US2326905A - Pneumatic thread holder for looms - Google Patents

Description

Aug. 17, 1943. R. 5. TURNER PNEUMATIC THREAD HOLDER FOR LOOMS Fil ed Feb.' 27, 1943 [wt/enter jab/741'; @firwez is provided with the usual transfer latch 42 for engagement with the hunter 43,011 the lay. The

' latchis ordinarily in its'downinoperative position as shown in Fig.- 1.and the transferrerarm is raised. Whenever a replenishing operationof the 100111 occurs, the latch-.42 is raised by well-;; known mechanism not shown into the path offfa ,lay carried bunter 43 and the 'transferrer arm- V Communicating with and depending from the part 5010f the intalge'mouth is a narrow slot 55 is givena downward motionas the lay-moves forwardly. During transfer the transierrerarni will engage the lowest bobbin in the stack which 11 is in transfer position. As shown in Fig. 1, the :1

front stack 31 is in transfer position so that'its lowest bobbin is in the path of the transferrerfarm and will be inserted into a shuttle S on the lay. The] magazine can, however, be roclied by 'mechanism'designated' generally at {M to place the lowest bobbin, in the-rear' stackjfl under the transferrer arm;

j Asshown in Fig. 2 the-bobbinsBare each pro- I vided with weft endsiwwhich extend away from the magazine toward fa threadholder designated generally atjH. As shown in Fig. 2 the lowest bobbin B of the stack 31 hasits weft endf-W' at the bottomof the group of weft threadsassociated with the bobbins in the magazine.

When this bobbin istransferred into "the shuttle S it'will move downwardlyto the position.

indicated at W2 in Fig.2 and the weft Will -then 4 separated from the aforesaid'group. ofthreads 'fafnd"may extendjupwardly toward the thread 7 holder asfsho'wh in Fig.2. All of the weft ends extend into fthe previously described tube is. and become wrapped arou'nd'the rod 2| to form.

a; yarn mass Y as indicated in, Fig; "3;. 'lfhismass V of yarn serves as an ancho'rage for theweft'ends. U and operates in addition to the pneumatic pres- 'sur'e'oi the .threadholdento hold thethreads in tube 29. 'Onjsome piok subsequent to transfer the thread of "theireshly transferred bobbin small-"enor gh to add very little 'to the crosssectionalarea 0f the intake mouth but wide enough to. receive a single thread. As the bot- .tom of the lowestgbobbin of the stack in'transi'er lpositiondisdmoved' from the magazine into the shuttle itsthread will descend as suggested at W2 ingEig 2 and.will enter the narrow slot 55 and 136001118 omp letely detached fromthe group of threads in the'uppe'r wider:- part 53 of the intake mouth. This thread W2 will extend to the right end oi1tube"29 as shown in Fig. 5 and will be in contact; with the otherflthreads of the thread holder, but it will be seen that the thread W2 extendsacro'ss the 'streainfof air-passing in the 'plete1y'into the cylinder 24.

i mphepasea has been customary to; form-the intakejrno'ut'h in a substantiallycircular form, but because of theLreqUirement that ;itbe as small 'as l-"p ossible' in orderto' insure-an adequately high: rate ,-of airflow through the tube 29, the thread oftheti'ansferredbobbin has not beenable to detach-itself sufficiently from the other threads. shown herein; howeve the narrow slot 55 enables the thread er, thetrans- 'ferring bobbin to detachitselffrom the group 7 'withoutiadding materially to the'cross-sectional .w ill be cutat'theadjacent selvage notshown andwill be freeyto' respond to .anyf'pneuniatic I ;The'matterthus far described; except as noted I hereinaftenf may 'be of usual constructionas set forth inuny'prior Patents 'Nos] 2,199,353 "and 2,199,354." j 1 f It will beapparent' from Fig'. Z'that the group of threads W lead downwardly from theirflref'v spective bobbins to the thread tube ZS-andare therefore-likely to extend along the "upperpart ly'and toward the magazine as shown in Fig.t5, so that the several ends willbe distributed as in'-- dicated in fltheupper part of 4 andflocated' I? in therelatively wide upper end of-the; in

take' mouthjdesignated generally. at'5l. As the thra'dsjenter the left end of the tubefn' they will be held more or less inspaced relationwith respect to each other but are likely toi-be "cluste'red together as indicated at 52 atf'the right '.end of the tube 29 as viewedin-Fig. 5 when' 'pass ing. out of the tube toward th'einterior ofthe' [cylinder 24: When the weft ends" are'of l'argediameter and soft theypack into and tend to stick' tojeach other. It should-be notedlthatthe threads "of the 'highest'bobbins f in the magazinev are likely to engage the" upper part of thetube 2.9 near its intake mouth orjat theleft endof Fig 5, but as thebobbins descend in the rnagazine' their weft ends become frnore and more nearly hgrizont'al and becoine detached from the massof threads at the-top of the tube 29 as they. move downwardly into the part. v5!.

of theintake' mouth, as indicatedinFi'g.

amass at 52 off the tube. Ihe latter may be inclined upward- I hobbi area of the intake mouth andftherate of air moving intothetube' 29 is sufiicientlyhigh to ei'fect removal of thethread-when it is out v From the-foregoing it wm be seen that I ha've proyided a simple form o f'threadholder theiny) 'take mouthiof which-is so formed as to insurea proper rate of flowyoi. air' through'the tube 29 jatthe sametime enablethe thread of the'transferred bobbin to ,detach "itself from the other threads in the tubeand extend acrossthe stream oflair rushing into thelintake mouth. It will also be seen thatas the -bbbbinsfdeseeridin 'the magazine their threadsjtend'tb jnji'ov'e downward yi n't the; wide upperipart sa 6r ,-the"intake mouth n: preparation fori the .finalf separation from the;groupoilthethreadshf the transferred sizes 'oiTyarns it :ha's."particular value in the weaving of fabrics requiring 'c'oarsejweft.

f Haying t h'us desorib'ediny inventlion'it. will that changes and 'hiodificatidiis imay. be made therein, by .thosel skilled in the art v v'vith-i outjdepjarting froni the sesame scope ofthe Vinventionand;I"do- .not wish tdbe'lin ited to the de sihe e n di l ed ut wh t aim is:

;;.1, a pneumatic 'threadqholderifor a :weit. re.-

1 plenishing-ilqom havin a sgroup of reserve bob-1 bins andihaving yprovisionifor: moving :a :bobbin 1 downwardly --iromithe groupiinto Ia shuttle below:

- the" group.

aidabobblnshaving ;we'ft: ends ex-. tending herefl'om; a .pneumatic..xthread jholder tube into whicha. draft'jofi air isi'drawn to a't-.v tract the weft'endsintolth'e. tube, said tube hav-. .ing an'jefndthereofrfacinglthe bobbins andprovided;withfanintake. mouth thei-upper part 01 which islrelativelylar'ge to receivettheweftends my invention. Withfzill from the bobbins in said group fand" the lower 1 part of which is restrictedcto end of a bobbin in thefshuttle -rep1enishing-loom{ having aagroup' or reserve :bobbinsand having provision ifor transferring a' .holder tube-having anjintake mouth into which adraft of air is drawn for. the purpose*j-of at- 'tractingsaid weftends through said mouthand into the tube,

cating with a relatively narrow'lower partof the,

mouth'sopositioned as to receive theweft'endof a bobbin transferred from the grouplin to said shuttle 1 tlebelow the'group; said bobbinsfhavingweitends extending therefrom, a. pneumatic thread 7 "weft'ends through the mouthand intothe: tube, a

said mouth ha atively largeto receive theweft ends'o'f ithe} bobbins in said group;

' "the last named We 'fpartfoi said tube, a

' ;1nu nicating with said large last named weift H V the interior of saidtube from'a point adjacent 1' V 1 l. In a pneumatic A "bins and having" provisio bobbin downwardly from ends extending theref in}; said weitlends'pn' v intake mouth and intojthe tube and causing the I r tube, saidiintake mout wide upper part coinmunica ly narrow :lower :part

' from the bobbins'inf s weftgend of a bobbin j-tr group] into said shut into the narrow part of saidmo the weft ends located "at the upper tube; T5.'In*a' replenishing loom having a v-groupof freserve bobbin downwardlyiro'm -tle below the group; "ends extending'the're eive' the: weft V 2. In ahpneumatic threadholder ro 'a'iwert bobbin "downwardly from the group ih-tofa, shut tlebelow the group, said bobbins hav'ing Weftg ends extending therefrom, a I pneumatic.- thread I saidintake mouth having awide relatively large upper jpart'to' receive the weft, ends from the bobbins in said group communi-o ,3; In a pneumatic thread iholder'ror -a weft bobbin downwardly i'rom the-groupinto a shut-,

older: tube having-"a mouth into which a drait ving an-upper part whichfis -ra a the tube so located that f t ends lead along the'u'pper nd'said mouth having a rel dly extending partbcm; partof the mouth 7 toreoeive theweft end of a bobbin transferred from the grou intosaids'huttle and-cause the endo'to extend diagonally acros's ativelvnarrow downwar to said narrowpart-of the mouth toa point ad-' jacent to the upper partof-said tube, 1 e i thread ,holderfor I aweft group; oi'reserve bobn" for transferring a replenishing loom having a the group into a shilt-g tle below the group, said bobbins having weft ea tube having an intake mouth intowhich a. column of air is drawn for the purpose or draw H eumaticallythroug'h said" all the relatively wide part ofansfe pwardlv toward ing rfrom the latter pneumatic thread holder] fora ,weft

isionior transferring La- 6? $11. group in hut: said bobbins having weft' from, "a hollow thread holdake mouth into whicha.

er tube having an int i I Y column of air is "drawn-for threkpurpose of draw 1 I bobbins and havingf p'rov ingsaid eftends fpneumatically through said int 1, eft" ends of-ithe, i r roup enter s aration offisaid weft endsfin aagrcup, an

I bobbins land replenishing loom havinga group of reserve bobbins'andhaving provisionior transferring a weft ends extend1ng thereirom,

thread. receiver [comprising i a", h

' oneendjof"whichioomrnunic 7 member "and the other end of which isiformed with an intake mouth racing;

and said intake mouth having a low 'wardly irom'sai -jsaid hollowm v i mngor air-to, be detachedfby the latter from ads at thetop ofsaid tube I a weft -.re'plen.- m V pneumatic thread holder, said tube 7 rom, a v hollow v thread ,1 91d v "the ubber part r said Jishii g" 310cm pneuma I the upper' par t V oss section of: less diarr eter than the di 1 d thelower partoiwhich a tioally extending narrow' 7 part theoross sectional-area of which iscless than the. crosssectional area ofsaid upperpart."

ng tube for-a weft, replen- 7 io thread holder compris v eendof whichis formed 1' hole-shaped intakemouth f de vpart communicating; with ameterf'of the tube an having an upper-W1 mouthbeingisoishaped-that the weft endsjfrom 1y wide upper part of said intake mouth and'the;

va bobbin transferred into said shuttleiand' lo- *"cate the Vlas't named -weft below the weft'ends r V of the bobbinsin said grouny 6. In a "pneumatic replenishing loo shuttle below b the group," sai within which a partialfvaouum ates with the} *of "said; hollow said'abobbins an moves L due to the ar mb r vpart jof rel dQintofwhich a; column of air tial ivacuum 'inysaid hollow ftend along. the upper v or said hollo group to the interior o r t' bobbin transie diagona isaid'fgroup of'thre 75 A thread receiving tube for ishing loo which has. a

.having ja body.

- cylindrical form but one end of which is con-,

structed to have a thr which is ofsubst'antial circufi 3.19: A thread receivi ishin'g loom Ipn'eurnat ng v a hollow body on o with a "substantially key e I t d. J

.th grou relativebobbins 'in thei lower--part of aid relativelywide part pf the mouth at points below-theweft ends of the up- 3" sin the roup to, effect a partial sep- 1 w depending part communicating partto receive the weft end-oi thread, holder for a weft hayingaf group ofg reserve having pr ovisic'm" fortransferring j a'lbobbin downwardly irornfjthe group into a; 1 d bobbinsqhaving" i.a"pneum atic, oilow member created, a tube g nteriorsaid intake; Imouth having: an Lupperr;

atively. large cross sectional area tol Qj weft. endsbf the bobbins insaid group and'from which thelast named weft ends" eX I w member Q i' f s the interior of said tube/to ember and in the path of saidcol- L having one end iorrne'df to def ne; ans'intake art of whichhas 3a: relatively 1 area and the lower part of v relatively small cross section'ai V vv area, communicatingwithisaid,upper partp'flf.

a 8. A thread treceivinfgftube for. a weit r'eplen r f n tic thread holden 's'aidtube, e the greater part of ,which'is of ead receiving intake mouth remen

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