US1911730A - of worcester - Google Patents

Description

' May 30, 1933. R. ca. TURNER 1,911,730

ELECTRICALLY OPERATING WEFT DETEgTINGfiHUTTLE Filed Sept. 26, 1930 17v MEN-r05" /-?/c/-/,4/ P0 G. TURNER g Z77UFINEY5 191 hau sted weft carrier.

Patented May 3%, 1933 warren stares Brennan GREENLEYAF TURNER, or woncns'rnn, MASSACHUSETTS, ASSIGlVOR; To or woacnsrna, MASSACHUSETTS, A 003- i 'CROMPTON 8: KNOWLES LOOIYI WORKS,

PQBATION OF MASSACHUSETTS WU E;

.ELEo'rnroALLY, OPERATING. wnrr DETECTING. SHUTTLE This invention relates to improvements in spindle shuttles constructed to detect the condit on of weft, and 1t is the general ob ect of the invention to improve shuttles of this type 1 and provide a detecting element which is con.-

being shown inelevatlon', the detector veniently and substantially mounted.

The usualspindle shuttle has a transverse pivot pin about which the bobbin holding spindle moves to permit removal of an ex- It is an important object of mypresent invention to provide a weft detecting element, preferably to cooperate with an electrical circuit, mounted on'the' pivot pin of the spindle so as to render nnecessary the provision of an additional pivot for the detecting element.

Shuttles of the type specified usually have: someform of spring. clip whichholds the spindle in both its normal down position and also the inclined position it assumes to permit manipulation of the weft carrier. It isan important object of my presentinvention to construct the detecting lever so that it will be held by this spring within the outline of the v split spindle where it cannot interfere with longitudinal movement of a weft carrier when the spindle is raised to remove the carrier.

It is a still further object of my invention to provide a lightyielding spring or similar device located between the usual flat spring and a portion of the detecting lever tending to move the latternormally to indicating position but prevented from accomplishing this result by weft presence; The detecting lever moves preferablyvertically in upright slot cut in the head end of the spindle. It is another" object of my invention to provide a resilient means to hold the spindle parts separated so that they will" not clamp against the detector lever and interfere with free movement of the latter, said reslllent member also being so placed as to serve as a stop tolnnit movement of the' detector lever in one direction.

With these and other objects in view which will appear as the descriptionproceedsmy invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims." In the accompanying drawing wherein'a r Applicati on filed September 2 ,1930. Serial No. 484,596.

convenient embodiment of my invention is setforth Fig. 1 is a. vertical sectionthrough the central axis of a sh'uttle made' according to my present'invention, the tip ends of the shuttle lever being in non-indicating position, i. v Fig. 2 is a top plan view takenin the direction of arrow 2; Fig. 1, showingthe cop and mass of weft thereon in section,i'part of the top spring which co-acts with the spindle being removed for the sake ofclearness;

Fig. 3 is a view similar to a portion of Fig. 1 but with the detecting lever moved to indicating position; t p

Fig. 4 is a'vertical transverselsection on line l4 of'Fig. 3, 1

Fig. 5'is aview similar to Fig. 3 but with the spindle in elevated position and-showing the detector lever moved out of the pathof the weft carrier by thetop spring and sea Fig. 6 is an enlarged top plan view s1milar as by welding to form a tip 14. Each of said legs is provided with a' head15 having a downwardly opening slot 16 fitted over the pivot pin 10. An upper 'or top leaf spring 17 is .held to the shuttle by ascrew 18 and co-acts with the heads to hold thespindle normally down in the position shown in Fig.

1 with a lip 19 on one or both heads engaging a portion of the shuttle body to limit angular movement of the spindle in a right hand direction as viewed-in Fig. 1. l

The two legs are spaced-and define between them a vertical slot 20in which is mounted an 'electrical weft detector lever 21 the right hand end of which as'shown in Fig. 1 is'provided with a roundedprojectionor yarn engaging finger 22; The lever has" a down-' wardly opening slot 23'formed in the header left end thereof as'viewed in Fig. 1 to fit over' engages the coils of smallest diameter on the carrier lying across the slot and are held by them against upward movement under action of spring 25.

Asshownin-Fig. 6 the. legs l2,and 13 are provided with aligning pockets 29 which receive opposite ends of a small-stiff compression; spring 30 which tends normally/co.

holdzthelegsin spaced relation so they will not cramp the lever; This spring also engages the bottomiof; the lever .to limit down wardmovementof the latter with respect to the spindle. v

The shuttle is particularly'adaptable for electrical indication: of weft exhaustion and has inone wallthereof contact plates 31 and 32 which are placed to contact with brushes 33 and; 34,. respectively, every alternate beat of the loom. Plate 32 has electrical connec-- tion with the pin: 10 and is therefore electrically connected at all times with the lever, the

spring'25 assisting in maintaining good electmcal' contact between the pin. andv the lever.

' Theother'plate 31. is connected'by means of a wire 35 to a. bottom leaf spring 36 held by meansof arscrew:3 7 to the bodyof'the shuttle and. havinga. free inw ardly projecting end 381pnovided with. arib-39: q The latter is nor-- mallyzpositioned out of contact with an arm 40 depending from the lever. The upper end of the lever is providedwith a notch 41 positioned forengagement with the inner end of raised;

Under-normal: conditions when asufiicient supply-of weft 1s present the-finger 22 will the upper spring 1.? when the. spindle isbe confined'wit hinthe outline of the carrier 2T,.or:willihe held in therelativelyflow positlQIIZShOWIIrlH Fig. 1- withv arm 40 out of contactiwithztheirib 39: Under those conditions theme isno electrical." connection between the plates 31 -and-r32; and the-loom continues to operate without change. When the weft becomes sufficicntly'depletedtto-uncover the slot 28;, however, the finger 22 will move up wardly therethrough; around'the pivot 10 under: influence of the light compression Spring25... This angular movement of the levenwill' bring thearmA-O into contact with the rib 39, thereby electrically connecting the plates 31' andz32 so that the brushes in contact withrthe-plates'may close an external circuitnot sh'own'and thereby elfect achange in the operatibn. ofwtheiloomp. This: change may:

cause either stopping of the loom or an exchange of shuttles, and it will subsequently be necessary for the operator to remove'the spent weft carrier and replace it with one having a .full supply of yarn.

In order to remove the old cop the spindle is moved to the inclined elevated position shown in Fig. 5. It will be noted that as the spindle is raised the top spring 17. will: engage a surface ll of the lever and positively lower the latter to move the finger 22 to a position within the outline of the spindle, thereby permittingthe cop or weft carrier to be removed.

The spindle has the usual screw thread T which. cuts into the inner surface of the cop to hold the latter in placel A rotary move.- ment ofthe copis necessary to place it on. or

remove it from the spindle,.and it is for this reason that finger. 22 must bemoved out of.

the slot in the cop so asto permit free turn ing of the latter.. This-result is accomplished by the mechanism j'ust'described.

The springs 17 and. 30 areso placed'that the. downward force exerted by the former.

will pass between the pivot pin- 10 and. the

compression spring 30 which acts asv astop forthe lever; Inthiswaythelever is-held. in a definite positionwith. itsdetectingend' located within the outline ofthe spindleand. the fingerout of the slot 28 in the cop. If desired the under side of the lever can be'so constructed as to engage asolidpart. of the cop atjall times when thespindle is inclined. and thereby prevent, the under side of the lever from entering the slot.

When thespindle is .elevatedto the position shown in Fig.5 the top'leaf spring 17f will coact with the heads 15 toholdthespindle:raised.. During the liftingiof the spindle lower spring 36 yields as arm 40,passes.from the .outer totheinner. side'of theribr39, movingfrom the position sho.wn in:ll-ig-.. 3.to-that shown in Fig. 5. r 4

. When the fresh cop isbeing applied to the spindle the detectorv lever willremainwin the, position showninFig. .5.so as not, tointerfere. with rotary movement of. the cop.. The.

proper longitudinal and angular positionof the cop is determined by means of. a. marker or the like so as .to eauseathe slot 28 to register.

with thefinger 22, after which the spindle maybe depressed: to theposit-ion. shown in; Fig. 1. This latter movement will ree'stab lish connection between thespring 25- and the arm 24: and presence of yarn across the slot 28 will-hold the arm 40 out of contact weft engaging detccting'leve r is mounted onthe spindle pivot and movable in the slot between the two legs ofthe spindle. Further.-

more, the spring at the top of the. shuttle which'co-acts llithellstlal way. with thespindle head servesealso to depressthe detector lever so that the fingerend'of the flatter Will move out'of slot 28 :iii' the cop, thereby permitting uninterrupted rotary movement-of thevc op around the: spindle. It will also be seen that the light spring 25 pushes downwardly on the arm 24 to insure good contact between the lever and its pivotal support and also requires the finger 22 to move against 103 the yarn on the carrier. It will be further noted that the small stiff coiled spring which holds the spindle legs separated acts as a stop for the detector lever andis so placed that the top flat spring 17 may co-act with the pivot pin 10 and the stiff spring 30 to place the lever accurately and definitely within the outline of the spindle;

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a shuttle, a spindle to hold a supply of weft and having a slot, a pivot for the spindle extending across the slot and around which the spindle moves, a detector element in the slot pivotally mounted on the spindle pivot and normally held in a given position when a sufiicient supply of weft is present, and limited as to movements in opposite directions along the pivot by the spindle, and means acting at weft exhaustion to move the 355 element angularly from the given to an indicating position about the spindle pivot when the supply of weft is exhausted.

2. In a shuttle, a spindle having a longitudinally extending slot therein, a pivot for the spindle carried by the shuttle and extending across the slot, a detector lever located in the slot and movable about and supported by the spindle pivot, and limited asto movements in opposite directions along the pivot by the spindle, the lever normally held in a given position when sufficient weft is present, and means effective to move the lever angularly from said normal to an indicating position about the pivot when insufficient weft is present. r

3. In a shuttle, a spindle to carry a supply of weft, a pivot for the spindle, said spindle having a vertical longitudinally extending slot therein, a pair of spaced heads on the spindle, one on each side of the slot, mounted on the pivot, a detector lever having pivotal connection with the spindle pivot between the heads, and means effective at weft exhaustion to move the detector lever about the spindle pivot to exhaustion indicating position.

4. In a shuttle, a spindle to carry a supply of weft, a pivot for the spindle, said spindle having a pair of spaced longitudinally extending legs each mounted on the pivot, a

weft detector lever. mounted on-the spindle pivot-between the legs, and normally acting yielding means to move the detectorlever about the spindle pivot to indicating position j when insufficient weft'remains on the spindle Ina shuttle, aweft supportingspindle', having a slot, a weft detecting elenient,-lo-

cated in the slot. and] limited as to lateral movements in opposite directions by the spindle, and: a common pivotal support for the spindle and element about which the latter moves oted-thereto, a weft detecting finger movable from-a position within the spindle te po-; sition partly out'of the spindle to indicate weftexhaustion, andcommon meansto holdthe spindle in inclined weft receiving posi- 7 tion andjalso to hold the detector finger with-.

in thespindle. p 7

7; In a shuttle, a weft carrying spindle pivoted thereto, a weft detecting finger normally located within thev outline'of the spin dle and movable to a position projecting be-' yond the spindle outline to indicate weft exhaustion, and means to hold the spindle in inclined position to receive a fresh supply of weft, said means efiective when the spindle is so inclined to move the finger to a a weft 'carrierhaving a slot therein which may be rotated about the spindle'when being applied thereto, a detector finger to lie nor,-

mally within the carrier when sufficient weft is present, 'andtending to move through the slot to indicateweft exhaustion, and means to hold the spindle ininclined position to receive a fresh supply of weft, said means also preventing the'finger" from entering the slot-as the carrier is rotated on the spindle while the latteris in inclined position. a 4 9. In a shuttle, a weft carrying spindle pivoted thereto, a weft carrier slidably and rotatablymounted on thespindle and having a detecting slot thereiniacross which weftextends when sufiicient'weft is present, a detector finger movable from a positionwithin the carrier through the slot to indicate weft exhaustion, said finger tending norto move through the slot, andmeans mally to hold the spindle in inclined position to receive a fresh supply of'weft, said means effective when the spindle is ,so inclined to I prevent the finger from entering theslot as the carrier is rotated "on the spindle.

Y 10. In a shuttle, weft carrying spindle having'a mass of weft thereon, a pivot there-c for, a rigid detector lever'mounted on v the spindlepivot, a detector finger forming'part pivotally when indicating weft ex- -hau'stion. i v 1 6, In a shuttle, a weft carrying spindle 'piv-.

I outwardly :and yielding means acting-on the offthealever and located :nonmallyiwithinithe the'zdetector.imtheslottin aadirection parallel w; c {9' ft and; tendin toumovg to. theespindle movement's; c i Ound" miss We g IntestimonyrwhereofiIThaveahereuntoeafr lever toun'ove the fingeragainst tlie aveft and fixed im'yislgnatumlefi'ective' at weftexhaustion tomovethe fin-*- ger outwardly and angularly about the SplII dle pivot; the pivot and lever formingpart of an: electric indicating circuit, and the yieldingmeans insuring good contact be tweenzthedever and pivot as-well aseffective to give-indicatingmovement to the finger.

1 1. In a shuttle, a spindle pivoted thereto and movabletoan inclined position 'to re-- ceive a fresh supply of Weft, said spindl'ebe in'g= formed oi twospaced} resilient legs, a detector-finger located between the legs, a

relatively strong resilient element "located between the legs to hold themapart to insure clearance for the finger so the lattenrnay move freely; said resilient element acting as a stop-to l mitflmovement of the fingerrelatively to the spindle in onedire'ctiom 1-2LIn a shuttle, a pivoted spindle having two spacc'd legs a relativelystron g resilient element 'tending to separate-the legs, a detector finger located between the legs and movable transversely of the spindle in one" dIIG'CtlOIl to indlcate weft exhaustion, and} means to-hold' thespindle-dn inclinedposi tionfrelatively to the weft to receive a fresh supply of weft, said means engaging the finger when: the spindle is inclined to move the same in a direction opposite to. thatvin which it moves to indicate exhaustion; said resilient element acting. as a stop to limit the last namedimovement offthe finger caused? by the means.v

13. In a shuttle, aspindlepivotedto the shuttle tobe moved upwardlyfroma position within the shuttle -.to apositon: inclined;

tothe longitudinal axis ofthe-shuttle, a de'- tector lcven pivoted with respect to; the shut tle and moving withithe'spindle asthelattcr is' raised; a: resilient electric contact for the detector element, a sunicient' supply of weft on the spindle holding; the 'detector'element out of engagementwith the resilient contact,

means to move the detector element intoto permit the contact element -tomove with the spindle beyond normal? contacting .posi

' tective when thespindle is aised to move AF'TURNEB;

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