Improvements in and relating to Warp Stop Motion for Looms
Year: 1898

page_text: Reprinted as further amended in accordance with the decision of the Chief
Examiner dated the 27th day of February 1905.
(All Amendments are shown in erased and italic type).
Improvements in and relating to Warp Stop Motion for Looms.”
(A communication by FREDERIC ELLSWORTH KIP, of Montclair in the County of
Essex, in the State of New Jersey, United States of America, Manufacturer).
and
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool, and 6, Bank Street, Manchester both in
the County of Lancaster 118, New Street, Birmingham in the County of Warwick,
322, High Holborn, in the County of Middlesex, Civil Engineer,
do hereby declare the nature of this invention and in what
is to be performed, to be particularly described and ascertained in and by the
following statement:-
manner the same
This invention relates to the class of devices employed on looms to effect the
stopping of a loom when a warp-thread breaks; and the object of the invention is,
in part, to provide the stop-motion with an improved terminal drop, adapted to over-
come several difficulties encountered in the practical adaptation of such drops to a
loom; in part also, to overcome a difficulty arising from the breaking of the circuit at
the fallen drop, by the vibration of the loom, before the shipping lever can be freed.
By the present invention the instant the drop falls and closes the main circuit an electro-
magnet or solenoid is energized and acts to shunt out the drop and maintain the cir-
cuit closed until the going part of the loom can act to free the shipper-lever. Another
feature of the invention is the utilization of the weft-fork carrier and weft-hammer to
actuate the knock-off lever, as well when a warp-thread breaks as when a weft-thread
breaks or fails. Another feature of the invention provides against interference with
the take-up mechanism when a warp-thread breaks, thereby avoiding a let-off and a
defective mark in the fabric at each stoppage of the loom. Another feature of the
invention provides a means for holding off the brake when the loom is at rest to
permit the weaver to turn the loom back, if desired.
The invention is illustrated in the accompanying drawings, wherein―
Figure 1 is a diagrammatical, longitudinal, sectional elevation illustrating the
invention; Fig. 2 is a plan of the same, and Fig. 3 is a front end elevation as seen
from the arrow 3 in Fig. 2. These views are on a comparatively small scale.
Figs. 4, 5 and 6 illustrate the weft-fork carrier F, and its appurtenances, on a
larger scale than the principal views. Fig. 4 is a fragmentary sectional elevation on
line in Fig, 5; Fig. 5 is a plan, and Fig. 6 is an end view from the left in Fig. 4.
Fig. 7 is a diagrammatical view showing the main and shunt circuits and the con-
struction of the solenoid.
Fig. 8 is a plan view of the knock-off lever and its appurtenances on a larger scale
than the principal views; and Fig. 8ª is a cross-section at x 8a in Fig. 8.
Fig. 9 illustrates a form of the terminal drop wherein the contact is made with the

page_text: shank of the drop near the pivotal point, both terminals of the main circuit being
above the warp.
Fig. 10 illustrates a form of the terminal drop wherein the contact is made with
the head of the drop, both terminals of the main circuit being above the warp.
Fig. 11 illustrates a form of the terminal drop where the contact is made by the
head of the drop dipping into a trough of some liquid conductor.
Fig. 12 illustrates a form of the terminal drop wherein the contact is made in a
slot in the head, both contacts being above the warp. Figs. 13 and 14 illustrate
another form of the drop and contact terminal.
W represents the warp-beam of a loom; w the warp-threads; r the lease rods ;
H the heddles; C the cloth beam, and h the weft-hammer. These are common to all
looms. Some of the other features of the loom herein shown are also common in
looms, but these will be referred to in the description which follows.
Each
1 is a terminal drop adapted, normally, to be supported on a warp thread w. These
drops are arranged in one or more series (two series are herein shown) and have the
lever-like form illustrated in Fig. 1. The drops of each series are fulcrumed on a
rod, 2, connected with one pole of a generator, 3, whereby all of the drops thereon
become terminals. The fulcrum rod extends across the loom above the warp.
drop has in its head a slot, 13, to receive the warp-thread on which the drop is
supported, and has a short arm, 1", back of the fulcrum point, to make contact, when
the drop falls, with the underside of the other terminal, 2*, of the electric circuit.
This terminal 2* may be a simple metal rod extending across the loom, as shown, in
the proper position to be put in contact with the shorter arm, la, of the drop, as
indicated in Fig. 1, where one of the drops is represented as having fallen.
The advantage of this form of drop is that its longer arm or head must descend to
a considerable extent before the contact is made with the terminal 2x, whereby a good
degree of slackness in a warp-thread is permissible without risk of stopping the
loom. Another advantage arises from the contact being made with the underside of
the terminal 2*, whereat contact is better assured thau on the top or sides of the
terminal, as these parts are more apt to be covered with a deposit of lint or fluff.
To prevent the terminal drops of a series from flying upward and so becoming
disengaged from their respective warp threads, a light, readily removable strip, 1b,
extends across over their heads, as shown in Figs. 1 and 2. This strip may be plain,
or be corrugated lengthwise to make it stiff as well as light.
When a drop 1 falls, it closes an electric circuit, and this circuit, by exciting an
electro-magnet, causes the armature thereof to put an obstacle in the path of the
vibrating weft-hammer h, thereby causing the latter to stop the loom through the
medium of the same mechanism as that which stops the loom when a weft thread
breaks or fails.
Referring to the left in Figs. 1 and 2, and to the detail views, Figs. 3, 4, 5 and
8,-
K represents the knock-off lever, pivotally mounted on a bracket, B, on the loom
at the end of the breast-beam; and S is the shipper-lever, which is normally engaged
and held by a retaining notch, n, in the bracket B, the said lever S being actuated by
n spring, when released, and adapted to play along a slot in the bracket B. The
knock-off lever simply pushes the shipper-lever free from the shoulder at the notch.
The moving end of the knock-off lever engages a keeper in the weft-fork carrier, F,
which carries the weft-fork, f, and said carrier, mounted in guides on the bracket B,
is adapted to move in a plane at right angles to the plane in which the shipper-lever S
plays. Normally, when a weft-thread is shot, the hook on the rear end of the
weft-fork is raised out of the path of the weft-hammer h, but if a weft thread fails
from any cause, the hook on the rear end of the weft-fork descends into the path of
the weft-hammer, and on the next stroke of this hammer it engages said hook and
drives back the weft-fork carrier F, thus actuating the knock-off lever K, and through
it freeing the shipper-lever S.
✓
0
At the same time the lever K is moved out from under the handle, L (see Fig. 8*),
of a brake-lever, and this allows the brake to be set automatically on a wheel of the

page_text: loom so as to overcome momentum of the parts and arrest the motion of the loom
promptly.
Also, at the same time, the knock-off lever K strikes the take-up lever, T, and
releases the catches in the take-up gears so that the web may slack or run back.
All of this mechanism is common to looms as at present used and is described
here merely because of its close relation to the novel features of the present
application. These latter will now be described.
On the weft-fork carrier F is mounted an electro-magnet, 4, in circuit with the
generator 3 and the drops 1 (see Figs. 4, 5, 6,). The carrier F is slotted to receive
the weft-fork, and the shank of the latter, bearing the hook f¹, may descend in this
slot into the path of the head of the weft-hammer h. On the carrier F, and in this
slot, is mounted a bent spring, 5, the upturned end of which carries the armature, 6,
of the electromagnet 4, above the protruding cores, 4ª, of the magnet. Where the
upright branch of the spring 5 joins the main portion thereof is an angle or shoulder,
5, which, when the armature of the magnet is attracted and drawn down, is depressed
into the path of the head of the weft-hammer h, so that in the forward or operative
movement of the latter it will strike said shoulder 5*, push the carrier F forward, and
acting on the knock-off lever K, release the shipper-lever S and stop the loom. Thus
it will be seen that the weft-hammer may act on either the hook on the weft-fork or
the shoulder on the spring 5, whichever may be depressed into its path, and the
loom will be stopped in either case. But, as before stated, when the knock-off lever K
is shifted by the breaking of a weft-thread, the take-up lever T is actuated; now
when a warp-thread breaks it is not desirable that the said take-up lever shall be
operated, and to prevent this the device now to be described is employed.
In the knock-off lever K is formed a recess, 7 (Figs. 7 and 8), at the point where
this lever is designed to impinge upon the take-up lever T, so that, if this notch or
recess be left open the lever T will enter said recess and not be pressed back by the
knock-off lever, and this is the desired condition when a warp-thread breaks. There-
fore, in order that said recess 7 may be left open, or be closed, as desired, the
following operating devices are employed.
On the knock-off lever is mounted a solenoid or electro-magnet, 8, the core, 8%, of
which is attached to a sliding piece, 9, of any kind, adapted to cover the recess 7,
normally, to an extent sufficient to prevent the lever T from entering thereat, but
capable of being displaced when a current is sent through the coil of the bobbin of
the solenoid or magnet, this coil being in the circuit with the electro-magnet 4 and
the drops 1. Consequently, when a warp-thread breaks and a drop falls, the coil of
the solenoid 8 is excited, its core 8* is drawn in, and the obstructing slide or piece 9
displaced. A solenoid is employed in lieu of an ordinary electro-magnet merely
because a little more movement of its core can be conveniently obtained than with
the armature of a magnet. But this is not material to the invention; an electro-
magnet of the usual kind may be employed as well.
It is found in these warp stop-motions that when a drop falls and closes the circuit,
and a little time must then elapse before the going part of the loom-in this case the
weft-hammer h-can act to release the shipper-lever S, the jarring and vibration of
the loom may again break the circuit at the drop, thus allowing the loom to run on, at
least for several picks. To obviate this defect and, when the circuit shall have been once
closed, to maintain it closed until the lcom is stopped, the present invention provides
a shunt circuit which shunts out the drops, and this shunt circuit is closed by electro-
magnetic force, preferably at the solenoid 8, for convenience. This device is illustrated
in the diagrammatic view, Fig. 7, illustrating the preferred arrangement of the main
and shunt circuits, and the circuit-closer at the solenoid. In this view the main
circuit consists of a conductor wx, leading from one pole of the generator 3 to the
drops, 1, and a conductor, wxx leading from the other pole of the generator to and
through the coil of the solenoid 8, thence to and through the coils of the magnet 4,
and thence to the contact terminal 2*. Consequently when a drop falls and connects
electrically the arm 1* of the lever-drop and the terminal 2*, the magnets 4 and 8 will
be excited; but when the core 8* of the magnet or solenoid 8 is drawn in, it will

page_text: strike a push-pin, 10, which will thus be caused to close a shunt circuit by pressing
one terminal, 11, of said circuit into contact with the other terminal 11*, of said
circuit. The shunt circuit, as here shown, comprises a conductor w¹, leading from one
binding-post, 43, of the magnet 4, to a binding post at the terminal 11, and from a
binding post at the other terminal, 11*, to one pole of generator 3; thus when this
shunt circuit is closed the drops 1 are cut out, but the generator and the two magnets
remain in the circuit which will remain closed until broken by the movement of the
weft-fork carrier F. There is a coil spring 8* behind the core in the solenoid to
return the core and the sliding piece 9 to their normal positions when the circuit
is broken.
F
Figs. 4, 5 and 6 illustrate the means for breaking the circuit when the carrier F is
pushed forward by the knock-off lever K. One of the conductors (as w ) leading to
the electro-magnet 4, terminates in a flat contact-plate or blade, 12, mounted on a
post, 13, on the bracket B, or on some fixed part, said terminal plate being insulated
from the bracket. On the carrier F are mounted two contact-plates, 14, forming
terminals of one end of the magnet coil. Normally, when the loom is running, the
plate or blade 12 is in position between the plates 14, and the contact is perfected;
but when the carrier F is displaced by the weft-hammer, the circuit is broken by the
movement of the two plates 14 out of contact with the blade 12. It is immaterial,
of course,
what sort of circuit-breaker is employed at this point, but that shown is of
an approved form or kind and provides a rubbing contact.
On looms having a warp stop-motion, and the accompanying knock-off lever and
shipper-lever, a brake is employed which is normally held off by the knock-off lever
taking under an overhanging handle on the brake lever, and when the knock-off lever
is displaced, this displacement allows the brake to be set so as to check the momentum
of the rotative parts of the loom. In the drawings, L represents the overhanging head
or handle of the brake lever. When the shipper-lever S is moved to its retaining
notch for setting the loom in motion, it finds this head L in its path (the brake being
set) and carries it back with it so as to release the brake; and when the lever S shifts
in stopping the loom, the brake lever follows it up and sets the brake. But at times
it is desirable that the loom be run backward by the weaver, and to do this con-
veniently he must take off the brake. Therefore he grasps the handle L of the brake
lever and draws it back; as it swings in a curve, the head is highest when the brake is
off. In order to hold it off, this invention provides a swing arm, 15, pivotally mounted
on the bracket B and its free end 15* adapted to be pushed in under the handle L, to
prevent it moving into the braking position. On its inner edge, adjacent to the
knock-off lever K, the swing arm 15 has a bevelled or cam surface, 15*, which is
impinged upon by the lever S, in moving this lever into position to set the loom in
motion, in such a manner that said lever throws the arm 15 outward and from under
the handle L of the brake.
In Fig. 4 is shown a pin, 16, across the slot in the weft-fork carrier F, and a
shoulder or projection, 5b, on the spring 5 to engage said pin when the shoulder 5ª on
the spring is in operative position (as shown in this figure), so as to provide an
abutment for pushing back the carrier. This pin and shoulder are not, however,
essentials.
Figs. 8 and 8 show the parts in the position they occupy when the loom has been
stopped by the breaking of a warp-thread, and when the weaver has drawn back the
handle L of the brake and pushed the end 15* of the arm 15 under it. It may be
said here that when the loom is running and the brake, of course, off, the knock-off
lever K (see Fig. 8) will take under a shoulder, L, below the handle L, and thus hold
the latter against movement.
The arm 15 is shown as notched or recessed to provide room for the take-up lever T,
but this is only because it is convenient to place this arm in such a position that it
must be cut away to allow the take-up lever to project above it. Any form of slide 9
may be employed so long as it will, in one position, bar the entry of the take-up
lever to the recess or notch 7.

page_text: Preferably each lever-like drop 1 will have in it a circular hole or closed opening
whereby it is mounted or fulcrumed on the rod 2, but it may be advisable to have
open, inclined slots in them to take over said rod, so that they can be the more
readily lifted off. Such an open, oblique slot is indicated by dotted lines in Fig. 1.
Figure 9 shows a form of the drop where the shank of the drop 1 makes contact,
when the drop falls, with a terminal rod 2* close to the pivot point of the drop, thus
allowing considerable movement of the slotted head of the drop without contact.
Figure 10 shows a form of the drop 1 wherein the head of the drop makes the
contact with the terminal rod 2* above the warp. This construction does not give as
inuch movement to the drop as that shown in Figs. 1 and 9, and the contact is not
made on the underside of the terminal 2*, but good results may be attained by its
use.
Fig. 11 shows a construction and arrangement of the drop wherein the head of the
drop makes contact with a liquid in a trough forming the terminal 23. In this view
the fulcrum or binging rod 2 is below the warp.
In the construction of Fig. 10, the upward movement of the drop 1 above the
normal elevation, is prevented by a wire, 18, extending across the loom. In Fig. 11
this rise is prevented by a back-stop, 19, and in Figs. 9 and 12, it is prevented by the
plate or strip which rests on the stops, as in the construction of Fig. 1.
It will be noted that in all of the forms of drop illustrated some portion of the
fallen drop remains above the level of the warp and the warp thread adjacent to the
broken one remains embraced between the two drops. This is important in facilitat-
ing the mending of the warp and the raising of the fallen drop. Where the contacts
at the drop are both below the warp, this result is attained by forming an upwardly
projecting part on the head of each drop.
Fig. 13 illustrates a drop in which both contacts are made when the drop falls, the
drop not being hinged. This drop has somewhat the form of an arrow.
Fig. 14 illustrates the form of contact-rod 2* preferred. The rod is usually fixed in
the side-frames of the loom and the vibration of the frame is liable to bend or buckle
it so that the drops will not fall fairly on it. To avoid this, it is preferred to slip over
the rod a tube, 2b, (in Fig. 14) which has bearings on the rod only near the ends of
the same in the loom-frame. This tube provides a straight and true contact surface.
This form of contact terminal is seen in Fig. 1.
In order to steady the bar 1° that rests on the drops, this bar may have loose
bearings in holders, Q, as seen in Fig. 9, which have open hinge-hearings on the
rod 2, on which the drops are hinged. There will be a holder at each end of the bar 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 correspondent, I declare that I am aware that metallic drop devices arranged
to rest upon an unbroken thread and on the fracture of that thread to fall and make
contact with the contact piece below the threads, have been known, and I make no
claim for such, but my device differs from these in that it makes contact above the
threads, also this contact is out of the line of descent of that portion of the drop
which normally rests on the unbroken thread a projection on the drop situate above
the main body of the drop or at a different radial angle from the part resting on the
thread coming in contact with a contact piece above the threads, such contact piece
being either outside the drop, or passing through a closed slot in the drop. One
advantage obtained by this arrangement is that while all the threads are intact there
is a continuous alignment above the threads, but on the breaking of the thread, the
part making contact above the line falls out of alignment and acts as an indicator to
show the weaver the exact position of the broken thread whereas none of the drop
devices making contact below the thread act as an indicator in this way, the align-
ment being perfect with an almost imperceptible indentation therein unobservable
except by careful looking, and that what I claim is :-
An electrical warp-stop-motion having eirenit-terminals-adapted-to-be-closed
by-the-breaking of a warp-thread, said terminals--being--situated-abovs-the-warp-
threads, substantially-as-and-for-the-purposes-set forth.

page_text: 2. An electrical-warp-stop-motion-for-looms-having-terminal drops-supported-by
the-warp-threads-and-having-the-eirenit-elosing-contacts-situated above said warp-
threads;-substantially-as-and-for-the-purpose-set-forth.
3. A-stop-motion-for-looms-having-a-lever-like-terminal-drop,
and-a-contact
terminal-in-position--to--be--put in-contact--with--the-shorter-arm-of-the-said-drop
when--the--longer-arm--thereof-talls-from-the-breaking-of-its-supporting_thread;
substantially-as-set-forth.
4. A-stop-motion-for-looms,-having-a lever-like terminal-drop,-the-longer-arm-of
which is supported-on-a-warp--thread;-and--a-contact-terminal--situated--at-a-level
above-that-of-the-shorter-armi-of-said-drop-and in-position-for-the-said-shorter-arm
to-strike-said-terminal-on--its-under-side-when-the-drop falls-from-the-breaking of
its-supporting-thread-substantially-as-set-forth.
1. An electrical stop-motion for looms, having a series of lever-like drops 1,
fulcrumed on a. rod 2, extending across and above the warp, and a contact terminal
rod 2x, also extending across and above the warp, said terminal 2x being in the
upwardly curved path traversed by the shorter arm 1° of the drop when the latter
falls from the breaking of its supporting warp thread, all the contacts being per-
manently above the line of threads substantially as set forth, and subject to the
disclaiming clause.
26. An electrical stop-motion for looms, having a fulcrum-rod 2 above and
extending across the warp, a series of lever-like drops 1, fulcrumed on said rod, a
strip 1, over the heads and longer arms of said drops, and a contact terminal rod
extending above and across the warp and in the path traversed by the shorter arms
of the drops when they fall from the breaking of their supporting threads.
37. In-an-electrical-warp-stop-motion-for--looms,-the-combination-with-a-main
eleetrie-eirenit-ineluding a generator-and-drops-adapted-to-close-said-eirenit
warp-thread-breaks-and-a-drop-falls,-means-controlled-by-a-magnet-for-stopping
loom-the--said--magnet,-the-coil-of-which is in said--main--eireuit,-a-shunt-eirenit
which--ents--out-the--drops,-and-an--electro--magnetie-device-in-both-the-main-and
when a
the
shant-eireuits--adapted, when--e--drop-closes-the-main--cireuit,-to-close--said--shunt
eirenit, substantially-as-set-forth.
48. In-an-electrical--warp--stop-motion-for-looms, the-combination-with-a-main
eleetrie-eireuit, including a generator, cireuit-closing--drops--supported-on-the-warp
threads,-and-magneto-mechanical-means-controlled-by-said--eirenit-for-stopping the
loom,-of-a-shunt-eireuit-which-euts--out-the--drop,-and-electro-magnetic-means,-con-
trolled-by-said-main-circuit-which-eloses-said-shunt circuit-whenever the-drop-eloses
the-main-eirenit,-substantially-as-set-forth.
3 5 9. An electrical warp stop-motion for looms having a series of drops supported
on the warp threads and adapted to close an electric circuit, when a warp thread
breaks, and having electrically actuated means, energized by the closing of said
circuit by the drop, which shunt out the drop when the circuit is closed, substantially
as set forth.
6-16-ln-an-electrical-stop-motion-for-looms,-the--combination-with-a-warp--stop-
motion;-comprising-an-electric-eirenit,-a-generator-in-said-eireuit;-means-for-closing
a-break-in-said-eirenit-when-a-warp-thread-breaks,-and-electro-magnetic-means-con-
trolled-by-said-eirenit-which-causes-a-going-part-of--the-loom-to-actuate-the-knock-
off-lever-and-thus-free-the-shipper-lever--the-said-going part, the shipper-lever,-the
knock-off-lever-having-in-it-a-recess-7,-opposite-to-the-take-up-lever T-and-the-said
slide-controlled-by-said-electro-magnetic-means and normally covering suid reeess-7,
take-up-lever,-of-an-electro--magnetic-mechanism;-controlled-by-said-eireuit,-and-a
and-aetuated-to-uneover-said-reeess-when-said-eireuit-is-closed;-substantially-as-and
for the-purposes-set forth.
711. In-an-electrical-stop-motion-for-looms,-the-combination-with-an--eleetrie
eirenit ineluding--a-generator,--means-for-closing a normally open-break-in--said
eircuit when a-warp-thread--breaks,-the-shipper lever S, the knock-off lever--K,
adapted-to-release-the-shipper-lever,-the-weft-hammer-h;-the-weft-fork--carrier--F,
connected-with-the-knock-off lever,-an-electro-magnet--4--mounted--on-said--carrier

page_text: and-in-said-eirenit,-its-armature,-and-means-substantially-as-described, actuated-by
said-armature-for-interposition-in-the-path-of-the-vibrating-weft--hammer-when-said
magnet-in-excited, whereby-the-weft-hammer-actuates-the--carrier- F-when-a-warp
thread-breaks, substantially-as-set-forth.
4. 12. In a stop-motion for a loom, the combination with an electric circuit
including a generator and means for closing a normally open break in said circuit
when a warp thread breaks, of the weft-fork carrier F, the weft-hammer h, the
electro-magnet 4 in the said circuit, its armature 6, mounted on the spring 5, and
the said spring, provided with a shoulder 5ª for the weft-hammer to impinge upon
when the armature is attracted, substantially as set forth.
9-13. In-a-stop-motion-for-looms, the-combination-with-the-supporting bracket,
of-the-knock-off-lever--mounted-thereon, the shipper-lever,--and--the--brake--lever
having-a-handle-L-overhanging-the-knock-off lever,-of the-arm-15,-mounted-on--the
supporting-bracket-and-provided-with-a-head-at-its-free-end-15x-to--take-under-the
said-handle--L--and
set-forth.
a-cum--15ª-in-the-path-of-the-shipper--lever;-substantially as
14. An electrical warp stop-motion-for-looms--having-a-plurality-of--terminal
drops-supported by the respective warp-threads and adapted to fall-into-contact-with
a fixed terminal-contact-when-said threads-break,-and-the-said fixed-terminal contact
consisting of-a-fluid-capable-of-conducting-electricity, substantially-as-set-forth.
15.--The construction of the-contact-drop-adapted-to-make-electrical-contact-with
the-terminal-contact--beneath-it--near the pivotal-point-of-the-drop,-as-shown-and
described-with-reference-to-Figure-0-of-the-accompanying drawings.
16. The construction-of-the-contact--drop--adapted to make--electrical--contact
with-a-liquid-terminal, as-shown-and-described-with-reference-to-Figure-1,-of-the
accompanying-drawings.
5. 10 17. The construction of the contact drop with a-slot an open slot (1*) and a
closed slot through which the terminal (rod 2x) passes, as shown and described with
reference to Figure 12 of the accompanying drawings, and subject to the disclaiming
clause.
6. 18. The construction of the contact drop wherein both contacts, with the
terminals 2 and 2*, are made above the warp when the drop falls, as shown and
described with reference to Figure 13 of the accompanying drawings,
7.12 19. The construction of the terminal contact 2x of a bar or rod extending
across the loom-frame and having on it a loose tube, 2b, with bearings on the said bar
only at or near the ends of the latter, as shown and described with reference to
Figures 1 and 14 of the accompanying drawings.
Dated this 27th day of August 1898