Improvements in and connected with Warp Stop Motions of Looms for Weaving.
Year: 1897

page_text: Date of Application, 23rd Nov., 1897-Accepted, 19th Feb., 1898
COMPLETE SPECIFICATION.
Improvements in and connected with Warp Stop Motions of Looms
for Weaving.
(A communication from abroad by THE DRAPER COMPANY of Hopedale, County of
Worcester, State of Massachusetts, United States of America, Manufacturers).
I, ALFRED GEORGE Brookes, of 55 & 56, Chancery Lane, in the County of London,
Chartered Patent Agent, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
This invention relates to looms for weaving, and one part of the invention has
for its object the production of novel warp-stop motion mechanism, wherein the
breakage or undue slackness of a warp thread is made effective through the opera-
tion of a stop-motion actuating detector and suitable intervening mechanism to
release the usual shipper lever and thus stop the loom.
The detectors may be utilized as heddles, or they may be used entirely indepen-
dent of the shedding mechanism of the loom, both adaptations or embodiments of
the invention being shown herein.
In the former case the reciprocating heddle frame is provided with a series of
metallic heddles, each having a warp eye and a longitudinal opening through which
latter a supporting bar is extended, the heddles having a limited vertical move-
ment independently of the heddle frame, and when the loom is running properly,
the heddles in the lower plane of the shed will be supported by their warp threads.
Upon breakage or undue slackness of a warp thread, its heddle will drop into
abnormal position to engage and stop the movement of a normally rocking or
vibrating feeler, such stoppage setting into operation devices for releasing the
shipper lever.
If the detectors do not also constitute heddles, as in the second case, they will
be mounted independently of the shedding mechanism but will co-operate with
the feeler as before.
In adjusting the movement of the feeler, considerable trouble has been
experienced, more particularly as regards the spring or springs which have formed a
part of the connections between the feeler and the positively driven means for
operating it, for if the adjustment of the spring makes it too strong there is great
danger of bending or otherwise injuring the dropped detector, and if the spring
is too light, the releasing mechanism for the shipper lever may fail to act promptly
or at all.
These objectionable features have been overcome by this invention by entirely
discarding the use of any spring or yielding connection whatever between the feeler
and its vibrating mechanism, whereby the operation of the stop-motion mechanism
is rendered more positive and accurate, without any of the nicety of adjustment
now absolutely necessary to produce good work.
The second object of the invention relates to the governing of the vibrating
feeler in its actuating position by the set of the harness cam.

page_text: In other warp stop motion devices the set of the feeler has been independent of
the harness cam, so that a change in the set of the harness cam would be liable to
cause improper operation of the feeler.
Weavers find it necessary in order to produce certain effects in the face of the
cloth to beat up the filling with the sheds more or less close, and it thus becomes
necessary to so construct the warp stop motion that it will be governed in its action
to a certain extent by the harness cam, in order that a change in the set of the
cam will effect a corresponding change in the time of operation of the feeler.
In this invention such object is attained by so connecting the feeler actuating
device to the harness cam that the feeler will always operate properly when the
detector heddles are properly lowered, the proper lowering of such heddles depend-
ing on the harness cam.
Fig. 1 in front elevation and partly broken out represents a sufficient portion
of a loom to be understood, with one form of the novel warp stop-motion applied
thereto, the detectors being also utilized as heddles.
Fig. 2 is a partial sectional view thereof on the line - Fig. 1, looking to the
left.
Fig. 3 is a similar view, but with the lay fully back and with the heddles in
normal position, whereas in Fig. 2. a heddle has dropped and the lay is on its
backward throw.
Fig. 4 is a detail to be referred to.
Fig. 5, partially in section and elevation represents a loom with the warp stop
motion actuating detectors mounted independently of the shedding mechanism.
Fig. 6 is a partial front elevation of the loom shown in Fig. 5, taken between the
lay and the harness mechanism with the latter omitted.
Fig. 7, partially in section and elevation, represents a loom with the warp stop
motion actuating detectors serving also as heddles, but with another form of
actuating means for the feeler.
'
Fig. 8 is an enlarged detail view of a portion of said actuating means.
Fig. 9 is a front elevation of a portion of the cam shaft with the feeler actuating
means, whereby the movement of the latter is governed by the set of the cams,
and
Fig. 10 is an enlarged detail to be referred to.
The loom frame A, breast beam A¹, lay A², lay sword A³, the crank shaft C and
the shipper lever B, held normally in the usual notch plate B', and controlling
suitable belt shipper not shown, are and may be all as usual in looms.
a
The harness frames, consist each of a top cross bar a, bottom bar a', Fig. 1,
and rigidly attached side bars a², Figs. 1, 2 and 7, said frames being connected
by flexible bands or straps as with sheaves a fast on a rotatable shaft as above them.
The usual harness mechanism for actuating the frames to give them their
reciprocating motion, is omitted in Figs. 1 to 6 of the drawings, for the sake of
clearness.
In Figs. 1, 2, 3 and 7, the warp stop motion actuating detectors are utilized as a
series of heddles b, preferably composed of thin, flat strips of metal, have each a
warp eye b¹ and an enlarged slot 62 at or near its upper end, to receive the support-
ing cross bar a, said bar being of less depth than the length of the slot .
A plate c is extended across the loom in front of and adjacent the vertical path of
the front series of detector heddles, as clearly shown in Figs. 2 and 3, and a second
plate or bar c', parallel thereto is extended across the loom back of and adjacent the
path of the second or rearmost series of heddles, the two forming an open,
stationary guide into which the lower ends of the detector heddles enter loosely.
A rock shaft d is extended across the loom below the open guide, said shaft
having fast thereon arms d¹ to which is bolted or otherwise secured a feeler, shown
as a piece of angle iron f, the overhanging flange thereof being deeply notched
along its edge, clearly shown in Fig. 4.
These notches f¹ are in the direction of the length of the warp, the sides of the
notches being parallel for the greater part of their length, as at f20, Fig. 4, and

page_text: flared or outwardly bevelled at the entrance of each notch, as at f, to facilitate
the entrance of the dropped detector into the notch.
The notches are of such depth that preferably a detector will be embraced for
about one half its width, effectually preventing twisting or bending thereof, and
obviating any serrating or notching of the back bar against which the detector is
pressed by the feeler.
The flaring entrances of adjacent notches are so located that the oppositely
bevelled sides intersect, as at f, so that a detector will be guided into one or other
of the notches at opposite sides of the dividing wall.
The feeler is thus in effect a comb-like member, the tines of which have pointed or
bevelled ends and parallel sides.
This feeler is normally swung or vibrated back and forth below the guide, and
below the lower ends of the heddles, but should a heddle drop, owing to breakage or
slackness of its warp thread, as shown at 6, Figs. 1 and 2, the vibrator in its
forward movement will be engaged and stopped thereby, as clearly shown in Fig. 2,
the front side c of the guide engaging and holding the front edge of such dropped
heddle.
A hub d provided with a bent arm d³ is shown as adjustably secured to the
rock shaft d by a set screw d*, near the side of the loom at which the shipper lever
is located, said arm d³ extending towards the front of the loom and having an
enlarged end provided with a slot d'; and the arm is then bent laterally.
A link dis pivoted at its upper end at de to the lateral bend of said arm, to be
thus pivotally connected eccentrically with the rock shaft, and at its lower end it is
longitudinally slotted at d to be entered by a laterally extended stud e on a stand e¹
rigidly secured to the lay sword A³.
The link d is preferably enlarged near its lower end or provided with a weight w,
to control the forward or operative movement of the feeler by gravity, and as the
lay moves back and forth it will oscillate the link on its pivot d
Owing to the curved path of movement of the stud e the link will be lifted as the
lay moves forward, and lowered as the lay moves back, the extreme position of
the link and the lay when back, being shown in Fig. 3.
When the link is raised it will act to rock the shaft d and positively swing the
feeler backwards in the direction of arrow 10, Fig. 3, and when the link is
lowered the shaft d will be rocked in the opposite direction by the weight of the
link and its enlargement w, the latter normally keeping the upper end of the
slot d on the stud e.
When, however, the feeler engages a dropped heddle the movement of the rock
shaft is stopped, and then the link is merely swung on its pivot do, the stud e moving
in the slot d².
A bell crank lever h, h', is pivoted at h² on the loom frame A, the arm / resting
against the inner side of the shipper lever B, Figs. 1 and 2, the arm h¹ being
pivotally connected to a slide rod h³ bent upwardly at its inner end to enter and slide
in a bearing on the main frame.
The slide rod has an ear 5 erected thereon near the bearing, to which is pivoted
a dog k, adapted at times to be engaged by a cooperating bunter k¹, shown as rigidly
secured to a suitable part of the lay.
The position of the dog is controlled by and in accordance with the movement
of the feeler f, and for this purpose a link is pivoted on the dog and depends
therefrom, the lower end of the link being longitudinally slotted at k³, adjacent the
slotted end of the arm. d³.
A stud m having a head or shoulder m¹ is held in adjusted position in said slotted
arm by a set nut m³, the other end of the stud entering the slot and bearing
against its upper end.
When the feeler f is swung fully forward, as in Fig. 3, meeting no obstruction,
the weight of the link will turn the dog & down out of the path of the bunter,
and when the feeler is swung in the opposite direction the dog will be turned up
above the bunter k¹.

page_text: Should the feeler engage and be stopped by a dropped heddle in either series,
however, as in Fig. 2, the stud m will be held by arm d³, in such position that the
dog will be engaged by the bunter k¹ as the lay moves back, and as the lay
completes such backward throw the bunter pushes the dog and the slide rod h³
hack, turning the bell crank lever until its arm h presses the shipper lever out of its
holding notch, thereby stopping the loom, the bell crank lever thus acting as a
releasing device for the shipper lever.
The slot in the link allows such rearward movement of the dog, the link
being moved thereby longitudinally and relatively to the stud m.
The dog and connections between it and the feeler constitute controlling means
for the shipper lever releasing device.
It will be observed that there is no spring or yielding device included in or form-
ing a part of the connections between the feeler and the means to vibrate it, said
feeler being positively swung in one direction and in the other by gravity, and that
no nice adjustment is required; for it is only necessary that the vibrator swings
through a proper arc, and that such swing will normally move the dog out of the
path of the bunter.
One convenient and simple form of releasing means for the shipper lever is
shown, controlled by the dog.
Referring to Figs. 5 and 6, the detectors 620 are shown as slotted at 21 to receive
a supporting bar a20, secured to brackets B20 on the loom sides, a second slot 623 in
each detector receiving two warps, one in each shed, the detectors being mounted
independently of the harnesses H, H', which may be of any usual construction, the
detectors being vertically movable relative to the bar a30.
Two plates or bars c and c¹, are substantially the same as herein described extend-
ing across the loom and forming the open stationary guide for the lower ends of the
detectors, the edge foot of the plate can be and preferably milled the better to
engage the front edge of a dropped detector.
The rock shaft d, the arms d' thereon, and the feeler f bolted thereto and
notched at f, are as described, the feeler being normally swung or vibrated below
the lower ends of the detectors, but being engaged and stopped by a dropped
detector due to breakage or undue slackness of its warp thread in the upper plane
of the shed.
An arm do fast on the rock shaft, has pivotally connected thereto at №6º a link №50
slotted or forked at d70 to be entered by the stude on the stand e', secured to the lay
sword A³, as before described, the link having near its end an enlarged or weighted
portion w20.
As the lay moves forward, the link is lifted, and lowered as the lay moves back,
rocking the shaft d and swinging the feeler f back and forth except when a dropped
detector is engaged by the feeler, the operation being practically the same
described when the detectors are utilized as heddles.
as
The bell crank lever h, h¹, the slide rod h³, bent to slide in a bearing h¹ on the
main frame, and the ear h5 on the slide-rod, having a pivoted dog k to be at times
engaged by the cooperating bunter rigidly attached to the lay, are substantially
as before described.
In Figs. 5 and 6, the dog k has pivoted thereto a link 20, depending therefrom
and slotted at 30 to be entered by a stud m10 on an arm m¹ fast on the rock shaft d,
so that when the feeler f is swung fully forward the arm ms will descend, permit-
ting the weight of the link 20 to depress the dog k out of the path of the bunter,
and when the feeler is swung in the opposite direction the dog will be turned up
above the bunter.
If the feeler engages and is stopped by a dropped detector the rock shaft d will
be held so that the link 20 cannot depress the dog, and the bunter will engage it as
the lay completes its backward throw, acting through the slide rod h³ to release
the shipper lever and stop the loom.
The construction illustrated in Figs. 7 to 10 inclusive show another form of the
first part of the invention, as well as the second part thereof,

page_text: Referring to Fig. 7, the two series of detectors b are shown as separated at their
lower ends by a wide thin plate or bar extended across the loom, and in front and
at the rear of the said separator are mounted in suitable bearings like rock shafts (30,
e30, to which by suitable rigid arms d, e, are attached the feelers (32, 33, shown
as angle bars and vibratable towards and from the separator below the two series
of detectors.
When one of the said series is lowered, the warp threads thereof being in the lower
plane of the shed, the feeler for such series will normally vibrate below them,
but should a detector drop it will then be in the path of and engage the feeler and
stop the vibration of the latter, the detector being then between the separator and
feeler.
In order to prevent undue twisting of the detector, the separator or the feeler may
be notched, as shown in Fig. 10, the depth of the notches 100 being greater than one
half the width of the detector, to firmly engage and hold the upright edge thereof.
The detectors are loosely supported and are liable to be more or less inclined
to the length of the warp threads, and unless some such provision is made as herein
shown, or as has been shown in Fig. 4, the edges of a dropped detector would be
so engaged as to still further twist the detector at its proper plane, resulting in a
bend in the detector or splitting of its end, in either case failing to stop the loom.
Obviously, if substantially the full width of a detector is necessary to stop the
feeler at the proper point to effect stoppage of a loom, the inclination of the detector
will permit the feeler to move too far to stop the loom.
With deep notches it is impossible to bend the detector beyond the slight amount
between the points of the teeth, and in the construction shown in Fig. 10, the
inclined sides of the teeth guide the edge of the detector into proper position and
then the greater portion of the width of the detector is supported by the side of a
tooth should the engaged detector be inclined slightly to one or the other side.
The cam shaft C has adjustably secured thereto the usual harness cams (10, C20,
and said cam shaft also has mounted thereon a sleeve f50 adapted, as shown in Fig. 9,
to be connected with the hub 88 of one of the harness cams.
Two like but diametrically set cams m40, 40, are secured side by side on the
sleeve 50, pins or projections m¹1, n¹¹, being located on the outer sides of the
said cams respectively.
A rock shaft g25, having a depending arm 926, is mounted in the loom frame, and
to the depending arm are pivoted the outer ends of levers m, n, provided respec-
tively with suitable rolls or studs m³, n3 to rest on the peripheries of the
cams m40, 40, while links m, n, connect the levers with arms 33 and 33 of the
feeler rock shafts 30, 30.
Rotations of the cams will operate to alternately raise and depress the levers m₁,
n2, the raising of a lever acting through its link to rock the shaft and move its
attached feeler away from the separator, while the weight of the lever and link will
rock the shaft to move the feeler towards the separator when the low portion of the
actuating cam is engaged by the roll on the lever.
The inner ends of the levers are bent or curved into substantially sickle shape
as at m, n, with reduced extremities, leaving shoulders m5, 45, respectively.
Now when a lever roll is on the low part of its cam, as for instance the lever n48,
Figs. 7 and 8, the shoulder n45 will be below and out of the path of movement of
the lugn, but when a dropped detector engages a feeler, the latter is held from
vibrating and maintains its lever lifted, with its shoulder in the path of the
projection on its cam.
If a dropped detector should, for instance, engage the feeler 32, then the lever m¹³
would be held in the position shown, and rotation of the sleeve f50 in the direction of
the arrow Fig. 8, would bring the cam projection m" into engagement with the
shoulder m5, moving the lever longitudinally inwards and rocking the shaft g23.
This rock shaft has fast thereon a bent arm g27 connected by a link 28 with an
arm 29 of a short rock shaft g, mounted below the holding plate for the shipper

page_text: lever, so that the knock off arm 931 fast on the short rock shaft can engage the
shipper lever B.
When the rock shaft is rocked as described, the knock off arm 931 is swung
against the shipper lever to release it and thereby operate the usual belt shipper
to stop the loom.
When the actuating projection on one of the cams m40 or no has completed the
movement of the lever longitudinally it will pass from the shoulder of the lever and
release the latter, and if the feeler rock shaft should stick upon the return throw of
the vibrator, and thus hold up its lever to be moved longitudinally by the cam,
the loom would be stopped were it not for the extensions beyond the
shoulders m, n15.
The cooperating actuating cam-lug will engage such extension and depress the
lever positively, giving it a start usually sufficient to carry the shoulder out of the
path of the lug, but if not the loom will be stopped automatically and the binding
can be remedied.
The movement of the vibratable feeler in this construction is effected in one
direction by gravity, viz:-towards the detectors and its movement in the other
direction away from the detectors is effected positively.
The second object of the invention relates to the governing of the vibrating
feeler in its actuating position by the set of the harness cam, so that a change in the
set of the harness cam will effect a corresponding change in the time of operation
of the vibrator.
Weavers find it necessary, in order to produce certain effects in the face of the
cloth, to beat up the filling with the sheds more or less closed, and it thus becomes
necessary to so construct the warp stop motion that it will be governed in its action
to a certain extent by the harness cam, and the second object of this invention is
herein attained by so connecting the feeler actuating means to the harness cam that
the feeler will always operate properly when the heddles are properly lowered,
the proper lowering of the heddles depending obviously on the harness cam.
The hub 88 of one of the harness cams as shown in Fig. 9, is suitably secured or
connected with the sleeve f50, on which are mounted the feeler actuating cams m40, 1230,
the harness cams being secured in adjustable manner to the cam shaft by suitable
bolts or set screws in usual manner.
A locking connection is thus effected between the harness cams and the sleeve,
so that any change in the set of the cams on the shaft C will effect a corresponding
change in the angular position of the sleeve, on the hub.
Having now particularly described and ascertained the nature of the said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
1. The use, in a loom, of the lay, a series of warp-stop motion actuating detectors
independent thereof and adapted to drop into operative position upon failure of the
warp threads, a vibrating feeler mounted in stationary bearings independent of the
lay, a weight operatively connected with and to move said feeler towards and to
be stopped by engagement with a dropped detector, means to positively move the
feeler away from the detectors, and stopping mechanism for the loom, rendered
operative by stoppage of the feeler due to a dropped detector.
2. The use, in a loom, of a lay, a series of warp-stop motion actuating detectors
independent of the lay and adapted to slide vertically, and each having a warp eye,
a stationary guide for the lower ends of the detectors, a vibrating feeler mounted
independent of the lay, a weight connected with said feeler to move it by gravity
towards and to engage and be stopped by a dropped detector, means connected with
the lay to positively rock the feeler in the opposite direction or away from the
detectors, stopping mechanism for the loom, and connections between it and the
feeler.
3. The use, in a loom, of the lay, a series of metallic warp-stop motion actuating
detectors adapted to slide vertically and controlled by the warp threads, a station-

page_text: ary guide for the lower ends of the detectors, a feeler mounted independent
of the lay, a connected weight to move the feeler by gravity towards and to engage
a dropped detector due to breakage or undue slackness of its warp thread, means,
including a link, positively oscillated by the lay, to retract the feeler from the path
of movement of the detectors, and stopping mechanism for the loom, operative upon
stoppage of the feeler by a dropped detector.
4. The use in a loom, of the lay, a heddle frame provided with a cross-bar, and a
series of metallic heddles adapted to slide vertically on and independently of said
bar, and a stationary guide for the lower ends of the heddles, a rock shaft indepen-
dent of the lay, a feeler vibrated thereby to engage the end of a detector in abnormal
position due to breakage or undue slackness of its warp thread, a depending longi-
tudinally slotted link pivotally connected eccentrically to said rock shaft, to rock
the latter towards the heddles by its weight, a reciprocating actuator for the link,
mounted on the lay and entering the longitudinal slot, whereby the link will be
oscillated and moved longitudinally against its weight, such longitudinal move-
ment positively rocking the shaft to move the feeler away from the heddles;
stopping mechanism for the loom, and connections between said mechanism and the
feeler.
5. The use in a loom, of the lay, a cross-bar, and a series of longitudinally slotted
metallic warp detectors adapted to slide vertically on and independently of said
bar, a vibratable feeler mounted independently of the lay, to engage a dropped
detector, a depending weighted link pivoted eccentrically to said feeler, and having
a longitudinal opening therein, a lug movable with the lay, to enter said opening,
whereby said link will be oscillated and moved upwards to retract the feeler on
one stroke of the lay, the weight of the link depressing it and moving the feeler
towards the path of the detectors on the other stroke of the lay, and stopping
mechanism for the loom, operative upon stoppage of the feeler by a dropped
detector..
6. The use in a loom, of the lay, a heddle frame provided with a cross bar, and
a series of metallic heddles adapted to slide vertically on and independently of said
bar, a feeler mounted independent of the lay and heddle frame, a connected weight
to move it towards and to engage a dropped heddle, means to positively retract said
feeler, a shipper lever, a releasing device therefor, a controller for said device,
rendered operative by stoppage of the feeler, and actuating connections between said
controller and the feeler.
7. The use in a loom, of the lay, a heddle frame provided with a cross-bar, and
a series of metallic heddles adapted to slide vertically on and independently of
said bar, a stationary guide for the lower ends of the heddles, a gravity actuated,
vibratable feeler mounted independently of the lay, to engage a dropped heddle,
means operated by movement of the lay to retract the feeler positively, and
stopping mechanism for the loom, including a dog and cooperating bunter, and a
connection between the dog and feeler, whereby the former is placed in operative
position by stoppage of the feeler.
8. The use in a loom, of the lay, a series of warp stop motion actuating detectors
having a vertical movement controlled by the warp threads, a reciprocating feeler
independent of the lay, a weight connected with the feeler to move it by gravity
towards and to engage a detector dropped by breakage or slackness of its warp-
thread, means actuated by the lay to retract the feel or positively, and stopping
mechanism for the loom, operative upon stoppage of the feeler by a dropped detector.
9. The use in a loom, of a series of vertically movable warp-stop motion actuating
detectors, a vibrating feeler moved by gravity towards them and to be engaged and
held by a dropped detector, a shipper lever, and a releasing device therefor, and
controlling means for said device, including a rotating cam having a projection
thereon, and a shoulder lever fulcrumed on a part of said releasing device and
connected with the feeler and cooperating with the cam, to positively raise said
lever on its fulcrum and move the feeler away from the detectors, stoppage of the
said feeler holding the lever raised with its shoulder in the path of and to be engaged

page_text: by the cam projection, to thereby move the lever longitudinally and operate the
releasing device.
10. The use in a loom, of a series of vertically movable warp stop motion actuat-
ing detectors, a vibrating feeler moved by gravity towards them and to be engaged
and held by a dropped detector, a shipper lever, and a releasing device therefor, and
controlling means for said device, including a rotating cam having a projection
thereon, and a lever connected with the feeler and normally rocked by the cam,
said lever having a downturned extension thereon to be engaged by the cam projec-
tion upon accidental stoppage of the feeler, to thereby depress the lever and effect
movement of the feeler.
11. The use in a loom, of a series of vertically movable warp stop motion actuat-
ing detectors, a vibrating feeler moved by gravity towards them and to be engaged
and held by a dropper detector, a shipper lever, and a releasing device therefor,
controlling means for said device, including a rotating cam having a projection
thereon, and a lever connected with the feeler and normally rocked by the cam, said
lever having a shoulder, and a downturned extension to be engaged by the cam
projection upon accidental stoppage of the feeler, to effect movement of the latter,
stoppage of the feeler by a dropped detector bringing the shoulder into the path
of said projection, to thereby move the lever longitudinally and operate the
releasing device.
12. The use in a loom, of a series of stop motion actuating detectors vertically
movable by the warp threads, a feeler moved by gravity towards said detectors,
to be engaged and held by one in abnormal position, a shipper lever, and releasing
mechanism therefor, controlling means for said mechanism, comprising a rotating
cam, a normally vibrated lever pivotally mounted on said mechanism and directly
connected by a link with and to move the feeler away from said detectors by engage-
ment with the cam, and a continuously rotated actuator to engage the lever when
held from vibration by the feeler, and move the lever longitudinally to operate the
releasing mechanism.
13. The use in a loom, of a series of flat warp stop motion actuating detectors
vertically movable by the warp threads, a stationary bar to act against one longi-
tudinal edge of a detector in abnormal position, a feeler having a deeply notched
edge to engage the adjacent longitudinal edge of a dropped detector, said notches
being deeper than one half the width of the detectors, to prevent the latter from
twisting out of a notch when engaged and backed against the bar, the sides of the
notches inwardly converging to guide the detector to the bottom of a notch, and
means to vibrate the feeler.
14. The use in a loom, of a series of flat stop motion actuating detectors vertically
movable by the warp threads, and a vibratable feeler having a notched acting edge,
to engage the adjacent longitudinal edge of a dropped detector, said notches having
inwardly converging sides to guide the detector to the bottom of a notch, the
depth of the notches being greater than one half the width of the detector, whereby
the latter is prevented from twisting out of a notch when engaged by the feeler.
15. The use, in a loom, of a series of warp stop motion actuating detectors
movable into operative position by breakage or undue slackening of the warp
threads, a feeler to engage and be held by a dropped detector, mechanism to
vertically reciprocate said detectors, means to normally rock the vibrator, and con-
trolling connections between said means and the mechanism for reciprocating the
detectors, whereby adjustment of the said mechanism governs the timing of the
vibrations of the feeler.
16. The use, in a loom, of a series of warp stop motion actuating detectors
movable into operative position by breakage or undue slackening of the warp
threads, a feeler to engage and be held by a dropped detector, mechanism to vertic-
ally reciprocate said detectors, means to normally rock the feeler, a rotatable shaft,
and controlling connections mounted adjustably on said shaft between said means
and the mechanism for reciprocating the detectors, whereby adjustment of the

page_text: detector reciprocating mechanism governs the timing of the means for rocking the
feeler.
17. The use, in a loom, of a series of warp stop motion actuating detectors movable
into operative position by breakage or undue slackness of the warp threads, a feeler,
to engage and be stopped by a dropped detector, means to normally rock the feeler,
a harness cam, and connections between it and said means, whereby the timing of
the normal operation of the feeler is controlled by the set of said cam on its shaft.
18. The use, in a loom, of a series of warp stop motion actuating detectors serving
as heddles; means, including harness-cams, to reciprocate said detectors vertically,
a feeler to engage and be stopped by a dropped detector due to breakage or undue
slackening of its warp thread; mechanism to normally rock the feeler, and connec-
tions between said mechanism and the harness cams, whereby the set of the latter
on their shaft controls the timing of the normal operation of the feeler.
19. The use, in a loom, of a series of warp-stop-motion actuating detectors serv-
ing as heddles; means, including adjustable harness-cams, to reciprocate said
detectors vertically, a feeler to engage and be stopped by a dropped
detector due to breakage or undue slackening of its warp-thread, mechanism
between said mechanism
to normally rock the feeler, connections
and
the harness cams, whereby adjustment of the latter on their shaft will
govern the timing of the former, stopping mechanism for the loom, and means
to operate the stopping mechanism when a dropped detector is engaged by the feeler.
20. The use, in a loom, of shed forming mechanism, including detector heddles,
and adjustable cams to effect their vertical reciprocation; stopping mechanism
for the loom, including a feeler to cooperate with a dropped heddle, and connections
between said feeler and said cams, whereby the set of the latter on their shaft
governs the timing of the normal operation of the feeler.
21. The use in a warp stop motion for looms, of a cam shaft, harness cams adjust-
able thereon, a feeler, actuating mechanism therefor, connections between said
mechanism and the cams, whereby adjustment of the latter on their shaft will
govern and adjust the timing of said mechanism, a shipper lever, releasing
mechanism therefor, and means to operate it upon stoppage of the feeler in its
normal movement.
22. The use, in a loom, of a series of vertically movable warp stop motion
actuating detectors, and a feeler movable in the direction of the length of the
warp threads and adapted to engage a dropped detector; means to move said feeler
back and forth in the direction of the length of the warp, said means including an
actuating cam, and a connected cam to control the vertical reciprocation of the
detectors, variation in the set of the latter cam acting to adjust the timing of the
feeler.
23. The use, in a loom, of a shed forming mechanism, including detector heddles
and cam actuated means to reciprocate them, a feeler movable in the direction of
the length of the warp threads to cooperate with a dropped detector, stopping
mechanism for the loom, operative upon engagement of the feeler with a detector,
and connections between the said cam actuated means and the feeler to control the
normal vibration of the latter.
24. The use, in a loom, of a series of flat vertically reciprocating warp stop
motion actuating detectors movable into abnormal operative position upon breakage
or undue slackening of a warp thread, a cooperating feeler having parallel sided
notches to be entered by a detector in abnormal position, and means to normally
move said feeler back and forth in the direction of the length of the warp, stopping
means, and connections therefrom to the feeler.
25. The use, in a loom, of a series of flat vertically reciprocating warp stop
motion actuating detectors, movable into abnormal operative position upon breakage
or undue slackening of a warp thread, a cooperating feeler having parallel sided
notches and flaring entrances to be entered by a dropped detector, and means to
normally move the feeler in the direction of the length of the warp, stopping means,
and connections therefrom to the feeler.

page_text: 26. The use in a loom, of a series of flat vertically reciprocating warp stop
motion actuating detectors, a cooperating feeler having notches with parallel sides
of a depth equal to substantially one half the width of and to be entered by a
detector in abnormal position, and means to normally move the feeler in the
direction of the length of the warp, stopping means, and connections therefrom to
the feeler.
27. The use in a loom, of a series of flat vertically reciprocating warp stop motion
actuating detectors movable into abnormal operative position upon breakage or
undue slackening of a warp thread, a cooperating feeler, slotted to form tines present-
ing parallel sides and pointed outer ends, said slots being entered by a detector in
abnormal position, and means to normally move said feeler back and forth in the
direction of the length of the warp, stopping means, and connections therefrom to
the feeler.
28. The use in a loom, of a comb-like feeler for warp stop motion mechanisms,
presenting a series of tines having parallel sides and pointed outer ends.
Dated the 22nd day of November 1807
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.