US1902318A - Warp-stop motion for looms - Google Patents

Description

March 2l, 1933. w. H. BAKER WARP STOP MOTION FOR LOOMS Filed March 5, 1929 4 Sheets-Sheet J zal Marh21,1933. w, H, BAKER Y 1,902,318

WARP STOP MOTION FOR LOOMS Filed March 5, -19:29 4 sheets-sheet 2 March 2l, 1933. w. H. BAKER I 1,902,318

WARP STOP MOTION FOR LOOMS Filed March 5, 1929 4' Sheets-Shea?l 5 www l March 21,1933. I w. BAKER Leozls WARP STOP MOTION FOR LOOMS Filed March 5, 1929 4 Sheets-Sheet 4 Patented Mar. 2l, 1933 1st-zweit WILLIAM n. BAKER, or ivioNTnEnL, QUEBEC, CANADA Waar-STOP MOTION For. 'Looms ments thatare applicable to warp stop mo-l tions'for looms, to warping machine stop motions, and to other like stop-motion mecha- ,y nisms employed Jfor the discovery of break-` age, exhaustion, or undue slackness ot a yarn or thread, -in connections in which a multiplicity of continuous yarns or threads travel side by sid-e in a sheet or series. Y

The principles and lfeatures of ,theV said improvements are applicable in stop-motion mechanisms of the type characterized by the employment of endwise-reciprocated toothedV feeler-barsthat are arranged to cooperate with drop-wires, which are associated with the individual yarns or threads. As is wellknown, it is customary to dispose in two or more rows or banks the detectors or dropwires which are employed ina warp-stopmotion mechanism, and to employV a plurality of toothed feeler-bars, one for each row or bank. c Y.

The inventionV comprises improved devices subserving certain functions which are-required or are deemed of importance in the case of warp stop-motion mechanisms namely, imparting yieldingly to the endwise movable toothed feeler-bars the required reciprocating longitudinal movement; calling into action the power-unshpping or other power-discontinuing appliances; ascertaining the particular toothedeeler-bar which has been arrested in its reciprocating movement by a fallen drop-wire, and thereby reof the grooved 'guide-bars V'orthe drop-wires and the toothed feller-bars are retained with- 1n the seats yoccupied by such guide-bars in the frame-portions of the warp stop-motion `vealing the particular bank of drop-wires in Vknown `parts and features which are shown Application filed March 5, i929. rSerin No. airlines.'-L

mechanism, while providing Jfor the ready application of thesaid guide-bars ,to the said seats, and removal therefrom.l` p Thev general object of the invention is to provide devices of novel, improved, andpractical character and construction, fory subserv-V ing the various Vfunctions which havev been mentioned.

Illustrative embodiments of the improvements are shown inthe accompanying draw- C" ings, in which latter,-

Fig. l shows, mainlyy inl elevation, certain parts of a loom having associated therewith warp stopotion mechanism comprising the saidimprovements. i p

Fig. 2, sheet 2, showson alarger scale, in end elevation, the warpfstop-motion mechanism-of Fig. 1, omitting-the' knock-oilV def vices.

Fig. 3', sheet 3, is a plan view of the por- .im tions of the said mechanism which are at the end yrepresented in Figs. l 'and-2. y

Fig. 4, sheet4, is a front elevation of the portions which'are shownin Figs. 2 and 3.v

Fig. 5, sheet l, isa viewin vertical sec'- l5 tion on approximately the line 5, 5, of Fig. 4. Fig. 6, sheet ll, is a view in vertical section illustratingchieflythe wings and lone of the wires to-v which references are made later herein. Y Y n Fig. 7, sheet 2, is a view of the transmissionplunger to whichreerence is made hereinafter, land certain parts in connection therewith. ,f l Fig. 8` is a view in vertical section on line 55. -e-s of Fig. a Y

Fig. 9 is a view in vertical section on line Y9---9 of Fig..2. f Y

Having reference, ir'st, to certain well- `90 in theV drawings Y `The mechanism is 'constructed in this instance to yaccommodate six rows or banks of drop-wires i 1, 1, Figs: 3, ,4, 5, Vwhich ynumber frequently 'is `employed in practice. As n is well-known, the vnumber varies in diiier- Vent-cases. At 2, 2, are the stationary guide- Y Vbars upon :which the drop-wires arestrung `by meansfof slots .in the drop-wires, in Ythis instance the upper slots, the said guide-bars .1

41, Fig. l, the said stands serving to support the opposite ends of the guide-bars. At 2l, 21, Figs. 3 and 4, aregrepresented the notches which are formed in the top-edges of the side-portions or cheeks of the stationary grooved guide-bars; atV 22, 22, are the upstaiiding teeth between such notchesyaiid at 31, 31,-are the notches which are formed in the upper edges of the endwise movable feeler-bars 3, 3, the upstanding teeth between such notches being marked 32, 32. At 5, Figs.-

3 and 4, is a warp-support at the front-side of the set of guide-bars and feeler-bars, and.

at 6, Fig. 3, is a warp-support that is locatedat the rear ofthe said set. In Fig. 5 the line of the warp yarns-or threads is indicated by the line w.V In the case of a warp stop-motion mechanism like that shown in` the drawings, the individual drop-wires, in practice, are hung by means of their lower slots, 12, 12, upon the individual warpthreadsinterinediate the said warp-supports 5 and 6, so that so long as the warp-threads remain unbroken and at suiicient tension they hold their drop-wires uplifted so as to keep the upper ends of the upper slots 11 above the toothed edges of the guide-bars andendwise movable feeler-bars, leaving the feelerbars free to move endwise unobstructedly. The-interaction in case a Warp thread breaks or slackens and permits its dropdiwire -to descend is as usual, namely: such descent results in the landing of the upper end of the upper slot of suoli drop-wire within a notch of the corresponding guide-bar, in the path of one of the teeth of the associated feeler-bar, so that such Ytooth engageswith the drop-wire and c is obstructed thereby, whereby the endwise movement of the feelerbars is arrested at an intermediate point in the stroke thereof. f

As heretofore in some instances, end-support` for the guide-bars is afforded 'by means of an upstanding lip 7, see more particularly Figs. 2, 3, and 4, in connection with the stationary stand 4. As illustrated the said lip has, as usual in practice', vnotches consti- Ytilting seats in which the end-portions of the grooved guide-bars are received as shown in VFig. 4, whereby-the guide-bars are kept in Vuprightposition properly spaced Vapart from one another, the guide-bars themselves-being formedwith notches, as sliowninFig. 4, to it over the bottoms ofthe notches in the lip, in order to keep the grooved guidebars from displacement endwise.

At 8 is a swinging retainer such as heretofore has been employed in the like connection, hung pivotally by means of a pin 9 to the stationary stand 4, which last in this iiistance has frontpaiid rear upstanding portions, lor, lugs, 42, 42, and an intermediate one, 43, with the latter separated from said front and rear ones byspaces 44, 44, which are-occupied by downwardly-extending lugs 82, 82, of the yretainer 8, while the pin 9 passes through the interlapping portions or lugs. This pivotal mounting of the retainer, enables the latter, when desired, to be swung inward to carry its ci'oss-bar into retaining `position over the ends of the grooved guidebars as in 4, to prevent their notched ends from rising out lof engageinentwith lip 7 or to be turned outward so as to carry said cross-barclear of the said Yends and out of the way, in order to permit removal and resaid cross-bar has notches 81, 81, Fig. 3, at its top side'to receive the ends of the guidebars, for the purpose of supporting the guidebars temporarily in positions above their normal working positions as sometimes is required..

Referriiigat this point to my improved means for controlling theposition of theretainer, whereby to hold it in its inturned closed position,.as in the drawings, overlying the ends of the grooved guide-bars, or, in an outturned position, clear of the guide-bars, as the kcase may be The said means coniprises a bolt 45 occupying a recess in the intermediate upstanding portion or lug 43, and backed up by an expanding spring 48 within the said recess, thesaid spring acting with a tendency to cause the said boltto project laterally from the mouth vof the recess, Iand beyond the corresponding side of the portion or lug 43, into contacty with theproximate side of the adjacent downwardly-extending lug v82 'of the retainer. In the said proximate face of the said downwardly-extending lug. a depression'47, Figs. 8 Aand 9, is made.

Such depression is located in a position enabliiig the spring-projected bolt 45 to enter thesame when the retainer '8 is swung inward into its closed position as in the drawings. Through occupancy of the depression 47 bv the bolt the retainer. is kept in its closed`4 position. but upon applying to the retainery a moderate amount of force tending to'turii it outward the bolt will slip out'of said recess. permitting the retainer to be swung outward. In the present instance, and preferably, the bolt 45 is in the form of a ball, which has the advantage of working easily in connection with the depression 47, and the surface of the lug 82.

rEhe illustrated train of' kdevices employed for imparting the required endwise recipro- ,piacenient of the grooved guide-bars.A The i 3, 3, includes, vas iin the casef of-fearlier Warp 4 `stopfmotion-y mechanisms off-the 's ame class inc' vented and. patented byfme, asso-called 'actuf1 ator; orvibrator jhavingfv a reciprocating movement-pin the direction 4offlthe length ot fthe toothedbarsgivento it. 'The vsaid .actus ator or vibrator in this instance -iismounted Y eating-.movements nto the toothed .feelerV-bars by means: of arms 101 and 102,-;Withwhich1it Iis provided- 'atits oppositeends,upon a shaft i -103fthat issupportedv 'atl its front Vand rear .:tliat the actuator or vibrator is capable of a 'l Swingin greciprocating'.movement'.around the i axis of thefsaidlshafttransverselyofthe'loom;

1 that is to say, 4in'the'direction.of the lengths 'ofthe groovedguide-bars and the feeler-bars. --fThe said movementis communicated-to 'the -actuator or vibrator-.through thevagencyiof an arm.13,fFigs. 27 and'4, that is mountedi by means ofiits hub 131upon an end-portion of shaftflOS and connectedy by meansA of a' rod 14: with suitable Lactuating mechanism, not

Vshowng AIn.:this instan-ce, as in the caseof A intU: S.: LettersfPat'ent .to Sme granted klan.

theV Warp stop-motion:mechanism presented 29, 1929, No. 1,700,345, the actuating connec- -V the toothed feder-bars, with' capacity for 'dis- V,esta'blishment at 'will of the connection soas to permit the actuator .or-vibrator to be actu-A vated inanuallyuas is useful in ascertainingin 1 ymanner .Weilelncivnl to those skilled in theart the, particular- 'drop-Wire which' has changed its position by. reason oyarn-breakage; etc.

4The' clutcli-deviceLthat is employed inpracvticemay vary 1n character, construction,- and "place of application. The 'one shown-issimizlar to that of the said LettersPate-nt compris ing apin 15, `slidable'verticallyfin guides at V1011, 104, in connectionvvith the-'arm`101at one endoi the vibra torandf adapted toenter the actuator or vibrator, so that when the arm is vibrate'd by means of the' motion-trans mitting connections'vibrating 'movement "is transmitted automatically f to the actuator or vibrator. Ii" the pin be'drawnl out of' theho-le,

the operative connection Will be broken,'tl1er'e by rendering the actuator or'vibrator Vfree `i'romthe motion`transmitting-connections,` so

`the actuator or vibrator manually 'through using the pin as a handle. By means'ofsuc'h fmanual-actuati-on of the actuator or vibra'- tor -itis possible, `after Vthe Warp stop-motion vvmanual actuation ofthe .individualffeeler-f wbars for finding purposes. Ireferably7 the 90 mechanism has operated to bring about stopfpage! of the loom .automaticallygfto w'vorkby .liandthe tootlied feelerf-b'arsfto aid in determining .which row or bank contains 1' a fdroplivire` vvhichhas dropped in' consequenceof-f breakage off yarn orthread, and. in :finding such drop-Wire. andthe broken or slackened Vyarn-'or thread. i

The mechanism includesginv combination )With-fthe reciprocatory Vfeeler-bars 3, 3, a'l *series of fingers 16, 16,'fWhich are mountedin ends in holesfin cheeksll), 419,1of stand- 4, so

thereof in the direction of vthe length -of 'the eeler-bars and includes also vWings '18,' 18, -vvhich are mounted inmannerap'rovidingfor mannerr. rovidin@ for. swindin Amovement swinging movement in such direction.-

iso

Incarryin'g `the invention into effectanol i as one portion thereof, I adaptiingers' 16, 16,

toyconstitute visible indicators vserving "as guides to aid-in` ascertaining the row orfbankiyotclrop-Wires in which a dropped drop-Wire :obstructs the 4reciprocatorySmovements-'ofra feeler-bar; and alsoto provide means "for said `fingers areemployed as'in the caseiof spring-members of' the prior Vart, for transmitting yie'ldingly `power fromv the vibrating Aactuator kor vibrator to fthe `recipr'ocatory feelerfbars' to cause' reciprocating movements of the latter;,although,in somevcases, they vmay notl have this function, which then may be subserve'd byv theiWings. The Wings118,f18,

are so combined, etc., Ias to serve'to bringthe knocking-ofi devicesof thefloom into action, 'mordervto discontinue the ,vvorkimg:of the iloom, inacasefal moving feeler-bar is arrested :bya dropped drop-Wire. The V'Wings in the case fthe-illustrated mechanism assist in 1mpart-1ng1the required reciprocatory 'feeling "105' movementsito the feeler-bars. As justindicated, 1n some cases, thesaid movementsmay -beimpartedby means of Wingsvvithout assistance from fingers such as 16, 16. In such cases the `fingers will Vor may he utilized for Y manually moving the feelerba'rs-individu'ah i l-'ando ,'d' tY lth' as shown the hole inhub 131 ofarm 13. .Y y I' as' m ma Ors? ,or eymay be Chs Whileitherpin occupiesftheisai'd hole,i oper- 1 ative connection exists' between-'the arm 'and 167 Y16, are Carried by the actutor or vibraltor, asusual'in the case ofthe spring-,elements Y pensed with..

In the illustrative embodiment the 'lingers heretofore {theyare flexible; and they are en-y gaged with the studs 433, 33, of the lfeelerbars' i Thereby, 21S the' actuator or vibrator swings about the axisof shaft k103 ,the'nfgfeIj-S V Jperate to transmit force yieldingly from 'the actuator or yvibrator to` the Vfeeler-loars, .to move the latter'bacl andV `forth endvvise,

and so that `the .feele'rbars Lnormally arefy Vmoved in unison, butin case Vone othem en-V Vv y .factuated kby the actuator or vibrator 10, for

. the actuation of the feeler-bars, are combined` with the actuator or vibrator through being attached at their lower ends to the body of the actuator or vibrator. The mode of atjtachment, and also the constructive details of the actuator or vibrator, may be varied more or less in practice, as found desirable. In the .drawings the said body of the actuator or vibrator is constituted by a cross-bar intermediate the arms 101 and 102, which are sleeved upon the shaft 103. The said crossbar is located below shaft103 in order to af'- ford opportunity for` employment of fingers ,16, 16, of considerable length, so as to attain a more advantageous flexibility accompany.

- ing adequate strength. For the attachment 1 .of the-fingers to the actuator or vibrator, tne

cross-bar of the latter is provided in this instance with holes which are occupiedA by the ,attaching ends ofthe fingers, and within :Whic-hthe fingers are secured by Vmeansof clamping screws 161, 161, Figs. 4 and-5.V Refmoval and replacement of the lingers Yare accomplished' readily. The connection ofV fingers 16, 16, with the reciprocatory feeler-bars is accomplished inthe present instancethrough making the studs 33,. 33, withdr-V ametrical holes 331 (shown bestin Fig. 6) and causing each finger 16 tooc-cupy the hole 331 of the corresponding feeler-bar. Holes ,10.6, Fig. 6, in shaft 103 permit thengers to extend diametrically through the said shaft, the said holes being enough larger than the fingers to permit free'lateral play of the :lingers relative to the shaft as kthefingers are caused to vibrate in actuating the feeler-bars,

and also when they become flexed in conseyqu'ence of arrest of endwise `movement of the feeler-bars bydropped drop-wires.. lVith respect to visual indication, it will abe observed that in the mechanism that is shown in the drawings the upper extremities of the fingers 16, 16, extendsuhcient distances above/the guide-bars and feeler-bars Vto cause them to standup in'full view,.so

that the positions of the respective lingers will be 'exposed clearly, and so that anydev parture of. one finger from series-alinement with the others, due to obstruction Aof the movement of its associated feeler-bar by. a

dropped drop-wire, .will be plainly evident.

,This marks easy the work 'of finding in. welllnownmanner, through manual actuation of the actuator or vibratorwhile the mechanism vis at rest following stoppage, the row or baril; of drop-wires in which a dropped drop-wire 'obstructs a feder-bar.

Alsc, the upstanding upper extremitiesof .the fingers are adapted to be grasped as convenient finger-holds, and

'to be used in manipulating a particular finger "and'its feeler-bar`lfor finding or other purposes capable of being subserved through manually applying force tending to lmove the individual Vfeeler-bar endwise. v Y

' inclined side-walls. Yated by spring-pressure to cause such inclined y is conn'ed.

Referring, now, to the wings 18, 18:'-

There isa pair of the said wings, (see more particularly Figs. 3, 5, and 6,) and-the two wings composing such paircoact with the studs 33, 33, projecting from the feeler-bars.

For such coaction,projections fromthe tops of the respective wings are arranged to engage with the said studs, those .of one wing engaging the. studs at the outer side of the latter and those of the otherwing engaging .the studs at the other side thereof, so that the studs intervene between the engaging portions ofthe two wings. The wings might be arranged vand combined to cooperate with other parts in connection with the feller-bars, with thel saine general results. While the partscontinue to work normally, the Wings and the studs :move in unison in the directions in which the feeler-bars are reciprocated. In this instance, the wings are .ar-V

by means of a controller 19 having a V-shaped notch, Figs. 3 and 7, which is occupied'by ears 182, 182, of the wings, as shown best by such views. The inclined side-walls of this notch engage with the eXteriors of the said ears, which usually are correspondingly inclined, as in the drawings, to it the said yThe controller is actuside-walls to act upon kthe eXteriors of the ears with a tendency to press 'the wings toward each other and lthereby holdthe ears in contact with each other and the wings in contact with or close to the opposite vsides of the studs 33, 33.

In order to cause the wings to swing in synchronism with the actuatorV or vibrator the controller 19 is mounted to swing in unison `withvthe latter. .In this instance it is mounted" upon the'arm-.102 thereof. The

l form, etc., of the Acontroller maybevaried inv practicebut advantageously it is constituted inthe -mechanism shown in the drawings of mounted upon the said arm 102 by means of guides which are provided in connection with the arm and in which the said rod-like stem is confined. 011e of the guides is constituted by an ear 20on the arm`102 having therein IBO va plunger having'a rod-like stem, and is v a holethat is occupied by the lower portion of the stem; another is constituted by a pair .of grooved guide- rolls 201, 201, between which the portion of stem adjacent the notch The spring-tension by which the'notched yportiony of the plunger-isheld in engagement were with the ears of the wings may be variously applied according to the specific construction that is adopted in the case of the Vmechanical.

details.` In this instance'it is transmitted to the plunger Ithrough the agency of a or the wings with a tendency to press the` wings toward each other. The point or contact 'between the arm 242 of the rocker `and, Y the lower end of the plungerl 20 is located` in line Ywith the longitudinal axis of the shaft 10,3, in order 'that the working relations between thejsaid arm and the said lower end may' not be disturbed by the swinging of ythe. actuator or vibrator, Vnotwithstanding the fact thatQth-e rocker is mounted upon a stationary bracket.' .Hence the relations between Vthe plunger-end and larm 242 of the rocker, and the eliect of the spring in tending to' move the plunger endwise, are not ail'ected byswinging movement of the actuator or vibrator. o Y i y F rom the foregoing description it will `be understood that when lthe actuator or vibrator isfcaused to swing around the axis of shaft 103, the wires` 16, 16,l and the wings 18, 18, will haveV swinging movement transmittedf to' them'from the actuatoror vibrator, causing them to swingl inunison ywith the actuator or vibrator.- Preferably, the power of'the'spring-tension of wires 16, 16, will be proportioned to enable such wires to take the mainl burdenin actuating the feeler-bars, in which case the tension and eilect of the spring 261 will be madej ust suilicient to cause the wings to retainclose'relationship to the studs'SS, 88, of the feeler-bars as the eelerbars reciprocate. u Or, the conditions may be reversed so that the wings shall take the mainburden in communicating the reciprof catingmovementsto the feeler-bars, and the wires shall'serve chiefly as indicators v In case a feeler-bar should :be arrested in its movement in either direction by a dropped drop-wire, such arrest .taking place atan intermediate point in suchmovement, it will prevent the associated linger 16 from move-` ment further in such direction, and also arf` rest the wing which is following behind the studs-33,33; In consequence, the ear182 of theY Varrested wing will become stationary.

Further movement of the actuator or vibra- 4 tor; will cause the wire L16 to lieX, and in addi-v tion will cause the inclines of controller 1,9 which is pressing against the ear of the wing that is thus held stationary to` slip 4upon such ear, impelling` the controllerY 19 .lengthwise downward'. Thereby byy reason of suchmove! ment of the controller lengthwise'the 'kcontrollergwill be caused to act against arm 242 of rocker 24 to turn the'latter.V Y o f'l`he-turning-movement of the rocker, just referred to,is made instrumental in causing the driving power of the loom to be knocked f oli". For knocking-off purposes, the arm 241 of the rocker is'combined operatively with knocking-0Ev devices 4whereby such 'knock-` ing-ofi is accomplished. As will be apparent, the controller 19 constitutes a `slip-coupling orlgive-away member in causing thewings to move in unison with the'actuatoror vibrator,

and in permitting auslip to, take place as a result of further movementof the actuatororvibrator while `a wing is held ufrom` accompanying the actuator or vibrator. also aszin the case of other vgive-away de-y vices of warp stop motions tobring about the knocking-od action of the knocking-'odei-A vices.

Itacts,

lnasmuchas the devices"'comprisi1ig theV i drop-wires, i'eelerfbars,

85e., including the rocker2'4, are located'near the rear of theloom in which, they are emactuator orjvibrator," i

ployed, whereas the knocking-oft devices are located at 'the front in thelooni, Iemploy by preferencea flexible transmitting means for connecting the `tiret-mentioned devices with the knocking-off devices, thereby simplifying the connections andr giving more la'titudeiny respect of the form, i ment of the knocking-orf devices. ileizible transmitting means'niay .vary in specilic character. Thus the well-known Bowden wire` may be employech it comprising a transmission wire combined with a tubular sheath within which it lits with freedom of movement lengthwise. l/Vhen pushed lengthwisewithin the tube `the transmission wire will be guided by the tubular sheath so as to transmit movement toa part or device,`

locatedpat the far Lend of the tubular sheath. Asis well known, the transmission wirevin `sofmev instances is ntilized through.V being pulled lengthwise within the ,"tubularsheath. Preferably, I employ an improvedV construction of flexible transmittingmeans comprising, instead of the plain wire heretofore used a wire formed into a close spiralresemblinga close spiral spring.- transmission spiral is shown at 27. The containing `tubular sheath is indicated at, 28, Owing to the'niultiplicity of gears and other moving parts Vadjacent the vicinity yoffthe iieXible transmitting means, I preferv to em!y ploy a rigid tubular sheath as illustrated, formed of'metal adapted to be. easilybent' into the desired relation vwiththe other "loom InFigs. 1 and 5, such a location, and arrangesl v The said parts.- This arrangement prevents the' flex-l ible transmitting means from being brought into range .of and being broken or damaged by such moving parts, as has frequently happened hitherto, as a resultv of vibration or of the Weavers eorts to clean around these parts. The continuous spiral transmission member 27 works better than a plain wire in movement within bent portions of the tua hole in the latter.

" constituted, arranged, &c., in practice.

biilar sheath. One end of the transmission spiral is joined by means of a connector 29 to the arm 241 of the rocker 24, so that when the rocker is rocked through the interaction of a temporarily stationary wing and the controller, as just explained, the swinging movement of the arm 241 moves the transmission spiral lengthwise within the tube to bring the knocking-off devices into play. It .A is feasible to arrange so that this rocking movement of the rocker may result in pushing the fiexible transmitting means lengthwise within the tubular sheath, but in this instance the parts are arrangedand combinedl so that the rocking of the rocker acts to pull the flexible transmitting means. VThe connector 29 is made of wire, with one portion thereof bent to form a hooked end which is engaged wit-harm 241 by being placed in The connector is engaged with the transmission spiral through having its stem screw-threaded and screwed into the central opening extending lengthwise through theY spiral.

with the transmission spiral. The screwthreaded stem may be screwed readily into the spiral but cannot be pulled out or unscrewed. This safeguards against accidental disengagement. A connector 30, in similar screw-threaded engagement with the other end ofA the transmission spiral, unites the latter end to the knocking-off devices.

The knocking-off:l devices may be variousy n Fig. 1 of the drawings they comprise a dagger 31 having the forward end of the transmission spiral joined to an upstanding arm thereof, a dagger-support, which lisinounted "pivotally at 321 upon the loom-frame Vwith 35 for knocking-od purposes, and a bunter' 36 that is carried by the lay 37.

` These knocking-off devices are of one of the well-known types. The mode of operation thereof is as usual, viz: Normally, the

This provides a positive inseparable union of the connector' dagger 31 'occupies a position clear of thev path in whicih the bunter 3(3 moves as the lay makes its strokes rearward. When, however thetransmission device is actuated to swing the engaging portion of the dagger into the said path, the lay-carried bunter 36 takes hold thereof in the next stroke of the lay rearward, and drives the dagger and dagger-support ahead of it so as to actuate the knocking-off lever 34 to knock off the shipper-handle 35.

That is claimed'as the invention is:

1. The combination with longitudinally re'ciprocable feeler-bars having projections with holes therethrough, of a vibrator, and flexible fingers extendingthrough said'lioles and transmitting movement yieldingly fromv the vibrator to the individual feeler-bars.

2. The combination with longitudinally reciprocable feeler-bars having projections with holes therethrough, of a vibrator, and'y fingers constituted of lengths of spring wire extending vthrough said holes and through which the vibrator yieldingly transmits movement to the individual feeler-bars. 'f

3. The combination with longitudinally reciprocable feelerv-bars, anda vibrator, of

flexible fingers through which the vibrator.f yieldingly transmits movement to the feelerbars in the direction of the ylength thereof, with extensions of said fingers projecting into full view some distance above their connection with the feeler-bars, constituting visible indicators of the positions of the respective feeler-bars and finger-holds by whichthe fingers may be manipulated to Work the feeler-bars for finding purposes.

4. The combination with longitudinallyl reciprocable feeler-bars .having projections with holes therethrough, of a vibrator, and

fingers constituted of lengths of spring wire i extending through said holes and by means of which the vibrator yieldingly transmits movement to the individual feeler-bars, the

upper extremities of the said wires extending some distance above the said projectionsY and constituting visible indicators of the positions of the feeler-bars.v

5. The combination with longitudinally,

reciprocable feeler-bars, and avibrator, of flexible fingers constituted o'f lengths of spring wire fixedly attached to the vibrator, in operative engagement withthe feeler-bars to transmit yieldingly to the feeler-bars force tending tol reciprocate them individually, with extensions of the respective lwires rising into full view above the feeler-barsvto constitute visible indicators of the positions of the respective feeler-bars. Y

6. The combination with reciprocable feeler-bars, means for yieldingly recipro; eating the same, and'wings havingmovements synchronizing with those of the feelerbars, and a device operatively combined with reo iso

the Wings and through arrest of a wing due to arrest of a feeler-bar influenced to transmit an indicating action.

7. The combination with a series of reciprocable feeler-bars, and a vibrator from which reciprocating movements are imparted yieldingly to the individual feeler-bars of the said series, of wings having movements synchronizing with those of the seriesv of 0 feeler-bars, and a controller which through arrest of a wing due to arrest of a feeler-bar is influenced to transmit an indicating action.

8. The combination with reciprocable 5 feeler-bars, and a vibrator, of fingers actuated by said vibrator and operating to yieldngly actuate said feeler-bars, wings having movements synchronizing with those of the vibrator, fingers, and feeler-bars, and a con- 0 troller operatively combined with the Wings and through arrest of a wing due to arrest of a feeler-bar influencedto' transmit anindieating action. Y

9. The combination with reciprocable 5 feeler-bars, and a vibrator` from which such feeler-bars derive yielding actuation, of wings coordinated withv said feeler-bars and normally moving in company with the series thereof, and a controller vibratingin unison to arrest of a feeler-bar influenced to transmit an indicating action. l0. The combination feeler-bars, and a vibrator from which such feeler-bars derive yielding actuation, of a pair of wings coordinated with said feelerbars and normally moving in company with the series thereof, and ay controller vibrating 0 in unison with the vibrator, operatively combined with the wings in manner whereby when either wing is arrested through arrest of a feeler-bar the controller is influenced to transmit an indicating action. 5 1l. The combination with reciprocable feeler-bars, and a vibrator, o-f a pair of vibratory wings coordinated with said feelerbars, and a controller carried by the vibrator, operatively combined with the wings in manner whereby when either wing is arrested through arrest of a feeler-bar the controller is influenced to transmit indicating action.

l2. The combination with reciprocable feeler-bars, and a vibrator, of a pair of Vibratory wings coordinated with said feelerbars, and a controller moving in company with the vibrator, having a cam-engagement with the wings whereby when either wing is arrested through arrest of a feeler-bar the resulting cam-action influences the controller to transmit indicating action.

13. The combination with reciprocable fee-ler-bars, and a vibrator, ofa pair of vibratory wings coordinated with said feeleri bars, and a controller moving in company with reciprocable with the vibrator, operatively combined with the wings, and through arrest of a wing due with the vibrator, having a V-notch occupied by projections from the wings, whereby when either wing is arrested through arrest of a feeler-bar the resulting cam-action influences the controller to transmit indicating action.

14E. The combinationV with reciprocable feeler-bars, and a vibrator, of a pair of wings coordinated with said feeler-bars, a controller engaged with said wings and vibrating in unison with the vibrator, a spring-actuated rocker cooperating with said controller, and stop-motion connections through which said rocker brings about power-disconnection when arrest of a wing dueto arrest of a feeler-bar actuates the controller to rock the rocker.

l5. The comb-ination with a plurality of feeler-bar-supporting guide-bars, and a support for the ends of said guide-bars, of a swinging retainer mounted with capacity to be swung into guidebar-retaining position over the guide-bars and to be swung into position to clear the guide-bars, said retainer having a bolt-receiving depression in a sidesurface thereof, of a. spring-actuated bolt held pressed by its spring against the said side-surfaceJ of the retainer and Aprojected by the spring into the said depression when the latter arrives in line with the bolt.

16. In stop-motion mechanism, the combination with detectors, and power-disconnecting means, of transmission means intermediate said detectors and said means, comprising a rigid tubular sheath, a flexible transmitter consisting of a close coil of wire extending through said sheath and freely movable longitudinally therein, and a connector combined with the end of the flexible transmitter by means of a screw-threaded stem screwed into the end of the flexible transmitter and held by engagement of the stem threads between the coils of the wire forming the transmitter.

WILLIAM H. BAKER.

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