US1794024A - Bobbin-changing mechanism - Google Patents

Description

Feb. 24, 1931. J. LUCAS BOBBIN CHANGING MECHANISM Filed Nov. 21, 4 Sheets-Sheet l [N VENTOR J 01W] Tl/A'A/ L was WITNEEE Feb. 24, 1931.

J. LUCAS BOBBIN CHANGING MECHANISM 4 Sheets-Sheet 2 Filed Nov.

WITNESS MMMM /I 1/ T OAHVE VS Feb.'24, 1931. J. LUCAS BOBBIN CHANGING MECHANISM Filed Nov. 21, I928 4 sheets-sheet a INVENTOR WITNESS %762WWW Wm w GR um ,LT NA m L MM J Feb. 24, 1931. J. LUCAS BOBBIN CHANGING MECHANISM Filed Nov. 21, 1928 4 Sheets-Sheet 4 I I i I I I I I I I I I I 1 I I I I I I I I I L a; I i I I I I I I INVEI VTOR A TTORNE YS Q i; I WITNESS Patented Feb. 24, 1931 PATENT OFFICE UNITEDSTATES JON THAN Lucas, onsAvANnAn, GEORGIA, assrenon T LUCAS-LAMBORN Loom conrona'rron or NEW YORK, n. Y.,' A CORPORATION or NEW YORK solemn-CHANGIN MECHA NISM Application filed November 21,1928. Serial No. 320,975.

, My invention relates to looms and more particularly to mechanism for periodically and automatically changingIt-he bobbin with its holderat predetermined intervals during the operation of the loom in a positive and uniform manner free from shocks and impacts, the objects and advantages of which will appear more, fully hereinafter. [In the accompanying drawings which illustrateby wayiofi example a form of my invention without defining itslimits, Fig. 1 is a-front'elevationofmy apparatus; Fig. 2 is a vertical section taken along the line 22 of Fig.1; Figs. 3 tolO illustrate the bobbin transfer orchanging mechanism inpvarious progressive positions; Fig. llis a'plan view of the shuttlejand supporting arms, and Fig. 12 is a vertical section online 12 -12 of r u t Y i 1 My present invention may in general be employedwith' any type of positive shuttle transfer mechanism such as that disclosed in United States Patent No. 1,624,108 issued to me April 12,1927, or with that, shown in i the copendinggjoint application of Arthur Gase ,anclmyself, Serial No. 287,518, filed June 22,1928, Certain parts oi the shuttle transfer] mechanism disclosed in my above patent and application are shown; on, the acco npanying drawings for the sake ,of a

clearer understanding ofmy invention and as shown include {two oppositely reciprocating carriers 15 slidabl-y mounted uponguides 16 fired upon the frame 17 of the loom. The carriers 15 are provided with forwardly e V tending arms 18 (Fig, 311) for alternately supporting the shuttle in the manner disclosed in the aboi 'conentioned patent andapplication i Thocarriers may he re ciprocatcd upon their guides in any suitable way and as shown the right hand carrier maybe operated from a srenkw (B sl) xe to h t 1 through linlr20,,oscillating lev and conneetin qdes, which; is pivate to a lug 22 depending from the carrier 15. Upon con} tiniious tation of the cr'ank lEl the carrier is reciprocated backhand forth between the side my centefrof the machine, Fig. 1 showing in dotted lii esthefinneiyliinit of travel of the carrier. wince understood that a second or left-hand carrier 15, similar to therighthandcarrier, is located upon the other side of the machine and is operated in a similar manner by a crank (not shown), which actuates an oscillating lever 21 connected to the second carrier, so as to move the same toward and away from the center of the machine in synchronism with the righthand carrier, the transfer of the shuttle from one carrierto the other taking place automatically at theicenter of the machine where said carriers meet, as described in the patent and application referred to.

Mounted upon the carrier 15 is a shuttle 23 which is provided with guideways 24 within which the arms 18 of the carrier 15 alternately engage so as alternately to support the shuttle in its travel across the loom. It will be sufiicicnt for the purposes of the present disclosure to state that as the carrier 15 approaches the center of the machine the shuttleis released from the arinupon which it is supported and becomes latched to and supported by the other arm which then carries it to the other side of the machine while the first arm returns idly to its side of the machine. When the arms again approach the center of the loom the shuttle is re-transferredfrom the second to the first arm and in this manner the shuttle is positively carried back and forth through the shed of the loom.

lVhen weavingcloth which isto contain filler or; weft threads of diiicrent colors or of difierentfqualities it bccomesuiecessary to change the bobbin Awhich isfcontainerl in thcshuttlc atcertain predetermined instants;

I accomplish this, change bymcaus of aspecially constructed slu ttlc which is employed inassociationj with novel mechanism for removing the portion of the shuttle within which the bobbin is mounted, which portion I shall hereinafterrefer to as the bobbin box, and simultaneouslysubstituting for such box a similar box containing a bobbin havingthreads of different colors or qualities ,from saidfirst mentioned bobbin. M

Themechanism about to be described is one of numerous forms which my invention may" take, and has been designed to replace periodically and in rotation one of two rej displace the second inturn upon return the shuttle.

movable bobbin-holding boxes with the other at every two picks of the machine, one of the boxes being carried bythe shuttle as it passes through the shed of the loom and replaced by thaton the platform and is itself automatically positioned on the platform t? 7 Referring to Fig. 11, the shuttle 23 as shown includes a frame 24 provided with a cutaway 25,within which is adapted to fit a bobbin box 26 which is preferably of recf tangular form and open at the top. This cutaway is open both'at the top and bottom and also along the front side. The bobbin box 26 is provided with notches oropenings 27 which are adapted to receive spring press'ed latches 28 mounted upon the frame of the shuttle. These latches serve to hold the box in position upon the shuttle frame during the reciprocation of the shuttle across the loom.

The transfer mechanism, which operates to replace the bobbin box with a new box during the operation of the machine, includes a platform 29 hinged to two parallel arms 30, the other ends of said arms being pivoted upon a fixed portion of the frame of the loom.

. The platform is offset from the carrier'1 longitudinally of the loom and is located belowthe bobbin box when the shuttle has been moved toward the right-hand end of the machine as viewed in Fig. 1. The platform is adapted to be raised vertically and simultaneously moved't'oward the right of the machine by means of an arm 31 which is rigidly connected to one of the arms 'and is controlled by'means of a cam 32 engaged by a follower 33 fixed upon an oscillating lever 34 pivoted at 35 to a bracket 36 attached to the frame of the machine and connected by means of a link 37 to the arm 31. Upon rotation of the cam 32 thelever 34 will be actuated to oscillate the arm 31 and thereby alternately raise and} lower the platform 29;

' ,The' platform 29 is provided with anupstanding bracket 38 upon which is pivoted a spring pressedlatch39 (Fig. '2), thelatter ha'vingan extension 40 'whic'h is adapted to engage a cam41 fixed upon the frame of the machine. The nah, 391s adapted to engage within an opening 42 in the side of the bobbin box 26 so as'to 'holdthe same upon the platform. The platform 29, latch some cam .41

are so related that [as the 'platformis raised .upon oscillationj'of the arm 31, the extension 40 rides on cam 41 and the la tch 39is withdrawn from the opening 42 so as to release the bobbin box positionedoaths: platform prior to the replacement of the bobbin box posi-' tioned'within theshu'ttle, as-explaine .m -f fullyfbel'ow. p I j My novel bobbin box" changingviiichafiism I 1,794,-024 I I 5 includes also means for receiving and holding the replaced or idle box as it is ejected from the shuttle by the box which is positioned upon the platform 29. In the formof the invention illustrated, this receiving and holding means comprises a pair of hooks 44 (Fig. 3) which are adapted to enter the opena ing in the top of the bobbin box 26 and engage under flanges 46 as described hereinafter.

frame and at their other ends are pivotally connected to the plate 49as shown at 53. It

will be obvious from the construction so far 54 with link 55, as indicated at 58. The lever" 56 is rocked by means of a cam 58' which is engaged by'a follower 59 mounted upon the lever, the cam 58 being designedto produce the complex movement which is described below in connection with the operation of the mechanism. 1

The hooks 44, as shownin Fig. 3, pass through openings 59 in the plate 49 and are rabbetted at 60 so as to providea stop which engages the plate 49. The hooksare formed on the horizontal arms of a pair of bell-crank I levers which are pivoted at 47 the vertical arms 61 of which are engaged by springs .62 located in the housings 50st) asto urge the hooks'44 into the openings 59. Each of the arms 61 is connectedby means of'a link to a lever63pivotedintermediate its, ends upon the vertical plate 48 and terminating in acam portion 64. Fixed upon the frame of the machine is an upright 65 while mounted upon the platform 29 is a similar upright 66, both of which are ada tedv to be engaged by the' cams 64 as describedbelow;

The driving mechanism for the carriers and the bobbintransfer mecha ismincludes a pulley 67 (Fig.1) or otherdrivenwheel'i mounted onthe driven shaft 1 9; Aspur, gear .68 on the sl me; 19" e gages an idler 69 *j'oun nalle'd nponia support attached to the frame of the machine-and meshingin turn with a on the shaft Z1 whiehcarries l gear 72 and through the latter drives the gear 73 mounted upon the shaft 7 4 to which the cam 58' is fixed. .Thecrank 19 and cams32 and 58 are thus rotated in the same direction.

The left-hand carrier maybe operated in the-same manner as the right-hand carrier and drivenfrom the shaft 19 by means ofa bevel gear .75 fixed to theshaft 19 and engaging a bevel gear 7 6 on a transverse shaft 77;. This latter shaft :can be made to operate afshaft corresponding to the shaft 19. and

having a crank similar to the crank 19cmnected thereto, the link 20, lever 21and connecting rod 22 being similarlyduplicated.

The operation. of the transfer mechanism above described will be best nnderstoodaby reference to F igs. 3-to 10 of the drawings. Fig. 3 shows the shuttle 23 having the bobbin box B latched thereon (as shown in Fig. 12) approaching the right-hand end of the machine as viewed in Fig. 1. i The other box A is at this time positioned upon the platform 29 and held in proper position by the latch 39 shown in Fig. 2.. The cam 32 is so designedthat the lever 34- will be rocked to oscillate the arms in clockwise direction so as to raise the platform 29 beforethe box B in the shuttle 23hasreached aiposition in vertical alignment with the box A. i As the shuttle continueslitsmovement to the right, the'bobbin box A is raised vertically and at the same time movedhorizontally, the horizontal speed of the platform increasing until theboxes A and B are in exact vertical alignment, from which moment the horizontal 'speedof the platform 29 and the shuttle 23 is thesame. During its movement the extension iO (Fig. 2) rides over thecam 41 and releases the latch 39 from the shuttle 28. As the shuttle continues its movement there will then be only relative vertical movement between the shuttle and the platform. i As theboxA rises it willengage and pushthc box B out of the shuttle frame, the latches 28 i being cammed outwardly against the action of their springs. During this movement of the shuttle and platform, the parallel arms .51 connected to the plate 49 have been osciL lated bytherock lever 56 and cam58" in a clockwise directionso as to move the plate 49 vertically and horizontally. The cams 32 i and 58 are so formedthat the vertical move- 'ment of platform 29 is morerapid than-that I 46. After thepa'rtshave reached theposition shown in Figg'5 the verticalfspeedof the plate f 49becomeslgrater thanthat ofthe plat-form 529 so that the box B whlchisnow supported by thehooks 44 is moved away from the box Aasthe latter entersthecut-away section in "willbe change theshuttle frame and becomes latched therein, asshown in Fig. 6. t

Fig. 6 shows the position of the shuttle at approximately the extreme limit of its righthand movement and after the completion of the bobbin transfer. When this position has been reached or very shortlythereafter the carrier 15 is reversed through theoperation of the crank 19 and the shuttle. which now has the box A therein proceeds totravel toward the center of the machine as indicated bythe arrows in Fig. 7. Before this reverse movement has occurred, however, the arms 30 have continued their clockwise movenient until the position indicated in Fig. T

has been reached so as to provide a clearance between the shuttle and the platform.

At approximately the moment i that the right-halal end of the shuttle clears the lefthaud en d of the platform 2911s shown in Fig. i

of their cam 58 so as to lower the plate 49 and the box B supported bythe. hooks 44. When the partshavc reached the position shown in Fig. 8, the platform 29 is approximately at the position of restshown in Fig.

been more rapid than that ofplatform29 so that the former overtakes the latter as shown in Figs. 8 and 9. As the box B is lowered the earns 64- on levcrs63 engage the uprights I 65 and 66 respectively, causing the levers 63 to rock and raise the hooks 44 out of engagement with the flanges 46 as clearly shown in Fig. 9. The box B is thusreleased from the hooks and drops onto the platform 29 where it becomes latched by the latch 39. The platform 29travels further a; very short distance until it reaches its position of rest shown in Fig. 10, while the direction of oscillation of the arms 51 is again reversed, whereupon the :7

plate 49 is moved away from the platform 29 until thegidle position shown inIFig. 19 is reached. This Fig. 10 position isnnaintained during the time that the shuttle is. transferred'at the center o'i' themachinetroiuthr I j fg'hthand to the lerthand.carrier 15 on which itis carried to the left-hand end of the machine and then returned to. the center of the machine where it s retransferred to the right-hand carrier 15 and the above described cycle of bobbin box transfer operations is repeated said right hand carrier again approaches its righaimlliimit of movement. "Viith the above construction the bobbin at everytwo picltsof the ma- 1 i chine. It willlie obvious that by properly designing the cams and 58 or by inter posing suitable timing mechanism-in the drive of these canister driving them intermittently, the bobbins may be changed at a. The vertical downward movement of the .1 plate 49 (lllllllfl this reverse movement has every four, six orany higher even number of picks. Furthermore, a similar bobbin transfer mechanism maybe located at the leftside of the machine, in which caseaby suitablyforming and driving the cams, the bobbins fmay be changed at every pick or at any even or odd numbered pick.

It'willbe clear that with'the above mechanism the bobbins are changed in a uniform V is not subjected to sudden-shocks or strains;

'on the contrary, the engagement of one bob-'- binbox by the other is gradual and free of shock or impact, whereby the Wear and tear on the machine and the noise arematerially diminished.

VVhile I have shown my inventive idea embodied in a mechanism wherein the bobbin is housed within a bobbin box, which latter is the element that is directly transferred, it should be understood that thebobbins may fbe so designed as to be capable of being 7 directly transferredor replaced one by the other without the aidof a bobbin box.

Where in the claims I refer to positive shuttle-transfer mechanism'it is to be understood thatI refer to those types of shuttle transfer deviceswherein the movement of the shuttle through the shed and across the and definite in character, in contra-distinction to those shuttle tra'nsfer devices whereby the shuttle is thrown'or shot across the loom, the speed-and trajectoryof the shuttle in such cases not'being fixed or predictable. 7 .Variations from-the specific form of the invention shown and described may be resorted to Within thescope of the. appended claims without departing from the spirit of my invention. Forexample, my improved mechanism maybe employed as a Weft replenishin'gmechanism, :wherein a spent bobbin is replaced by a new, bobbin, there being providedany suitable form offeeler device. 45.Ic1aim':

1.,Ina'loom, the'combination with a positiveshuttle-transfer mechanism, of a shuttle having'a removable bobbin, means for operating said mechanism to transfer the shuttle across the shed of theloom,'and bobbin changand operating during the actuation of said shuttle-transfer mechanism by its operating 1 meansfor automatically-replacing the bobbin of said shuttle with another bobbin.

.2. In a loom, thecombinationwith-a posi tive shuttle-transfer mechanism, of'a shuttle having a removable jbobbin,means V for operacross theshed of the loom,- and bobbin i V the loom and'operative-during the actuation of said shuttle-transfer mechanism by its op and positive manner and that the machine loom is under control and'more or less fixeding mechanism located at onesi de of the loom I ating said mechanism to transfer the shuttle"- changing mechanism located-at one side, of

eratingmeans for automatically displacing the. bobbin of said shuttle vertically with another bobbin. v

3. In a loom, the combination with a positive shuttle-transfer mechanism, of a shuttle having a removable bobbin, means for operating said mechanism totransfer the shuttle across the shed ofthe loom,- and-bobbin changing mechanism located at one side of the loomand operative during the actuation-of Saidshuttle transfer mechanismby its operating means for automatically displacing the bobbin of said shuttle u-pwardlywith another bobbin.

4. In a loom, the combination with a positive shuttle-transfer mechanism, of'a shuttle having a removable bobbin, means for operating said mechanism totransfer the shuttle across the shed of-the loom, and a movable support for a second bobbin operative during the actuation. of said shuttle-transfer mechanism by its operating means for movingsaid second bobbintoward saidshuttle in a direction having components parallel to and at an angle to the direction of movement of saidshuttle, whereby said first bobbin is replaced by the second in a manner free from shock and impact. p r

- 5. In a loom, the combination with a positive shuttle-transfer mechanism, ofa shuttle having a removable bobbin, a movablesupport for a second bobbin operative duringthe movement of the shuttle for moving said second bobbin toward said shuttle in a direction having components parallel to and at an angle to the direction of movement-of said shuttle, whereby said first bobbin is replaced by the second in a manner freefrom shock and im-' act and mechanism for removin said first bobbin from the path of said shuttle.

6. In a loom, the combinationwith a positi've'shuttle-transfer mechanism, of a shuttle having a removable'bobbin, a movable support for a second bobbin operative during'the movement of the shuttle for moving said sec- .ond' bobbin toward'said shuttle in a direction having components parallel to and at an angle tothe direction of movement of said shuttle whereby said first bobbin is replaced by thesecond in a manner free from shock and'-impact,-';and mechanism for removing" said first box from thepath of said jshuttle,

itive. shuttle-transfer mechanism, ofa' shut e a ng a remo ab e bo b i d. bobbin changing mechanism located; at one'side of the loom andv operative during the movement of said. h tle f automatieall plac the bobbin ofsaid shuttle'withi anetherbob i ai chang g mechanism compris ng-"a bb n ad nc ng-de e. dap ed o hold a travel substantially the same speed as said shuttle in the direction of the latter and also a relative movementlat aniangleto said direction whereby gradual displacement of said first by said second bobbin is effected in i a manner free from shockmand impact, and

operating mechanismforactuating said recelving device to remove said first bobbin from the path ofmovement of said shuttle.

' 8. In a loom, the combination with a positive shuttle-transfer mechanism, of a shuttle having a removable bobbin, and bobbin changing mechanism located at one side of the loom and operative during the movement of said shuttle for automatically replacing the'bobbin of said shuttle with another bobbin; said changing mechanism comprising a platform adapted to hold a second bobbin thereon, operating mechanism for imparting to said platform fora portion of its travel substantially the same speed as said shuttle in the direction of movement of the latter and a relative movement at an angle to said direction to effect gradual displacementof the firstby the second bobbin in a manner free from shock and impact, bobbin receiving mechanism adapted to receive the displaced bobbin, and means for effecting the transfer of said displaced bobbin from said receiving mechanism to said platform, whereby upon a subsequent return of the shuttle said first bobbin will replacethe second in the body of the shuttle in the manner aforesaid.

:9. In a loom, the combination with a positive shuttle-transfer mechanism, of a shuttle having a removable bobbin, and bobbin changlng mechanism located at one side of the loom and operative during the movement of said shuttle for automatically replacing the bobbin of said shuttle with another bobbin; said changingmechanism comprising a platform adapted to hold a second bobbin thereon, means including a parallelogram linkage for imparting to said platform for a portion of its travel substantially the same speed as said shuttle in the direction of movement of thelatter and a relative movement at an angle to said direction to effect gradual displacement of the first by the second bobbin in a manner free from shock and impact, bobbin receiving mechanism adapted to receive the displaced bobbin, and means for effecting the transfer ofsaid displaced bobbin from said receiving mechanism to said thereon, means for imparting to said lat-a form for a portion of its travel substantlally the same speed as said shuttle in the direction'of movement of the latter and a relative movement at an angle to said direction to effect gradual displacement of the first by the second bobbin in a manner free from shock and impact, gripping mechanism located above the path of said shuttle and adapted to remove the displaced bobbin from the path of the shuttle, and means for effecting the transfer of said displaced bobbin from said gripping mechanism to said platform, whereby u on a subsequent return of the shuttle said rst bobbin will replace the thereon, operating mechanism including a parallelogram linkage for imparting to said platform for a portion of its travel substantially the same speed as saidshuttle in the direction of movement of the latter and a rela tive movement at an angle to said direction to effect gradual displacement of the first by the second bobbin in a manner free from shock and impact, gripping mechanism located above the path of said shuttle and adapted to remove the displaced bobbin from the pathof the shuttle, and operating mechanism including a parallelogram linkage connection for said gripping mechanism for moving the latter toward said platform, and means for releasing said gripping mechanism whereby said first bobbin is transferred to said platform, said platform being adapted to be returned to initial position whereby upon a subsequent return of the shuttle said firstbobbin will replace the second in the body of the shuttle in the manner aforesaid. 12. In a loom, the combination with a positive shuttle-transfermechanism, of a shuttle having a removable bobbin, and bobbin changing mechanism located at one side of the loom and operative during the movement tiallythe same speed as-said shuttle in the direction of movement of the latter and a relative movement at an angle'to said direction to effect gradual displacement of the first'by the second bobbin in a manner'free from shock and impact, gripping mechanism located above the path of said shuttle and adapted to remove the displaced bobbin from the path of the shuttle, operating mechanism including a parallelogram linkage connection for said gripping mechanism for moving the latter toward said platform, and means for releasing said gripping mechanism whereby said first bobbin is transferred to said platform, said platform being-adapted to be returned to initial position whereby upon a subsequent return of the shuttle said first bobbin will replace thcsecond'in the body of the shuttle in the manner aforesaid, said rel easing means including cam levers associated with said gripping mechanism and means for tripping said levers.

13. Ina loom, the-combination with apositive shuttle-transfer-mechanism, of a shuttle I having a removable bobbin, and bobbin changing mechanism located at one side of the 10cm and operative during-the movement 1 of said shuttle for automatically replacing the bobbin of-said shuttle with another bobbin; said" changing mechanism comprising'a platform adapted to hold a sec- 0nd bobbin thereon, a latching device on said] platform adapted to position rand-"hold the bobbin on the platform,

operating mechanism for imparting to said platform'for a portion of its travel substantially the same speedas said shuttle 1n the direction of movement of the latter and a rel- I ative movement at an angle to said-direction to effect gradual displacement of thefirst by the second bobbin in a manner free from shock and impact, releasing mechanism operative during such displacement torelease said second bobbin from said latching device,

bobbin're'ceiving mechanism adapted to re- 7 ceive the displaced bobbin, and means for-effecting the transfer of said displacedbobbin from said receiving mechanism tosaid plat- I j form, whereby upon a subsequent return of and means for'rele'as'ing said latching mechanism: prior to such replacement.

15. .The'method of changing the bobbin of a shuttle having a removable bobbin, which comprises so moving a second bobbinv adjacent the path of: the shuttle, while the latter is being transferred to lay the weft, as to -impart'to such se'cond bobbin substantially the same speed'asr-said'shuttle in the direction of movement of thela-tter during such transfer anda relative movementat an angle to said direction to effect gradual displacement of the firstby the second bobbinin a manner free from shock andimpact,

16. The method of changing the bobbin of a shuttle having a removable bobbin, which comprises so moving a second bobbin adjacent the pathof the shuttle, while the latter is being transferred to 'laythe weft, as to impart to suchisecond' bobbin substantially the same speed as said shuttle in the direction of movement of the latter during such transfer and a relative movement in a vertical direction to effect gradual displacement of the first by the second bobbin in a manner free from shock and impact. 1 V 7 17. The method of'changing the bobbin of a shuttle having a removable bobbin during movement of the shuttlewhich comprises so moving a second bobbin adjacent to the path of the shuttle, while the latter is being transferred to lay the weft, as to impart to said second bobbin substantially the same speed as said shuttle in the direction of movement of the latter during such'transfer and arelative movementat an angle to said direction to effect gradual displacement of'the first by the second bobbinina manner. free from shock and impact, and removing said first bobbin-from the pathof the shuttle.

I 18. The method of changing the bobbin of a shuttle having aremovable bobbin during movement of the shuttle, which'comprises so :moving asecond bobbin adjacent to the path of the shuttle as to impart'to said second bobbin substantially the samespeed as said shuttle in the direction of movement of the latter and a relative movement at an angle to said I direction to effect gradual displacement of thefirst by the s'econd bobbinin a manner free fromshock and impact, removing said -fiixst bobbin from the path of the shuttle and transferring the same to the initial position of said second bobbin, whereby upon a subsequent return of the shuttle the first bobbin is in position to replace the second in the body ofthe shuttle in the manner aforesaid.

19. In, a loom, the combination with a positive shuttle transfer mechanism, of a shuttle having a removable bobbin, and

means for operating said mechanism to transferthe shuttle across the shed of the loom, and bobbin changing mechanism operative during the actuation of said shuttle-transfer mechanism by its operating means for automatically replacing the bobbin of said shuttle with another bobbin.

-' JONATHAN nUoAs.

TOO

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