Year: 1888

page_text: Date of Application, 18th May, 1883.
Complete Specification Left, 18th Feb., 1889
Complete Specification Accepted, 18th May, 1889
MOTIONS
I, WILLIAM LLOYD WISE of No. 46 Lincolns Inn Fields, in the County of
Middlesex, Consulting Engineer and Patent Agent do hereby declare the nature of
this invention to be as follows:-
This invention relates to the weft fork mechanism and the take up gear of power
looms, the two being so combined that the take up gear is put out of action on
the breakage or fracture of the weft by the direct operation of the weft fork
mechanism.
Referring to the accompanying three sheets of drawings, which are appended by
way of illustration,
Figure 1 is a side elevation of the mechanism of the weft fork mechanism the lay
and breast beam in section.
Figures 2 and 3 shew the same diagrammatically in other positions of the parts of
the weft fork mechanism.
Figure 4 is a plan of the weft fork.
Figure 5 is a plan of the weft rake.
Figure 6, a side elevation of the take-up gear.
Figure 7 is a detail of the connecting rod of the take-up gear on a larger scale.
Figure 8 a front elevation of the take-up gear.
Figure 9 a plan of the rod.
Figure 10 an elevation of the compensation device with section of the lay.
Figure 11 a plan of the same.
On either side of the breast beam and immediately in front of the shuttle boxes, is.
arranged a weft rake B placed horizontally and capable of rotation about the pin A,
Figures 1, 2, and 3.

page_text: The said weft brake B projects over the lay, when the latter is in its forward
position, to such an extent that the weft thread must of a necessity lie upon it.
By means of the adjustable connecting-rod C. (Figures 1. 2 and 3) and the lever E
operated by the cam F (Figure 1), an oscillating movement is imparted to the weft
rakes B in such a manner that the left hand rake is raised by one revolution of the
crank shaft, and the right hand rake is raised by the next revolution.
As long as the weft remains unbroken and the loom is working all right, the weft
will follow the movement of the rake and lift. the weft fork G; the hook G¹ will then
move idly as indicated in Figure 1.
But if the weft breaks or is exhausted, the weft fork G remains in its position of
rest, when the rake B is lifted; the hook G' catches upon the hook shaped portion
of the weft fork, and carries the latter along with it. The weft fork is supported on
a moveable carriage which partakes of its movement and transmits the same to the
belt-shifting lever X.
By means of the latter, the spring stopping lever is released, and at the same time
by means of the wire X the lever Y and the semi-circular strap Z (Figure 6), the
pawls of the take-up gear are disengaged. In this way the loom is stopped and the
cloth beam is placed out of operation. Figure 3.illustrates the corresponding positions
of the parts of the weft fork mechanism.
The loom is re-started as with ordinary weft fork mechanism, after a fresh shuttle
has been put in, by simply operating the stopping lever.
The weft forks are by this movement, brought back into their proper positions, and the
strap Z of the take up gear is raised, so that the pawls of the same are replaced into
engagement.
The weft rake can be adjusted with exactness by means of the set screw D, Figure 1
and its stroke be regulated.
The differential take-up gear which is connected with the weft-fork, has for its
object to effect in a direct manner the rolling up of the finished cloth upon the cloth
beam Q, Figures 6 and 8, that is to say, the rate of revolution is reduced in proportion
to the increase in circumference of the cloth roller.
For this purpose the upward movement of the feeler or jockey roller R, Figures 6
and 8, is transmitted by a link S and steel band S¹ to the sheave T (Figures 6. and 8)
and from the latter by means of a similar band T¹ to the differential lever U,
(Figures 6 and 8) in an opposite sense, that is to say, an upward movement of the
roller R produces a downward movement of the differential lever. In order to
balance the weight of the latter and obtain as uniform a motion as possible of the
same, a weight T (Figure 8) is hung on to the sheave T by means of the steel
band T
Guided by the differential lever U, the connecting rod M (Figures 6, 8 and 9)
shares its downward movement, whilst it has imparted to it a uniform to and fro move-
ment from the lay. by means of the guide rod H (Figures 6, 8 and 9) and the
intermediate piece H¹ (Figure 6).
Now in the same proportion as the connecting rod M is lowered by an increase in
the diameter of the roll of cloth so will the leverage with which the to and fro move-
ment is transmitted to the bent lever V (Figures 6, 8 and 9) be increased.
This movement which becomes less and less as the cloth roll increases, is transmitted.
by a rod V (Figures 6 and 8) to the pawl quadrant. W on which are six-pairs of
pawls, all of the same length. These pawls are disposed in such a manner that only
one pawl is in engagement at one tinie, so that the distance from one tooth to the
other of the ratchet wheel is divided, so to speak, into 12 parts.
The motion of the ratchet wheel is transmitted by a pair of cone wheels and by
a worm and worm wheel to the cloth beam Q.
The cone wheels are arranged so that by moving one of the pair, the direction of
rotation of the cloth roller may be reversed.
The bent lever V is provided with an adjusting screw V₁. (Figure 9) and scale, so
that the rate of take up may be varied easily and quickly, within any practicable..
limits.

page_text: The throwing out lever K. (Figures 6, 7, 9 and 10) is operated from the reed N by
the spring O and the lever P in such a manner that it is thrown out by the normal
striking or knocking up of the reed, but with unusual striking when the cloth becomes
closer than usual, it remains in the lower position and thus increases the action of the
take-up gear.
The reed is kept up to the slay by springs which give way when the cloth opposes
more than the normal resistance. As long as they do not give way the lever K is
lifted each time the weft is knocked up. There is then a certain amount of lost
motion between the sleeve and the rod H. But when the lever K is not lifted it
forins an abutment which obliges the sleeve L to have the same stroke as the rod H.
The rate of feed is thus increased.
The leverage of the spring O may be such that the stroke of the lay may be trans-
mitted increased to any extent to the lever P.
The spring O may be replaced by a lever pivoted at 0¹.
The throw-out lever Koperates also, when the take-up is to act negatively, that
is to say, when the latter is to work only when weft has been inserted.
This is effected by simply removing the contact piece J (Figs. 6, 7 and 9) from the
guide rod H. If then the throw-out lever K be th. own out by the lay, the guide
rod H will work idly, and the take-up will not operate. When however weft has been
inserted, the reed, when striking, in the forward position of the lay, will remain
somewhat behind, and the throw-out lever K which remains in the position of rest,
will cause the guide sleeve L to move with it, the connecting rod M being fixed upon
the said guide sleeve L and consequently the take-up gear rolls up the cloth.
It is evident that the spring behind the reed must be of less strength in this case
than in the previous case.
This 19th day of Mo... 1000
W. LLOYD WISE,
Per F. J. Brougham.

page_text: Figure 12 shows in side view the improvements applied to a loom.
On either side of the breast beam and immediately in front of the shuttle boxes
is arranged a weft rake B placed horizontally and capable of rotation about the pin A,
Figures 1. 2 and 3.
The said weft rake B projects over the lay, when the latter is in its forward position,
to such an extent that the weft thread must of a necessity lic upon it.
By means of the adjustable connecting-rod (Figures 1. 2 and 3) and the lever E
operated by the cam F (Figure 1) an oscillating movement is imparted to the weft
rakes B in such a manner that the left hand rake is raised by one revolution of the
crank shaft, and the right hand rake is raised by the next revolution.
As long as the weft remains unbroken and the loom is working all right, the woft
will follow the movement of the rake and lift the weft fork G; the hook G¹ will then
move idly as indicated in Figure 1.
But if the weft breaks or is exhausted, the weft fork G remains in its position of
rest, when the rake B is lifted; the hook G¹ catches upon the hook shaped portion of
the weft fork, and carries the latter along with it. The weft fork is supported on a
moveable carriage which partakes of its movement and transmits the same to the belt
shifting lever X.

page_text: By means of the latter, the spring stopping lever is released and at the same time
by means of the wire X' the lever Y and the semi-circular strap Z (Figure 6) the
pawls of the taking up-motion are disengaged. This strap Z is guided between
flanges on the quadrant W and when it is depressed it rests upon the tail pieces of
the pawls lifting their acting ends out of the teeth of the ratchet wheels. When the
strap is raised the pawls go back into their acting position. In this way the loom is
stopped and the cloth beam is placed out of operation.
Figure 3 illustrates the corresponding positions of the parts of the weft motion.
The loom is re-started as with ordinary weft motion, after a fresh shuttle has been
put in, by simply operating the stopping lever.
The weft forks are by this movement brought back into their proper positions, and
the strap Z of the taking up-motion is raised, so that the pawls of the same are
replaced into engagement.
The weft rake can be adjusted with exactness by means of the set screw D Figure 1
and its stroke be regulated.
The differential taking up-motion which is connected with the weft motion has for
its object to effect in a direct manner the rolling of the finished cloth upon the cloth
beam Figures 6 and 8 that is to say, the rate of revolution is reduced in proportion
to the increase in circumference of the cloth roller.
For this purpose the upward movement of the feeler or jockey roller R Figures 6
and 8, is transmitted by a link S and steel band S₁ to the sheave T (Figures 6 and 8)
and from the latter by means of a similar band T¹ to the differential lever U (Figures 6
and 8) in an opposite sense, that is to say, an upward movement of the roller R
produces a downward movement of the differential lever. In order to balance the
weight of the latter and obtain as uniform a motion as possible of the same, a
weight T (Figure 8) is hung on to the sheave T by means of the steel hand T.
Guided by the differential lever U, the connecting rod M (Figures 6, 8 and 9)
shares its downward movement, whilst it has imparted to it a uniform to and fro
movement from the lay, by means of the guide rod H (Figures 6, 8 and 9) and the
intermediate piece H' (Figure 6).
The lever V is pivotted on a stud attached to the loom side, as shewn in Figs. 6,
8 and 9. The end of its dependent arm is slotted (Figs. 6 and 8) and in this slot
there works a sliding block (Fig. 8) through which passes a pin the ends of which
are secured in the ends of the forked lever U. On this pin is also pivotted one end
of the connecting rod M (Figs. 6, 8 and 9) which is pivotted at its other end to a
sleeve I loose on the rod H. This rod slides to and fro in bearings, its motion being
derived from the lay, through the intermediate piece H bolted to the latter and
having a stud or finger working in a slot (Fig. 10) in the rod H. The sleeve L
is obliged to partake of the movement of the rod H as will be presently described.
Now in the same proportion as the connecting rod M is lowered by an increase in
the diameter of the roll of cloth so will the leverage with which the to and fro move-
ment is transmitted to the bent lever V (Figs. 6, 8 and 9) be increased.
This movement of the lever V which becomes less and less as the cloth roll increases,
is transmitted by a rod V" (Figs. 6 and 8) to the pawl quadrant W on which are six
pairs of pawls of which six only are shewn in the drawing for sake of clearness
all of the same length. These pawls are disposed in such a manner that only one
pawl is in engagement at one time, so that the distance from one tooth to the other
of the ratchet wheel is divided, so to speak, into 12 parts.
The notion of the ratchet wheel is transmitted by a pair of cone wheels and by a
worm and worm wheel to the cloth beam Q.
The cone wheels are so arranged that one may be transposed with relation to the
other and thus direction of rotation of the cloth roller may be reversed in the well
known manner.
The bent lever V is provided with an adjusting screw VI (Figure 9) and scale, so
that the rate of take up may be varied easily and quickly within any practicable
limits.
As already stated the sleeve L partakes of the motion of the rod H. To this end

page_text: there is beyond at the right hand end (Fig. 6) of the sleeve a stop collar on the rod
and at the left hand end a fixed stop J (Figs. 7 and 9) and a tripping stop or
throwing out lever K. When the sleeve is between the collar and the throwing out
stop it follows the motion of the rod; when the throwing out stop is tripped there is
a certain amount of lost motion between the sleeve and tie rod (Figs. 7 and 9).
The throwing out lever K (Figs. 6, 7, 9 and 10) is operated from the reed N by
the spring O and the lever P (Fig. 10) in such a manner that it is thrown out by the
normal striking or knocking up of the reed, but with unusual striking when the
cloth becomes closer than usual it remains in the lower position and thus increases
the action of the taking-up motion. The spring O is pivotted at one end to the slay
and is connected about the centre of its length with the reed frame (Fig. 10).
up.
The reed frame is kept up to the slay by springs which give way when the cloth
opposes more than the normal resistance. As long as they do not give way the
lever K is lifted or tripped each time the weft is knocked There is then as
already explained a certain amount of lost motion between the sleeve L and the
But when the lever K is not lifted it forms an abutment which obliges the
to have the same stroke as the rod H. The rate of feed is thus increased.
The leverage of the spring O may be such that the stroke of the lay may be
transmitted increased to any extent to the lever P.
rod H.
sleeve
The spring O may be replaced by a lever pivotted at O'
The throw out lever K operates also, when the taking-up motion is to act
negatively, that is to say, when the latter is to work only when weft has been
inserted.
This is effected by simply removing the contact piece J (Figs. 6, 7 and 9) from the
guide rod H. If then the throw ont lever K be thrown out by the lay, the guide
rod H will work idly, and the take-up will not operate. When however weft has
been inserted, the reed, when striking, in the forward position of the lay, will remain
somewhat behind, and the throw-out lever K which remains in the position of rest,
will cause the guide sleeve L to move with it, the connecting rod M being fixed
upon the said guide sleeve L, and consequently the taking up-motion rolls up
the cloth.
Fig. 12 represents a loom fitted with improvements according to this invention.
a is the frame of the loom. is the crank shaft which imparts through the
medium of the connecting arms c a to-and-fro movement to the swords d d of the
lathe, and thereby also to the lathe e.
is the tappet shaft which carries the picking arms for throwing the shuttle
and which is connected to the crank shaft 6 by toothed wheel gearing in the
ratio of 2 1.
Upon the beam is wound the warp which passes over the guide rod i to the
healds (which may be operated by any suitable mechanism) thereby forming there
the shed which allows of the passage of the shuttle through the warp threads.
The finished cloth is led over the guide roller 7 on to the cloth beam Q upon which
it is rolled or wound by the improved differential taking-up-motion.
The weft hook is fixed to the frame by means of the support m and receives its
motion from the cam F which is mounted on the shaft g.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. In a power loom weft forks arranged horizontally on both sides, in combination
with connecting rods and levers directly brought into connection with the taking up-
motion, so that when the weft thread breaks, the taking up of the cloth is immediately
stopped, the pawls of the taking up-motion being lifted out of the teeth of the
-ratchet wheel substantially as described and illustrated.
2. In a power loom a weft motion arranged horizontally on one or on both sides
of the loom according to requirement and comprising a weft rake which takes up the
weft thread from the shuttle race, presses it against a fork and lifts the same, so long

page_text: as the weft thread is not broken or used up, whilst if there is no weft thread, the
weft fork remains stationary during the movement of the rake, is then caught by
the hook, whereby the taking up pawls are thrown out of gear and the loom is
stopped substantially as described.
3. In a power loom with a weft motion of the kind referred to in claim 2, the
arrangement of the weft rake on the shuttle race of the slay substantially as described
and for the purpose specified.
4. In a power loom a differentia! taking up-motion comprising the feeler roller R
connected by flexible attachments to the sheave T in combination with the differential
lever U also connected to the sheave T the arrangement being such that for each
diameter of the cloth beam the stroke of the ratchets is regulated in such a manner
that the rate of taking up of the cloth remains constant from beginning to end of
the piece substantially as described.
5. In a differential taking up-motion of the kind referred to in claim 4 a spring
or lever attached to the lathe in combination with a feeler lever P and a throw out
lever K the arrangement being such that the throw out lever is thrown out during
the normal operation of the reed, but maintains its position and correspondingly
increases the stroke of the connecting rod when the stroke of the reed is too great
substantially as described.
6. In a differential taking up motion a tappet J on the guide rod designed to
enable the taking up motion to be made to work either positively or negatively
according as the said tappet is fixed to the guide rod of the governor or is omitted
substantially as described.
7. In a differential taking up-motion of the kind referred to in claim the
combination of a scale on the arm of the bent lever V with a regulating screw for
the adjustment of the taking up-motion to give the required number of weft threads
per unit of length of the fabric substantially as described.
Datad this 16th day of Bahru 1000