US1768746A

US1768746A - Apparatus to prepare yarns for weaving

Info

Publication number: US1768746A
Application number: US249790A
Authority: US
Inventors: George B Cocker
Original assignee: Cocker Machine and Foundry Co
Current assignee: Cocker Machine and Foundry Co
Priority date: 1928-01-27
Filing date: 1928-01-27
Publication date: 1930-07-01
Anticipated expiration: 1947-07-01

Description

` .July l, -1 ?930.` I G. BCQCKER l 1,768,746 n APPARATUS T0 PREPARE YARNS FCR WEAVING FiledJ'an 2v 19a sl n s nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn n TTI.

Julyl, 1930. G. B.- cocKER APPARATUS TO PREPARE YARNS FOR WEAVING l Filed Jan. 27. 1928 3 Sheets-Sheet 2 ATTORNEYS.

i Patented July 1,k 1930 New* " r UNITED/STATES? GEORGE B.; cooRER, OF GAsTONIA, NORTH CAROLINA, AssrGNoR To OOOKER MACHINE j AND ROUNDRY COMPANY, oRGAsTONIA, NORTH` CAROLINA, A CORPORATION OF NORTH CAROLINA'k "f v ARPARATS l To TREPARE YARNs n FOR wnAvING y Abpii'eauen'sia Januaryk 27, 192.8. serial Nq. 249,790. y

1 Thisinvention Yis concerned ywithfthe prep-- aration ofvyarns for -weaving, and `more specilically with sizing, slashingand Warping of ne yarns; e. g.,fsinglek ply cottonv strands, tol render them suliiciently strong forV capacity to resist rupture under strains induced incidental to subsequent manipulation in the looms by which they' vareV in# corporated into Itextile fabrics. method heretofore practiced inV accomplishing the foregoing involved two distinct and separate steps, to 'wit section beaming of yarn ends, and mounting 1 of ,the section;-

' beams in a creelassociatedwithaf Slasher e for grouping,""sizing,v and nal winding of the yarn ends onvwarp beams suitable for direct transfer to the looms; the number of.

section beams required for the `purpose depending of course upon'the sum total of the ends desired on` the final warpV beam. f Even with lexercise-ofthe'utmost care in wind' Ving, it is absolutely'impractical' to produce.V

section beams with the yarns packed to the same density in each. due to Vdiverse ma rfluences, such as vvariation in the vgage of the j yarns, vdifferences in tension, vchanges" inl atmospheric: conditions,1 etcq- Therefore,

p subsequent application of rotative restraint*` `to the same degree uponk 'all-thersectioni beams employed in theereel associated with. the Slasher did' not-'predetermin'e uniform tension on the yarnsduring the slashing process, with the result that thisoperation? was invariablyattended by' `frequent. rup tures-resultant'V upon stretchingof the yarns beyond their tensile strength. Moreover,j upon exhaust of the section beams, it was necessary to completely stop l the apparatus.`

forV substitution of other beams andrethr'eading. it with the new ends, a procedure? that was not onlyl tedious and exacting but entailed v,wasting of comparatively :1m-gef amountsfof yarn.'. y

`My inventionV is directed toward providing KVan elieient reliable apparatus-whereby the operationfofyarn preparationlis made absolutely continuous Vwith delivery of the ends under minimumk f tension.KV This de-il sideratum I attain through employment of.

a magazinecreel (one in whichtheyarns The usual i are drawn overend'from stationary'indi-V'. vidual packages grouped'for successive sub-VK stitution) to the advantages'of completely' eliminating the initial section beaming step? hereinbefore vreferred to, eliminatingV all waste,y and attaining increased speed and moreor less diagrammatically, the side elevation o'fa yarn veniently embodying myV invention.

Fig. II'is a plan View of the organization.` Fig. III shows in plan afragment of the `yarn package creel, of the magazine' type,

which I employ as a part of the apparatus.` Fig. IV'is a fragmentary rear elevation of one ofthe yarnfguideboardslemployed t in connection with the creel.-

Fig. `V is a sectional view to a larger scale taken locally, as indicated by the 'arrows V-Vy inlig.y IV. Fig. shows avertical sectiony of the re` serve 'f accumulator which I- interpose betweenthe creeland the Slasher; and i f F igs VII is a'conventional diagramoi the various devices that cooperate in effecting automatic partial, or total, stoppage of the Vapparatus consequent upon yarn breakage.

:With reference first more particularly to preparing apparatus con-v sov Figs. I and II, it will be observed` that theV apparatus comprises a creel lOwherewith-isj lassociatedanfexpansion comb frame 11a Slasher l2 with :itspsizing vat 13, and an accumulator 14 whichv is located in the interval between saidexpansion comb Jframe and thesiZingVat. y p j In thefpresent instanceV the creel 10embodies a numberV of separate upright wing sections V15 sta`tiona `rilyY supporting a ymultiplicity of yarn packages having the form of cones 16, said sections l5 being disposed in? opposing couples and `in equalv numbers line ofthe yapparatus with` capacity or'anN gularadjustment to suit various conditionsvr of practice. V` As shown in Figs. I yandl III,I the 'cones 16. are arranged in verticallyy to oppositesides of the longitudinal center`A` www" spaced horizontal rows and grouped in pairs, t e components of each pair being complementarily tilted to axially align with a conimon guide 17 so that, by tying the yleading endofyarni on the auxiliaryone to the trailing ,end on'the active cone of a pair, a continuous. supply may vbe had from the creel by successivesubstitutions, as they pack for 4cones 16 are exhausted. A ynnnpqsicskage support of the described type is known in the art as a magazine creel, and although not in itselfnovel to my invention, its use is, however, favorable in the present connection, since, aside. from afording a source of continuous yarn supply', itgi capable of deliveringV at ver f much h'ier vspeeds than other types o creels, w rein tensional strain is imposed on the NWS Y by virtue of their having .to rotate pukagesl. VVithjeach of the Creel seotionsl, I `associate. a transverseA guide boord 18V constructed fromr insulating inaterial with eyes 19 serially arranged in hor izogtal lines vat levels corresponding to the horizontal rows of the? yarn cones 16.V At` theback, and beneath eachrow of the `eyes 19,'thp fguideboard 18 is equipped with a seriesy of electric stop control instrumentalities 20 to` an equal number. These control nstrumentalities 20 are bent to the angular configuration shown, preferably from stout wire while the components of each group are` mounted for freeV and independent swinging movement upon a. commonful- :rumrod 21. VNormally, the loop ends of the controls 20 aresupported by the yarns y l Yilithe interval between'the eyesv 19 and a directional guide bar 22. In the event of a break occurring in a yarn -Y, the `corresiponding control 20 is released to `drop to the otted line position shown in Fig. V, thereby to electrically bridge between the metallic` bearing bracket plate 23, supporting the fulcrum rod 21, anda parallel companion con-v tact plate 24. The plates V23, 240i! the several` groups'v of` `controls 20 are respec tively'connected in parallel by conductor strips 25, 26 (see Fig. IV)'leading to ter. minal posts 27,28. vThe function of the` electric controlsystem just described will be set forth in detail later .on herein.

After passin through the guide boards 18, the.yarn en Sl Y lare directed to the frame,

11, which, `at opposite ends, supports expansion combs .31, 3,2, off a 4conventional type, to reduce the `warp, sheet to the desired width for Vprogression and winding vin other 'of the' apparatus. The expansion V 11 also provides bearingsior :n pair of superposed draft rolls 33,- 34 which m `instrumeletal in drawing the yarns Y from thecreel `10rand through the expan- 31, 32. These draft rolls 33, 34 are driven., through interposed reduction 3.5 IIOID, a `Shaft 36 equipped with p shipper toonedfor: maintenance of a reserve throu li` cooperationl of positionally-fixedl upper ro lers and iloatinglovverV rollers 46 that'are free to rise and fall under guidance of slots47 in opposite sides of the afcumulator frame. For the. purpose of insuring paral` lel travel, relative to the fixed uper rollers 45, the iioating rollers 46 are provided with pinions 48 for `cooperation with toothed racks 49,` along the guide slots .47. An electric stop control 50, show-11 near the top of the accumulator frame, comprises4 a vertically shiftable membenl with oppositel projecting arms extending.A horizontally across the path. of the floating rolls 46.

Thus, when the member 51 is lifted through,

rise of either V('or both)` ofthe floating roll- 'ers 46, a -spring contact 52' thereon will bridge a pair of

conductor terminals

53, 54

set in an insulatoryblock 55 on the ac; umu- -immediatelfv 4upon emerging from the size bath 13. 4he aforesaiddrums 62, 63, and the size vat 13 may be heated from Ya.A comrnonsourcei of steam through connecting piping, jshown at'j64 'in Fig. I. After drying, theyarns Yare finally directed over various guide and feed rollers 65, on the Slasher' frame 66, to the rotating warp `beams 67. Inthe present 'instance,'the main shaft 68 of the Slasher 12 is equipped with a 'high speed ,pulley 69,- a low speed pulley 70, and

anidler 'ulley 71, as well as with a sliding 2` for transferring 4the drive beltv 7 34 from one to the other of said pulleys.

. In the drive system for the apparatus I interpose .a conventional type of manually- ,colairollablev variable speed device 75, which may derive motion from a. suitable prime mover, forexarnple, an electric'motor 76, (Figs. I` and Il). The power from the shaft 77 of the variable speed device 75 is trans mitted, throughy a belt 78 and countershaft 79, tothedriving belt 73 of the Slasher 12;A

while the movement of the differential speed shaft 80' of said device is, at the same time,

Vcommuniicated to the belt 39k by which the i yarnV draftroller's 33, 8.4, on the elXpansion comb frame 11, are driven. A

kThe meansv for automatically controlling y Vthe apparatus in the event of yarn krupture Cri Yincludes a longitudinal rodk Which'is supported for endwisesliding in opposition to the pull of a spring 86, by bearings 'shown at 87 in Figs. II and VII. At the right hand end, the rod85v'has an extension 88 that is attached, With capacity for lost motion, by a friction coupling89, thefree end of said eX- tension having pivotal connection With an arm secured on thevertical shaft 91 which,

at'the top, has a second arm `92 adapted tof communicateimparted movementl to the belt shipper slide rod 41 associated with the drive of the draft rollers 33, 34. Near its left4 hand 'end the rod` 85 has an operative connection, through a' bell crank leverz93, Withrk the belt shipper 72 of the Slasher drive. In-

termediateV its ends, thev rod 85 is equipped Y With lugs 94, which are appropriately spaced for successive cooperation, respectively, with electrically-actuable stops 96, 97 of standard design embodying, forexample and as graphically ydepicted inV Fig. 'VIL latch bolts V98 With solenoidsl99 for retracting them against gravity or spring pressure from a normal projected position;l As

. shown in Fig. VII, the solenoid coils 99 of the latch means`96,"97 are connected by leads 100 and through the contact controls 20 and 50, respectivelyon the creel 10 andthe accumulator 14,'in parallel With line conductors 101 102, extending vto a" convenient source (not shown) rof electric current. The

. Wiring system further includes switches 104, V105 (preferably of the push button type) expansion combs 31, 32V on the frame 1l` under draft of the rollers aforesaid, progressed through the accumulator 14 and bath `13,`thence around the dryingdrums 62,63

of the Slasher 12, and finally Wound upon A 1 the Warp beams 67. In theevent of yarn breakage atthe creel 10, the corresponding stop control 20 (or controls) Will dropas previously explained hereby closing the cir-- cuit through latch means 96. With resultant tripping of therlatchmeans 96, theslide Vrod 85 Will under'recoil of the springv 86 `:hift to the VleftlFigs. II and VII) until the lug 95 thereon vengages the bolt 98 of* latch means 97. This shog `of the Slide rod 85 is attended by` shiftngofthe belt Shipper 40, associated andthe draft rolls 38, 34, fromthe tight pulley 137 to the loose 'pulley 38 With consequent suspension .in thedraft of yarn endsY froml the creel 10; and con-` currently cause Vshifting of the belt shipper 72 associated With the Slasher 12j-froml the high speed pull'eyl69 to' the flow-.speed pulley 7 0.` :Thereupon the slasher'l2 Will operate at reduced speed and ,through temporary satis-v faction of the'latter from the reserve inathe accumulator'lf, ya timeinterval is afforded forrepairing any minor breaks. When the breakorrbreaksfin the V.yarn' havel been remedied, the apparatus may bere-started byL `manually shifting the slide rod 85 with the aidk of either-of the handflevers 106 Shown kin Fig. lVII whereupon the operation proceeds continuously as before'. However, in

the eventthat the reserve in the accumulator 1111*is-exhausted'beforethe broken yarn ends Yoan be repaired, the Slasher 12 is fautomati cally brought 'to a complete standstill through risev of either or both of the 'floating rolls `'116 to: alevel-sufliciently high to actuate the stop control 50 and cause closure of thecircuit throughthe'latch means 97. Consequentlupon Withdrawal of the bolt 98 yof' ed a second time for furtherrtravel, the belt v39 associated With the draft rollers 33, 34 re-` mainingon'the loose pulleyBS (byvirtue ofi provision for lost /motion Vin.` the friction 9 coupling89), While the belt shipper 72 asso-l etA ciated with the' Slasher 12 is advanced to` transfer the belt'73to the loose pulle`y7-1.V

By use ofthe specilic type of V`Creel-10 hereinl shown and described, it Will be seen that the .yarns Yiare delivered absolutely free from restraint so that the apparatus can be runatvery lhigh speeds. f Itis, however, obvious that Vany other form of `individual package Creel .maybe substituted, and lilr'e- Wise, any other form. of standard Slasher 12 employed inflieu of the type illustrated,4V

these considerations :being entirely optional and having no influence upon the general Y performance of the .apparatus in attainment of the advantages referredVV to in the introductory Lportion of this specication. Having thus described lmy invention, IIl claim; Y

1. In apparatusto -i preparey yarns I for 'j Weaving, a magazine `crevelcapable` of'continuously Vsupplying yarn ends from indi-f vidual packages n at rminimum uniform-tension and athigh-V speeds; in combination With means for'4 continuouslyv `drawing'fsaid yard vendsrfrom the creel, a Slasher', automaticvmeansqtoconcurrently stop draft of theyarn ends from the creel and togreduc-e the Speed of the Slasher in the event of yarn breakage, vand meansfor maintaining a reserve accumulationv in the yarns lto temporarily Satisfy the demands of the Slasher at the reduced Speed in affording a time interval` for Vrepair of theyarn breaks.

2. In apparatus to prepare yarns for sion mvg, a. `ma ezine creel ca able o'f continuo y supp ying yarn en s from indi-Y vidulmckages at minimum uniform ten-v athigh` speeds; in combination with` for `contix'iuously drawing said yarn ends fromthe y creel, a Slasher, automatic means to concurrently stop draft ofthe yarn. endsfrom the creel and to reduce the speed of the Slasher in the event of yarn breakage, moans for maintaining fa reserve accumulaf tionin the yarns to temporarily satisfy the l demands of the Slasher at the reduced speed in affording a time: intervalv for repairv of the yarn breaks, and coordinated automatic means to `stop theslasher upon exhaustion of the reserve accumulation aforesaid.

. 3. In apparatus/to prepareyarnsfor'weav.- w f ing, a magazine creel capable of continuously supplying yarn ends'from individual packages at minimum uniform tension and at high speeds; in'combination with means for continuously drawing said yarn ends from the creel, a Slasher, an accumulator between the `draft means andthe Slasherv comprising `positionally iixed and movable rollers cooperating tomaintain a festooned reserve in the yarns, automatic means to concurrently stop draft of the yarn ends from the creel an to reduce the speed of the Slasher in the event of yarn breakage with temporary satise yfaction of theslasher from the reservein the accumulator, and meansoperative upon i approach of the movable Yrollers of the. ac-

cumulator to the companion fixed rollers to automatically stop the Slasher also when the reserve in theaccumulator is exhausted.

i 4. In apparatus to Vprepare yarns for weaving, a magazine creel capable ofcontinuously supplying yarn ends from individual packa es at minimumruniform tension and at high speeds; in combination with Vmeans for continuously drawing Said yarn ends from the creel, a Slasher, anaccumulator between the draft means and the Slasher, means tuy c normallysynchronize the Speed of the draft means and the slasherfor `maintenance of reserve yarn inthe accumulator, and .automatic means torconcurrentlyy stop draft of the yarn ends from the creel and to reduce the speed of the Slasher in the event of yarn vbreakage with temporary satisfaction oi' the Slasher from the reserve maintained in the j aecumulatoafY c p y In testimony' whereof, I have hereunto ed m name ait-Philadelphia, Pennsylvanla, th1sf24th day of January, 1928.

GEORGE B. COCKER.

means