Year: 1896

page_text: Date of Application, 1st Jan., 1896
Complete Specification Left, 30th Sept., 1895-Accepted, 1st Jan., 1997
PHILIP JAMES EVANS, ARTHUR EVANS, EDWARD EBENEZER EVANS Cloth
Manufacturers, Brimscombe Stroud Gloucestershire and JOSEPH HENRY CLISSOLD
Cloth Weaver The Bourne Stroud Gloucestershire do hereby declare the nature
of this invention to be as follows:-
In weaving on a power loom it frequently happens that through the faulty
working of the loom a shuttle attempts to enter a box which is already filled by a
shuttle & the lathe coming up against the cloth forces the outside shuttle through
the warp & breaks it off for the length of the shuttle thus causing damage & loss
of time. The following apparatus has been invented to prevent this damage & it
is claimed that it does so absolutely. Also it will stop the loom when a swell catch
spring breaks thus again preventing damage. It consists of a plate carrying 2 ears
which works a lever and attached to one end of this lever is a long finger, while the
other end is curved and operates upon a cam attached to the strap rod on the breast
beam.
The long finger stands at right angles to the breast beam and when the loom is
working correctly it passes through a hole in the lathe, being kept in position for
doing so by a small lever fastened on to the swell catch rod, but when a shuttle
goes wrong this little lever does not rise & so the long finger instead of passing
through the lathe drops into a notched plate on it & prevents it closing up against
the cloth & at the same it actuates the levers & cams attached to the breast beam
& throws off the strap.
To lift the long finger so that the loom may be started a lever actuated by a
spring is attached to the breast beam which lifts the lever into position to again
pass through the lathe.
ARTHUR EVANS.
JOSEPH H. CLISSOLD.
PHILIP JAS. EVANS.
EDWARD E. EVANS.
We PHILIP JAMES EVANS, ARTHUR EVANS, EDWARD EBENEZER EVANS,
Cloth Manufacturers, Brimscombe, Stroud Gloucestershire and JOSEPH HENRY
CLISSOLD Cloth Weaver, The Bourne Stroud Gloucestershire 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 :-
In weaving on a power loon it frequently happens that through the faulty
working of the loom a shuttle attempts to enter a box which is already filled by a

page_text: shuttle, and the lathe coming up against the cloth forces the outside shuttle
through the warp, and breaks it off for the length of the shuttle, thus causing
damage and loss of time. The following apparatus has been invented to prevent
this damage, and it is claimed, that it does so absolutely, also it will stop the loom
when a catch spring breaks, thus again preventing damage. It consists of a plate
secured to the breast beam of the loom and on which is centred a double ended
lever. To one end of this lever is attached a long finger, while the other end is
curved and operates upon a cam fixed to the strap rod on the breast beam. The
long finger is fixed at right angles to the breast beam, so that, when the loom is
working, it passes through a hole in the lathe, being kept in position for doing so
by a small lever on the catch rod, which is centred on the lathe,-but when a
shuttle goes wrong that is, a shuttle being endeavoured to be sent into a shuttle
box already occupied by another shuttle. This small lever on the catch rod does not
rise, so that the long finger which rests on it, instead of passing through the lathe,
drops into a notched plate on it and prevents it closing up against the cloth, and at
the same time it actuates the lever and cam attached to the breast beam and throws
off the strap.
To lift the long finger so that the loom may be started, a cranked lever, actuated
by a spring, is attached to the breast beam which lifts the long finger into its
normal position so that it again passes through the lathe. The releasing of the
cranked lever is done by the lifting of a pawl, the tail of which is pressed by a
second cam on the strap rod. And further, the catch lever is held against the
swell spring of the shuttle box by a coil spring on the catch rod being kept in
tension, so that, if this spring happened, to break, the loom would not stop
automatically when the shuttle should also happen to only travel half way across the
lathe, usually caused by the picker stick breaking.
The stopping of the loom in this case is dependent on the coil catch spring for
this reason: The coil spring is part of the mechanism with which most looms are
fitted and usually termed the stop motion, its utility being to stop the loom
automatically should the shuttle remain on the lathe through breakage of some
part of the loom or through the speed of the driving power, being suddenly lowered.
The shuttle being thus on the lathe allowe the catch lever to press the swell spring
of the ebuttle box in, and therefore raises a finger that throws the strap off and stops
the loom. The pressing of the catch lever against the swell spring is dependent on
the said coil spring so that in the aforesaid instance of the picker stick breaking or
slow speed together with coil spring breaking the new stop motion now described is
a supplementary mechanism to stop the loom automatically.
With the stop motion first described, the loom would be stopped automatically
when the catch spring broke as the long finger would not be supported and
therefore fall into the notch plate and stop the loom as before described. In this
instance the loom would be working with one or more shuttles.
In order that our invention may be properly understood we have annexed
hereunto one sheet of explanatory drawings. This sheet shows the application of
our improvement to a loom. Figs. 1 and 2. Sheet 1 are the end sectional elevations
of the breast beam, and lathe of a loom showing the application of the stop motion.
The lathe A is fitted with a catch lever B at each end and which levers are centred
on the catch rod C passing along the frent of the lathe. In the middle of the
lathe, viewed from the front horizontally, a small lever D is fixed on the catch
rod C. Over this small lever D rests by virtue of its weight a long finger E
centred on the top of the double ended lever F. The other end of lever F is
provided with a tail which during the working of the loom is in close contact with
the cam G. The cam G is fixed on the strap rod H for throwing the strap on
and off to start ard stop the loom. At each end of this strap rod I are the usual
baudles for the attendant, and the end of the handle is indicated by the circle I for
its different positions. Jis the breast beam with stationery position, and K the
casting on which the centre of lever F is carried, the casting K being bolted to
the breast beam J. L is a plate fixed to the lathe and provided with a small

page_text: notch, or recess, to receive the end of the finger E, when the finger is lowered by
the small lever D, which is controlled by the position of the catch lever B.
During the ordinary working of the loom the lathe A approaches and recedes
from the breast beam J,-the two dend centres being the nearest and farthest
positions of the lathe A to the breast beam J.
On the lathe travel the shuttles from the shuttle box ou one side to the shuttle
box on the other side, and ench shuttle box is fitted with a swell spring Mas
shown in Figs. 3 and 4. When the shuttle box is empty this spring M is closed
as in Fig. 4, and when full the shuttle forces the swell spring M outward as in
Fig. 3.
The movement of this swell spring is communicated to the catch lever B by
direct contact, and therefore actuates the small lever D. The catch lever B is
beld against the swell spring M by the coil catch spring T on the catch rod Cast
shown in Figs. 8 and 9.
In Fig. 1. the catch lever B is in position with the shuttle hoxes empty both
ends of the lathe A, and in Fig. 2, the catch lever B is in position with either
shuttle box full. In the ordinary working of the loom, at the exact moment the
lathe A reaches its further dead centre the shuttle is seut travelling across the
lathe from one shuttle box to the other shuttle box,-but before the shuttle reaches
the other side the lathe has commenced to move and has approached the breast
beam more than half an inch,-while the clearance space between the point of
finger E and the notch plate L at the further dead centre of the lathe, is only
quarter of an inch, that is, the critical point of contact of finger E with plate Ĺ
is, when the lathe A has moved from its further dead centre by quarter of an
inch. At this critical position the shuttle is in the centre of the lathe travelling
to the other side so that the shuttle boxes at both ends at this particular moment
are empty, so that the swell spring M is closed, and the catch lever B is in the
position shown on Fig. 1, so that the small lever D is up, and the finger E glides
over the top into the hole N in the lathe A. When once entered the hole, finger E
is not dependent on the small lever D to take its weight, so that the lever D can
drop into its lower position without now altering the position of finger E. Just
after finger E has entered the hole N, the shuttle has reached the other side and
filled the shuttle box causing lever D to drop. During the time the lathe A is
approaching and receding from the breast beam J. the shuttle does not travel
across the lathe again untill the further dead centre is reached. The nearer dead
centre of the lathe, being shown in dotted lines in Fig. 1 and the strong lines
indicating the further dead centre in Fig. 1.
It frequently happens that the shuttle on travelling from one side tries to enter
the shuttle box un the other side which is already full so that the travelling shuttle
would be kept outside the shuttle box because it is already occupied by another
shuttle, which in the correct working of the loom should not be there, so that when
the lathe A approaches the breast beam J the shuttle that is outside would break the
warp on the loorn. But as one shuttle box in such a case is filled all the time,
the catch lever B is pressed outward with the result that the small lever D. drops
and likewise the finger E so that the joint of finger E instead of entering the hole
would drop into the notch plate L. when the lathe A moves from its further dead
centre towards the breast beam J. the result being that finger E moves a quarter
of an inch towards the breast beam J and in so doing actuates the double lever F
and that in turn actuates the cam G on the strap rod H so that the strap is thrown
off and loom is stopped automatically. At the same time the finger E being pressed
between the lathe A and the breast beam J forms a solid resistance to the further
movement of the lathe A. and thus preventing any damage to the warp. It s
happens when the loom is stopped by the attendant throwing off the handle I, and
it is required to start the loom again, that one shuttle box will be full for the first
revolution of the loom and with the automatic stop motion described above, it is
evident that the catch lever B. would be in its outward position, and that the
finger E would again enter the notch plate L and stop the loom. To overcome

page_text: this difficulty we provide an automatic supplementary gear to the said stop motion
as shown in the end elevation in Figs. 5 and and in side elevation in Fig. 7 and
in plan in Figs. 8 and 9.
When the attendant stops the loom by throwing the strap full off and the second
cam O fixed on the strap rod H, and which actuates the tail of the pawl P-which
pawl is centred on the casting K-so that the catch of the pawl is raised and
liberates the spring held cranked lever Q which is likewise centred on casting K.
The lever Qis forced by the spring S outward but untill the finger E has been
released from the notch plate L by the attendant, it cannot take its most outward
position as shown in Figs. 6 and 9 when the end of this lever Q passes under
finger E so that the finger E rests on the lever Q and passes into the hole N in the
lathe A when the attendant restarts the loom. Although for the first revolution
the small lever D is down. Again in the first revolution of the restarting of
loom the stud R, fixed to the lathe A comes in contact with lever Q and forces it
back towards the breast beam J so that the pawl P again falls into place and
holds the lever Q in the position shown in Figs. 5 and 8, the spring S being
compressed at the same time. Fig. 9 shows the side elevation of the stop motion
and supplementary gears above described. It so happens that the said stop motion
serves a second purpose to prevent damage to the warp when the coil catch spring T,
shown in plan in Figs 8 and 9, breaks. The coil catch spring T. on catch rod C.
keeps the catch lever B. pressed against the swell spring M so that the movements
of the swell spring are communicated to the small lever D. Should this catch
spring T break, the lever D drops and the loom is stopped again by finger E
dropping into the notch plate L.
This is only of use in case the shuttle was only sent half way across the loom
for which emergency the coil spring T is part of a mechanism with which most
looms are fitted and usually termed the stop motion, its utility being to stop the
loon automatically should the shuttle remain on the lathe A through breakage of
some part of the loom or through the speed of the driving power being suddenly
lowered. The shuttle being thus on the lathe A allows the catch lever B to press
the swell spring M of the shuttle box in, and therefore raises a finger that
throws the strap off and stops the loom. The pressing of the catch lever Bagainst
the swell spring M is dependent on the said coil spring T so that in the aforesaid
instance of the picker stick breaking or slow speed together with coil spring T
breaking the new stop motion now described is a supplementary mechanism to stop
the loom automatically to prevent the break age of the warp by the lathe A forcing
the shuttle through the warp on approaching the breast beim J.
The ordinary loom is provided with a automatic motion to stop the loom in
case the shuttle only travelled half way across the lathe but is dependent on the
catch spring T, whereas with the said automatic stop motion the loom is stopped
even when the catch spring is broken.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare what we
claim is :-
First. The use of an automatic stop motion on a power loom for weaving (on
which two or more shuttles are used) by which said motion, through the faulty
working of the loom, two shuttles endeavour to occupy the same shuttle box, the
loom is instantly stopped, and further the lathe of the loom securely held so that
the shuttle, endeavouring to enter the already occupied shuttle box, does not break
the warp as substantially shown on Sheet 1.
Second. The use of an automatic supplementary gear to the said automatic
stop motion to enable the loom to be stopped and started by the attendant without
the said stop motion operating for the first revolution of the loom on the restarting
of the loom as substantially shown on Sheet 1.
Third. The use of the said automatic stop motion on a power loom for weaving
(on which one or more shuttles are used) by which said motion the loom is instantly

page_text: stopped through the catch spring on the lathe of the loom breaking so that a
shuttle which is only sent half way across the lathe through the breaking of a
picker stick, or of any other cause is prevented from breaking the warp because-
the loom is instantly stopped as substantially shown in Sheet 1.
Dated this Twenty-eighth day of September 1896.
PHILIP JAS. EVANS.
ARTHUR EVANS.
EDWARD E. EVANS.
JOSEPH HENRY CLISSOLD.