US2617602A - Strand winding machine - Google Patents

Description

Nov. 11, 1952 E. L. WHITBY 2,617,602

STRAND WINDING MACHINE Filed Sept. 2.1949 10 Sheets-Sheet 1 IN VEN TOR. Zyzma/l W/a'fy 4? BY a ATTORNEYS.

Nov. 11, 1952 E. L. WHlTBY 2,617,602

STRAND WINDING MACHINE Filed Sept. 2, 1949 10 Sheets-Sheet 2 NOV. 11, 1952 E, w rrB 2,617,602

STRAND WINDING MACHINE Filed Sept. 2. 1.949 1o Sheets-Sheet s Nov. 11; 1952 E. L. WHITBY 7,6

STRAND WINDING MACHINE Filed Sept. 2, 1949 10 Sheets-Sheet 4 INVENTOR. 5' ve/ yn Zynda// W/Ij/y ATTORNEYS.

Nov. 11, 1952 E, L, WHITQY. 2,617,602

STRAND WiNDING MACHINE Filed Sept. 2, 1949 10 Sheets-Sheet 6 WWII! A TTORNEYS.

Nov. 11, 1952 wH T 2,617,602

STRAND WINDING MACHINE l0 Sheets-Sheet 7 IN V EN TOR.

5.94 L'ynda/l W/zi/Qy /9.9 yfi 2% ATTORNEYS.

Nov. 11, 1952 E. L. WHITBY 2,617,602

STRAND WINbING MACHINE Filed Sept. 2. 1949 10 Sheets-Sheet s W /7//"?/A1@M; M 208 L Eve/ yzz Lynda/l Wk. i/y

ATTORNEYS.

NOV. 11, 1952 w n- 2,617,602

STRAND WINDING MACHINE ATTORNEYS.

Nov. 11, 1952 E. WHITBY 2,617,602

STRAND WINDING MACHINE Filed Sept. 2, 1949 10 SheetSev-Sheet 1o IN V EN TOR. g fivelqnyno o ll Wk iffiy ATTORNEYS.

Patented Nov. 11, 1952 STRAND WINDING MACHINE Evelyn Lyndall Whitby,

Woodstock, Ontario,

Canada, assignor, by mesne assignments, to Ram-Beau Products Company, a corporation of Massachusetts Application September 2, 1949, Serial No. 113,711

1'7 Claims. 1

This invention relates to a strand winding machine.

The general object of the invention is the provision of a winding machine so constructed as to be automatic in the operation thereof, thereby providing for a continuous automatic operation when the machine is started.

Another object of the invention is the provision of a winding machine for transferring a filled bobbin to a location distant from the position of winding the yarn thereon.

Another object of the invention is the provision of a winding machine having two alternative drives which will operate automatically to disengage one drive and to engage the other drive.

Another object of the invention is the provision of a detector unit for a full bobbin which will be positive in its action.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a plan view of a machine on a reduced scale embodying one form of the in- Vention;

Figure 2 is sectional view taken substantially along line 2-2 of Figure 1;

Figure 3 is an elevational view, partially in section, of a fragmental portion of the bobbin supporting centers and yarn traverse motion;

Figure 4 is a sectional view taken substantially axially through the driving center;

Figure 5 is a sectional view taken along line 5-5 of Figure 2;

Figure 6 is an elevational view of the mechanism for initially wrapping and securing the yarn on an empty core;

Figure 7 is a similar view but showing the parts in difierent relation to each other;

Figure 8 is a plan view of a detector and drive locking mechanism;

Figure 9 is sectional view of a detail of the detector mechanism;

Figure 10 is a sectional view taken along line Iill0 of Figure 1 looking in the direction of the arrows;

Figure 11 is a perspective view of a portion of the traverse mechanism showing the yarn guide portion thereof;

Figure 12 is an elevational view partially in section showing the mechanism for removing a filled bobbin from between the support therefor;

Figure 13 is a similar view on a reduced scale additionally showing the empty core supply and other associated parts;

Figure 14 is an elevational view partially in' section showing the drive locking device and associated parts; T

Figure 15 is a view of a detail of construction on an enlarged scale shown in Figure 14;

Figure 16 is an elevational view showing the cam for operating the lock and its relation to the lock operating lever;

Figure 17 is a sectional view taken along line ll-l1 of Figure 6; and

Figure 18 is a sectional view taken substantially along line l8-|8 of Figure 1. I

Briefly, the invention comprises a machine so constructed as to provide for continuous automatic operation while the machine is in motion; for winding yarn about a core of a type which is to be used as a supply package for yarn to be fabricated into a fabric as distinguished from yarn which is packaged for the purpose of transportation or storage to be later combined and re-wound in the final package form. Ac cordingly, means are provided for supporting and rotating a core to be filled. A detector mechanism or device is provided which operates upon the core being filled to set into motion mechanism to remove the filled core; position an empty core in place to have yarn wound thereon; sever the yarn from the filled core and again position the severed strands upon a fresh empty core. all this being accomplished automatically when the machine is in motion.

Referring to the drawings for a more detailed description of the invention, 20 designates generally a machine embodying one form of the invention which is so constructed as to be adapted for winding yarn or thread on braider carrier bobbins or the like 2|. The bobbin shown is of a usual construction and has a cylindrical core or body 22 provided at each end with a head 23 and 24. The head 24 has radially extending ratchet-like teeth 25 which in the present instance are engaged by the bobbin driving means of the machine to rotate the bobbin. The bobbin 2| has a usual central opening 26 extending therethrough and is mounted for rotation between centers designated generally 21 and 28 (see Figure 2), each of which is mounted in a manner so that it may be retracted when dofling.

The center2l is the driving center (see Figures 2 and 4) and comprises a spindle 29 which is provided adjacent one end thereof with oppositely disposed driving fingers 30. The fingers are spaced from the end of the spindle a short distance providing a pilot 3| to be projected into engagement with the wall of the opening 26 in the bobbin to support the same at one end thereof. The driving fingers 39 engage with the teeth of the bobbin to transmit rotation of the spindle to the bobbin. The spindle 29 is slidably received in a sleeve 32 which is of greater length than the bobbin 2! and has an enlarged head 33 which is provided with a diametrically extending recess734. The fingers 36 are slidably received within the recess and provide a driving connection between the sleeve and spindle. The sleeve 32. iSJOuZIldlBCl in bearings 36 which extend-upwardly from the base 31 of the machine and also has a longitudinal opening extending therethrough. The" other end of the sleeve 32 is closed by a threaded plug 38. A compression spring 39 is positioned between the inward end .of the spindle 29 and the-.plugy38 and. functions :to yieldinglyurge the spindle 29 to move it intoengagementwith the bobbin 2 l,.-.

The center 28. (see Figure 2) comprises a thimble-like member so having -a reduced body providing a shoulder 42. Thebody Mforms a pivot of a. size to be slidably-received the openingq26 at. the other end of the bobbin and withztheishoulder 42 engaging against the head 24. The thimble freely rotateson aspindle 43, and isr-attached'thereto by a split ring connection 44. The spindle 43 is slidably supported in spaced bearings and 4-6 which extend upwardly from the base 31. A collar 41 which has a recess 48 is-positionedonthe'spindlefl adjacent to and ini telescoping relation with the thimble. A col- 1ar 49 wwhich :has a recess .59 in-the outer wall thereof is adjustably secured to the spindle 43 at a: location thereon between the bearings 45 and 46:. Alcompression. spring 5| encircles the'rod withaone end thereof: abutting against. the bearing-146andthesother end thereof against the collan49 .soas -to:.yie1dingly urge thethimbleto be movedfinto rengagement.withthe bobbin. 2| in thermanner previously described The bearing l5--is extended 'as at 53 by means of a. sleeve 54 which is secured in-place by a screw 55.

The rotation of the-sleeve 32 and. the spindle 29--connected thereto is accomplished in the instant applicationby means of a frictionwheel 56 (see Figure 1) which is carried by the sleeve 32 and :which -is-engaged by afriction drive wheel '51. The periphery of the wheel 51 may have a covering. 58- of any suitable material such as leather so as to :insure proper frictional contact with? wheelv56. The friction drive, wheel 51 is carried on. a shaft '59, one end of which is journaled-in abearing support 66 which extends upwardlyfromathe base 31. The otherend of the shaft-59h journaled in abearing 6| (see Figures 13 and 14) which is supported on-an integral arm 62 pivotally attached as at 63 to'a bracket stand 64vwhich rises fromthe base=31. Thearm 621s moved counter-clockwisaasviewed in Figure 1e, bymeansof a pull spring 65 which isattachedat one tend to the :arm 62 and its other end to a laterally extending support 66 fixed .to the stand 64 -such-as by means of..a..screw..connection 61. Thus, the shaft .59 ismounted in a manner so that thesamemay be swung with the bearin 69 as a fulcrum so as to move the friction drive wheel-.51into and .out of engagement with the pulley 56; The bearin -66 is not shown in detail and may be of any suitable manufacture wherein a'rslight pivotalmovement of the shaft 59 may be 4 had for the purpose above described. The shaft 59 will hereinafter be referred to as the main drive shaft of the machine. A locking device designated generally 68 to be hereinafter described is provided for locking the friction drive wheel 51 and friction wheel 56 into engagement with each other.

In the present instance, motion is transmitted by means of a belt connection to the main drive shaft 59 from a power shaft 69 (Fig. 1) which is secured to the under side of the base 31. The power shaft 69 may be in turn driven from any suitable source of power (not shown) which may consist of. an electric motor. The power shaft 69 carriesa pulley layer which is trained a belt 1| which extends-over a pulley 12 carried by a jack shaft. 13 journaled in bearings (not shown) and positioned beneath the base 31. The jack shaft is alsocarries a pulley 14. The main drive shaft carries a pulley 15 and a belt 16 extends over the pulleys 15 and14.

The yarn or thread to be wound on the bobbin 2! :may' be a single strand or may consist. of a plurality of strands, each of which. may be supplied from individual packages (not shown). When a plurality of strands are to be wound on a bobbin, the usual previousdoubling operation, heretofore necessary so as to provide ply yarn prior to the winding-thereof on braider carrier bobbins, is elminated. In the .instant disclosure the yarn Y is shownas a single strand but this only for purposes of illustration. The yarn is led from a suitable supply source (not shown) through guides 11 and 18 and to the bobbin 2!. The traverse of the yarn back and forth across the bobbin is accomplished by means of a traverse motion mechanism designated generally 19 (see Figures 1, 2, 3, {Land-13). Themech-. anism comprises a bar in-having arecess 8| substantially midway at the upper. edge thereof (see Figure 11). A pair of fiat thin blocks 82 are positioned acrosstherecess endto end length- Wise'of the bar 86 but spacedfromeach other a distance so as to provide anarrow space orguide slot 63 at a location substantially midway of the recess 8! These blocks are secured in place such as by means of screws 84. The bar is secured toa traverse rod by means of end members or brackets 86, each ofwhich has a similar recess as at the upper end thereof (see Figure 8) in which is snugly received the ends of the-bar 89. The bar 89 is fastened in place to these brackets by means of pin orthe like connection 89. The lower end. of each bracket is provided with an opening 99 through. which passes the traverse rod 85. The brackets areadjustably secured to this traverse rodby means of screws 9|.

The traverse rod 85 is slidably supported at one end thereof in a bearing 92(see Figure 1). The other end of thetraverse rod is maderectangular incross section and is slidably mounted inspaced guides 93'. The traverse rod 85 is reciprocated by means of a circular. cam 94 having a cam groove 95 in the periphery thereof. The cam is suitably mounted .on a shaft 98 which is journaled in bearings 91 and .is operatively connected to the traverse rod 85 by means of a cam follower 98 which is secured to the traverse rod 95 and additionally supported by means of a rod 99 extending through the follower and secured thereto. The rod extends parallel to the traverse rod and is slidably mounted in guide openings I613. The follower has a pin |6l which extends into engagement within the groove 95. Rotation of the cam is accomplished by means of a worm gear wheel I02 carried on the shaft 96 and engages with a worm I03 that is carried by a vertical shaft I04. The shaft I04 is journaled in a bearing I05 and projects through the base 31 and carries at the lower end portion thereof a beveled gear I06 which engages with a similar bevel gear I01 carried by the power shaft 69. The yarn Y is led from the guide I8 to lie in the recess BI and in the guide slot 83 between the blocks 82. With the cam in motion the traverse rod 85 and the bar 80 attached thereto will be reciprocated, and the yarn will be traversed back and forth across the bobbin 2I in a well-known manner.

When thebobbin 2| becomes filled, a detector mechanism-designated generally I08 operates to set in motion mechanism to trip the locking device 68 (see Figure whereby to disconnect the bobbin drive. The detector mechanism comprises an annulus or trip wheel I09 (see Figures 1, 8, 9. and 13) having a wedge-shaped section IIO which extends to substantially the center of the wheel and has a mounting opening I I I therein positioned eccentrically relative to the center II2 of the wheel. The trip wheel I09 is mounted for free rotation of an arm II3 which has a bifurcated end providing spaced arms II4 between which the trip wheel is positioned and secured by means of a pivot pin H5. The arm II3 also has side extensions I I6 and is carried by a shaft 1 having a thread-ed reduced end portion II8 which extends through the other end of the arm and is engaged by a nut H9 so as to fasten the arm and the shaft to each other. The shaft I I1 i in turn journaled in bearings I which are carried by a bracket I2I that is secured to the upper edge of the stand 64 such as by cap screws I22. The arm I I3 extends from the shaft forwardly to a point directly over the body of the bobbin and positions the trip wheel I09 at a location to be engaged by the yarn of a filled bobbin. The periphery of the wheel I09 is spaced from the axis of the bobbin a predetermined distance which may be varied according to the nature of the work by means of an adjusting threaded member I23 which threadedly extends through the extension H6 and into engagement with shelf I24 carried by the bracket I2I. A lock nut I25 secures the member I23 in adjusted position.

It will be noted with reference to Figure 9 that the trip wheel is in effect a cam having a high side I26 and a low side I2! weighted by the sector to normally position the low side of the trip wheel adjacent the bobbin. When the yarn placed upon the bobbin builds up sufficiently, the trip wheel I09 will be engaged and rotated. Because of its eccentric mounting a partial rotation thereof will swing the arm II3 upwardly sufficiently to rock the shaft I I7. This motion is transmitted to a short arm I23 which carries at one end thereof a pin I29 that projects laterally thereof and is fixed at the other end to the shaft Ill. The locking device which is tripped through the action of the pin I29 consists of a catch part I30 and a latch part I3I (see Fig. 15). The catch consists of a member I32 which is suitably secured to the upper side of the bearing 6I centrally thereof and extends substantially vertically therefrom. The upper portion of the member I32 is slotted lengthwise forming a. shoulder I33 and providing spaced arms I34. I

The latch I3I (see Figs. 8, 14, 16) is made in two sections I35 and I36, with the adjacent end portions I31, I38 thereof placed side by side in overlapping relation. Each end of the overlapping portions of the sections is provided with a similar slot I39 and I 40 which extends lengthwise of the sections. The section I35 has a pin I41 fixed thereto which extends through the opening I40 (see Figure 14), while the section I36 has a similar pin I42 fastened thereto which projects through the opening I39 in the other section. Both of these pins project substantially an equal distance on the side of the section I36 and a pull spring I43 has its end anchored to the pins I 4| I 42 whereby the sections I35, I36 are yieldingly urged toward each other. The sections I35, I36 are movably held together by a stud connection I44. The free end of the section I35 extends between the arms I34 and has a notch I45 in the lower edge thereof providing an abutment I46 which may be moved into engagement with the shoulder I33. The section I35 is also provided with a guide I46 which has an arm I4Ispaced from the lower edge of the section I3I providing an open recess I48. The guide is attached to the section by means of cap screws I49. The free end of section I36 is pivotally mounted on the upper end of a vertically extending lever I56 (see Figure 16) by means of a pivot pin I5I. The lower end of the lever I50 is pivotally supported by a bracket I52 by means of a pivot pin I53.

The pin I29 on the arm I28 projects through the recess I48 and when the arm I28 is rocked by the parts associated therewith, the pin I29 will lift the latch I3I and disengage the abutment I46 from the shoulder I33, whereupon the arm I32 under the influence of the pull spring 65. will be moved counter-clockwise as viewed in Figure 14 to move the friction drive wheel 51 out of engagement with the friction wheel 56 and the bobbin drive will come to rest.

Provisions are also made whereby the latch may be manually disengaged from locking position. To this end, a cam I54 is provided (see Figures 8, l0 and 14). The cam I54 in the present instance is in the form of a disc having a handle I55 and opening I56 which is eccentrically disposed relative to the center of the disc. The cam is rotatably mounted on the portion I3'I by means of the stud I44 which has a head I51 and a reduced threaded end I50 which extends through the portion I38 and is fastened thereto by a nut I59. The stud extends through the opening I56 in the cam and through an elongated opening I66 in the section I35 thus providing for relative sliding relation between the sections.

The section I35 has a pin IBI which extends into engagement with the periphery of the cam I54. Turning the cam on the stud counterclockwise, as viewed in Figure 14, and applying a slight lifting force, will through; the pin I6I move section I 35 to the left against the urge cf the spring I 43 and disengage the abutment I46 from engagement with the shoulder I33. Upon the release of the locking device 68 either automatically through the action of the trip wheel I09 or manually by means of the cam I54, mechanism, which is cam actuated and operable for providing the several motions required for automatic dofiing, will be set into motion. These control cams, of which there are nine in number in the present disclosure are designated I62, I63, I64, I65, I66, I61, I68, I69, and I10 respectively and in the order in which each performs its function (see Figure 1). These cams are mounted on a cam shaft III which is journaled in spaced bearings :I 12" ,andll 13 extendingirom a common-support-114 fixed tothebase 31. The cam shaft I1i is rotated bymeans of a worm wheel I15 which is carried at one end of the cam shaft and is engaged by a worm I16 mounted on a vertical shaft I11, a-portion of which projects below the base 31. The lower end of the shaft I11 carries a pulley I 18 through which motion is transmitted tothe shaft.

Motion is transmitted to the pulley I18 from a drive source which may be considered and hereinafter referredto as the secondary drive designated generally I19 (see Figure 1). The secondarydrive consists of a driven Wheel. I89 which carries a grooved pulley I9I which may be formed integral with. the wheel. The driven wheel. I89 is carried by a shaft I82 and is fixed thereto in any appropriate manneriso as to rotate therewith. The shaft is journaled in a bearing support I89. The wheel I99 is positioned at a location to be engaged by a friction wheel I84 which is secured to the main drive shaft 99. Whenthe main. drive shaft 59 is moved to disengage the wheel 51 with the wheel 59, the friction wheel I 84 will be moved into engagement with the driven wheel I89 so as to rotate the same; that is, the movement of the drive shaft in one direction will disengage the bobbin drive and place the secondary drive in action. The movement of the drive shaft in the opposite direction will disengage the secondary drive and place the bobbin drive in action. A belt I89 is trained over the pulley IBI and extends through a suitable opening (not shown) in the base 31 at a location beneath the pulley I8I. The belt I85 extends over guide idler pulleys I86 and on over the pulley I18 whereby upon rotation of the shaft I82, 'motion will be transmitted to the cam shaft.

In order to re-engage the bobbin drive, the lever I59 (see Figure 16) is provided with a cam follower I 81 which engages with the surface of the cam I19. The cam I19 in the instant disclosure is circular and has a depression or recess ISB'therein in which the follower will ride when opposite thereto The follower is maintained in engagement with the cam surface by means of a pull spring I89 which is attached at one end to the lever and at the other to a pin I99 which may be secured to the base 31. Upon the follower I81 entering the recess I88, the latch ISI will be moved forward by the movement of the lever I59 a distance sufficient to position the abutment I46'beyond the shoulder I33 and in position to engage the same upon the latch dropping by gravity. Upon further rotation of the cam I19, the'follower will ride out of the recess I98 and onto the periphery of the cam and swing the lever I59 in the opposite direction to engage the abutment with the shoulder I33 and pull the member I32 to swing the arm 92 about its pivot 63 and move the friction drive wheel 51 into driving relation with the pulley 59.

The removal of a filled bobbin 2! from between the centers 21 and 28, and its discharge such as through an opening I9I in the base of the machine to be received in a suitable receptacle (not shown) is accomplished by means of a carrier designated generally C (see Figures 1, 12 and 13) The carrier comprises spaced members I92, each of which is similarly constructed of resilient material bent into U shape providing resilient fingers I93, between which there is positioned a support I94 secured in place by screws I95. Each member I92 is fastened in spaced relation "on a shaftISIi which is rotatably supported on a movable framedesignated generally I91 comprising a pair of generally parallel and vertically extending arms I98 and I99. Each arm is of a general U formation providing lateral extensions 290 and 2M at the upper end thereof. The upper ends of the arms are secured to each other in spaced relation by means of a tie rod 292 extending through the extension 20I and secured in place by nuts 293. The lower end of the arms are secured to each other in a similar manner by means of a tie rod 204 and nut connection I95. The shaft I99 is journaled in the extension 299 with the resilient fingers I 93 extending towards thebobbin 2 I The frame I91 is pivotally attached intermediate the ends thereofto a bracket s pport 295 having spaced ears 296 which is secured to the under side of the base in any convenient mannersuch as by cap screws 291. The arms of the frame I91 extend between the ears and a pivot pin 298 having threaded ends passes through the ears and arms and is secured in place by nuts 299 engaging the threaded end thereof; The frame is moved or. swung about the pivot pin 298 by means of a lever 2 II) which extends generally vertically and is pivotally mounted on a support (not shown) by a pivot pin 2II. The lower end of the lever 2I0 is pivotally connected-to the frame I91 bya link 2I2 pivoted as at 2I3 and 2I4. The lever 2III extends through a, suitable opening 2I5 in the base 31 to adjacent the cam I92 (see Figure 1) and carries at the upper end a cam follower 2I6 which may be in the form of a pin which projects into engagement with the cam I62. A pull spring 211 has one end anchored to the under side of the base 31"as at 2I8, and the other end thereof is fastened to the lower end of the lever 2H) as at H9. The spring 2I1 will move the lever 2I9 so that the pin 2I6 will follow the periphery of the cam I96 so as to cause the frame to be swung counter-clockwise as viewed in Figures l2 and 13 and move the fingers I93 into engagement with the heads of the bobbins.

These fingers I93, as previously described, are resilient and are spaced a distance less than the diameter of the bobbin heads and will be spread apart upon riding over the bobbin heads whereby a tension will be placed on the fingers sufficient to firmly hold the bobbin therebetween during the transfer thereof to the point of discharge. In operation the frame is swung from the full line position shown in Figure 12 to the forward position to engage the heads of the bobbins as shown in dot and dash line 229. The fingers will remain in the dot and dash line position until the centers are retracted or withdrawn from engagement with the bobbin. The fingers I93 are guided in their movement toward and away from the centers by means of a lever 22I (see Figure 12) which is fastened at one end thereof to an end of the shaft I96 and carries at the other end thereof a pin 222. The pin 222 engages with a cam surface 223 which is provided on a support 229. The pin 222 is biased into engagement with the cam 223 by means of a grooved pulley 225 which is attached to the other end of the shaft I96. A pull spring 226 is secured at one end thereof in the groove of the pulley 225 and at the other end to the base 31 as at 221. 2

Upon withdrawal of the centers 21, 28 from engagement with the bobbin in a manner to be hereinafter described, the frame I91 will be moved in the opposite direction bythe action 9'5 of the cam I 32. The pin 222 riding on the cam surface 223 will turn the shaft 195 counterclockwise about its axis, as viewed in Figure 12, and swing the fingers I93 with the bobbin carried thereby downwardly to opposite the opening I9I in the base 31. During the rearward movement of the frame I31 to the position shown in dot and dash line 228 in Figure 12, the bobbin will engage stripper fingers 229 which are secured to the base 31 as at 235 (see Figures 1 and 12) and rise at an angle to the path of movement of the bobbin to be engaged thereby to be stripped from between the fingers !53 of the carrier. Upon further movement of the cam after the bobbin has been stripped from the fingers the frame will be again moved under urge of the spring 2I1 forwardly to the initial position, as shown in full lines in Figure 12.

The centers are withdrawn from engagement with the bobbin substantially simultaneously through the action of the cams I65, I55. The

center 21 is withdrawn by means of a collar 23I (see Figures 1 and 4) which is positioned about the sleeve 32 and over the opening 35 therein. A set screw 232 threadedly extends through the collar 23I and into frictional engagement with the spindle 29. A lever 233 (see Figures 1 and 3) has the lower end thereof secured to a shaft 234 and extends upwardly into engagement with the collar 23L The shaft 234 is journaled at one end thereof to a bracket 235. The other end of the shaft 234 is journaled in the support H and carries a lever 236 which extends upwardly therefrom and has a cam follower 231 secured thereto which projects into engagement with the cam I35 to be moved thereby and in turn rock the lever 233 to. slide the spindle 23 within the sleeve 32 and out of engagement with the head 23 of the bobbin, the center being returned into engagement with an empty bobbin by means of the spring 39 as previously described.

The center 28 is similarly withdrawn from engagement with the bobbin by means of a lever 238 having a pin 239 at the upper end thereof projecting into the recess 50 in the collar 43 (see Figures 1 and 2). The lever 238 is carried by a shaft 240, one end of which is journaled in a support 2M and the other end thereof in a support 242. A second lever 243 is carried by the shaft 240 and extends upwardly and has a cam follower 254 secured thereto which projects into.

engagement with the cam its to be rocked thereby to move the collar 49 to the left, as viewed in Figures 1 and 2, to withdraw the thimble 23 from engagement with the bobbin. The thimble 28 is moved into engagement with an empty bobbin by means of the compression spring 5!, as previously described.

Prior to the removing of a filled bobbin from between the centers, the yarn strand Y is disengaged from the traverse 19 which is in continuous motion when the machine is in action. This is accomplished by means of a U-shaped member 225 (see Figure 8) having a body 245 with arms 241 extending therefrom. The body is of a length to extend the full distance of the traverse motion and is positioned between the traverse bar 85 and the guide 18. The arms 241 extend at rightangles to the body and into engagement with a shaft 243. The arms may be fastened to the shaft in any suitable manner such as welding thereto as at 223 as to rock therewith. The shaft 248 isrockably mounted in a support 250 which for convenience is positioned beneath the bobbin 2I. The end of the shaft 248 carries 101 a lever 25I having'an arm 252 which depends therefrom. The shaft 248 is rocked about its axis by means of a lever 253 (see Figure 10) which is pivotally mounted on the bracket I22 by means of a pivot pin 255. The lower end of the lever 253 is L-shaped providing an arm 255, the end of which is movably secured to the arm 252 such as by means of a pivot connection 256. The upper arm 251 of lever 253 is secured to the arm I32 to be rocked thereby. To this end, a support 258 is attached to the upper end of the arm I32 such as by means of a nut and bolt connection 259 (see Figure 8). ly horizontal and has an opening 250 (Figure 8) at the free end thereof through which a rod 26I slidably projects With the inward end portion thereof secured to the upper portion of the lever such as by means of a hook 262 formed at the end of the rod and which engages in a proper opening 263 in the arm 251. The other end of the rod 25I is threaded and receives nuts 264. A cushioning compression spring 265 encircles the rod 26I between the support '258 and the nuts 263. The movement of the arm I32 upon the release thereof by the tripping of the latch I3I will move the rod ZEI in a direction to swing the lever 253 clockwise, as seen in Figure 10, to rock the shaft 248 clockwise and move the body 245 upwardly a dis tance sufficient to engage and move the yarn Y from engagement with the traverse.

In the cycle of operation of the carrier, the fingers E93 are moved forward to engage a filled bobbin and then come to rest so as to permit the centers to be withdrawn, and then are moved rearwardly a distance sufilcient'to clear an empty bobbin to be positioned between the centers and then momentarily come to rest. Empty bobbins to be in turn placed between the centers 21 and 25 to be filled with yarn are carried in a hopper designated generally 251 (Fig. 13) having rear, side, and front walls 268, 259, and 210 respectively providing thereby a compartment 21I open at the top and bottom. The compartment 21I is of a size in cross section to slidably receive the empty bobbins 2 I. The hopper is also open in the front as at 212 whereby the bobbins may be viewed or manually manipulated when desired. A stop 213 upon which the lowermost empty bobbin rests is secured to the rear wall 258. The hopper is mounted to be in a normally generally vertical position at the rear of the centers in such a manner that the lower end thereof may be swung to position the lowermost empty bobbin between the centers. This is accomplished by pivotally mounting the upper end of the hopper by means of perforated spaced ears 214 (see Figure 1) which extend rearwardly from the upper portion of the rear wall 258. A rod 215 extends through the ears with the end portionsthereof fixed in vertical supports 215 and 211 which are secured to the base 31 on either side of the hopper.

In order to hold the lowermost empty bobbin in proper position tobe transferred to the centers, a pair of fingers 218 are secured in spaced relation on a rod 219 in a manner so as to depend therefrom into engagement with the lowermost empty bobbin (see Figures 3 and 13). The rod- 219 is rockably mounted in cars 285 which extend forwardly from the side of the hopper. The fingers are yieldably held in contact with the lowermost bobbin by means of a lever 28I which is attached to one end of the rod 219. A pull spring 232 (Fig. 3) has one end attached to the lever 28I and the other end attached to a suitable support The support 258 extends substantial 11 which may be a pin 283 attachedto the side wall 269 of the hopper.

The hopper is normally held in the vertical position and swung forwardly to position an empty bobbin between the centers upon the withdrawal of the filled bobbin by means of an arm 284 which is fastened to the rear wall 268 and carries at the freeend thereof a roller 285 (see Figuresl and 13). A lever'286, the lower end of which is pivotally secured to a support 281, extends upwardly into engagement with theroller. A cam'follower 288 is attached to the lever 286 and projects into engagement with thecam I66. Upon movement of the cam I66 the lever will be swung about its pivot and in turn swing the hopper to the position shown in'Figure 13, so as to position the lowermost empty bobbin Zla in line with the centers. In proper sequence, the centers 27, 28 will be released from the retracted position and through the actions of the springs 39 and previously mentioned, the centers will be moved into engagement with the empty bobbin, whereupon the hopper will be moved toinitial position through the action of a pull spring 289 which may be attached to the rear wall 268 of the hopper at any convenient location thereon and with'the other end thereof to a support 299 (Fig. 13) which may extend'from any convenientlocation on the machine.

Upon an empty bobbin having been positioned and engaged'by the centers 2! and 28, a mechanism designated generally 29! is set in motion to wrap the yarn about the empty bobbin now in position between the centers. This mechanism (see Figures 2, .3, 6, and 7) comprises a grooved pulley 292 having a hub 293 on one side thereof which is provided with an annular On the opposite side of the pulley there is provided diametrically disposed arms 295 which extend axially from the pulley. Each arm is slotted as at 299 and receives therein a driving finger 29'! which is pivotally secured to the arm such as by means of a pivot pin 298. The fingers 291 are rounded at the free end thereof and carry a pin 299. A pull spring 399 is attached to pins 299 whereby'the fingers 291 are tensioned toward each other against a stop pin 39 I carried by each arm 295.

The pulley 292 (Fig. 17) is slidably mounted on the bearing 53 to be moved in a manner to be hereinafter described so as to position the fingers 29'! into engagement with the adjacent end of the bobbin, whereupon rotation of the pulley the bobbin will be rotated thereby. The yarn Y to be wrapped about the empty bobbin is held in a holder'designated generally 392 which is carried by the pulley 292 so as to be revolved thereby about the axis of the empty bobbin. The holder comprises a rod 393 (Figs. 6, '7) having an enlargement or a head 394 at one end thereof and slidably receives thereon a cup-like member 395. A compression spring '396 of a relatively fine wire encircles the rod 393 between the head 394 and the cup 395. A second spring 391 of a heavier wire encircles the rod 393 on the other sideof the cup 395. The end portion of therod between the cup. and the head is recessed as at 398 for a purpose to be hereinafter described. The rod 393 slidably extends through the bight of a U-shaped member 399 which provdies an abutment 3l9 for the spring 39! toact against. The arms 3!! of the member 399 are positioned to straddle an enlargement or block 3|2 extending from the flange of the pulley 292 and are there secured in position such as by means of screws 3 I 3. The end of the rod'393 also slidably extends through the block and flange of the pulley (see Figure 2). The rod 393 is secured in place by means of a collar 3I4 which is positioned on the rod at a location to be between the arms 3!! and there secured to the rod such as by .a screw 3I5. The collar 3 I4 is provided with a fork arm 3|6 which extends upwardly to straddle the spindle 43 so as to prevent the rod 393 from rotatingabout its axis.

'It will be noted with reference to Figure 7that when the pulley 292 is moved along the bearing 93 toward and into engagement with the bobbin, the sprin 39! will be compressed which in turn will compress the spring 396 between the cup 395 and the head 394. It will be also noted from Figure 6 that when the pulley 292 is in the inactive position that the coils of the spring 396 are open which provides a space therebetween for the length of yarn Y which extends from the guide I8 to the filled bobbin 2! to engage therein. It is here also pointed out that the recess 398 is provided to assure sufficient depth between the coils for the yarn to be received therein.

Prior to the release of the filled bobbin from between the fingers I93, the yarn Y is severed. This is accomplished by means of a knife blade 3I6 (see Figures 1 and 3) carried at the end of a lever 3!! which is pivoted to a bracket 3|8 by means of a pivot screw 3l9. The lever 3!! is swung about its mounting to move the blade 3|6 across the yarn Y which extends from the guide I3 to the filled bobbin now in the position substantially as that shown in dot and dash line 329 in Figure 12. Means for moving the lever 3!! includes a shaft 32! (see Figure 1) which is mounted at one end on the support 24! and at the other end on the support 242. A lever 322 has an arm 323 which extends upwardly and is provided at the upper end with a cam follower 324 which is projected into engagement with the cam I69. The other end of the shaft carries a lever 325, the arm 326 of which is connected to the lever 3!'|' by means of a connecting link 32?. The cam follower 324 is biased into engagement with the surface of the cam by means of a, torsion spring 328 which encircles the shaft 32! and is secured at one end to a collar 329 in an appropriate manner and at the other end to some portion of the support 242 such as at 339.

The pulley 292 is moved along the shaft to position the fingers 29'! carried thereby into engagement with the head of the empty bobbin,

' as previously described, by means of two similar levers 33! (Fig. 6) which are provided at their upper ends with pins 332 to engage into the recess 294 of the pulley 292 (see Figures 1 and 5). The lower ends of these levers are secured to a shaft 333 which is journaled at one end in the support 24! (Fig. 1) and at the other end portion in the support 242. A second lever 334 is carried by the shaft 333 and rises therefrom with the upper end portion carrying a cam follower 335 projecting into engagement with the cam I61. The cam follower 335 is maintained in contact with the cam I61 by means of a, lever 336 attached to the shaft 333. A pull spring 33'! is attached at one end thereof to the lever 336 and the other end thereof is attached to any convenient position to the base 3'! as at 338. The pulley 292 when in the inactive position as shown in Figures 1 and 6 is prevented from free rotation by means of a lever 339 (see Figure 2) which is pivoted at the lower end by means of pivot pin 349 to a support secured to a support 314.

34!. The upper end of this lever extends into engagement with a shoulder 342 formed by a recess in the end of the hub 293 (see Figure 5). The lever 339 is biased into engagement with the shoulder 342 by means of a pull spring 343 which is anchored at one end thereof to a support 344 and at the other end thereof to the lever 339. Upon Sliding of the pulley towards the bobbin the same will ride out of engagement with the upper end of the lever 339. The lever will be prevented from following the pulley by means of a stop 345 which is positioned to engage the edge of the lever (see Figure 2).

. Motion is transmitted to the pulley 292 from the secondary drive shaft I82 (Fig. 1) which is provided at one end thereof with a reducing gear cluster designated generally 346 which is engaged by a gear341 carried by a shaft 343 that is journaled in spaced bearings 349 and 350. The shaft 348 carries a clutch-driven pulley 35! which has an elongated hub 352 (see Figure 18) and a frictionsurface 353. A belt 354 connects this pulley 35! with the pulley 232. A sleeve 355 having a reduced portion 356 providing a shoulder 351 is attached to the shaft 348 by means of a headless set screw or the like 358. The pulley 35! isrotatably mounted on the reduced portion 356 and a friction disc 359 of leather or like material'is interposed between the shoulder 351 and the friction surface 353 on the pulley. The reduced portion 356 extends beyond the hub 352 and finds hearings in a, fork lever 363, the sides of which e gage the hub 352. The lower end of the lever 360 is secured to a shaft 36! which is journaled at one end in a bearing support 362 and at the other end of the support 362. A short lever 363 is secured to the shaft 36! and a pull spring 364 has one end thereof attached to the lever 363 and its other end to a similar lever 365 carried by the shaft 333 whereby when the shaft 333 is rocked by the cam I61, tension will be placed upon the lever 360 to move the pulley 35! into frictional driving relation with the sleeve 355 to be rotated thereby. It will be noted that when the pulley 392 is in the inactive position the pulley 35! will come out of driving relation with sleeve 355.

In order to prevent the yarn Y from dropping beneath the holder 302 upon the severing of the yarn, a guide finger 366 is provided (see Figures 1, 3 and 1'7). This guide finger 356 is movably mounted by means of a crank lever 361 to be moved just above the holder 302 so as to engage the yarn length extending between the guide 16 and the filled bobbin as being moved to the point r of discharge. The lever 36! is pivotally mounted as at 368 to a support 369 and has an arm 310 which extends substantially horizontal from the pivot and has secured thereto the guide finger 366. The other arm 31! is connected by means of a link 312 to a lever 313 which is pivotally The lever 313 carries a cam follower 315 which is engaged by the cam I63 to be rocked thereby. Upon the lever being rocked by the cam I63 the lever 361 will also be rocked counter-clockwise as viewed in Figure 17 and raise the guide finger 366 from the full line position shown to that of the dot and dash line position shown.

'After the yarn Y has been severed the guide finger 366 will bepermitted to move out of line with the holder 302 and permit the severed yarn end to drop between the coils of the spring 306 whereupon the sliding movement of the pulley 292. will compress the springs 301 and 306 .and

thereby firmly secure the yarn end to the holder. Upon the release of the pulley 292 from engagement with the lever 339, the pulley 292 will be free to be rotated and revolve the holder and the bobbin, carrying the yarn Y therewith. Substantially simultaneously with the start of rotation of the empty bobbin by the fingers 291, the guide 18 will be moved to traverse this initial length of the yarn on the bobbin to firmly tie the same into' position. This guide 18 comprises a lever 316 (see Figures 1, 2, and '1) which is pivoted intermediate its ends as at 311 and carries at the upper end thereof a cam follower 318 which engages with the cam I68 to swing the lever about its pivot. The lower end of the lever carries an extension 319 which carries the yarn guide bushing 380 through which the yarn extends.

The action of the cam I68 on the lever 316 is such that the guide 18 will be swung to the position as shown in the full line position in Figure '1, then the lever 316 under the influence of the tortion spring 38! will follow the surface of the cam, and the guide will be returned to initial position and there remain stationary as shown in dot and dash line in this Figure '1, having in its movement crisscrossed the yarn about the core of the bobbin. While the yarn is held sufficiently firm between the coils of the spring the same will be pulled from therebetween upon the wrapping thereof about the package. In the present timing of the machine, the pulley 292 will revolve and carry the holder 362 for six revolutions about the core of the bobbin and then the pulley will again be returned to its initial position and into engagement with the lever 339 to prevent further rotation thereof.

Upon the disengagement of the fingers 291 from driving engagement with the bobbin,lthe cam I10 will have rotated sufiiciently so as to permit the latch I3! actuated thereby to engage with the arm I32 to disengage the secondary drive and place the bobbin drive into action in the manner previously described.

The operation of the several parts of the apparatus has been given in connection with the detailed description thereof and, therefore, but a brief general description of the operation of the machine will be necessary for a complete understanding of the manner in which the machine operates. With an empty bobbin in proper position between the centers and the yarn engaged by the traverse motion, assuming the motor to be in action, the yarn will be wound about the body of the bobbin. When the bobbin has been sufiiciently built up with yarn, the trip wheel 109 will be engaged to trip the latch I3! from engagement with the catch I30 whereupon the friction drive wheel 51 will be moved out of engagement with the pulley 56 and into engagement with the driven wheel I80 of the secondary drive I19. The filled bobbin will now come to rest and the cam shaft I1! will beset into motion through its connection with the secondary drive. The movement of the arm 62 to disengage the friction drive wheel 51 will also actuate member 245 to disengage the yarn from the traverse motion, which, as previously stated, is a continuous motion, while the machine is in action. The carrier I92 will now be set into action by cam I62 to move the fingers I93 into engagement with the heads of the filled bobbin and there momentarily come to rest. The centers are next with-- drawn from engagement with the bobbin by the simultaneous operation of cams I64, I65. Upon the withdrawal of the centers from the bobbin,

15 the carri'er I92 with the filled bobbin held therein willsbeimoved rearwardly :to a position just suflicientsoas toclear thepositioningof an empty bobbincbetween the centers. The-guide finger 366 will now be raised or moved into position soasrto prevent the yarn strands fr0m=accidentally being positioned beneath the holder .302 upon further movement of .the filled bobbin to theypoint 'ofidisc'harge thereof. The hopper 261 will be swung bymeans of :icam N56 to position the hopper-to align an empty cbobbin between the centers. "With theempty bobbin in properposition, the .centers nunder urge of springs 35 and 51 will bermoved into engagement withthe empty bobbin. After the centers have moved into engagement'with the bobbin,'the hopperwill swing back: to -its initial. position through the-action of the pullispring-ZBQ. The carrier I92 is now set. into fmotion for further rearward movement was to carry the filledbobbin to a positionrabove thev openingiSl and tostrip the bobbin from the; carrier by :means of the stripping fingers 2Z9.

Prior to the release of the'bobbins from the carrier, :the. blade 3l6 will :be swung across the strands to severthe same through the action of 2.

cam I69 and associated parts. After, severing the-:yarnthe guidefinger-SSG will begpermitted to :bemoved out of line with the holder 302 and the-severedyarn=wil1 drop between the coils of the spring'3il6. The drivingfingers 291 will now be;advanced intoengagement with the headof the bobbin'to-rotate thesameabout its'axis, the yarn-wrapped about the bobbin core-by holder 302. Theyarn'will now be laid about the bobbin and initial traversev by means of the actuation of the guide 18 through theaction of: the cam H58 and associatedparts. After siX revolutions of the holder'about the-bobbin the fingers 291 and pulley 292::will be .moved'to inactive, positionjinto engagement with the lever 339. Referring to Figure-2 it will be noted that'the guide 18 isat a position to the right of the free end of holder 302 thereby locating said holder out of the'path oftheyyarn initiallywrapped about the bobbin.

.After the drive fingers 29'! have become disengaged fromdriving engagement with the'bobbin,.-.the cam H0 will have nearly'completed one revolution. to place therecess I88 at aposition for the follower I81 to ride into. Thiswill move the latch I3! forwardly of the'catch I-30- to permit the-same to drop-by gravity pastthe-shoulder I33. The trip wheel I09 now being free to move. will also drop to ,initial; gauging position and rockthe shaft- I I! in the direction to-move member 245 from the blocking position through the linkage connection with shaft I I1 whereupon theyarn Y will be, permitted to ride into the traverse slots 8|, 83. Upon further movement of the :cam, the follower I81 will ride out of the recess onto the periphery of the cam and move thelatchto-disengage the secondary drive to bring the camshaft to rest and re-engage the bobbin drive. It is here pointed out that the domng of the bobbins is accomplished during one complete rotation of the cam shaft.

Inorderto movethe tripwheel out of the path of movement of the hopper as-the same is swung forwardly, an abutment orroller=28l is secured to a strap-"282 which is fixed to the side 'of the hopper (see Figures 13 and "14). This roller projects into engagement beneath the latch [3| and will raise the latch -as the hopper is moved forward. The pin K29 whichextends in the space H8:wi1l-be moved to-swing or-rock the shaft' I I1 inia ection-so as to raise the trip wheel [-09 16 out .of the. path of movement ofthe hopper as best seen in'Figure l3.

Iclaim:

. 1. A strand winding machine comprisingmeans for rotatably. supporting a core aboutwhich yarn is to be" wound, a drive means forengagingone endofsaidcore for rotating the same, asecond drive means for engaging the other end of said core forrotating-the sameand means for engaging either one of said' drives for retatingsaid core, each of said drives rotating said core in the same direction.

2. A strand winding machine comprising means for rotatablysupporting a core about which-yarn is to be wound, a drive means for engaging one end of said core for rotating the same, asecond drive means for engagingthe other "end ofsaid core for rotating thecsame .and means for engaging one of said drives for initially rotating said core. and means for disconnecting the said one of said drives and operable for-connecting the other ofsaid drives to rotate said core, each of said drives rotating said core in the samedirection.

3. A strand winding. machine comprising means for rotatably supporting a core about which yarn isto be wound, separate. independent drives for rotating. said core, one bfsaid drives having a plurality of driving fingers slidably mounted for movement. to and out of engagement with said core and the other ofsaid drives having interlocking engagement withsaidcore.

4.. A strand winding machine comprisingmeans forrotatablysupporting a core about whichv yarn is'to be wound,. separate independent drivesfor rotating said-core, andsa commonufriction drive means for transferring motion toeitherof said drives, each of said drives rotating: said core in the same direction.

5. A strand windingmachine as set forth in claim 4 wherein said common means include a. friction drive wheel pivotally supported for movement into and out of engagement-with one of said'drives.

6.- A strand winding machine comprising means for rotatably supporting a core about-Which yarn is to be wound, separate drives for rotating said core, a friction'wheel for one of said drives, a friction drive wheel movably mo'untedfor movement to and fromengagement-with said friction driven wheel, a lock. for holding said "friction wheels in driving relation with eachother, and means operable by the'yarn-on said coreifordisengaging the lock.

7. A strand windingmachine comprising means for rotatablysupporting a coreabout whichyarn is to-be wound, separate drives-'forrotating said core, a friction driven wheel for one of said drives, a friction drive wheel movablymounted for movement to and from engagement with said friction driven wheel, a lock for holding said friction. wheels in driving relation with each other, and means operable by the yarn" on said core for disengaging the lock, and resilient means form-oving said friction-wheels out of engagement with each other.

8. A strand winding machine c'omprising means for rotatably supporting a core about which-yarn is to be wound, separate drives for rotating said core, a friction driven wheel forone of said drives, a friction drive'wheel'movablymounted for movement to and fromengagement-with said friction driven wheel, a latch. andv catch for holding said friction wheels in drivin'g relation with each other, and means operable by the 17 yarn on said core for disengagingthe latch from said catch.

9. A strand winding machine comprising means for rotatably supporting a core about which yarn is to be wound, separate drives for rotating said core, a friction driven wheel for one of said drives, a friction drive wheel movably mounted for movement to and from engagement with said friction driven wheel, a latch and catch for holding said friction wheels in driving relation with each other, and means operable by the yarn on said core for disengaging the latch from said catch, and resilient means for moving said friction wheels out of engagement with each other.

10. A strand winding machine comprising means for rotatably supporting a core about which yarn is to be wound, separate drives for rotating said core, a friction driven wheel for one of said drives, a friction drive wheel movably mounted for movement to and from engagement with said friction driven wheel, cam-operated means for moving said friction drive wheel into frictional engagement with each other, resilient means operable for moving said friction wheels out of driving relation with each other, a lock for holding said friction wheels in driving relation with each other, and means operable by the yarn on said core for disengaging the said lock.

11. A strand winding machine comprising means for rotatably supporting a core about which yarn is to be wound, separate drives for rotating said core, each of said drives including a friction driven wheel, a friction drive wheel movably mounted for movement to and from engagement with either of said friction driven wheels, a cam-operated means for moving said friction drive wheel into engagement with one of said friction driven wheels and resilient means for moving said friction drive wheel out of engagement with the said one of said friction driven wheels and into engagement with the other friction driven wheel.

12. A strand winding machine comprising spaced centers for rotatably supporting a core about which yarn is to be wound, each of said centers being slidably mounted for movement to and from said core, a core engaging driving means adjacent each of said centers for engagement with said core for driving the same, separate means for rotating either one of said core engaging means, and cam-operable means for moving said centers out of engagement with said core.

13. A strand winding machine comprising spaced centers for rotatably supporting a core about which yarn is to be wound, one of said centers being a drive center, means on said drive center for engaging said core for rotating the same, driving means for rotating said drive center, and means including a wheel eccentrically mounted and positioned to be engaged by the yarn on said core upon said core being filled and moved radially from said core to set into motion means for arresting the said driving means.

14. A strand winding machine comprising means for rotatably supporting a core about which yarn is to be wound, a traverse for moving the yarn back and forth across said core, driving means for rotating said core, means automatically operable for dofilng, means including an eccentrically mounted wheel positioned to be engaged by the yarn on said core to be moved thereby radially of said core upon said core being filled operable to set into motion means for disengaging the yarn from the traverse and arrest the driving means and set into motion the dofling means.

15. A strand winding machine comprising means for rotatably supporting a core about which yarn is to be wound, a traverse for moving the yarn back and forth across said core, separate driving means for rotating said core, means for removing a filled core from said support and means for positioning an empty core adjacent said support to be engaged thereby, and means carried by one of said drive means and rotatable therewith for attaching the yarn strand to the empty core.

16. A strand winding machine comprising support means for rotatably supporting a core at the ends thereof, cam-operated means for moving said support means into and out of engagement with said core, a traverse for moving the yarn back and forth across said core, a first drive means for initially rotating said core from one end thereof, a second drive means separate and independent of said first drive means for rotating said core at the other end thereof and at a greater speed of rotation than driven by the first said means, and cam-operated means operable for disengaging said first drive means and engaging the second drive means with said core.

17. In a bobbin winding machine, a bobbin winding mechanism, a hopper for empty bobbins rockably mounted for movement to and from the bobbin winding mechanism, abobbin transfer mechanism having a pair of flexible fingers for receiving a wound bobbin, and means for actuating said hopper and transfer mechanism in time relation with each other whereby the fiexible fingers are moved to receive a wound bobbin from the winding mechanism and the hopper is moved to the winding mechanism for moving an empty bobbin to be received by the winding mechanism and a stripper means for engaging a wound bobbin to strip th same from said fingers. V

EVELYN LYNDALL WHITBY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 482,308 Hill Sept. 6, 1892 619,506 Roney Feb. 14,1899

1,121,103 Hooper Dec. 15, 1914 1,144,673 Wheeler June 29, 1915 1,684,114 Saal Sept. 11, 1928 2,212,776 Hamel Aug. 27, 1940 2,234,355 Reiners Mar. 11, 1941 2,306,268 Kimpton Dec. 22, 1942 FOREIGN PATENTS Number Country Date 188,195 Switzerland Mar. 1, 1937 273,595 Germany May 4, 1914 855,509 France Feb. 12, 1940

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