, out of the path of the incline plane j, as
shown in dotted lines in Fig. 5 the end of the levers, being bevelled off, for that purpose
(as shown in Fig. 6). In the lower end of the plate e, is formed a slot w, through
which slides a flat metal plate a, provided at its inner end with a hook a², and at its
outer end with a screw threaded rod y, which passes through an arm 3, fulcrummed
in a stand on the under side of the breast beam 4. The arm 3 bears against a lever 5,
secured to the rod 6 upon which is also secured the shipper arm 7, the upper end of
which is forked through, which fork the shipper handle 8 passes.
When the box which should be empty has a shuttle in it the binder U, is forced out
by the shuttle and consequently the finger t, is pressed outward and causes the lever s
on shaft T, to move outward away from rod g, which then stands perpendicular and in
the path of the inclined plane j, up which the end of the rod g passes as the latter is
moved back carrying with it the needle so that its straight end will be in the path
of the hook in the plate a and comes into contact with the same as the latter moves
back which causes the plate a to draw upon the arm 3, which coming into contact with
lever 5 on rod 6 causes the shipper arm 7 on said rod 6 to move the shipper handle 8
out of its notch, thereby causing the loom to stop.
In some cases if desired the lever 5 may be extended down and provided with a slot
for the rod y to pass through, in which case the arm 3, would be dispensed with.
The operation of this stop motion is as follows; when the shuttle is in the box
ready to be thrown the binder U, the finger t and levers are all out; which allows the
end of the rod g to be raised by riding up the incline; by the backward movement of
the lathe Z. As the rod g is raised the needle is also carried up until in the position
shown in full lines in Figure 5. As the shuttle leaves the box the filling forms a loop
round the needle h as shown in Figures 5 and 6 (9 representing the selvage point)
and tilts the needle as shown in dotted lines so as to be out of the path of the hook x2
on end of plate a, the shuttle being thrown before the needle h, in the backward motion
of the lathe, arrives at r².
When the shuttle has left the box the binder U, and finger t fall inward and
partly rotates the rod T, which carries the lever s inward, the end of which is free to
pass by the rod g when the latter is upon the incline by reason of a small bow formed
in the rod g at the point where the end of lever comes, and the rod y remains upon the
incline until the latter again comes forward when the rod g moving down the incline
comes in contact with the lever s and is thrown out on one side as shown in dotted
lines in Figure 5.
If the filling breaks or the shuttle is empty the needle h would not be tilted bui
remain perpendicular and as the lathe moves back the needle will come into contact
with the hook and draw upon the bar which draws the arm 3 against the lever 5,
and moves the shipper arm and shipper handle 8 and stops the loom.
When the shuttle box is empty the binder U finger t and levers are thrown in and
the lever moves the rod y to one side so that it will not come in contact with the
incline plane j: consequently the rod y and needle h, remain down the lower end of
the needle being formed with a bow which comes opposite the bar x, when needle is

page_text: down and the hook will not come into contact with the needle and will not stop the
loom.
Or the end of the bar
y,
21, is provided a spring 10, the tension of which is regulated
by a thumb screw 11; the object of this spring is to prevent any undue strain upon
the arm 3, and shipper handle 8.
The shuttle-box motion. On the end of the lower or cam shaft P, outside the loom
frame, a cam 22, is attached, which moves a bell crank lever 23, fulcrumed on a
stud 24, to a stand on the loom frame. Through the lower end of this lever 23, passes
four horizontal racks 25, the outer ends of which are raised or lowered by means of
wires 26, according as the wires are operated by the screws on the pattern chain 27,
so that when a wire 26, is raised by one of said screws the rack 25, will be thrown
into gear with a pinion 28, but when the wires 26, are not raised the rack 25, will
slide under and out of gear with the pinion 28. On the side of the rack 25, at its
forward end is a small projection 29, which when the rack is raised and pushed
forward slides upon a guide 30, until the projection 29, passes the end of said guide
when the end of the rack falls down and it is drawn back out of contact with the
pinion 28. Each of the pinions 28, are secured to a face plate 31; there are four of
these pinions and face plates, and they are supported in pairs on a stud carried by a
stand 32, keyed on to shaft 33, mounted in a T shaped frame 34, on the side of the
loom frame. Each of the face plates 31, are provided with two notches to receive the
end of the catch pawl 35, that holds the face plate in position at each half revolution ;
the rack 25, being provided with just half the number of teeth that there are in the
pinion 28, so that each time the pinion is operated by the rack it will make just one
half a revolution.
To each of the face plates 31, is secured one end of a chain 36, 37; the chain 36,
passes down and under a sheave 38, to a proportional lever 39, to the lower end of
which the end of the chain is attached. The lever 39, is fulcrumed at the centre of a
lever 40, hung on a shaft 41, in the T frame 34. The chain 37, passes under a
sheave 42, and its end is secured to the upper end of the poportional lever 39;
the lower end of the proportional lever 39, is just twice the length of the
upper end so that if the same amount of travel is imparted to the upper end it will
.cause the lever 40, to move just twice the distance that the same movement would do
if imparted to the lower end of the lever.
To the lower end of the lever 40, is connected a rod 43, the other end of which is
connected to a chain 44 that passes round a sheave 45, attached to the picker stick
stand 46, then passes up and over a sheave 47, attached to the underside of the
shuttle box frame, and then down and connected to a loose collar 48 on the shuttle
box rod 49, around which is placed the spiral spring 50, in the usual manner.
It will be seen that as the cam 22, revolves it will operate the bell crank lever 23,
and impart motion to the rack 25, which when in gear with the pinion 28, will
impart a half revolution to the pinion and face plate 31, so that when the face
plate that connects with the lower end of the proportional lever 39, is operated it
will give one box, but when the face plate that is connected to upper end of the
proportional lever 39, is operated it will give two boxes, and if both plates are
operated simultaneously they will give three boxes.
To operate the boxes at one end of the loom it takes two racks, two pinions and
face plates, and two chains, one connected to the upper and the other connected to
the lower end of the proportion lever, and the same arrangement is required to
operate the boxes at the other end, the chain 44, in this case passing to the other end
of the loom underneath the lathe.
5
For the take up we use a take up roll 51, whose circumference is turned to an
exact whole number of inches and on one end of the take up roll shaft 52 a worm
gear 53 is fixed with just as many teeth as there are inches in the circum-
ference of the roll, so that each tooth of the gear and also each inch of the circum-
ference of the roll represents an inch of the woven fabric; running in the worin 5
gear 53 is a single worm 54 on a short shaft 55 turning in a stand fixed to the loom
frame, and at one end of this short shaft 55 is placed the take up ratchet 56 with.

page_text: just as many teeth in its circumference as there are picks to the inch in the fabric to
be woven one revolution of the ratchet moves the worm gear 53 one tooth which
takes up one inch of the woven goods, the ratchet 56 (see Fig. 10) is moved one
tooth by a pawl 57 attached to one end of a lever 58 swinging on the hub of the
ratchet 56, the other end being raised by every forward movement of the lay by
an inclined plano or groove 59 attached to the sword 60. This forms a positive take
up, and the number of teeth in the take up ratchet 56, which ratchet can be readily
exchanged, must be the same as the number of picks per inch required in the woven
fabric. To convert this same mechanism into a negative take up, the inclined plane 59,
is moved up on the sword 60, so as to bear on the top of the lever 58, that operates
the pawl, and at the end of this lever 58, a spiral spring 61, is attached, the other
end of the spring 61 being hooked to a threaded rod 62, passing through a stand on
the loom frame with a thumb nut on the rod to adjust the tension of the spring. The
weight of the goods woven is governed by the tension of the spring.
The let off is as follows: On the yarn beam shaft 70, a worm gear 71, is attached
running in which is a worm 72, on an upright shaft 73, supported in stands bolted to
the loom frame on this upright shaft 73, a ratchet wheel 74, (see Figs. 11 and 12) is
attached, on whose hub is a loose pawl plate 75, on which swing two or more pawls 76,
as may be required, and this pawl plate 75, is connected by an arm 77, to a
perpendicular lever 78, whose upper end is fulcrumed in a stand on the loom frame
and to the other end of this lever 78, the whip roll 79, is rigidly fastened; at a proper
distance on this lever 78 one end of a rod 80, is attached, the other end passing
loosely through a hole in the sword 60, with a nut on the end to regulate the length;
every forward movement of the sword 60 moves the whip roll lever 78, by means of
the rod 80, and through the arm 77, connected to the pawl plate 75, actuates the
ratchet which through the worm 72, and gear 71, on yarn beam shaft 70, lets off the
yarn the requisite tension that is wanted on the yarn is governed by an adjustable
weight 81, on a bell crank lever 82, fulcrumed to a stand on the frame one end of the
lever bearing against the lower end of the whip roll lever 78; the length of the rod 80,
attached to the whip roll lever 78, and passing through the sword 60, is so adjusted
that when the lay strikes it holds the whip roll rigid. This mechanism may be applied
separately to two yarn beams on the same loom and the tension of each governed
independently, as shown in Fig. 1.
Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, as communicated to me by my
foreign Correspondents I declare that what I claim is :-
1st. The improved loom constructed substantially as, described with reference to the
accompanying drawings.
2nd. In a loom a drop weight made in two parts that are kept extended by a spring,
and provided at its lower end with a catch in combination with a pattern chain, racks,
geared sector cams and harness lever, substantially as shown and described.
3rd. In a loom a drop weight consisting of two parts 16, 17 hung at their upper
end on a rod 19, the parts that come in contact with the pattern chain and rack being
bow shaped, and their lower ends provided with catch 20 in combination with a spring 21
held on studs in the bows, substantially as and for the purposes set forth.
4th. In my improved loom, the pawl N bell crank lever M slotted bar L and
collar in combination with the lifting rod K bell crank lever J and scroll cam H for
operating the pattern chain cylinder B2, substantially as set forth.
5th. The shuttle operating mechanism herein described consisting of the combina-
tion of the camp on shaft P, roll n on shuttle arm Q, upright shaft r sleeves 9, 9²
pin d, d, spring R and picker stick S, substantially as and for the purposes set
forth.
6th. The shuttle stop-motion herein described consisting of the rods T, T¹ carrying
fingers t, t, arm V chain or cord u, lever W chain or cord and latch lever X in
combination with the swell U, and shuttle arm Q, substantially as set forth.
7th. In my improved loom the rods T, T' carrying fingers t, t, arm V, chain or
B

page_text: cord u lever W chain or cord vland latch lever X, in combination with needle h, rod
block, inclined planej, plate provided with notch ², lever 5 rod 6 shipper arm 7
shipper handle 8 swell U and shuttle arm Q substantially as and for the purposes set
forth.
8th. In my improved loom, the rods T; T¹ carrying fingers t, t in combination with
the swells levers needle h, rod g block f, inclined planej plate a provided with
notch, lever 5 rod 6 shipper arm 7 and shipper handle 8.
9th. The shuttle box motion herein described consisting of cam 22 on shaft P bell
crank lever 23 racks 25, pinions 28 face plates 31 connected to proportional lever 39
fulcrumed on lever 40, the lower end of which is connected to the shuttle box rod 49
in combination with rods 26 and pattern chain 27, substantially as shown and
described.
10th. The guide 30 in combination with the projection 29 on rack 25 for holding
the rack in gear with the pinion 28 until the pinion has made one half a revolution
substantially as set forth.
11th. In a loom a take-up roll the circumference of which is an exact whole number
of inches in combination with a worm gear having the same number of teeth as there
are inches in the circumference of the roll, and a ratchet wheel provided with as many
teeth as there are to be picks to the inch in the fabric being woven, substantially as set
forth.
12th. The let off motion herein described consisting of whip roll 79, whip roll
lever 78 worm gear 71, shaft 73 upon which is mounted a worm 72 and ratchet
wheel 74 on the hub of which is a loose pawl plate 75 carrying pawls 76 the pawl
plate being connected by an arm 77 to the lever 78 in combination with the weighted
bell crank lever 82, rod 80 and sword 60, substantially as set forth.
Dated this 4th day of Octalion 1807
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.