US2363629A - Repeater mechanism for weft replenishing looms - Google Patents

Description

NOV. 28, 1944. w W K b 21,363,629

REPEATER MECHANISM FOR WEFT REPLENISHING LOOMS Filed Feb. 5, 1944 3 Sheets-Sheet 1 F158 v I I I0 INVENTOR WALTER H. WA| sF|ELn A-r-ronuev Nov. 28,. 1944' w. H. WAKEFIELD REPEATER MECHANISM FOR WEFT REPLENISHING LOOMS Filed Feb. 5, 1944 3 Sheets-Sheet 3 rim 1:;-

moi /3/ F16 fir-.4

Patented Nov. 28, 1944 bins.

Fancy weft replenishing looms generally employ amaga'zine having plural stacks of reserve.

' much finer yarn. a a i It is an important object .of my presentinvene RErEATEn MECHANISM Foe WEFT a REPLENISHINGLOOMS Walter Wakefield, worceste rpMass assignor to Crompton & Knowles Loom Works, WorcesterpMass a corporation of Massachusetts -Application February" 5, 1944, Serial No. 521,206.

14 Claims.

This invention relates to improvements in multi-stack weft replenishing mechanism and it is the general object of 'the'invention to provide means by which bobbins may be drawn inrotation from a plurality of stacks of similarnbobbobbins which are released for transfer :by a selector. registerable with the stacks one "at a time. In the usual loom there isa stackfor each shuttle and the selector moves in timed relation with .the shifting of the shuttleboxes which place theshuttles in action. In the Weaving of certain fabrics,however, onetype of weft is likely to be used more frequentlythan another type, and in such cases it is desirablejtousetwo or more stacks for replenishment of the'more frequently used weft. As an example,-curtains have clip spots woven with a coarseloosemweft similar toroving and a ground weave woven with of l the loom, having: the

shift through twoiequal one-space-shifts. Itis a further object of. the invention to providecone 1 nections between theshuttle boxes and selector. soconstructed that the latter will havea two space shift relatively to the; releasers for None of the one-spaceshifts; of the shuttle boxesand will have only a "one space shift relatively. to

the releasers for the second one-space shift of the shuttle boxes. l

. With these andother objects a viewwhich will appear as. the description proceeds,.my in-. vention resides in the combination and arrangement of parts hereinafter described andsetforth.

In the accompanying drawings, wherein a"con-- venient embodiment of my invention is set forth,

Fig. 1 is a-side elevation of a mu1ti -stackweft replenishing mechanismas seen fromthe center preferred form of my invention applied. thereto, 1:

Fig.2 is an enlarged vertical sectiomonline Of showing the operating pawl for the shaft in 'its extreme high'and low positions,

tion to provide mechanism by which theseleci tor acting through the bobbin releasers forthe several stacks causes rotation of a shaft or the likewhich in turnmoves a stop for the selector to;diiferent positions to cause theselector to register with the quence. movements all in the same direction and is provided with a crank connected to the stop and operative to raise andlower the latter so that itssteps may move into'and out of the path of the severalxstacks ina given seselector. H

In-certain types of fabrics twotypes of decora- The shaft preferably has step by step tive coarse weft are used, onebeing usedmore frequently than the other, and there is also afine weft for the ground weave of the fabric. In. such instances it is desirable to distribute the reserve bobbins in the magazine in the approximate pro:

portion in which the wefts are used, assigningv two stacks. forythe more frequently used coarse weft, a third stack for the less frequently used coarse weft, anda fourth stack for the finer ground weft. It is another object of my present invention to provide a form of controllerfor the selector stop so constructed that by a slight adjustment of the aforesaidcrank on the shaft the mechanismican be which three stacks supply weft of the same kind to a form 'inwhich only two stacks supply the same kind of weft. i l

.In this second or modified form of the invention three shuttle boxes are used which can converted from a form in stacks,

r Fig. 3 is a view-similar'to Fig. 2"but' showing the pawl :in the two-positions which it assumes atthe beginning andiat the end of a-turning movemento-f the shaft, "1 l 1 Figs..4,5 and Garediagrammatic views showing the preferred form of control exercised by the .shaft over the stop when the mechanism is H set for drawing bobbins in rotation vfrom th'ree stacks,

. Figsp7, 8, 9 and 10 are diagrammatic views showing-the modified form of control wherein the mechanism is Figs. 1.1;and 12 are enlarged detailed vertical sections on lines 1| l.|l and. l2lZ,-respectively, of Fig. 1.1, .the partsuinFig. 11 beingin; the posi} tion shown in Fig; 3,

Fig. 13 is a diagrammatic view showing the connections between two shuttleboxes and; the stack selector u sed in the preferred form of thje invention, p s

Fig. 14 is similar to 13 but showingthe connections betweenthree shuttle boxes andthe stack} selector as used in themodified form of the invention, and i i f Fig. 15 is a detail view of the'lever usedin the connections of loom. Referringparticularly to Fig. 1, the 100m frame Ill supportsa multi-stack magazine M havingj fouristacks of bobbins .H, I 2, l3 and provided with vertically reciprocating bobbin releasers l5;

set to .draw bobbins from two the modified form'of the may j 'om'the rear of the 1mm, respectively. Each releaser o der The selector shaft has secured to the rear end thereof a collar provided with a groove 3| which receives the upper end of a positioning lever 32 pivoted at 33 to the magazine frame. A

spring 34 connected to lever 32 and having its upper end anchored as at 35 with respect to the magazine frame tends normally to move lever 32 in a clockwise direction to move the selector 24 forwardly, or to the right, see Fig. 1.

The selector 24 includes in its construction a web 48 cooperating with an actuating lever 4| connected to the upper end of a vertically movable rod 42. The lower end of the latter is connected to a floating lever 43 pivoted intermediate its ends on a block 44 carried by the upper end of a vertically reciprocable rod 45.

The upper part of the magazine frame has front and back bearings 48 and 41, respectively, in which rocks a shaft 48 the front end of which has secured thereto an arm 49 connected to a depending rod 58 attached to a transfer latch or dog 5|. The latteris normally below a hunter 52 on' the lay L and is connected to a transferrer arm 53- pivoted as at 54 on the stand 55. of the magazine. Shaft 48 has secured thereto a sec- 0nd arm connected by rod 6| to a shuttle position detector designated generally at 62 and pivoted as at 63 on a fixed partof the magazine. A depending arm 64 of the shuttle position detector carries the usual head not shown normally in forward position but movable rearwardly at the time of a transfer to determine whether the shuttle is properly boxed to receive a reserve bobbin. Shaft 48 has secured thereto a casting having a shelf or bar for cooperation with dogs 12 on the upper ends of the bobbin releasers l5 to l8.

The matter thus far described is of common construction in multi-stack weft replenishing mechanisms and operates in the usual manner. The bobbin releasers are normally down and bar II is raised to the full line position shown in 1 Fig. 2 and the cradles are empty, The rod 45 moves downwardly when the lay is on front center and a shuttle is in shuttle box B at the magazine end of the lay L. If 'at this time the detector D indicates weft sufficiency a pin 66 connected to the detector is moved to non-controlling position with respect to lever 43 and the latter has an idle motion, permitting rod 42 to remain unmoved so that the selector 24 is not given a rocking movement. If, however, the detector indicates exhaustion of weft in the box B, the pin 66 remains in. its normal position to interrupt downward movement of the floating lever 43 and the latter thereupon depresses rod 42 to cause rocking of the selector 24 in a clockwise direction as viewed in Fig. 2 to raise its fingers 22 and 23. The bobbin releaser registered with the selector is thereupon raised and its dog I2 moves outwardly under-action of spring 15 on the releaserto overhang the bar 1|, see' full lines, Fig. 2. Replenishment of the depleted shuttle is thus initiated and the shuttle is picked to the opposite end of the 100m.

When the shuttle returns rod 45 is given an upward movement, this movement occurring regularly at two-pick intervals and coming at that part of the loom cycle at or about the time the box shift at the opposite end is completed. Lever 43 is thereupon raised to lift rod 42 and cause a reverse rocking of the selector 24 to depress its fingers. The previously raised bobbin releaser is thus depressed, moving down to its normal position to rock the associated cradle for bobbin delivery. At the same time the associated dog 12 rocks the bar H to the dotted line position shown in Fig. 2, raising rod 8| to move the shuttle position detector 62 rearwardly, and lowering rod 58 to lift the transferrer latch or dog 5| into the path of the lay carried bunter 52. As the lay approaches front center position the transferrer arm 53 is depressed to move the released bobbin under it into the shuttle in'box B. During the latter part of the forward movement of the lay which effects transfer the shuttle position detector 52 is rocked in the counter-clockwise direction as viewed in Fig. 1 to exert a downward pull on rod 6| to restore the top shaft 48 to.its normal position, The magazine is thus reset and is ready for another transfer operation.

The two extreme angular positions of the shelf 10 shown in Fig. 2 are determined by a yielding lock mechanism of well-known construction designated generally at K. This lock includes an arm 11 secured to shaft 48, a second arm 18 movable about a fixed pivot 78, and a spring operating on a block 88. In the usual construction arm 1.? is close to the front bearing 46 of shaft .48, but in the present instance and for reasons'wh'ich will appear hereinafter I prefer to secure thearm 11 to shaft 48 a slight distance in front of the bearing 46.

1 Except as noted'the matter thus far may be substantiall similar to that shown in prior Patents Nos. 1,030,748 and1,633,648.

viewed in Fig. 1.

In carrying my present invention into effect I provide each dog 12 with an upwardly extending hook or pawl 8| which is controlled by the associated spring 15. A stand 82 is secured to theupper part of the magazine frame and has front and back bearings 83 and 84, respectively.

A shaft 85 is rotatably mounted in these bearings and has a collar 86 secured to the rear end thereof behind bearing 84' to limit motion of the shaft to the right as viewed in Fig. 1, and also has a crank arm 81 secured to the front end thereof in front of bearing 83 which limits rearward movement of the shaft, or movement to the left as The longitudinal position of the shaft is therefore determined and does not change during shaft rotation.

Shaft 85 carries three ratchet Wheels 90, 9| and 92, respectively, each having a hub 93 provided with a set screw 94 to secure the associated ratchet to the shaft. Each ratchet preferably has six teethand is positioned for cooperation with the corresponding pawl 8|. 'The crank arm 8'! has a set screw 95 which permits the crank arm to be set with respect to the shaft 85 in two selected positions relatively to the teeth of the ratchet wheels 90, 9| and 92 for purposes which will appear hereinafter. Crank 8! also carries a pin 96 which cooperates with have "similar bobbinsirto replenish zone ishuttle',

each :ofrthe three ratch'et wheels will \be inaligne surfaces I03, I04 and I05 corresponding to stacks II, =I2 and '13. respectively. Rod I00, asviewed iniFig. 1, extends down from pinBBJbehind shaft 48 land between 'frontrbearinglfi and :lock I arm T'Isecuredtoshaft 48. I

In order to hold the I shaft yieldingly in any of "itsz'six positions I provide a yielding: lock II5 showniniFig. -12and comprising a wheel I I6 securedto shaftBS atuI I and havingcsixnotches M8 to receive a, spring lock :IEIB vsecured as at I'Ft0ithe :pIatexIllZ. The-locking {device vH5 tionwto which they .aretmoved by the zpawlsz8I, butyields to permitthe shaft "to move :from one position to the next position thereof. I

When the preferred form of the finventionds to bemused theloom .willhave a gangIGZ .ofl shuttle I boxes at the left end thereof, shown in. Fig.;13. This gang :has :upper "and lower boxes I and I26, respectively, for shuttles :SA and SB, respectively. :By well-known mechanism the I gang G2tis shifted'so that either of the'rshuttle boxes I can be in active picking position "with respect toatherra'cegplateI2'1con lay L. Alconnector 130 extends from gan-gGZ around guide sheaves I 3 I and upwardly 'tothe rear arm I32 sof lever 32. The ratio between the :two arms *of lever 32 is such that whenxthe gang-G2 shifts upwardly from .the tlpositionf'shown incFig. :13 to :place shuttle box I26 in active position, therselector 124 will be moved fromits extreme front-to itslex- I treme rear position, thatzis, from registry =with releaser 15 to registry with -releaser 'IBQ Thus, it will: be "seen that f in the preferred :form ofthe invention 171161100111 operates with two shuttles,

one of which .SAis provided with a weft which I is consumed more rapidly in the weaving yoper- I ation than theweftrof shuttleSB. I

"In the operation of theipreferre'd :form of the invention the magazine will .be set'toadeliver bobbins of the same kind from'stacks II I, I2; and I3,

The pattern being 'vvoven willzbe s i 1ch fthat shuttle 83 will be active at comparatively'frequent -:in-

tervals, and shuttlersAtwill not :be continuously active for a vlong enough period ;to consume ta full bobbin. The selector :24 willwtherefore be moved to its rear position by shifting gang (flat least as I often was replenishment- 0f vshuttle :SA is neededn'and preferably more often. v

*When shuttle SA "is depleted, idetector 1D will cause the selector 1J0 truck in a counter-clockwise direction .as viewed in Fig. 2 :to raise whichever inFig. 2 and duringthe latterpartzof its upward motion dog 12 willbe-moved-overabar IIby spring '75:and at the same timegpawlcaI will :be'moved to operativeposition over adjacent teeth or ratchet wheel +90; .TheI'shuttle SA iSlthl'lIPi-CkGd I to the opposite @side' of, the doom -and=after =time has been allowedifora'shift-of thezga'ng G2, but I I assuming tthat ino shift "will :occur at this point of the operation, .selectorzr24kis :rockedlin a :clockwise':;direction as :viewed xinrFig. l '2' to depress the previouslyiraisedireleaser =15. I I

' Duringadescent ofrlreleaser IS dog 12 will 'rock shaftilll: in arclock wise :direction asviewed in Fig. 2zimusual manner toxset the magazine for transv fer zas ialready tdescribed; and paw] ill "will :move

dowlfiafrom the fullline ,positionrin Fig. 12 :above one ofa the teeth :of ratchet wheel .90 :to the xfull line :position shown in 3, where it engages:

the aforesaidrrrathet tooth. I Further :descent =.of

the releaser I15 will mq v e thepawl 8 I xtothe dotted line position :shown in .Fig. I 3, Jthereby giving the shaft a 11 /6th:rotation,ibutzattthistime I lug I of dog12 willlengage:shoulder:I4'I of the magazine frame .to -rocl the=pawlr8I I and dog ;I2 in a :counter-clockwise direction, see ."Fig; 2, 1 thereby resetting:the-:dog and movingjthe pawlxIlI away from the? ratchetiflfl backzto the-normal dotted linepo- I sition ashown :lin Fig; 3-2 as rreleaser I5 completes itscdowmmotion. 1 I

I mm F8! is setaso that during'the six angular steps needed :to complete :a rotation of vshaft '85 thetgpin .95 will beiat (threedifierent distances fromishaft .25. It'maybe assumedfor instance I that rat the z-beginn'in'g of the I operation 'J'ust described zarmrfl'l .isin-the dottedline position shown in Fig. 5.so that thez stop headrIOZis-in high positioniwith I the surface v ma in alignment with the selector :to register :the .latter with the front re- I leaserwlfi. The /3th rotation mentioned turns the :shaft :in 2a counter-clockwise direction to theifullnlinezpositiomshown iniFig. 5 which leaves the;pin 1&5 atsitsgprevious distance from. the shaft I 25,:and the I selector "remains registered with stack d'l. I

When shuttle SA is again depleted releaser I5 will again :be raised to draw a second bobbin I from front stack II,1but thistime asr'eleaserli descends itscpawl 0| will rock shaft 05 and cause arm; :83! to move to the full line position shown .in:Fig.- '4*which places 'pin 96nearer shaft25 and :canctherefore apermit the stop'head I02 to fall.

: :Whemselector 2'4 again moves rearwardlyinci ldentwto activityIofshuttleSB, thestop I02 will fall and theltop ofislot IOIsand pin 96 wil1co1- loperatec to :placewsurface I 04 in thepath of the While thelsecondftypeoflweft lessrfrequenflyrused selector and Iregisterthe latter withreleaser I6.

or consumed atza slower .rate lwillabeiinrstack M.

I .tortto register-theilatter with releaser I1. Durling the fourth replenishment of shuttle :SA a bobbin *will :be drawn from the third stack I3,

line position shown .in Fig. ;6 where pin'96 is at 11tsprevious{distance from shaft 25 and the stop surface I05 will remain in controlling position with respect :to ithe selector :to 5 keep :the latter .rregistered with thezthirdcreleaser I1. I Qn-the fiith replenishmentof shuttle SA arm I r81 willxmove toithe-dottedlinezposition shown in :FignAato lift the-.stoptheadzso thatits surface I04 iwillzregister the iselector=with releaser I6. On

470 the :last or sixth replenishment of shuttle SA in I the 'cycle carm 'fl will "be moved 'back to the (dotted position shown in Fig.6 the effect of which :is"to1pl-ace =stopsurface 103 in the pathof the Kseleo'tor and again iregister the "latter with the :5 rfrontrreleaser I5.

Thus it is seen that for six transfers involving shuttle SA pin 96 is given six different positions at three different distances from shaft 25, thereby registering the selector twice with each of the stacks II, I2 and I3. Bobbins are therefore uniformly drawn from the front three stacks in a rotation which permits utilization of practically all the bobbins in these front stacks for replenishmentof shuttle SA. If shuttle SB should need 7 sumed more rapidly than the weft of either of the other two shuttles. Such a condition is frequently found in curtain fabrics where one decorative stripe predominates and is woven by one shuttle and where a less frequently used decorative weft is woven by another shuttle, while the round weft is laid by a third shuttle. Under these conditions it is desirable to replenish the more rapidly consumed weft from the front pair of-stacks II and I2 and replenish the other two shuttles from the rear stacks I3 and I4.

Fig; 14 diagrammatically shows a 100m of the type having three shuttles used in the modified form of the invention. A gang G3 ofshuttle boxes has top, intermediate and bottom shuttle boxes I58, I5I and I52, respectively, occupied by shuttles SC, SD and SE, respectively. Each shuttle becomes active when its corresponding shuttle box is in alignment with the race plate I2Ionthe1ayL.

- Since the gang G3 passes through two equal one step shifts when shifting to its three positi0ns,the connections to the "selector 24 must be modified to effect correct registry of the selector with the stacks corresponding to'the shuttles as they become active. isactive the selector can be registeredleither with releaser ['5 or I6, but'when shuttle 'SD is active the selector must register with releaser I1. The shift of theishuttle box up .one space from the full line position shown in Fig. 14 to place shuttle SD in action therefore requires a two stack shift When shuttle SC aeoacae Rod I60 has'three longitudinal positions depend-' ing upon the position of gang G3, and moves the of the selector from registry with the front releaser I5 to registry with the third releaser IT. The second one space shift or gang G3to 'place shuttle SE in action would produce-a second two-stack, shiftof the selector to a position behind releaser I8 if the ordinary type of connection were used between the shuttle boxes and the selector. In this latter box shift it is desirable to give the selector a one-stack shift so that it :can' register with releaser I8.

In; order to accomplish the desired result I introduce a lever I55, see Figs. 14and 15, in the connection between the gang G3 and the selector so constructed that equal angular movements thereof derived from the gang G3 will produce an amount of shift in the selector when gang G3 has its first rising movement equal to twice the shift of the selector when gang G3 has its second upward movement.

from the front of the loom. Lever I is pivoted at I56 to a stand I51 on theloom arch I58 and This lever is indicated in Fig. 15 which is a view from the rear of the loom, whereas the same lever is shown in Fig. 14 as seen shaft 85.

arm I-59 to the positions shown in full lines, heavy dotted lines and light dottedlines in Figs. 14 and 15.

line position to the light dotted line positionin Fig. 15 the rod I66 has a further movement to the right, which, however, corresponds to a one stack shift only of the selector. When arm I65 is vertical as shown in full lines in Fig. 15, arm I59 will diverge from a vertical line at an angle of "41, 24'. It is found that this is the correct angle for producing the desired movements of rod I6I, although an angle of 40 will give sufficiently close results.

When shuttle box I58 is in active position the selector will be able to register either with releaser I5 or I6, and when shuttle box- I5I is active the selector is moved to register with releaser I'I, while movement of shuttle box I52 to active position effects registry of the selector with releaser I8.

In the modified form of the invention ratchet wheel 92 is moved out of register with the pawl 8I of releaser I! to some such position as that indicated in dotted lines in Fig. 1. Vertical re ciprocation of the releaser II will therefore be inoperative to cause angular movement of the The ratchets 98 and 9|, however, are maintained in registry with their respective hooks 8I'. Crank arm 81 is also changed with respect to shaft 85, being moved through an angle of 30 from the IPOSltiOnOCCllIPlCd by it in the preferred form of the invention, and a second "form of stop S2, shown moreiparticularly in Figs. '7 to 10, replaces stop S3. When thus altered the loom will replenish shuttle SC from either of the stacks II or I2, replenish shuttle SD from stack I9, and replenish shuttle SE from stack I I,

as will be apparent from the following description.

' The change in the setting of arm 81 results in placing [pin 96 at four different distances from shaft 25 during a six step cycle of shaft 85 corresponding to one complete rotation of it. In "Fig. '7 pin 96 is shown at its lowest position where it is nearest shaft 25 and the upper part of surface I I2 on head III! of stop S2 will serve to stop the selector in register with releaser I6. When a replenishing operation of shuttle SC'occurs arm 85 will be movedto the dotted line position shown in Fig. 8, thus placing pin 96 at its second distance from shaft 25 and raising the head III) so that the lowerpart of surface II2 will keep the selector 24in register with releaser I6. At the next transfer involving shuttle SC arm 81 will move to place pin 96 at its third distance from shaft 25, see the dotted lines of Fig. 10, and the Lever I55 has a second upwardly extending Z'Jshown in full lines,

pin-96; can

toregister the; selector. 24 with releaser I55 of the: front stack: H. At the, next replenishment ofLshuttIeSC pin 96- will move to; itsifourth or greatest-distancefrom shaft 2.5, see Fig. 9, thus raising; the stop head lll'l so that thebottomof:

surfac Ill will keep selector 24 in registenwith pin 96 1s at its third and fourth distancesfrom shaft 25, surface lll:registers the: selector with h the frontreleaser l5, and when pin 96 .Sva t its nearest and second distancesfromshaft.25, stop convertingtwo equall movements ofthe gang G3 into unequal movements of which is twice theother;

the selector one of t Havingthusdescribedrmy. invention it will be i seen that changes and modifications may be made thereimbythose skilled in the art without departing fro n the spirit and scope of the invention and I do not wish tails hereinrdisclosed, butwhat-I: claim is:

1: H2 in position to register the surface M [will cause registry ofithe selecto-rwith theisecond releaser I6.

Shuttles SD andSE their stacks Hand M, respectively, without incan be replenished: from 1. In: a weft replenishing loom having agiven pluralnumber of stacks of reserve bobbins-each 'providedwith a: bobbin releaser actuated by a selector; movableinto registry with the releasers one at a time, theloomlhaving displacing means to move theselector, away from registry with said releasers and-alsoil avingreturn means to move the selectorbackv into registry, with one oranotherloflsaidreleasers, astopfor the selector. having as many steps as theretare stacks of reserve bobbins and capable-of assuming asmany dif ferentipositions with respect to the selector as there 2 are; stacks, each position corresponding to registry of the selectorwith:adifferent releaser, a crank rotatably mounted on. the :loom, means operative duringla succession ofweft replenishing operations of thevloom togive the crank succesterrupting the described sequence set forth in 1 Figs. '7 to 10, due to thefact that freleasers I1 and l8are unableto-lturnishaft 85. t

In the preferred formrof the invention free is relied uponator-moye quent shifting of gang G2: selector 24 rearwardly so thatthe. stopnsil may fall'intothe path of. the selector before the lattle SA. In themodified form activity of. either of. the selector to permit diiferentipositions. So far stopsstoi their new positions are concerned the gangsGl and G3 can be consideredasvdisplacingmeans which move the selector rearwardly tozpermit falling. of: the steps into correct: position. i l

stop 82* to *fall'to' its as movement of the ter returns forwardly incident to activityto-f shut- 55 shuttle SD or SE will cause rearwardmovement sive step by step angular movementstomove the crank to different vworking positions, and connece tions between thercrank-uandthe stop cooperating with-said displacingiand return means to effect movementofuthe stop to the different positions thereoftas the cranlnrotates and moves to the different working positions theroflthereby causing thestop toeffectregister ofthe dilferentjreleasers inrotation. 2. In a weft replenishing loom. having three stacks of reserve 'b'obbins each provided with a From the foregoing it: will be seentthatlI. have provided simple means by which" down: motion of the releasers turns a shaft, which locates a stop in; different positions in the; path: of the selector. It will also be seenthat the arm.8'l can be fixedzto tancesfromjvgshaft 25 when three stacks of. the magazinereplenishl the same kind of weft, or assume positions at four different distances from shaft 25 when two stacks supply the same kind four positions corresponding to registry, of theselector with the front stack; H and the other two corresponding} to registry with the second stack l2. It will further be seen that.v the rods forming parts of the stops S2; and Sipassdownwardly between the bearing and stoparm 11, thereby permitting the use of a rod which has only a sligh amount of offsetin order to clear the parts between crank arm 81 and the selector. Itwill also be seen that when it is decidedlto usethemagazine in the more usual settingswherein it supplies bobbins of .four different types, all of the to inoperative position on shaft 85 so that descent of the: pawls 8| will not change the positionof the stopfand the latter canbe heldin its highest position to register the. slector with; the front stack, thereby permitting registry of the selector.

with any of the other three stacks. Furthermore, lever l 55 provides a convenient I means for the shaft.85 inrtwo' different positions Withrespect to the ratchet: wheels,vsothat; the assume positions at three differentdistratchets can be moved bobbinereleaser actuated by a selector movable into registrywith thereleas'ers one at a time, the loom having displacing means. to move the selector ,away nom, registry with the; releasers andalso having return means to move the selector. baclain tc'iv registry. with -one or another of said rel easers, a stop for the selector having three steps anclvcapable. oflassuming three diflocate the steps one at a time ferent positionsto inst'opping position with respect to the selector toeflect registry of the latter with the different releasers, a crank: rotatable .on the loom, and means operative during asuccession of ing operations of the loom to give the crank successive partial rotations andcause the crank in cooperation with said displacing and return means'to effect movement'of'thestop to the three different; positions thereofwith respect to the selector, thereby causing said selector to register with thefreleasers in rotation.

i 3. Ina weft replenishing loom. having two stacks of reserve bobbins each provided with a bobbin releaser actuatedby a selector movable intoregist'ry with thereleasers one at a time, the loom having displacingmeans'to move the selector. away from registry with the releasers and also having return means to back into regist'rywi'th one or releasers; a stop for the selector move the selector the other-of said having two steps andmovable'to locate the steps one at a time i in stopping position with respect to theselector toeffectregistryrfof the latter, with one or the other ofsaidreleasers, a crank rotatable on the loom, and means operative during a succession of replenishing operations of the loom to give the crank successive partial rotations and cause the crank in' cooperation with. said'displacing and return means to effect movements of the stop to to-be, limited to the de selector with the replenish? plural number of locate the steps, one at a time, in stopping position with respect to the selector.

4. In a weft replenishing loom having a given stacks of reserve bobbins each provided with a bobbin releaser actuated by a selector movable into registry with said releasers one at a time, the loom having displacing means to move the selector away from registry with said releasers and also having return means to move the selector back into registry with one or another of said releasers, a stop for the selector having as many steps as there are stacks of bobbins and capable of assuming as many positions with respect to the selector as there are stacks, each position corresponding to registry of the selector with a different releaser, a crank rotatably mounted on the loom, means operated by the releasers as the latter are operated in succession by the selector to move the crank to different working positions, and connections between the crank and the stop cooperating with. said displacing and return means to effect movement of the stop to the different positions thereof as the. crank rotates, thereby causing the stop to register the selector with the different releasers in rotation.

5. In a weft replenishing loom having a given plural number of stacks of similar reserve bobbins each provided with a bobbin releaser actuated by a selector movable into registry with said releasers one at a time, the loom having displacing means to move the selector away from registry with said releasers and also having return means to move the selector back into registry with one or another of said releasers, a stop having a number of steps equal to said given plural number of stacks and capable of assuming a number of positions equal to said given plural nurnber of stacks, each position corresponding to registry of the selector with a different releaser, a crank rotatably mounted on the loom, means operated by the releasers as the latter are actuated in rotation by the selectorto move the crank to a number of different working positions which is a multiple of said given number of stacks of similar reserve bobbins, and connections betweenthe crank and the stop cooperating with said displacing and return means and operative during a rotation of said crank to effect movement of the stop to such positions as will cause the selector to register with said releasers. I p

6. In a weft replenishing loom having three stacks of reserve bobbins each provided with a bobbin releaser actuated by a selector movable into register with the releasers one at a time, the loom having displacing means to move the selector away from registry with said releasers and also having return means to move the selector back into register with one or another of said releasers, a stepped stop for the selector capable of assuming three positions each corresponding to registry of the selector with a different releaser, a shaft rotatable on the loom, a crank on said shaft operatively connected to said stop, and means operated by said releasers when the latter are actuated by said selector one by one to give the shaft successive partial rotations and cause the crank in cooperation with said displacing and return means to effect movement or said stop to the different positions thereof.

7. In a weft replenishing loomhavin three stacks of reserve bobbins each provided with a bobbin releaser actuated by a selector movable into register with the releasers one at a time, the loom having displacing means to move the sefor the selector ascacze lector away from registry with said releasers and also having return means to move the selector back into register with one or another of 'saidreleasers, a stepped stop for the selector capable of. assuming three positions each corresponding to registry a shaft rotatably mounted on the loom, three ratchets on said shaft, one ratchet for each releaser, a crank on said shaft operatively connected to said stop, the releasers when actuated in succession by the selector cooperating with their respective ratchets to turn the shaft step by step, said crank during operating with said displacing and return means and operative due to the different angular positions thereof to move said stop to the different positions thereof.

'8. In a weft replenishing loom having three stacks of reserve bobbins each provided with'a bobbin releaser actuated by a selector movable into register with the releasers one at a time, the loom having displacing means to move the selector away from registry with said releasers and also having return means to move the selector back into register with one or another of said releasers, a stepped stop for the selector capable of assumingthree positions each corresponding 'to registry of the selector with a different releaser, a shaft rotatably mounted on the loom, ratchets secured to said shaft, one ratchet for each of said releasers, a pawl on each releaser to cooperate with the correspondingratchet, a crank secured to said shaft, said releasers when actuated in succession by said selector acting through their respective pawls and the corresponding,

ratchets to give said shaft successive angular movements, and the crank operatively connected to the stop and cooperating with said displacing and return means and operative due to the angular position thereof to effect movement of said stop to the different positions thereof.

9. In a weft replenishing loom having three stacks of reserve bobbins each provided with a bobbin releaser actuated by a selector movable into register with thereleasers one at a time, the loom having displacing means to move the selector away from registry with said releasers and also having return means to move the sclector back into register with one or another of said releasers, a stepped stop for the selector capable of assuming three positionseach corresponding to registry of the selector with-a different releaser, a shaft rotatably mounted on the loom, a crank secured to the shaft, means operated by the releasers as the latter are actuated in succession by the selector to move the crank to three working positions at different distances from the selector, and connections between the crank and the stop and cooperating with said displacing and return means to effect movement of the stop to the three different positions thereof as the crank moves to the three different working positions thereof. t

10. In a weft replenishing loom having two stacks of reserve bobbins each provided with a bobbin releaser operated by a selector movable into register with the releasers one at a, time, the loom having displacing means tomovethe selector away from registry with said releasers and also having return means to movethe selector back into register with one or the other of said releasers, a stop for the selectorhaving two stops and capable of assumin two positions each corresponding to registry, of the. selector with adifferent one of said releasers, a "crank of the selector with a different releaser,

the rotation of the shaft 00-,

three connected to said stop,

to effect movement of selector to move the return means to rotatably mounted on the loom and operatively and means operated by each releaser when actuated by the selector to rotation, thecrank when give the shaft 2. partial having successive partial. rotations active in cooperation with said displacing and return means positions thereof and cause the selector to register with said releasers.

11. In a weft replenishing loom having two said stop to the different stacks of reserve bobbins each provided with a bobbin releaser actuated by a selector movable into register with the releasers one at a time, the loom having displacing means. to move the selector away from registry with said releasers and also having return back into register means to move the selector with one or the other of said releasers, a two stepped stop for the selector capable of assuming. two positions each corresponding to registry of the selector with a different one of said releasers, a crank rotatably mounted on the loom, means operated by the releasers as the latter are actuated in succession by the crank to two working ranges of movement at different distances from the selector, and connections between the crank and the stop cooperating with the displacing and effect movement of one step of the stop into position to cause the selector to register with crank is in one of said ranges of movement and effect movement of the other step of the stop into position to cause the selector to register with the other releaser when the crank is in the other range of movement thereof.

. 12. In a weft replenishing loom having two stacks'of reserve bobbins each provided with a bobbin releaser actuated by, a selector movable into register with the releasers one at a time, the loom having displacing meansto move the selector away from registry with either of said releasers and having also return means to move the selector back into register with one or the other of said releasers, a stop for the selector having two steps and capable of assuming four different positions with respect to the selector, two of said positions corresponding to location of one step in stopping position relatively to the one of the releasers when the placing and return have the second one-space ing to said other two selector and the other two positions corresponding to location of the other step in stopping positionrelatively to the selector, a crank rotatably mounted on the loom, means operated by the releasers as the latter are actuated successively by the selector to move the crank to four different working positions at four different distances from workin positions corresponding to said two positions and the other two positions correspondpositions, the crank durcooperating with said dismeans to efiect movement of the stop to said first two positions thereof and thereafter efiect movement of the stop to the other two positions thereof.

13. In a loom having three shuttle boxes which shift through two equal one-space shifts and having a bobbin releaser selector movable ing a rotation thereof through three equal one-space shifts, and conconnected to the shuttle boxes and a second arm angularly disposed with respect to the first arm and operatively connected to said selector, said lever operative due to the angular relation of said arms to efiect a. movement of the selector through two of said three space shifts thereof when the shuttle boxes have the first of the twospace shifts thereof and said lever efiecting movement of theselector through the third of the three shifts thereof when the shuttle boxes shift thereof.

14. In a Weft replenishing loom having shiftingshuttle boxes and a selector movable into register with four bobbin releasers, one at a time, a part moving in timed relation with the shuttleboxes and a, second part connected to said selector, and a lever having an arm connected to one of said parts and a second arm connected to the other of said parts, said arms being so related that two successive equal movements in the same direction of the arm connected to the first named part will cause two successive movements of said otherpart one movement of which is twice as large as the other movement thereof.

, WALTER H. WAKEFIELD.

the selector, two of said

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