US2611547A - Yarn guide for automatic bobbin winders - Google Patents

Description

Sept. 23, 1952 J. w. MAY 2,611,547

YARN GUIDE FOR AUTOMATIC BOBBIN WINDERS Filed Oct. 2, 1950 3 Sheets-Sheet 1 66 9 my JOHN k1!- Mm. L 5 J .2

, Jig L7 BY @MM ATTORNEYS Sept; 23, 1952 J. w. MAY

YARN GUIDE FOR AUTOMATIC BOBBIN WINDERS 5 Sheets-Sheet 2 Filed Oct. 2, 1950 A w W g m 4 v E 7 V 4 m w W M J a Z 0 (Inlllk 4 h A r/v Y M N L w k g 0 BY aqww- ATTORNEYS Sept. 23, 1952 J. w. MAY

YARN GUIDE FOR AUTOMATIC BOBBIN WINDERS 3 Sheets-Sheet 3 Filed Oct. 2, 1950 INVENTOR. Jomv 14 Mm.

ATTORNEYS Patented Sept. 23, 1952 YARN GUIDE FOR AUTOMATIC BOBBIN WINDERS John W. May, Pendleton, S. 0., assignor to Deering Milliken Research Trust, Pendleton, a nonprofit trust of Maine Application October 2, 1950, Serial No. 188,021

7 Claims. (Cl. 242-48) This invention relates to textile machinery and more especially to an improved auxiliary yarn guide associated with the usual yarn guide for directing yarn to bobbins in an automatic winding machine such as the Schweiter automatic filling bobbin winder.

The usual types of automatic winding machines, such as the Schweiter winder manufactured by Whitin Machine Works, Whitinsville, Mass, include a horizontally movable chuck to which empty bobbins are singly directed upon each preceding bobbin having been filled with yarn. During the transfer operation, the chuck is retracted momentarily and then moves outwardly relative to the frame of the winding machine to engage the head of the new or empty bobbin to impart rotation thereto. The usual yarn guide, which traverses the bobbin as it is being filled and directs yarn thereto from a suitable source, is spaced substantially from the bobbin and upon the chuck engaging an empty bobbin, the yarn from the previously filled bobbin simultaneously extends across the face of the chuck and is clamped between the chuck and the head of the bobbin.

However, the usual type of automatic winding machine has a hook member which engages the yarn above the chuck and pulls a certain amount of yarn through the conventional yarn guide and, upon rotation of the empty bobbin, the yarn is drawn over the periphery of the head of the rotating bobbin and then wound around the bobbin. There is considerable slack in the yarn as it is drawn over the head of the bobbin and it, therefore, wraps around the head in a helix of relatively short pitch and, since the yarn is considerably relaxed at this point, the yarn frequently falls into the gaps between the metal rings which encircle the head of the bobbin. In many instances the yarn will be wound about the head of the bobbin several times before being wound about the stem thereof, thus resulting in one or more turns of the yarn being disposed between the rings on the head of the bobbin. This results in the yarn being so 'close to the head of the bobbin between the rings that it is not likely to be engaged by the usual cutting or severing means associated with this type of winding machine so that the yarn is not severed.

It is, therefore, an object of this invention to overcome such defects by providing an auxiliary yarn guide in addition to the usual yarn guide and which auxiliary yarn guide is disposed closely adjacent the head of the bobbin, at its juncture with the stem. This auxiliary yarn guide causes V 2 i V yarn initially directed to the head of the bobbin to be directed thereto in a helix of relatively large pitchso that the yarn traverses the length of the head of the bobbin during substantially one-half a revolution thereof. In this manner, it is not possible for the yarn to fall into the gapsbetween the rings which encircle the head ofthe bobbin or, at least, the yarn is always drawn across at least two of the rings and therefore is high enough between said rings so as to be engageable by the conventional severing means.

Some of the objects of the invention having been stated, other objects willv appearja's' the description proceeds whentaken in connection with the accompanying drawings in which- Figure 1 is a fragmentary top plan view of the automatic winding machine with some of the parts being shown in section and with other parts broken away and showing, specificallyfthe improved yarn guiding means disposed adjacent the point at which the'ya'rn is initially fed to an empty bobbin;

Figure 2 is a fragmentary vertical sectional View looking substantially along the line 2-2 in Figure l and showing the improved yarn guide in operative position;

Figure 3 is'a view similar to Figure 2 but showing the improved yarn guide in an inoperative position; v

Figure 4 is a vertical sectional view looking substantially along the line 4-4 in Figure 1 and also showing the improved yarn guide in operative position;

Figure 5 is a, fragmentary elevation showing a portion of the chuck and a portion of an empty bobbin in association therewith and to which a few turns of yarnhave been directed;

Figure 6 is a view similar to Figure 5 but showing the manner in which the yarn is directed to the head of the bobbin by the improved yarn guide;

Figure 7 (Sheet 1). is a top plan view of the yarn guide removed from the machine and from the supporting means therefor;

Figure 8 is a view of. the yarn guide'looking up at the lower side of Figure 7;

Figure 9 is a top plan view of 'an alternative construction of yarn guide embodying the invention. V

Referring more specifically to the drawings, the numeral 10 broadlydesignates the fram or gear housing of the automatic bobbin winding machine. The particular automatic bobbin winding machine shown inthe drawings is of a type manufactured byWhitin Machine Works, Whit- 3 insville, Mass, and which is known as the model M-S Whitin-Schweiter automatic filling bobbin winder and a complete description of which is given in a booklet entitled Whitin Catalogue of Component Parts, copyright 1945.

The frame or gear housing it contains conventional driving means for driving the various moving Parts of the winder. These drivin means are not pertinent-to the present invention and therefore an illustration and description thereof will not be given. The housing I6 is of cast material and includes a front panel II and a cover I2 which suitably supports a bobbin chute I3, only a portion of which is shown. The front panel I! of the gear housing IIl has a boss or projection id thereon in which a chuck or bobbin head holder has longitudinal sliding movement. The bobbin head holder I 5 is adapted to move inwardly or from right to left in Figures 2 and 3 upon an empty bobbin such as the bobbin or quill, broadly designated "at I6, being directed thereto from the chute I3 in a conventional manner following the discharge "of a filled bobbin from the chuck or bobbin head holder I5.

The bobbins which are adapted to be filled with yarn on this particular type of machine, one of which is shown and indicated at It in the drawings, are of a type having a stem I! and a head 20, the head 26 being of substantially greater diameter than the stem l I and the stem and head usually being made o-fa woodm'aterial. The head of the bobbin or quill It has a plurality of closelyspac'ed rings 2| encircling the same across which a strand of yarn Y is adapted to be extended upon this yarn being initially directed to the bobbin I6 from an eye 22 of a conventional oscillating thread guide 23.

It will be noted that the eye 22 of the oscillating thread guide 23 is spaced substantially from the periphery of the bobbin I 6 positioned in the bobbin head holder I5 and the present invention is concerned with improved means for directing the yarn to the bobbin upon the first few turns being applied thereto so as to insure that thestrand of yarn Y will extend across the rings 2I of the bobbin without falling into the spaces therebetween to permit the yarn to be properly engaged by the usual tail cutter or severing means associated with machines of this type. This improved yarn guiding means will be later described in detail.

The oscillating thread guide 23 extends downwardly and outwardly and is suitably secured, as

by a screw 25, to an oscillating crank 25 which is driven by oscillating levers 28 and 29 and conventiona1 means, disposed within a carriage 2? on which the crank arm 26 is pivotally mounted. This carriage 2'! is mounted for longitudinal movement on a carriage shaft 30 which extends in parallel spaced relation to the bobbin I6 positioned in the bobbin head holder I5 and which is disposed in a slightly lower horizontal plane than the bobbin holder I5. This carriage 2'l'also supports a conventional feeler wheel 3I which is adapted to rotate in contact with the periphery of the stem ll of the bobbin I6 as the yarn Y is directed thereto, the feeler Wheel 3| is rotatably mounted in the free end of a feeler wheel arm 32 which also extends downwardly away from the observer in Figure 1 and is pivotally mounted at its lower end, as at 33, on the carriage 27.

Upon a filled bobbin being elected from the bobbin head holder I5 by conventional means, not

shown, and a new bobbin or empty bobbin being 4 the yarn Y extends from the small end of the filled bobbin and is engaged by a lower yarn engaging hook 48 which is often termed a scissors thread guide and which is pivotally mounted on a stud il projecting from a boss or angularly disposed projection 32 extending from the front face of the wall II of the housing Iii. Conventional means, not shown, are usually provided with a machine of this type for swinging the lower yarn engaging hook downwardly substantially below the bobbin head holder I5 so as to engage the yarn at a point between the bobbin head holder i5 and the small end of the previously ejected bobbin substantially as shown in Figures 2 and 3. At this time, a conventional thread catcher finger E3 having a hook portion 44 (Figure 1) is swung about its pivot 55 to also engage the yarn Y at a point between the eye 22 of the oscillating guide 23 and the bobbin head holder IE to thus insurethat the yarn will extend across the front or outer face of the bobbin head-holder I 5 'upon an empty bobbin being directed thereto so that the yarn will be clampingly secured between the head of the bobbin IE5 and the front face of the bobbin head holder I5.

Now, the thread catcher finger 13 is pivoted at $5 in a conventional thread catcher coupling 45 which is fixed on one end of a thread catcher sliding rod 47 snounted for horizontal sliding movement in the housing Hi and which is operated by conventional means, not shown, to move the thread catcher finger outwardly immediately preceding the ejection of abobbin from the bobbin head holder I5 and to then move t-he thread catcher finger "rearwardly or towards the housing Iii from substantially the position shown in Figure 3 to the position shown in Figure 2. t

The thread catcher coupling it has inherent spring means, not shown, normally urging the thread catcher finger 3S inwardly toward the bobbin to where the free end'of the hook '44 will be disposed in substantially the vertical planeof the axis of the bobbin head holder 15. The thread catcher coupling :26 is provided with a projection 48 for a purpose to be described, and the finger 13 has a conventional preiectionwhich abuts a screw 39 suitably secured on the top surface of the spindle'housing I4 upon movement of the sliding rod '57 toward "the housing I-Zl thus causing the thread catcher finger to swing away from the center of the bobbin head holder It to substantially the position shown in Figure 1 with the result that the yarn which has been engaged by the hook portion 34 thereof will be released substantially as shown in Figure '2. At this point, rotation is imparted to the chuck P3 and the corresponding bobbin 15 with the result that the yarn Y is taken up-by the bobbin 1 6 and wound thereon as it is directed thereto from the usual oscillating thread guide 23L Now, the winding machine is provided with a suitable tail cutter which is adaptedto function through conventional means, *not shown, so as-t'o engage the yarn extending across therings 2I of the bobbin f5 immediately prior to the bobbins being ejectedfrom the chuck t5. Theparticular cutter shown in the drawings is that shown and described inmy co-pending application, Serial No. 179,672, filed August 16, 1950; This thread cutter is shown by way of illustration only and not as a part of the present'invention.

The tail cutter is broadly designated at '55 and includes a blade supporting armor member 5 6 oscillatably mounted intermediateitsends thereof as at 5'! (Figure 4) on 'asuitable support bracket 68 suitably secured to the front wall H of the gear housing lil, as by screws 6| This blade supporting member has a blade or cutter 62 suitably secured to the free end thereof and which is suitably grooved so as to form projections 63 which, upon a bobbin being substantially filled with yarn, will be moved by means, not shown, to occupy a position between the rings 21 on the head 20 of the bobbin 16. Since the bobbin I6 is rotating at the same time that the projections 63 on the cutter blade 62 enter between the spaced rings H on the bobbin IS, the yarn extending across the rings will engage the projections to thus be severed or broken away.

It will be'noted, as has already been stated that there is considerable slack in the yarn Y as it is initially directed to the bobbin I6 from the eye 22 of the oscillating thread guide or yarn guide 23.

Referring to Figures 2 and 3, it is evident that the angle at which the yarn is first introduced to the head 20 of the bobbin I6 is such that the yarn may be wound about the head 20 of the bobbin 15 several times before being directed to the stem ll thereof with the result that the yarn may be wound between the rings 2| substantially as shown in Figure 5. Also, in the event the yarn is not wound about the head 20 of the bobbin It several times, the yarn may be so slack as to extend in a relatively short helix loosely disposed across the rings 2| with the result that it will sag between the rings and thus would probably not be engaged by the projections 53 on the thread cutter or tail cutter.

To overcome this difficulty, there is provided an improved means for automatically directing the yarn to a point at the juncture of the head 20 and the stem 11 of the bobbin 16 which will notonly takeup some of the slack in the yarn Y but will also insure that the yarn will be directed more accurately over the head 20 of the bobbin rather than around the head 28 thereof and which will also cause the yarn to extend at an angle relative to the axes of the rings 2| on the head of the bobbin 20 or in a helix of relatively large pitch so that it will traverse the length of the head of the bobbin E6 in approximately onehalf a revolution thereof. In this way, it is not possible for the yarn to fall into all of the gaps between the three rings and, it has been found in, practice that the yarn is always drawn across at least two of the rings to thus be positively engaged by the thread or tail cutter 55.

The improved yarn guide is broadly designated at 65 and is preferably formed of wire material which is circular in cross-section. This improved yarn guide 65, which may also be termed an auxiliary yarn guide, includes a stem 66 which is disposed above and in substantially the vertical plane of the axis of the chuck I5. The rear or inner end of the stem 66 of the auxiliary thread guide 65 is clampingly secured in a forwardly and rearwardly extending legs 61 of a bell crank or lever l'il by means of a clamp plate H which clamps the stem 66 against the upper surface of the arm 6'! by means of screws '32. The bell crank or lever also includes a vertical arm 81a and is oscillatably mounted on a pivot pin 13 which extends laterally and is suitably secured, as by soldering or welding, to a vertically disposed auxiliary yarn guide support plate or bracket 74.

The bracket is substantially L-shaped in crosssection and the vertical leg thereof has an outwardly extending portion integral therewith 6 which is suitably secured to the frame it! of the winder such as'by one of the screws 6| heretofore described which secure the bracket 60 to the frame ll] of the winder. The horizontal leg of the substantially L-shaped bracket 14 has a transverse slot 16 therein which is penetrated by a screw H for securing the bracket 14 to the upper surface of the boss or projection 14. The horizontal leg of the L-shaped bracket 14 has an upturned lip integral therewith which is threadably penetrated by an adjustment screw M which is locked in position by a lock nut 82.

This adjustment screw 8| is positioned for engagement by the vertical leg of the arm 61a of the bell crank H! which is normally urged thereagainst by a tension spring 83 secured at one end'thereof to the upturnedportion 80 of the horizontal leg of the L-shaped bracket 74,- and. having its rear end secured to a laterally extending abutment or end portion 8A or cam integral with the arm B'la of the bell crank 10 (Figures 1 and 4).

The bell crank it is shown as being formed of a single piece of material bent to form the arms 61 and 57a and to the proximate edges of which a plate or bearing member 85 is suitably secured, as by welding, and which serves to retain the bell-crank ill on the shaft 13 provided therefor. This bell crank IE! is shown in the preferred form in the drawings, however, it is understood that it may be made in any suitable manner as from a single piece of material such as cast iron and the like if so desired.

The cam boss projection d8 on the thread catcher coupling 46 is adapted to engage this abutment portion 84 of the arm 61a of the bell crank if! as this coupling 46 along with the thread catcher finger 43 and the thread catcher sliding rod 41 are moved inwardly relative to the housing 29 by conventional means, not shown, immediately preceding the completion of a transfer operation, i. e., the ejecting of a filled bobbin and replacement and filling of an empty bobbin. This causes the bell crank 70 to swing from substantially the position shown in Figure 3 to substantially the positionshown in Figure 2, to thus swing the free end of the auxiliary yarn guide 65 to a position closely adjacent the juncture ofthe head 2i! of the bobbin IS with the stem l1 thereon.

The stem 65 of the auxiliary yarn guide 65 extends forwardly or outwardly from the arm 67 of the bell crank in and since the stem 66 is disposed in the same vertical plane as the axis of the chuckv [5 the stem is bent rearwardly, as at 65, at an angle and is again bent forwardly and extends in parallel relation to the end portion of the stem 65 as at 8B. The parallel portion 86 i reversely bent forwardly upon itself as at 8'1 to form a hook portion or notch 9i] into which the yarn is directed as it is pulled rearwardly or towards the plate H of the housing If; by the thread catcher finger 43 in the manner heretofore described.

In order to insure that the thread or yarn Y will be directed to the notch 90, a guide extension rod 9| is suitably secured, as by welding, to the thread guide 65 at the juncture of the hook por tion 59 and the bent portion 81. Also, to prevent the feeler wheel 3| from engaging the hook portion iii! of the auxiliary yarn thread guide 65, the hook-portion is flattened or cut away as at 92 on the edge, thereof adjacent the feeler wheel 3|.

It will be noted in Figures 2 and 8 that the free end of the auxiliary yarn thread guide 65 is also bent at an angle relative to the horizontal axis of the stem portion 16% thereof so the extension 9'! thereon may be :disposed in a horizontal plane in substantially parallel relation to the axis of a bobbin is positioned in the chuck I when the auxiliary yarn thread guide 65 is lowered into operative position.

It is thus seen that during the period in which filling or yarn Y is being directed to the stem ll of the bobbin iii, the hook or notch 9i of the auxiliary yarn guide 65 will be disposed in an elevated position, which position it will retain during the replacement of the filled bobbin in the chuck 15 with an empty bobbin and immediately following the positioning of an empty bobbin in the chuck it, the thread catcher coupling 45 along with the thread catcher finger d3 moves rearwardly, or inwardly relative to the "housing is, and, in so doing, directs theyarn Y from the eye 22 of the oscillating yarn guide 23 :along the extension 53! of the auxiliary yarn guide 65 to thus enter the notch so. Then, with its continued rearward movement, the projection 48 on the thread catcher coupling 36 engages the cam 84 on the arm Bio of the bell crank ll! to thus swing the bellcrank It! in a clockwise direction from the position shown in Figure 3 to the position shown in Figure 2.

At substantially the same time that the hook at of the auxiliary yarn guide -85 assunres the position shown in Figure 2 immediately adjacent a the juncture of the head and stem of the bobbin it, the thread catcher finger l3 swings transversely by abutting screw 59 to assume substantially the position shown in Figure l to-thus release the yarn Y'from thehook portion 34 thereof substantially as shown'in Figure 2. Simultaneously, upon the release of the yarn Y from the hook portion 64 of the finger d3, rotation is imparted to the spindle l5 and the bobbin it with the result that the tail of yarn between the hook 99 of the auxiliary yarn guide 55 andthe chuck i5 is wound around the head :26 of the bobbinlt. However, since .thehook portion 99 of the auxiliary yarn guide 65 is-posi-tioned adjacent the outer end of the head or at the juncture of the head 20 with the-stem H of the bobbin It, a part of the slack in the yarn Y will be taken upby thishook portion 99-01? the yarn guide 855 and also, the yarn will be directed to the junction point of the head 26 and :stem 1? rather than to the end of the heador the point where the head 21] engages the chuck I5. This will cause the yarn to extend across the rings Ed on the head 20 at a relatively large pitched helical angle substantially as shown in Figure 6 rather than at a relatively short pitched helical angle as has heretofore been frequently done.

When the improved auxiliary yarn guide 65 is employed, the yarn is alwaysvdrawn across at least two of the rings 2! and the yarn therefore is high enough above the head it .of the bobbin 16 so as to be engaged by the projection 63 on the tail cutter 55 as they are moved into operative position in a conventional manner.

The alternative and preferred construction of auxiliary yarn guide '85 shown in Figure 9, the parts or which are identified with the. same reference numbers as corresponding parts of the guide of Figures 1 to 8 but with a prime *afiixed thereto, differs from the guide 65 primarily in that the'notch or hook portion St is formed at the juncture of the extension 9i with the tip portion 92', thus avoiding the reverse curve formed at the bend 81 of the guide of Figures 1 to 8 and reducing parts upon whichslack yarn might catch.

In the drawings and specification there has been set forth a preferred embodiment of the invention and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being defined in the claims.

I claim:

1. In an automatic winding machine having a chuck to which bobbins are successively directed for winding yarn thereon and also having a yarn guide spaced substantially from the bobbin for directing the yarn thereto, an auxiliary yarn guide normally disposed adjacent the first yarn guide and means automatically operable upon a filled bobbin being ejected from the chuck and a succeeding empty. bobbin being received by the chuck for moving the auxiliary yarn guide .to

occupy a position immediately adjacent the head of the bobbin to thus direct the yarn thereto to insure that the yarn will be drawn across the head of the bobbin in a helix of relatively large pitch.

2. In an automatic winding machine having a rotatable chuck for winding yarns on bobbins .and having transfer means for changing the bobbins. in said chuck and also having a yarn guide for directing yarn to a bobbin in the chuck, an auxiliary yarn guide automatically operable during the transferoperation to position the yarn closely adjacent the head of the bobbin placed in the chuck.

3. In an automatic winding machine for winding yarn onto bobbins each having a head and a stem integral with the head but of less diameter than the head and also having a plurality of closely spaced rings encircling said head, said machine having a rotatable chuck for supporting and imparting rotation to a bobbin inserted therein and said machine being provided with means for ejecting filled bobbins and replacing said filled bobbins with empty bobbins and said machine also having an oscillating yarn guide disposed in substantially spaced relation to the periphery of a bobbin positioned in said chuck, an improved auxiliary yarn guide adapted to cooperate with said oscillating yarn guide for directing the yarn to a point closely adjacent the juncture of the head and stem of a bobbin positioned in the chuck to cause the yarn, upon rotation of the bobbin, to extend across the rings or the bobbin and to prevent the yarn from being wound about the head of the bobbin and between said rings.

a. In a winding machine for winding yarn onto bobbins provided with a chuck for receiving the base of a bobbin which has a plurality of spaced rings on its base and said machine having means foriinparting rotation to the bobbinand means spaced substantially from a bobbin disposed in the chuck for traversing the yarn along the bobbin to be deposited thereon, said winding machine also having means automatically operable upon completion of the winding operation for ejecting the filled bobbin and means for extending the yarn across the face of the chuck as it extends from the ejected bobbin to be clampingly engaged by the head of a succeeding bobbin positioned in the chuck and said winding machine also having a frame-and a tail cutter thereon for cutting a tail of yarn extending across the rings of the bobbin, means for insuring correct positioning of the yarn to be out by the tail cutter comprising an improved auxiliary yarn guide cooperating with the means for traversing the yarn along the bobbin and normally occupying a position at a point between said yarn traversing means and the bobbin and closely adjacent said traversing means, means automatically operable upon an empty bobbin being received by the chuck for moving the auxiliary yarn guide toa position closely adjacent the juncture of the head of the stem thereof to position the yarn across said rings, and to prevent the yarn from becoming entangled in said rings.

5. In a structure according to claim 4, said auxiliary yarn guide comprising a bell crank oscillatably supported on the frame of the machine and having a first and a second arm thereon, a stem mounted on an arm of said bell crank and extending in substantially parallel relation to the axis of a bobbin positioned in said chuck and having a hook portion on the free end thereof, spring means normally urging the bell crank in one direction to position the hook of said stem away from said bobbin, said means for extending the yarn across the face of the chuck having means thereon for imparting movement to said bell crank in the opposite direction formoving the hook of said stem to a position adjacent the juncture of the head and stem of the empty bobbin to cause the tail of the yarn extending from the juncture of the head and the chuck to extend across the rings of the bobbin in spaced relation to the head of the bobbin to be engaged by the tail cutter.

6. In an automatic winding machine for winding yarn onto bobbins which have a head and a stem integral with the head and a plurality of closely spaced rings positioned about said head, said machine having a frame and a rotatable chuck for supporting and imparting rotation to a bobbin inserted therein and said machine also having means for ejecting filled bobbins from said chuck and replacing said ejected bobbins with the empty bobbins and also being provided with movable thread catcher means movable into operative position for extending yarn across the face of the chuck to be engaged by the headof the succeeding bobbin being positioned in the chuck, and said machine also having an oscillating yarn guide disposed in substantiallyspaced relation to the periphery of a bobbin positioned in said chuck, an improved auxiliary yarn guide adapted to cooperate with said oscillating yarn guide for directing the yarn to a .point closely adjacent the juncture of the head and stem of a bobbin positioned in the chuck tocause the yarn, upon rotation of the bobbin, to extend across the rings of the bobbin and to prevent the yarn from being wound about the head of the bobbin and between said rings, said frame having a bell crank oscillatably mounted therein, said improved 10 auxiliary yarn guide being mounted on said bell crank and having a stem extending, in spaced substantially parallel relation to the bobbin in the chuck, said stem having a hook portion adapted to receive the yarn and an angular extension for guiding the yarn to the hook portion, and said improved auxiliary yarn guide being operable by the movable thread catcher means.

7. In an automatic winding machine for wind-' ing yarn onto bobbins which have ahead and a stem integral with the head and a plurality of closely spaced rings positioned about said head, said machine having a frame anda rotatable chuck for supporting and imparting rotation to a bobbin inserted therein and said machine also having means for ejecting filled bobbins from saidchuck and replacing said ejected bobbins with empty bobbins and also being provided with movable thread catcher means movable into operative position during the transfer operation for extending yarn across the face of the chuck to be engaged by the head of the succeeding bobbin being positioned in the chuck, and said machine also having an oscillating yarn guide disposed in substantially spaced relation to the periphery of a bobbin positioned in said chuck, an improved auxiliary yarn guide adapted to cooperate with said oscillating yarn guide for directing the yarn to a point closely adjacent the juncture of the head and stem of a bobbin positioned in the chuck to cause the yarn, upon rotation of the bobbin, to extend across the rings of the bobbin and to prevent the yarn from being wound about the head of the bobbin and between said rings and said improved auxiliary yarn guide being operable by the movable thread catcher means, said frame having a bell crank oscillatably mounted therein, said improved auxiliary yarn guide being mounted on said bell crank and having a stem extending in spaced substantially parallel relation to the bobbin in the chuck, said stem having ahook portion adapted to receive the yarn and an angular extension for guiding the yarn to the hook portion, and said movable thread catcher means having a projection thereon for engaging.

said bell crank to operate the auxiliary thread guide during a transfer operation.

JOHN W. lVIAY.

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

UNITED STATES PATENTS

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