US3570777A

US3570777A - Winder and winding method

Info

Publication number: US3570777A
Application number: US753413A
Authority: US
Inventors: Emil J Berger Jr
Original assignee: Turbo Machine Co
Current assignee: Warner and Swasey Co; Turbo Machine Co
Priority date: 1968-08-19
Filing date: 1968-08-19
Publication date: 1971-03-16
Anticipated expiration: 1988-03-16

Abstract

A winder and winding method is provided for forming multiple yarn feeds into multiple packages having tapered ends, each having a yarn guide having a mechanical movement which controllably varies the axial movement of the guide in relation to the diameter of the yarn accumulated in the package.

Description

United States Patent [72] Inventor Emil J. Berger, Jr.

Wayne, Pa.

[21] Appl. No. 753,413

[22] Filed Aug. 19, 1968 [45] Patented Mar. 16, 1971 [73] Assignee Turbo Machine Company Lansdale, Pa.

[5 4] WINDER AND WINDING METHOD 16 Claims, 7 Drawing Figs.

52 US. Cl 242/43.1 [51] Int. Cl B6Sh 54/32, B65h 54/28 [50] Field of Search 242/43.1,

2,004,162 6/1935 Gladding et al 242/43.1- 2,154,847 4/1939 Hill et al. 242/43.1 2,178,263 10/1939 McKean... 242/43.1 2,279,856 4/1942 Artertan 242/43.l 2,292,725 8/1942 Treckmann 242/43.l 2,858,993 11/1958 Siegenthaler.... 242/43.l 3,123,968 3/1964 Flanigan 242/43.1X 3,350,021 10/1967 Marciniak 242/43.1X FOREIGN PATENTS 514,488 10/1952 Belgium 242/43.1 43,973 1/1888 Germany 242/43.l 567,673 2/1945 Great Britain... 242/43.l 856,559 12/1960 Great Britain 242/43.1

Primary ExaminerDonald E. Watkins Attorney-Paul & Paul ABSTRACT: A winder and winding method is provided for forming multiple yarn feeds into multiple packages having tapered ends, each having a yarn guide having a mechanical movement which controllably varies the axial movement of the guide in relation to the diameter of the yarn accumulated in the package.

PATENTEU MARI 6 [9n SHEEI 1 [IF 5 INVENTOR. Emil J. Berger, Jr.

ATTORNEYS.

PATENTEUHARISISYI I 3570.777

sum 2 UF 5 'INVENTOR. Emil J. Berger, Jr.

* WPM ATTORNEYS.

PATENIEDnAmmn Y SHEET 3 BF 5 INVENTOR BY Emil -J. Berger, J:

flay/W ATTORNEYS.

PAIENIED NARI 6 I97! SHEET Q 0F 5 XNVEN-TOR. Emil J. Berger, Jr. P

ATTORNEYS.

PATENTED mu s19?! SHEET 5 OF 5 INVENTOR. Emil J. Berger, Jr.

ATTORNEYS.

WWDER AND WEIDHJG MEOD BACKGROUND OF THE INVENTION It is generally the situation, in the textile industry, that the production of a yarn or fiber strand occurs at a different place than subsequent fabrication such as weaving, knitting or the like. Accordingly, it is commonplace that a particular yarn is made in one location, wound onto bobbins, spools and the like, and shipped to another location where these bobbins are placed in a creel from which the yarns may be unwound for fabrication by weaving, knitting or the like.

In unwinding bobbins from a creel, it is often necessary that the yarn or strand be unwound over an end of the bobbin.

It is also desirable that the winding of yarns onto bobbins be as dense as possible, in order to reduce the bulk of a given weight quantity of yarn. Such a dense winding is generally effected by circumferentially winding the yarns about a bobbin or the like, with each successive yarn winding being disposed closely adjacent the previous winding, until a complete layer of yarn covers the bobbin, and winding back and forth until the desired weight of yarn has been wound onto the bobbin.

If the yarn is wound in a cylindrical configuration, subsequent unwinding over an end of the bobbin sometimes results in multiple yarn windings being dragged over the end of the bobbin simultaneously and in entangled fashion, whereby the'several yarn windings may readily become entangled with each other and perhaps broken. The foregoing problems occur for a variety of reasons, but one outstanding reason is the period of dwell of the guide means of the winder, at the ends of the package. This has been very difficult to eliminate, even with complicated and expensive machines.

Accordingly, it is desirable (particularly in handling low deniers) to form a yarn package having tapered ends, and it is an object of this invention to provide a new machine and method for carrying this into effect.

When multiple positions are provided in a conventional winder, all positions are governed by interconnected 'rnechanisms. If an interruption of the winding procedure should occur at one position while a tapered end portion is being formed, (as by an end of yarn breaking, for example), this interruption would cause a defective tapered portion to be formed. Another object and advantage of this invention is that the formation of the tapered portion can be interrupted at any given winding position without interfering with the quality of the tapered end portion of the final package.

SUMMARY OF THE INVENTION The present invention is directed toward providing a novel multiple-position machine and method for winding yarn to form tapered packages.

Accordingly, it is a primary object of this invention to provide a novel multiple-position machine and method for winding yarn onto bobbins or into like roll formations, wherein the ends of the bobbins or roll formations are tapered, and wherein the formation of tapered end portions at any given position is independent of the other positions.

It is a further object of this invention to provide a novel machine and method for forming packages wherein the yarn windings are closely adjacent to one another but can nevertheless be easily stripped off the ends without tangling.

It is a further object of this invention to provide a novel method for winding yarn into a roll formation having a side contour of trapezoidal configuration, by providing constant traverse speed with minimum dwell at the ends.

Other objects of this invention will be readily apparent to persons skilled in the textile art, from a reading of the following brief descriptions of the drawing figures, detailed descriptions of the preferred embodiments and the appended claims.

It will be apparent throughout this specification that the material referred to as being wound is indicated as being yarn, and that the term yarn is to be construed as encompassing any elongated material normally having a strandlike configuration, or being otherwise windable into a package.

The term package refers to any accumulation of "yarn" which is sufficiently stable physically to permit its transportation from one place to another, whether with or without a central support as in a bobbin or spool, and with or without a cover of any kind. The package illustrated in the drawings and repeatedly referred to throughout the specification has a tapered contour; i.e., provided with one or both tapered ends, but such taper need not be linear, but may be concave or convex, as desired.

IN THE DRAWINGS FIG. 1 is a fragmentary front elevational view of a machine embodying features of this invention, showing two winding fpositions, wherein the various machine components and their interconnection are illustrated for winding a package having tapered ends.

FIG. 2 is an enlarged transverse sectional view taken generally along the line II-II of FIG. 1, wherein many of the elements of the machine are illustrated in end view.

FIG. 3 is an enlarged fragmentary front perspective view of one form of stroke varying mechanism of this invention.

FIG. 4 is a schematic front elevational view of the mechanism illustrated in FIG. 1 and 3, with a traversing lever being illustrated in both full lines and phantom lines, showing two positions it assumes during the winding stage wherein an initial layer of yarn is being applied to each package.

FIG. 5 is a schematic view similar to that of FIG. 4 but wherein the packages are approaching fully wound conditions.

FIG. 6 is a fragmentary front perspective view of an alternative embodiment generally similar to FIG. 3 but wherein a different mechanism is provided for yarn traversing.

FIG. 7 is a schematic front elevational view of the apparatus illustrated in FIG. 6, wherein the operation of the several linkage components is clearly illustrated.

Referring to the drawings in detail, it will be appreciated that while only two winding positions have been shown for the sake of brevity and clarity, a commercial machine is well adapted for many more positions, for example, 10 to 50 or more.

Reference is first made to FIG. 1 wherein there is illustrated a winding machine 10 of this invention, including opposed frame members 11 and 12, of angle iron construction, connected by a generally vertically disposed plate 13, having a forwardly bent lower flange 16 also connecting the angle irons 11 and 12 by any suitable means, such as be weldments, bolts (not shown) or the like.

Shaft supports 15 and 16 are provided, each carrying an associated bearing block 17 or 18 at its lowermost end, each housing antifriction bearing assemblies 20 and 21 which carry a rotatable shaft 22 therebetween. The shaft 22 carries a pair of axially spaced

backup rolls

23 and 24 thereon, mounted for rotation with the shaft 22. The shaft 22 is carried at its leftmost end as viewed in FIG. 1, by a bearing block 25 which is mounted on a bracket 26, carried by and secured to the angle iron 11 by suitable bolts 27.

A similar bracket 28 is also mounted on and carried by the angle iron 11 by means of bolts 30, the bracket 28 having an electrically operated motor and transmission combination 31 secured thereto, with the motor having a rotatable shaft 32 extending therefrom on which is mounted a pulley 33. A pulley 34 is mounted on the leftmost end of the shaft 22, adjacent to the bearing block 25, and the pulleys 33 and 3d are connected by a drive belt 35, whereby operation of the motor and transmission combination 31 provides driving rotation to the backup rolls 23 and 24, in the counterclockwise direction illustrated by the arrow of FIG. 2, with the drive being provided through the shaft 22, pulley 3d, belt 35, pulley 33, shaft 32 and motor and transmission combination 31.

A fixed shaft 36 is mounted on blocks 37 and 38, between the angle irons l1 and 12, and secured thereto by suitable screws 40.

A pair of

yokes

41 and 42 are provided, each having respective

cylindrical base portions

43 and 44 and upwardly extending supporting portions 45 and 46. The

base portions

43 and 44 are independently pivoted on shaft 36. A pair of

rods

47 and 48 are provided, extending upwardly from the respective yoke protruding portions 45 and 46. An additional pairs of

yokes

50 and 51 are respectiveiy carried by the

upstanding rods

47 and 48, with the

yokes

50 and 51 being tightly clamped to the rods 47 and 8 by means of bolts 49. The

yokes

50 and 51 are adjustably positionable along their respective associated

rods

47 and 48, as desired, in a manner which will be apparent hereinafter.

The

yokes

50 and 51 carry, respectively, shaft supports 52 and 53.

The

bobbins

55 and 56 are adapted to be wound with yarn indicated respectively as Y and Y the yarns Y and Y being provided in the form of strands S and S respectively, being guided onto the

respective bobbins

55 and 56 or onto the packages formed thereon by associated

guides

57 and 58, disposed for guiding associated strands S and S toward an associated one of the

bobbins

55 and 56 in a direction generally normai to an associated line of contact between a bobbin and its associated

backup roll

23 or 24.

Thus, with particular reference to FIG. 2, as a strand S is delivered to the bobbin 56, the bobbin 56 is rotated in a clockwise direction by means of pressured contact against the backup roll 24 rotating in a counterclockwise direction. The yarn strand S is wound about the bobbin 56 in a plurality of adjacent windings from one end of the bobbin 56 to the other, in a manner to be described more fully hereinafter, until a complete layer of yarn Y is applied to the bobbin 56. The yarn Y, is then applied in a similar manner in an opposite axial direction relative to the axis of rotation of the bobbin 56 working back toward the original end of the bobbin 56 for applying an additional layer of yarn Y This practice is repeated as layers are applied continuously causing the package on the bobbin 56 to increase in diameter as strands S are applied thereto. This increase in diameter of the package on bobbin 56 is about equal to the increase in diameter of the package on bobbin 55, which is in pressure engagement with its own associated backup roll 23. As both packages increase in diameter, the contacting forces of their respectively associated backup rolls 23 and 24 cause pivoting of the

rods

47 and 48, and their

yokes

41 and 42 carried by their common shaft 36, in a counterclockwise direction as indicated by the arrow at the lower left side of FIG. 2. The

yokes

41 and 42 are pivoted in this counterclockwise direction against the force supplied by independent extension springs 60 connecting each one of the

yokes

41 and 42 with a fixed frame portion 61 of the machine 10, the spring 60 being operative for opposing the counterclockwise pivotal movement of the

yokes

41 and 42, and urging the

bobbins

55 and 56 against their respectively associated backup rolls 23 and 24.

The strand guides 57 and 58 are carried by a U-shaped bracket which is disposed in a substantially horizontal plane, as viewed in FIG. 3, and which is of channel construction, with

channel sidewall portions

63 and 64 .of the central portion 65 of the U-shaped portion 63 extending toward the plate 13, and being mounted for sliding engagement along upper and lower edges of the track 66, to faciiitate back and forth motion of the U-shaped member 62 along the track 66.

A rod 67 is provided, extending between the supports 15 and 16 and secured thereto by associated rod supports 6% and 70 which are clamped to the supports 15 and 16 by means of suitable bolts 71. Opposed legs of the U-shaped guide support 62 are provided with antifriction means 72 and 73 preferably of the ball bushing type for permitting reciprocating motion of the U-shaped member 62 along its supporting rod 67.

A screw 74 is secured to the U-shaped guide support 62 and a link 75 is loosely connected to the guide support 62. by the screw 74 for sliding and pivotal movement between the shank of the screw 74 and an eiongated slotted hole 76 at the upper end of the link 75.

The lowermost end or the link 75 is provided with a pivot connection 77 to a reciprocally movable rod 78. The rod 78 is carried for longitudinally reciprocal movement in a ball bushing 30 or like supporting means carried by the plate 13 at the right end of the machine 10 as viewed in FIG. 10. The leftmost end of the rod 78 is connected to a slider 81 slideably movable within a dovetail slot 82 with the slider 31 carrying at its leftmost end a follower 84. A cardioid or heart-shaped cam 85 is provided, fixedly mounted on a shaft 86 of the motor transmission combination 31, for rotation therewith. A collar 87 is fixedly secured to the rod 78, and has connected thereto one end of a spring 88, the other end of the extension spring 88 being secured to one end of the cylinder 82, such that, as the cardioid cam 85 rotates and is in engagement against the cam follower 84, the rod 78 is reciprocated, being guided at one end by the siider 81 sliding within the dovetail slot 82 and at the opposite end by the ball bushing 8i), each rightward movement of the rod 78 as viewed in FIG. 1 being in opposition to the forces exerted by the extension spring 88 and each leftward movement of the rod 78 as viewed in FIG. 1 being assisted by the forces exerted by the extension spring 88.

It is to be emphasized that the cardioid cam 85 provides uniform velocity movement of the rod 78 which creates uniform velocity movement of the yarn guides 57 and 58, with minimum dwell at opposite ends of the stroke of the cam 8. A uniform velocity of the strand guides 57 and 58 allows the use of low-speed feed, which provides a tight packaging of the yarn onto the

bobbins

55 and 56 with each winding of strands S and S, thereon positioned closely adjacent a previous winding. The desired uniform (low) velocity may be predetermined and preset by appropriately adjusting the transmission portion of the motor transmission combination 31.

An additional guiding device is provided for the rod 78 intermediate of its ends in the form of an idler pulley 90 having a channel 91 for receiving the rod 78 therein, the pulley 90 being secured to the plate 13 by means of a suitable screwtype fastener 92 or the like.

The link 75 is pivotal about a screw 93, extending through a slotted hole 94 in the link such that rightward movement of the rod 78 as viewed in FIG. 1 is transformed into leftward movement of the guide support 62, and the converse.

As been set forth above, it is desirable in connection with this invention to decrease automatically the length of the stroke of the strand guides 57 and 58 in response to the accumulation of yarn on the packages. Accordingly, the abovementioned pivotal movement of the

yokes

41 and 42 in response to increasing diameter of the packages is utilized to decrease gradually the length of the reciprocating stroke of the guide support 62 by gradually raising the center of pivoting of the link 75 relative to the screw 93 as the

yokes

41 and 42 are pivoted in a counterclockwise direction as viewed in FIG. 2 or as the packages on the

bobbins

55 and 56 increase in diameter. This is operative to increase gradually the length of the lever portion of the link 75 lying between the pivot screw 93 and the lower pivot 77, and to decrease gradually the length of the lever portion of the link 75 lying between the pivot screw 93 and the upper pivot 74.

The pivot screw 93 is fixedly engaged within a sliding block 95 which is vertically slidable within a dovetail siot 96 of an associated block support 97 carried by the plate 13 by means of screws 9 or the like.

A flexible connection 100, such as string, wire chain or the like is secured at one end to the pivot screw 93 and passes upwardly outside of the dovetail slot 96 of the block support 97 around a pulley 101 carried by the plate 13 and vertically downwardly, passing through a slot 102 in the forwardly extending flange 14 of the plate 13, being secured at its other end to a weight 103 by means of a suitable connection device 104. Thus, the weight 103 provides an upwardly biasing effect on the pivot screw 93, the pivot screw 93 being guided for vertical movement by means of the guide block 95 and its as sociated block support 97.

The pivot screw 93 is prevented from complete vertical upward movement by means of a stop bar 105 traversing the upward path of travel of the screw 93.

The stop bar 105 is pivotally secured at its leftmost end by means of a pivot pin 106 in engagement with the plate 13. A lug 1117 is carried by and protrudes outwardly from the stop bar W5 between the pivot pin 1% and the pivot screw 93 with the lug 107 having a flexible connection 108 such as string, wire or the like secured thereto, the flexible connection 108 extending downwardly through a slot 110 in the plate flange 13 to 2 lug 111 carried by a bracket 112 which is secured to the cylindrical portion 43 of the yoke 41 by means of screws 113. Thus, the upward movement of the pivot screw 93 is normally blocked by the stop bar 105, but as the packages on the

bobbins

55 and 56 increase in diameter and permit increased pivotal movement of the

yokes

41 and 42 in a counterclockwise direction as viewed in FIG. 2 the bracket 112 is in turn, pivoted such that its extreme outward end 111 is moved upwardly thereby permitting a slight upward movement of the lug lll 7 of the stop bar 105 which is magnified at the free end of the stop bar 105 to permit an equivalent upward movement of the pivot screw 93 which is operative to shorten the reciprocating stroke of the strand guides 57 and 58 in the manner aforesaid.

With particular reference to FIG. 4, there is illustrated a typical stroke for the link 75, at the commencement of winding yarns ll and Y onto a pair of

bobbins

55 and 56. It will be noted that the pivot screw 33 is in a lowermost position relative to the elongated slotted hole 94 and that the pivot screw 74 is in an uppermost position relative to its associated slotted hole 76. Also, the guide block 94 is in a lowermost position at the lower end of the slotted hole 96 of the guide support 97. It can readily be seen that at the commencement of winding strands of yarns Y and Y onto

bobbins

55 and 56 the uppermost end of the link 75, and consequently the U-shaped bracket 62 which carries strand guides 57 and 58 undergoes a substantial stroke or horizontal movement between the fullline positions illustrated for the link 75, support 62 and guides 57 and 58 and their phantom-line positions also illustrated in FIG. Q.

As the winding of strands of yarn Y and Y onto respectively associated

bobbins

55 and 56 approaches completion, typical positions of those members which undergo changes in horizontal stroke are illustrated as being substantially shorter than indicated in FIG. 4. Particular reference is made in this regard to FIG. 5, wherein the pivot screw 93 is illustrated as being in an uppermost position of the slotted hole 9 3 with the block 95 engaged within an upper portion of the slotted hole 96 of the guide support 97 and with the pivot screw 94 engaged within a substantially lower portion of the slotted hole 76 of the link 75, than illustrated in FIG. 4, while the stroke of the lower most pivotal portion 77 of the link 75 remains substantially constant 50 the two states illustrated in FIGS. 4 and 5. it will be noted that in the illustration 39 18 28 33 stop bar W5 is in an uppermost position as required by the increased diameter of the

bobbins

55 and 56.

It will be noted that the ends of each of the

bobbins

55 and 56, particularly as viewed in FIG. 5, are tapered to be of generally trapezoidal configuration as viewed in FIG. 5. This is due to the fact that, while an increase in diameter of the packages on

bobbins

55 and 56 is a linear increase, this linear increase is transformed to decrewe the stroke of back and forth movement of the strand guides 57 and 58 in a linear relationship. However, various structural modifications may be made, which result in the linear increase in diameter of the packages being transformed into a nonlinear change in stroke of the strand guides 57 and 58, for example, by making the slotted hole 94 of the link 95 of arcuate configuration. Thus, various other package end configurations, as viewed by looking in the direction of the arrow 116 in FIG. 5, may be effected.

Referring now to FIGS. 6 and 7, there is illustrated an alternative linkage arrangement for shortening the stroke of the strand guides with increasing package diameter, comprising a connection plate 120, generally similar to that identified as 13 of the embodiment of FIG. 1, to which there is secured a slide bar 121 having a U-shaped slider 122 mounted thereon for carrying strand guides (not shown), the U-shaped support 122 also being provided with a rod and ball bushing arrangement (not shown) for facilitating the support thereof.

A pivot screw 123 is fixedly secured'to the support 122 and a link 124 is carried thereby, with the pivot screw 123 extending through a longitudinally slotted hole 125 at an upper end of the pivot link 124. The lowermost end of the pivot link 124 is provided with a pivot connection 126 for attaching the lowermost end of the pivot link 124 to a reciprocally movable rod 127, generally similar to and driven in a similar manner to the rod 73. An intermediate slotted hole 128 is provided in the link 124, in which there is received a pivot screw 130 extending therethrough, the pivot screw 130 being secured to an L- shaped guide member 131. The L-shaped guide 131 is adapted for vertically upward and downward movement for altering the position of the pivot screw 130 within its associated slotted hole 128, and for consequently shortening the reciprocating stroke of the guide support 122 as the pivot screw 130 moves upwardly through the slotted hole 128.

The L-shaped member 131 includes a vertical pusher 132 and horizontal pusher 133. The vertical pusher 132 is captively secured within three

rotatable pulleys

134, 135 and 136 for vertical movement only. The leftmost end of the vertical portion 133 of the L-shaped member 131 is provided with a stud 137 extending therefrom which is internally threaded for receiving therein a piece of threaded stock 138 or the like, the stock 138 being operative as a linkage connection between the L-shaped member 131 and a link 140. The link 1410 is pivotally secured to the plate 120 by means of a pivot screw 141 extending therethrough and in engagement with the plate 120. The threaded stock 138 is engaged within a pivot connection 142 which is secured to the link for pivotal movement. A pivotal connection 143 is also provided on the link 140 between the pivot screw 141 and the pivot connection 142 and receives therein one end of a threadedly adjustable connecting link 144, the other or lowermost end of the link 144 being engaged within a pivot connection 145 of a link support 146. The link support 146 is carried by a yoke 147 which is mounted for counterclockwise pivotal movement with its shaft 148, against the force of a spring 150 as package diameter increases in the manner of the embodiment set forth above.

Consequently, the mechanism of FIGS. 6 and 7 is operative generally similar to the mechanism illustrated in FIG. 3, such that, upon counterclockwise pivotal movement of the yoke 147, caused by bobbin diameter increasing and being driven counterclockwise due to package pressure against an associated package backup roll, the support 146 is pivoted for vertical upward movement of it is extreme outer end 145, which pivots the link 140 in a counter clockwise direction, such pivotal movement being amplified at the pivot connection 142 of the link 1411, and transmitted as vertically upward linear movement to the L-shpaed guide 131 which causes vertically upward linear movement of the pivot screw 130 within the slot 128 of the link 124, thereby shortening the stroke of the guide support 122 in the manner discussed above.

By varying the angular and lever arm length relationship of link Mil, one can control the shape of the tapered portion of the package, thus making it concave or convex and even S- shaped (partly concave and partly convex).

It has been found that the mechanism embodied in FIGS. 6 and 7 provides a particularly positive transmission of strokeshortening forces and movements and consequently can produce a very tightly wound and desirably configured package.

It will be understood that, where a cardioid cam is used, the shape of the traverse portion of the package can be controlled by varying the shape of the cardioid cam. For example, a football-shaped central portion with tapered ends can be created by broadening the side to side dimension of the heart, for example, (d)(d) in FIG. 1. A package having a concave central portion can, conversely, be created by narrowing the dimension (d)-(d) of the heart. This is an advantage because it provides for the production of packages of different sizes and shapes at will.

It will be understood that specific embodiments of the invention have been illustrated in the drawings and specifically described in the specification and that various modifications may be made in the details of construction, use and operation of this invention and in the type of material to which this invention is adaptable, without departing from the spirit and scope of the invention. For example, parts may be reversed, equivalents may be substituted, and certain features may be used independently of others, all without departing from the scope of the invention as defined in the appended claims.

I claim:

1. Apparatus for winding yarn into packages having tapered ends, comprising a plurality of separate, rotatable winding means for winding said yarn, guide means independent of said winding means, for guiding yarn onto associated said separate winding means, means for shifting said guide means and said winding means in a reciprocating path relative to each other, and independent varying means for independently varying said relative axial movement for each separate winding means in response to the accumulation of yarn on associated said packages.

2. The apparatus defined in claim 1, wherein said varying means includes an adjustable mechanical linkage for varying the distribution of speed of movement of said guide means in said relative axial movement.

3. The apparatus defined in claim 1, wherein means are provided for controlling said relative shifting movement to a constant speed in each direction in said reciprocating path and means for substantially instantaneously reversing said shifting movement at each end of said reciprocating path.

4. The apparatus defined in claim 3, wherein said winding means is axially fixed and said yarn guiding means is axially movable.

5. The apparatus defined in claim 1, wherein said guiding means includes a guide, a guide carrier member, a means for reciprocating said carrier member to wind layers of yarn in a simple back and forth motion of said guide carrier member, and wherein said varying means includes means for continually incrementally reducing the stroke length of said carrier member with increasing diameter of yarn being wound.

6. The apparatus defined in claim 5, wherein said reciprocating means includes a mechanism for providing said carrier member with a constant velocity throughout its back and forth traversal movement.

7. The apparatus defined in claim 6, wherein said mechanism includes a cardioid cam and associated driving element connecting said cam and carrier member.

8. The apparatus defined in claim- 5, wherein said reciprocating means includes a lever pivotally connected at one end to said carrier member, and connected at its other end to a reciprocable drive mechanism, said lever member having intermediate pivot means between its ends; wherein said reducing means includes means for adjusting the location of said intermediate pivot means between ends of said lever member.

9. The apparatus defined in claim 8, wherein said lever member has an elongated slotted hole between its ends with a screwlike member extending through said slotted hole for providing said intermediate pivot means.

10. The apparatus defined in claim 9, wherein said adjusting means includes a support carrying said screwlike member for movement of said screwlike member along said elongated slotted hole, said support being mounted in guide means and adjustably positionable by said reducing means.

11. The apparatus defined in claim 1, wherein said winding means comprises a rotatable shaft pivotally carried eccentrically of a pivot shaft by a spacer member, a backup roll for continuous enga ement against an outer surface ortion of a roll formation an urging increased pivoting of sai roll forma tion about said pivot shaft away fromsaid backup roll as the roll formation increases in diameter, said varying means being operatively connected to and actuated by pivotal movement of said spacer member on said pivot shaft.

12. The apparatus defined in claim 10, wherein means are provided for urging said support toward one end of said slotted hole, and stop means are provided as part of said adjusting means, said stop means comprising a bar for limiting the travel of said screwlike member in the direction urged by said urging means, including means comprising part of said reducing means for controlling the position of said bar in response to increasing roll diameter.

13. The apparatus defined in claim 10, wherein said reducing means includes means carrying said winding means for pivotal movement of said winding means as a roll being wound increases in diameter, including linkage means connecting said support with said carrying means for moving said support in response to pivotal movement of said carrying means.

14. A method of winding multiple yarn ends into multiple packages each having a tapered end, comprising the steps of winding said yarn ends about independent rotating supports, guiding the yarn to traverse the packages axially in a reciprocating path, and for each package carrying support independently reducing the stroke length of said yarn traverse in response to increase of package size.

15. The method defined in claim 14, wherein said guiding means is driven at an essentially constant speed and at the same speed in each direction in said reciprocating path, and is substantially instantaneously reversed at each end of said path.

16. The apparatus of claim 1, wherein each winding means and guide means comprises a given yam winding station or position with each winding means comprising commonly driven multiple yarn carriers for the winding of yarn thereon and with each guide means comprising multiple guide members fixedly positioned relative to each other for concurrently guiding yarn to the carrier members, with said winding means and said guide means at each station or position being operative to wind yarn onto carriers by relative movement therebetween independent of the operation of any other stations or positions.

W105) UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent Nm 3,570,777 Dated March 16, I971 Inventor(s) EMIL J. BERGER, JR.

It; is certified that error appears in the above-identified patent and that: said Letters Patent are hereby corrected as shown below:

051. 3 l ine 6 after "addirional" delete "pairs" and insert --pair-- I Col'. 5, line 53 after "constant" delete "50 and insert --throughou t-- Col. 5, line 54 after "illustration" delete "3 9 18 28 33" and insert o f Fig 5, the-- Col 6, line 56 after "L-" change "shpaed" to I -'-shaped--.

' Signed and sealed this .1 0th day of Augiist 1971 (SEAL) Attest:

EDWARD M.FLETcHER-,JR. WILLIAM E. SCHUYLEB, Attesting Officer Commissioner. of Fate

Claims

8. The apparatus defined in claim 5, wherein said reciprocating means includes a lever pivotally connected at one end to said carrier member, and connected at its other end to a reciprocable drive mechanism, said lever member having intermediate pivot means between its ends; wherein said reducing means includes means for adjusting the location of said intermediate pivot means between ends of said lever member.

11. The apparatus defined in claim 1, wherein said winding means comprises a rotatable shaft pivotally carried eccentrically of a pivot shaft by a spacer member, a backup roll for continuous engagement against an outer surface portion of a roll formation and urging increased pivoting of said roll formation about said pivot shaft away from said backup roll as the roll formation increases in diameter, said varying means being operatively connected to and actuated by pivotal movement of said spacer member on said pivot shaft.

16. The apparatus of claim 1, wherein each winding means and guide means comprises a given yarn winding station or position with each winding means comprising commonly driven multiple yarn carriers for the winding of yarn thereon and with each guide means comprising multiple guide members fixedly positioned relative to each other for concurrently guiding yarn to the carrier members, with said winding means and said guide means at each station or position being operative to wind yarn onto carriers by relative movement therebetween independent of the operation of any other stations or positions.