US863131A - Warp stop-motion for looms. - Google Patents

Description

ATE NTED AUG. 13, 190?.

W. F. ANDREWS. WARP STOPMOTION FOR LOOMS.

APPLIOATION FILED JULY 30 1906.

2 SHEETS-SHEET l.

PATENTED AUG. 13. 1907.

No; 863,131. W. F. 'ANDREWS.

WARP STOP MOTION FOR Looms.-

APPLIOATION FILED JULY 30, 1906.

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flV/////// //Wlll I I!!! A UNITED STATES PATENT OFFICE. WILLIAM F. ANDREWS, OF GREENWOOD, SOUTH CAROLINA, ASSIGNOR TO DRAPER COMPANY,

OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

STOP-FICTION FOR LOOMS.

N o. 863,131. i Specification of Letters Patent. Patented Aug. 13, 1907.

' Application filed July 30,1906. Serial No. 328,293.

To all whom it may concern: r ient form of warp-stop-motion for purposes of illustra- Beit known that I, WILLIAM F. ANDREWS, a citizen tionand explanation, and have applied thereto one of the United States, residing in Greenwood, county of practical embodimentof my invention without in any Greenwood, and State of South Carolina, have invented way restricting my invention thereto. '5 an Improvement in Warp Stop-Motions for Looms, of The various novel features of my invention will be I which the following description, in connection with the fully described in the subjoined specification and paraccompanying drawing, is a specification, like letters ticularly pointed out in the following claims.

on the drawing representing like parts. Figure l is a partial transverse sectional view of a In operating a loom provided with a warp stop-mosufficient portion of a loom provided with a warp-stoption, designed to effect stoppage of the loom automatmotion, with one practical embodiment of my present 'ically .upon the occurrence of a warp fault, (such as invention applied thereto, the parts being shown with failure or undue slackness of a warp-thread) a great the loom in operation; Fig. 2. is a detail of a portion of deal of trouble and delay is occasioned in actual practhe stop-motion shown in Fig. 1, but after the same tice by loom stoppages due to' slacki threads, which are. has operated to cause loom stoppage, and the loom has frequently very difficult to find. Often the slackness been started, the loom-stopping function of the stopis only temporary, t. e,, of such extent that if the loom motion being held in abeyance; Fig. 3 is a top plan couldb'e run a short time the slackness would be-gradview, enlarged, of one form of means for rendering theually taken up, or the continued operation of the loom warp-stop-rnotion ineffective to cause loom stoppage. would give the attendant ample time to find the faulty The lay l, cam shaft 2, shipper 3, and'the notched 1U ;hread and correct the fault if necessary. Heretofore, holding plate 4 for the shipper, may be and are of well I however, when loom stoppage has been effected by or known construction, the shipper when released acting through the warp stop-motion' it has not been possible to throw off the power from the loom through any suit- ,to resume the operation of the loom until the faulty able instrumentality, such for instance as shifting a thread has been found and the fault corrected,- for othdriving belt from a fast to a loose pulley, and so familiar d erwise the stop-motion would act at once to stop the to those skilled in the art as to require neither descriploom each time it Wasstarted. Such stoppages when tion nor illustration. due to slack threads unnecessarily waste the time, of -I have for purposes of illustration only shown herein, the weaver'and decrease the production of the loom, ,in Fig. 1, a warp-stop-rnotion wherein the stop-motion because, as has been stated, thefault would generally controlling detectors also serve as heddles, of the socorrect itself if only the 100111 could continue in o eracalled "steel-harness t e, each of the harness-frames P YP tion. forming partof the shed-forming mechanism including My present irivention has'for its object the production an upper cross-bar a which serves as a support for and of means whereby, by and at the will of the operator, a from which the detector-heddles d are suspended. warp-stop-motion maybe rendered ineffective to cause Such detector-heddles are made in practice as loom stoppage. If, therefore-the loom'is stopped by longthin and flat metal strips longitudinally slotted or through the warp-stop motion the weaver can, by at d near their upper ends to receive the supports 1 my invcntion', immediately thereafter start the loom the slots being long enough 10; permit relative longituand continu weaving and at leisure discover and cor dinal movement of a heddle when under certain conrect the fault if it is not cured by the operation of the ditions released by failure r undue slackness of its 40 10am itself. warp-thread. The threads pass through warp-eyes d iffy invention is also of great advantage when putting in the heddles, as shown. Two opposit ly moving feelr. now warp into a loom," because the warp-stop-Inotion ers f, carried by rock-shaftsf Figs. 1 and 2, are norcan.- be rendered ineffective to stop the loom while the mally vibrated toward and. from each other below the .enision of the warp is being properly adjusted for 'lower ends of the detecto'-heddles, which are divided 4- '5 weaving. I 7 into two groups by an upright plate a Segmental in- Sofar as I am aware it is broadly new to render a termeshing gears P on the rock-shafts are herein shown warp stop 'motion ineffective to stop the loom while; causing them to rock oppositely in proper timing-a othelrf'f unctions of such stop-motion remain active, and 1 spring 8X sifecting the inward or feeling stroke f the accordingly my invention is not restricted to any pain I feelers." The outward stroke thereof is olliictod positicula'r type of warp-stop-motion, nor to the particular tively by or through suitable n1:.-rlr:r;:i.-;:u indicated at means herein described and illustrated for accomplish- M, Figs. '1 and 2, operated by rmulion of the caming such result. I have therefore chosen one convenshaft 2.

So far as concerns the mechanism thus far described l stop-motion and the shipper knock-off member. llere it is well known in the art and not of my invention. and needs no further description other than to state that when a detector-huddle is released by failure or undue slackness of its warp-thread the lower end of such heddle will engage and arrest its feelcr on the feeling stroke when the harness-frame in which such heddle is located is down. Thcreupon the mechanism indicated at M effects longitudinal inovementof a 5 from the? position shown inFig. l, to that shown in Fig. 2. such'movement operating to effect the actuation of an instrumentality to stop the loom.

The lower end of the link 5 is pivots-.lly connected at 6, see also Fig. 3, to an arm 7 the hub S whereof loosely vembraces a rock-shaft 9 mounted in bearings 10 on a cross-girth 1i at the front of the loom nearthe base thereof. The hub S herein.constitutes a coupling and is shown in Fig. 3 as having a notch 12 in one face to receive a lug 13 on a collar 14 fast on the rock-shaftil. a spring l5 normally tending to retain the hub and collar in engagement locked together, forming a coupling or clutch to connect the shaft and arm 7 to rock together.. This is, however, only a convenient and practical form of coupling or connection between the arm and shirt, and my invention is not restricted thereto, as any other convenient and suitable lo m of coupling may be used. It is generally customary to locate the "link 5 at or near the center of the loom, and accordingly the shaft of the loom, a knock-off arm or member 16 9 is extended toward the shipper side being made V fast to the rock-shaft and having-a cam-slotted upper end 17 through which the lower end of the. shipper 3 passes, as shown in Figs. 1 and 2.

From the foregoingdescription it will be seen that a connection is provided between the shipper-releasing device or knock-off member and the warp-stop-motion, such connection including a coupling device, and under or dinary circumstances the longitudinal n1ovemen t of the link 5 from the position shown in Fig. 1 to that shown in Fig. 2 will swing the arm 7 and rockrthe shaft 9, moving the knock-off member 16 2oeffect release of the shipper and consequent stoppage of the loom. As will be readily understood the longitudinal movement of the link is effected when the warp-thread'of a dctector-heddle fails or becomesunduly slack. Now if the loom be started. the coupling referred to being operative and the warp fault continuagain, for the detector ing, the stop-motion will immediately stop the loom which had cooperated with the fecler will again cooperate therewith.

It has been statedthat many operations of a warpstop motion are due to slack threads, which are usually very difficult for the. weaverlto promptly locate, and it vhas also been pointed out that frequently the 'slackness would be Woven up could 'the loom be started and its operation continued, or the weaver would be afforded ample time to locate the slack thread without loss of productionby the loom. This highly desirable object I attain by rendering the coupling inoperative for any desired length of time, the loom-stopping function of thc varpstop-motion'being held in abcyance so long as the coupling is inoperative. In other words Irender the stopping mechanism of the stop-motion ineffective at the will of the weaver by disconnecting the link in 1 accomplish such object by pivoting a. handle 18 on the erossgirth at'lil, and connect ing it with the hub S by a pin 20 loosely entering aslot 21 in the handle.

when the handle is swung to the left, Fig. 3, the coupling is rendered inoperative, the notched coupling hub 8 being drawn away from the lug l3 and against the spring 15, disconnecting the arm 7 and the rockshaft 9. Any suitable catch may be used to hold the handle when the coupling is inoperative. and herein a locking pin 22 passed loosely through the handle is adapted to drop-into a hole or socket 23 in the crossgirth 11, (see dotted lines Fig. 2.) Supposing the loom to have been stopped by the warp-stop-motion, by reason of a. warp fault. if i'he'weaver does not at once discover whether the fault is a broken warp-thread or a slack thread he moves the handle 18 to render the coupling inoperative, the locking pin 22 dropping-into its socket 223. The shipper is thcnmoved to running position and thelooln is started. and while the released detector will cooperate again with its feelcr as shown at 1P", Fig. 2, the stop-motion is rendered ineffective to cause loom stoppage. Thus the weaving continues. and if the original cause of stoppage was a slack thread its slackness will be woven up orthe weaver is given sutiicient-tinw to find it and then correct the fault if necessary. A failed warp-thread is much more readily located than a'slack thread; but even ifthe initial stoppage was due to a failed thread the continued operation of the loom will not be objec tionable, as the fault will be located before any dainage is done to the cloth. As soon IStli8 weaver div covers the thread at fault lie-either stops the loom to correct it, or if that is not necessary unlocks the coupling-controlling handle and the spring 15 rcstorcs the coupling to operative condition. The warp-stop-motion is thereby given control of the stopping instrumentality, and normal conditions are restored. The coupling is convenient to the weaver, and can be readily manipulated by him without leaving the front of the loom. v i 4 Having fully described my invention, What I claim as new and desire to secure by Letters Patent is 1. In a loom, a shipper, mechanism adapted to effect release thereof upon failure or undue slackness of a warp thread. and means operative at will torender said mechanism ineffective with relation only to the shipper.

2!. In a loom, a shipper, a knock-off member to release it, mechanism to normally actuate said member upon lime or undue slackness of a warp-thread and thereby release the shipper, and means actuated by the operator to prevent actuation of the knock-off member by or through said mechanism while the loom continues to run.

In a loom, mechanism adapted to effect the actuation of n stopping instrnmentalitv upon failure or undne sla ckness of a warp-thread, and means operative at will to hold such actuation of the stopping instrumentality in abevahcc while the loom continues to run,

4. A loom having, in combination, mechanism to effect its stoppage upon the occurrence of a warp fault, and means operative at will to prevent the only the unshipping of the loom.

5. A loom having. in combination. a shipper. mechanism adapted to effect release thereof upon the occurrence of :1 \vurp fault, and means governed wholly by the operator to render said mechanism inactive with respect to the shipperonly for any desired interval of time.

6. In a loom, mechanism to normally effect :1 change in the operation thereof upon the occurrence of :i warp fault. and manually :totnatod means to at, will rondor said llltt'lItlIllSlll inotl'ootiro only to chang'o tho oporation of tho loonL T; In a loom. a shlppor, \rarp slop'motion (-ontrolli delortors. a Ieelor adapted Jo onga io a dotootor rolo:

ott by failure or undue slaoknoss ot' a \rarp-throzulv morhanism normally rondorod oporativo lay uoh oooporation of tho t't olcr and a detector to Causo roloasool' tho shippor. and means :u-tuatod hy the oporator to rondor said morhaniam inetl rtiro to roloase tho shippor. 4

R. In a loom. a shippor, moohanisin adaptod to normally .offoet' roloase thoroof, upon t'ailnro or unduo slavkuoss of a warp stopanotion mechanism adapted to oporat'o tho ai't'uator upon faihiro or unduo slaoknoss of a \varp-tlu'oad. and means operativev at will to disconnect tho knoolvoh' member and its actuator. wherohy the loom ran ho run notwithstanding a continuance of tho warp fault.

10. The combination, in a loom, of a shipper. mothanism; including-a ooupling to effort: roloasu ot' the shipper upon lure mundue slackncr of a \varp-tln-oad. and means to at will release the coupling and thorohy rondor they said incohanism'inofiective with rcspfict to tho shipper while the coupling is roleused.

11. The combination, in a loom. of nieohanisiu to operato in a predetcrminod maunoiupon tailuro or unduo slacknoss of a warp-thread, and adaptad to thoroupou eti'eot th actuation of a stopping instrumontality for th loom. and moans operated at will to prevent. actuation of the stopping instrmnontality whilo pormiltin: said llltt'ilfll'liSIIt ito oporate in such prodotorminotl mannor.

12. In a loom. med-forming mechanism invluding a serif of stop-motion controlling (lotoirtors serving; also hoddles. moans adapted to otfct't the aotuation of a stopping infltriunontality hy or through a deter-tor upon failuro or unduo .lltlviillt of it's \\'arp-t liro:|d. and a dov'u'o operative at -will to provcnt actuation of tho. stopping iastrumontality upon oot-urronoe ot surh warp t'ault" whilo the sliotlt'(i1'iiiiiig moohanism continuos to oporato.

ii. In a loom. a shippor, a knock-oft memhor lhorofor. a wax-patopanotioz mochanisni, an operating oonnecttiou,

invluding a ooupling'. hotn'oon Siliti inoohanism and tho lilltu'ibtil'l' Illtllll tl' and a manually oporalod roupling' ooutrollor at tho front: of tho loom. to roudor the oouplin': inoporatiro and thorohy at tho \\'ill ot tho oporator ronrlor tho Stopinution moi-hanism inoIlot-tiro \rith rospoot to tho ahippor.

H. In a loom. a ahippor, a kuook-ofl' dovioo thorotor, a warp-stop-moiion nwrhanism. and moans. inoludiu; a tfollllling :ulapt'od to ho roloasod at will. to oporato tilt knot-l0 oll' (Iorioo hy or through tho stoppiotion moolmuism. roloaso olthe coupling romoviu; tho lcnot'k-otidorioo from oontrol of tho atop-motion lllt 'ilzllliSlll whilo tho lattor (-ontinuos in oporationi 15. In a loom, narp stopanotihn moohanism normally adaptod to etToot. stoppago 0t tho loom upon tho ot-ourronoo ot a warp fault and moans to at will hold in ahoyaur-o tho. stopping t'uno'riou only of said illl('i\2llli. lli.

iti. In a loom. a shippor. a knock-oh monihor thorofor. a rork-xhat't 9. a. uarp'stop-motion. inoluding a link. and an arm 1' ronnootod with tho link to rook said shall. (tllllililltti ith a manually r'ontrollod oonpliu H to (outlook said xhai'tv and arm.

17. In a loom. a \Valp-Stop-nlntion. int'luilin: a link 5, an arm 7 ronnootod thorowith and adaptod to ho rookod upon tho t)l(llll'-"lltt5 ot' a \rarp t'ault. a Hililllltl'. roloasinq moans thorot'or. inrluding' a rook-shaft Jr a r|p|plin; S to t'ulllu'r'tl it with tho arm to ottot-t, rookin: of tho shaft. and roloaso. of the shipper. and a manually oporatod handlo to throw tho coupling out of oporat ion.

19 In :1 loom a shippor. a \varpstop'motion adaptod to ot'l'oot roloaso of tho shippor hy or through a slack \rarpthroad. and moans oporativo at will to rondor tho stop motion inotlnutire with rosport to tho shippor, \rhorohy tho loom oan he -run notwithstanding tho Siilt'k throad to \roam the lattor up lit. In a loom. shippor, an iustrumontality to dotoot tailuro or lliltillt. Siil(i ilt!\\ ot a \\':u'pthroa l. moans intorinodiato said instrumontality and tho shippor. to normally WILLIAM 1. ANDREW \\'itnos.\'

W. (Y. Crimnutsox,

II. Gunny Ciumsox.

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