US2365434A

US2365434A - Traversing means for winding machines

Info

Publication number: US2365434A
Application number: US212674A
Authority: US
Inventors: Reiners Wilhelm; Kahlisch Gustav; Furst Stefan
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-07-01
Filing date: 1938-06-09
Publication date: 1944-12-19
Anticipated expiration: 1961-12-19
Also published as: NL48879C

Description

Dec. 19, 1944. w, NE r 2,365,434

' TRAVERSING MEANS FOR WINDING MACHINES Filed June 9, .1938 5 Sheets-Sheet 1 Fig. 1.

Fig. 2.

A s WIL|NXE 855,25 Gus v AHLISCH STEFAN FURST ATTORNEYS Dec. 19, 1944. l E Em 2,365,434

TRAVERSING MEANS FOR WINDING MACHINES Filed June 9, 1938 3 Sheets-Sheet 2 TEFAN FURST 22 ATTORNEYS Dec. 19, 1944. v w EINERS ETAL 2,365,434

TRAVERSING MEANS FbR WINDING MACHINES Filed June 9, 1938 3 Sheets-Sheet s s usTAv K HLISCH TEFAN R9257 A ATTORNEYS v Patented Dec. 19, 1944 Wilhelm Reiners, Gladbach-Rheydt, Gustav Kahlisch, Rheydt, and Stefan Fiirst, Gladbaoh- Rheydt, Germany; vested in the Alien Property Custodian Application June 9, 1938, Serial No. 212,674 Germany July 1, 1937 12 Claims. (01. 242-43) Thisvinvention relates to means for winding yarn, thread, wire or similar strand materials and refers more particularly to machines for winding yarn into cops, cones, coils, packages, or the like, the strands of which extend crosswise or in helical coils.

.Cops and packages of this .type are now made on quickly rotating machines by traverse-rolls or drums which serve as the means for guiding the yarn or other strand material. The yarn supplied to these rolls is guided by them and is wound in the form of packages which are usually roltlated by frictional engagement wtih the same ro s.

The point of contact between the yarn and the roll is usually situated substantially in a middle plane intersecting at right angles to the axis of the traverse-roll, and, therefore, it was found necessary to use additional guiding means for the yarn, in order to cause it to move alternatively to the right and to the left of the middle plane. It was customary to use separate thread guides for that purpose, which carry out a rotary reciproeating or oscillating movement, and/or to provide special guiding grooves r slots in the traverse-rolls.

An object of the present invention is to simplify the making of cops, cones, or packages by providing a traverse roll or drum having inclined surfaces which are so arranged that they suffice to cause the yarn or other strand to move in one direction from its middle position and to Wind itself upon the cone or package in the form of a helix of predetermined length, whereupon certain additional guiding means are used for the purpose of causing the yarn to reverse the 'direc tion of its movement and to return back into its original position.

Another object of the present invention is to utilize the discovery that inwinding machines angle of inclination in a direction toward the wider end of the cone causes larger amounts or yarn to be wound at that end and thereby furthers the formation of the cone.

A still further object of'the present invention is to provide an automatic balancing of the yarn tension which is accomplished by using a thread guide to stretch the yarn in a direction which is incylined toward the wider end of the cone, so that the yarn while being wound upon the wider portion of the cone, has not only the greatest speed but is .also subjected to the smallest possiyarn are smaller at that time.

Still another object of the present invention is the provision of a single machine by means of which the cones can be so wound that their wider sides are situated upon any one of the two sides of the machine.

In priorart traverse-rolls were often used in. pairs, the grooves of the second roll causing the return movement of the yarn. Such constructions eliminate the necessity of providing intererating means for automatically causing a return known in prior art the thread has the tendency to move back into the middle plane of the winding as soon salt is free to do so, said discovery being made use of by means of a device which,

theoretically, causes the shifting of this middle surface to which the yarn tends to move, toward one end or the winding. thus providing means for automatically returning the yarn to an original position' from which it has been moved by the traverse-roll.

A further object is toimprove the wlnding of cones by causing the yarn returning to said original position to be wound in the :form of a helix having a slightly diminishing angle of inclinetion, due to the fact that this diminution of the movement of the yarn.

The above and other objects of the present invention may be realized by means of a 'construction which, in its broadest aspect, comprises the combination of means for moving the yarn inone direction and for causingit to return to it original position. In accordance wth some of the embodiments of the invention, such means comprise the combination of atraverse-roll having a groove or slot moving the yarn in one direction; with a thread guide which constitutes the means for automatically moving the yarn backwards and which is situated outside of the space limited by planes extending through the side surfaces of the traverse rolls; the groove or. slot upon the traverse-roll is, preferably, a helical one; the inclination of the helix corresponding to the direction of the winding of the thread upon the roll, in the case of a free rearward movement of the thread upon that roll.

The groove or slot upon the traverse-roll should extend in one'direction and not intersect any other groove or slot; preferably, one end-of the groove or slot should be connected with a special feed groove or slot while the opposite end of the guiding groove or slot is connected with a separate groove or slot for reversing the inclinatin of the yarn.

Furthermore, in accordance with the present invention, the feed groove or slot and the adjacent portion of the helical guide are widened and are provided with an inclined surface or slot for the purpose of catching the yarn. By means of this arrangement which can be used in combination with a separate abutment limiting the extent of the movement of the yarn, the latter is automatically guided into the groove or slot of the traverse-roll.

When the yarn is being wound in the form of cones, as is customary nowadays, the thread guide determining the inclination of the yarn, is, preferably, situated at the side of the widest end of the cone.

Machines manufactured in accordance with the present invention, may be advantageously employed for the purpose of winding not only cones,

but cylindrical packages as well. In that case, however, it is necessary that the inclination of the helical groove or slot should diminish to the same extent to which the inclination of the yarn is diminished in the course of its return move-= ment, the helix determining the inclination of the yarn being its path upon the smooth surface of the traverse-roll in the course of its return movement. By this arrangement the changes in the inclination. of the helically wound thread balance each other in the course of the back-andfourth movement of the yarn, with the result that the yarn is wound in uniform and evenly distributed layers in the form of a cylindrical package. The tension of the yarn may be balanced automatically in that case particularly at the time when the angle of inclination of the yarn and, therefore its tension are diminished, through the provision of additional immovable or movable projections which increase correspondingly the friction of the stretched yarn as soon as the angle of inclination of the yarn is diminished. Due to this arrangement, the differences in the yarn tension are also automatically balanced in the course of the winding of cylindrical packa es.

In order to be able to use the same traverse roll In certain embodiments of the present invention, the device by means of which the yarn is maintained in its position, is caused to carry out a, reciprocatory movement and is caused to change its inclination at the time it changes the direction of its movement, it comprises a bendable supporting surface carrying a number of thread guides, and passing a plurality of spools, although it is also possible to mount separately a thread guide for each spindle or spool and cause this guide to carry out a turning motion the groove which guides the thread is provided with cutout portions of smaller depth at those.

places at which the yarn should begin its return movement. In order that the yarn should be compelled to start its return movement at one particular cut-out portion, special means are provided for the purpose of covering the deeper adjacent portions of the guiding groove.

In order to wind cones the wide end of which is situated upon any one of the two sides of one and the same machine, the thread guide which determines the inclination of the yarn is made movable in the direction of the axis of the traverse-roll. The original spool from which the yarn is unwound may be made movable along with the thread guide. Through this arrangement, the yarn is alwaysmaintained in an inclined position, the direction of which is toward the wider end of the cone.

in the same direction. Whenever such constructions are used, the yarn may be returned automatically to its original position merely by a reversal of the direction of'movement of a thread guide.

The invention will appear more clearly from the following detailed description when taken in connection with the accompanying drawings showing by way of example preferred embodiments of the inventive idea.

In the drawings:

Figure 1 shows a device constructed in accordance with the principles of the present invention in front elevation;

Figure 2 is a side elevation of. the device shown in Figure 1;

Figures 3 to 6 are detail views showing the yarn in various positions upon the traverse-roll;

Figure-'7 shows a grooved traverse-roll cooperating with an immovable friction regulator;

Figure 8 is somewhat similar to Figure 7, but shows a movable friction regulator;

Figure 9 shows a traverse roll provided with means for winding packages of different lengths;

Figure 10 is a section along the lin Ill-46 of Figure 9;

Figure 11 shows a, traverse-roll provided withv Figures 1 and 2 of the drawings show a spool 20, consisting of a support 2! upon which the thread 22 is wound. A winding device constructed in accordance with the principles of the present invention is used for unwinding it in the form of a helical or cross-winding upon a bobbin 23,

' which has the form of a support 24 carried by a shaft 25 and rotatable along with the shaft.

The shaft 25 is rotatably mounted upon one end of a pair of arms 26, the opposite ends of which are pivotally mounted at 21 upon a frame 28. The frame 28 may be immovable or may be mounted upon rails in the usual manner (not shown).

As shown in the drawings, the bobbin 23 is in frictional contact with the traverse-roll 30, so that it may be rotated by that roll. Due to the provision of swingable arms 26, the bobbin 23 is always in engagement with the roll 30, while the yarn is being wound upon the bobbin. The traverse-roll 30 is firmly connected with a shaft 3|, which is mounted upon projections or supports 32 of the frame 28. The shaft 3!, which is firmly connected with the roll 30, is driven by any suitable mechanism not shown the drawings.

Obviously, severa1 spools 20 and traverse-rolls 30 may be situated side by side in the plant, and

left and reaches the end 35 of the groove 34.

the rolls 30 may be mounted upon the same driving shaft 3! or upon separate shafts.

In accordance with the present invention, the spool 20 and the thread guide 29 which stretches the yarn 22, are situated to the right of a vertical plane passing through the middle of the roll 39 and indicated diagrammatically by the letters :c-a: in Figure 1 (looking in the direction of Figure 1). Furthermore, it is preferable and even advisable to arrange the spool 20 and the thread guide 29 in such manner that they are situated to the right of a plane passing through the right hand side surface of the bobbin 23, said plane being indicated diagrammatically by the letters i1t" in Figure 1.

According to another definition, the spool to and particularly the thread guide 29 should be located outside of the space which is limited by two planes passing through the two side surfaces of the traverse r011 3t. These two planes are diagrammatically indicated in Figure l. by the lines u-u and -12. It has been found that when the thread guide is disposed in this manner, the yarn 22 will as= sume the most advantageous angle of incline tion and may be easily and conveniently wound upon the bobbin 23 without the necessity of using any oscillating guiding means or traverse rolls of a complicated form.

A rod or abutment 33 is carried by the frame to and is used for the purpose of limiting the movement of that portion of the yarn 22 which is close to the traverse roll 30, toward the right. The abutment 33 is preferably situated under-= neath the traverse roll it and close to the surface o-v passing through the right-hand side surface of the roll it.

The traverse roll to is provided with a groove ti extending in the form of a single uninterruptedand unintersected helix substantially from one side surface of the roll it to the opposite end. The left-hand end portion $5 of the helical groove it is in communication with a short groove extending in an opposite direction to the groove it and constituting a means for reversing the direction or inclination and of movement ofthe thread 22.

I The opposite end ill of the helical groove is in communication with another short groove to, which extends in substantially the same direc.. tion as the reversing groove 36 and which may be designated as the receiving groove. The two grooves 3t and 3b are comparatively short, they do not have the form of a helix and in no way approach or intersect the helical groove Due to the fact that the groove or'cavity extends at an angle to the helical groove and its end portion 5W, 9. projection or abutment is formed, one edge of which is leveled on? to provide an inclined surface to constituting one of the surfaces of the end portion t'l of the groove to and serving the purpose of receiving the thread 22.

Due to this arrangement, the grooves formed upon the roll tileasily receive the thread it! and; hold it securely, and the direction in which the thread iii" extends can be changed easily d con This end position at which the yarn 22 is shifted from the end portion 35 .of the helical groove 34 into the groove 36 and begins its return movement, is illustrated in Figure 3.

Due to the location of the thread guide 29 to the right of the traverse-roll 30, the guide 29 causes the yarn 22 to assume an inclined position upon the roll to and'pulls it out of the grooves, whereupon the yarn will carry out its return movement upon the smooth surfaces of the roll. After the roll has been rotated twice the yarn 22 will have the position shown in Figure 4, the path of the yarn upon the smooth surfaces of the traverse-roll til being shown by broken lines in Figures 4 and 5.

Then after one. more revolution of the traverse- .roll to the yarn will reach the right-hand end of the roll thus completing its return movement and will then be caught in the groove 36. The rod 33 which limits the movement of the yarn to the right, will change the direction of the yarn as soon as it is in contact with it and will facilitate the insertion of the yarn into the groove 38. This position is shown in Figure 5. Then the yarn is guided again in the groove 34 and is caused by that groove to move toward the left, Figure 6 showing the yarn in the course of its forward movement after the traverse-roll has completed two revolutions.

It will be noted that the position of the thread guide 29, which determines the direction in which i the yarn 22 extends, 'forces'it to be wound all veniently even though the roll to may be driven at a high speed.

The manner in which the thread hit is guided by the traverse-roll to is indicated in figures l and 3 to 6 of the drawings. The yam engages the end ill? of the helical groove t t and is guided by this groove, as shown in Figure 1, until it completes its movement from right to helically upon the winding 23 in the course ofthe return movement of the yarn. The helical line which represents the path of the yarn 22 upon the smooth surfaces of the traverse-roll 30, has a pitch or angle of inclination which diminishes somewhat toward the right-hand end of the roll lit.

Therefore, due to the described cooperation of the helical groove it which moves the yarn in one direction and the thread guide 29 which due to its position, pulls the thread in a differout direction as soon as it leaves the groove 36, the. yarn is wound in substantially uniform cross windings which result in the formation of a cone 23. i

This arrangement may be advantageously used for the purpose of winding cylindrical packages to, illustrated in Figures 7 and 8. In order to wind the yarn 22 in the form of a cylindrical package, it is necessary to provide a traverse roll iii having a helical groove 52 the angle of inclination of which diminishes in the direction away from the thread guide at, for example, in the constructions shown in Figures 7 and 8, toward the left side of the traverse-roll.

The winding of cylindrical packages as compared to the winding of cones, has the disadvam tagethat in the course of the former the diflermaking oi cones, due to the inclined position of the yarn in the cburse of the winding. Therefore, when wing cylindrical packages, it was found desirable to provide a second thread guide [it which is situated closely to the thread guide in the position shown in Figure 'Land which cooperams with the thread guide at for the purpose of balancing the thread tension.

This balancing is attained by the two thread I guides at and fit du to the fact that the yarn is eubiecmd to greater frictional forces when it is by the length of the comprises grooves 8i,

' able mechanism, mechanism being substantially similar to those The device shown in Figure 8 comprises a traverse-roll 6| which may be used for the purpose of winding a cylindrical package 50. The traverseroll is rotatable along with the shaft 60 which carries a worm 62.

The yarn 22 is guided by two immovable thread guides 63 and 64 and a movable thread guide 65 which comprises a projection or rod 66 mounted upon one end of a double-armed lever bl which is rotatably mounted upon a pivot 68 carried by a support 69. The opposite end of the lever 6'! is pivotally connected at H! with a rod H which is eccentrically mounted at 72 upon a toothed wheel 13 meshing with the worm 62. The gear wheel 13 is rotatably mounted upon a support is which may be integral with the support for the shaft 60;

The yarn 22 usually is engaged by the thread guides 63 and 84 while the action of the mov able thread guide 66 upon the yarn 22 is an intermittent one. The worm t2 which rotates along with the shaft Sit of the roll ti reciprocates the rod ll'carried by the gear i3, thereby swinging the double-armed lever bl around its pivot 68. In the course of this-oscillating movement the thread guide t6 engages the yarn 22 mg upon the position of the traverse roll iii in the course of its rotation.

The device is set in such manner that the and then recedesagain, this movement dependmovable thread guide t6 exerts its greatest fric-' tional force upon the yarn 22 at a time when the thread has its smallest inclination, namely, when it is at its right-hand position which is indicated in Figure 8. On the other hand with the movement of the yarn toward the left and with the increase of the angle of inclination of the yarn, the movable guide 66 gradually recedes until it is practically or entirely out of contact with the yarn at a time of the latters greatest inclination, namely, when it is at the left end of the traverse-roll.

Figures 9 and 10 illustrate a device by means of which it is possible to vary the length of the winding. In the constructions illustrated in Figures l to 8, the length of the conical winding 23 or of the cylindrical package 50 is determined traverse-roll, so that whenever a package of a different length is desired it is necessary to use a different traverse-roll. On the other hand, by means of the construction shown in Figures 9 and 10, it is possible to wind packages of different lengths by means of the same traverse-roll;

The traverse-roll 80 shown in Figures 9 and

V

82 and 83 which are substantially similar to the grooves of previously described traverse-rolls. The roll is mounted upon a'shaft 84 which is rotated by any suitthe other details of the winding described. In accordance withthe present in! vention, a portion of the wall 85 groove 8! is planed oif, thus providing a some what flattened surface 86 which terminate: in a raised fiat projection 81. The projection till is situated at a point at which the direction of the yarn 22 may be reversed whenever it is decided to wind a package 88 which is shorter than the normal length of the roll.

As is shown in Figure 10, the yarn 22 is not affected by the projection 81 and is not caused to reverse its movement so long as it is situated at the bottom of the groove 8i.

However, in accordance with the present invention, the yarn 22 may be raised from the bottom of the groove 8i by means of a rodiid which may be inserted into a suitable opening or bore hole which extends parallel to the shaft 8% across one or more windings of the helical groove 86,

Whenever the rod 89 is situated within its opening, the yarn 22 is raised from the bottom of the groove BI and caused to engage the projection Bl, thereby slipping out of the groove 8! and reversing its direction.

Due to this arrangement, simple and effective means are provided for the purposeof limiting the length of the package. Obviously, any.

ever, such rolls may be conveniently substituted by hollow rolls, one of which is illustrated in Figure 11 of the drawings. ure 11 is hollow and comprises an outer casing 9! having a helical slot 92 extending from one side of the casing to the other and functioning in substantially the samemanner as the groove 36 of the traverse-roll tll shown in Figure 1.

One end of the helical slot 92 is in communication with a short reversing slot 93 while the opposite end of the slot 92 is in communication with a wider receiving slot 94. The two slots 93 and 9d operate in substantially the same manner as the

grooves

36 and 38 of the roll 38 (Figure 1) The roll 9G is also provided with a hook-shaped projection 95 which is situated close to the point of juncture of the slots at and 82. A catching slot or recess 96 is provided close to the projection 95 and is used for the same purpose as the inclined surface 40 (Figure 1), namely, for the purpose of receiving the yarn.

The device shown in Figures 12 and 13 of the drawings comprises a traverse-roll it which is rotatably mounted upon a shaft IN. The shaft 5M is carried by a support ill! which may eonstitute a part of the frame. The roll 100 is used for the purpose of guiding the yarn22 which is wound in a cone W3. This roll is provided with a smooth cylindrical surface It and has no helical grooves at all. In accordance with this form of the invention, the reversal of the direction of movement of the yarn is caused by short grooves 965 to 08 which are situated in pairs upon opposite sides of the roll it.

The shaft I'M carries a gear wheel E08 which meshes with the horizontal gear wheel H0. The gear wheel H0 is rotatably mounted upon the vertical shaft Ill so that the shafts it! and iii of the helical, 7g drawings.

The roll 90 of Fig-- A disk or, pulley H2 is rotatably mounted upon the shaft Hi and may have the form of a swift the diameter of which can be changed at will. An endless belt its only one side of whichis shown in the drawings, passes over the disc H2. The speed of travel of the endless belt H3 may be easily varied by means of the swift H2. The belt H3 carries a number of thread guides H4 and I it: which move along with the belt. other immovable thread guide H6 has the form of a hook which extends above the endless belt H3 and below the left-hand side surface of the traverse roll flflli.

In accordance with the present invention, the spool ill from which the yarn 22 is unwound may be mounted upon a carriage i I! mounted upon wheels H8. The carriage ill may be moved mechanically or by hand and may have the form of elongated rails carrying several spools it, each spool being provided with a separate thread guide i it which is also mounted upon the carriage ill and which performs the same function as the thread guide 29 shown' in Figure 1.

When the device is in operation the spool Zll should be situated in the position shown in full lines in Figure 12. The yarn 22 is originally guided by the groove tilt. At the sametime the thread guide il i engages the yarn 22 and. due to its movement along with the endless belt H3 shifts the yarn gradually toward the left, while it is being wound in helical coils upon the cone ltd. When the yarn 22 reaches the groove m it is compelled to reverse its direction by the groove tilt and at the same time the yarn is brought into engagement with the thread guide tilt which slips the yarn 22 off the thread guide lid. Then due to the inclination of the yarn 22 caused by the position of spool 2d, the yarn is again wound in helical windings which intersect the original windings, until it reaches the grooves til and tilt. At that time another thread guide carried by the endless belt its is brought into engagement with the yarn and the operation is repeated.

While Figures 12 and 13 are intended to show the formation of a left-hand spool body, Figures 14 and 15 show the formation of a right-hand spool body, with thread guides of a somewhat diiierent type.

The device in Figures iiand 15 comprises a horizontal driving shaft tit which is operated by any suitable mechanism not shown in the drawings. The shaft Mi carries a toothed wheel iii which meshes with the toothed wheel tit carried by the shaft tit of the traverse-roll ti l which is substantially similar to the traverseroll Hid (Figure 12). By means of this arrangement the shaft drives the traverse-roll i263 which is in frictional engagement with the winding or package The driving shat-t iiiti also carries a conical gear wheel which meshes with a gear wheel iiiti carried by the vertical shaft llill. The shaft ilii carries a horizontal dish or table lid the outer circumference of which is provided with a projection constituting a thread guide its.

Another projection has the form of a hook and is situated adjacent the left-hand end of the traverse-roll li t.

The operation of this device is substantially similar to that of the device described in Figures 12 and id. The thread guide lie of the table tilt shifts the yarn Eli from right to left until the left end edge of the traverse-roll tit is reached'and until the yarn 22 is situated in the rooves HI and 132 of the roll. At that time the hook-shaped thread guide I30 causes the yarn 22- to slide oil the thread guide I29 and due to the inclined direction of the thread caused by the position of the spool, the yarn is wound in a direction toward the right-hand side of the roll I24 until it reaches the grooves I33 and I34 of that roll. At that time the projection I29 is again brought into engagement with the yarn 22 and shifts it again toward the left, thus repeating the operation.

It is apparent that the specific illustrations shown above have been given by way of illustration and not by way of limitation and that the structures above described are subject to'wide variations and modifications without departing from the scope of the invention. For example, the constructions shown in Figures 12 to 15 may be used in connection with individual or movable spool bodies and any suitable thread-guiding device may be used for the purpose of shifting the yarn along a traverse-roll in one direction, the return movement being accomplished by the described position of the spool creating a suitable" inclination of the yarn. All of such and other variations andmodifications are to be included within the scope of the present invention.

The terms "yarn and thread as used in this specification and claims are intended to include wire and other strand material, while the terms winding" and package are intended to include cops, cones, coils and the like.

What is claimed is:

1. Strand winding mechanism comprising an arbor, a cylindrical roll for winding a strand of material upon said arbor through frictional engagement with the wound material, a stationary strand guide, means for feeding said strand under tensile stress from said guide directly to said rollat a gradually diminishing angle to a plane disposed normal to the axis of rotation of the roll, and a helical guideway carried by said roll for intermittently feeding said strand at a gradually increasing angle to said plane.

2. Strand winding mechanism comprising an arbor, a cylindrical roll for winding a strand oi material upon said arbor through frictional engagement with the wound material, a stationary strand guide, means for feeding said strand under tensile stress from said guide directly to said roll at a gradually diminishing angle to a plane disposed normalto the axis of rotation of the roll, whereby the strand is spirally wound upon said arbor in one direction, a stationary abut- .ment disposed in the angular path of travel of said feeding strand and cooperating with said roll to reverse the angularity of that portion of the strand in contact with the roll whereby the strand is spirally wound upon said arbor in the opposite'direction, and a helical guideway carried by said roll for feeding that portion of said strand disposed between said guide and said roll at a gradually increasing angle to said plane.

3. Strand winding mechanism comprising an arbor, a cylindrical roll for winding a strand of material upon said arbor through frictional engagement with the wound material, a stationary strand guide, means for feeding said strand unv der tensile stress from said guide directly to said roll at a gradually diminishing angle to a plane disposed normal to the axis of rotation of the the singularit -or that portion of the strand in contact with therroll whereby the strand is spirally wound upon said arbor in the opposite direction, and a helical guideway carried by said roll for feeding that portion of said strand disposed strand guide, means for feeding said strand under tensile stress from said guide directly to said roll at a gradually diminishing angle to a plane disposed normal tothe axis of rotation of the roll; whereby the strand is spirally wound upon said arbor in one direction, means for reversing the angularity of that portion of the strand in contact with the roll whereby the strand is spirally wound upon said arbor in the opposite direction, and means for feeding that portion of said'strand disposed between said guide and said reversed strand portion at a gradually increasing angle to said plane.

5. Strand winding mechanism comprising an arbor, a cylindrical roll for winding a strand of material upon said arbor through frictional engagement withthe wound material, a stationary strand guide, means. for feeding said strand une der tensile stress from said guide directly to said roll at a gradually. diminishing angle to a plane disposed normal to the axis of rotation of the roll, a helical guideway carried by said roll for intermittently feeding said strand at a gradually increasing angle to said plane, and means for exerting a tension upon said strand inversely proportional to said strand angularity.

6. Strand winding means, comprising the combination of an arbor upon which a strand is adapted to be wound into a package, a cylindrical rotary traverse roll frictionally engaging said package along a tangential line to wind said strand, a strand guiding means situated outside the space bounded by two parallel planes passing on opposite sides of said package and also passing at right angles to said line of engagement, said traverse roll" having a helical groove in the periphery thereof into which said strand is fed directly from said guiding means, means for rotating said roll to cause said strand to traverse said package in a direction away from said guiding means to form a spiral winding, and means for releasing said strand from said groove, the direction in which the strand is fed being such that the released strand is wound spirally on the package reversely to the first named spiral winding under the control of said traverse roll.

7. Strand winding means, comprising the combination of an arbor upon which a strand is adapted to be wound into a package, a cylindrical rotary traverse roll frictionally engaging said package along a tangential line to wind said strand, a strand guiding means situated outside the space bounded by two parallel planes passing on opposite sides of said package and also pass ing at right angles to said line of engagement, said traverse roll having a helical groove in the periphery thereof into which said strand is fed directly from said guiding means, means for rotating said roll to cause said strand to traverse said package in a direction away from said guiding means, and means carried by said roll for reversing the direction .of traverse of said winding strand at each end of said groove.

8. Strand winding mechanism comprising an material upon said arbor through frictional engagement with the wound material, a stationary strand guide, said strand following a path exextending directly from said guide to said roll and in a direction transversely of the axis of rotation of the latter, said roll having a helical groove in the periphery thereof, means operable upon the rotation of said roll in one direction for directing the strand into said groove to thereby permit the groove to move the strand at one end of said path'in a direction parallel to the axis of rotation of the roll and means operable upon the continued rotation of said roll for releasing said strand from said groove to allow the strand to be moved in a direction opposite to the first named movement under the strand tension component acting parallel to the axis of rotation of the roll.

9. Strand winding mechanism comprising an arbor, a cylindrical roll for winding a strand of material upon said arbor through frictional eni gagement with the wound material, a stationary strand guide, said strand following a path extending directly from said guide to said roll and in a direction transversely of the axis of rotation of the latter, said roll having a helical groove in the periphery thereof, means operable upon the rotation of said roll for moving the strand at one end of said path in a direction parallel to the axis of rotation of the roll and means onerable upon the continued rotation of said roll for releasing said strand from said groove to al. low the strand to be moved in a direction opposite to the first named movement under the strand tension component acting parallel to the i axis of rotation of the roll.

arbor, a cylindrical roll for winding a strand of 10. Strand winding mechanism comprising in combination, a rotatable arbor upon which a strand is adapted to be wound, a cylindrical rotary traverse roll for rotating said arbor through frictional contact with said wound strand thereby winding said strand into a package, a guide positioned and arranged to guide the strand in a path such that it is drawn from the guide to the roll in a direction at an angle to a plane which is normal to the axis 01 the roll, means for rotating said roll to cause said strand to traverse the roll under the natural tendency of the strand, to meet the roll at right angles, said roll having a helical groove for traversing said strand in the opposite direction, and means for reversing the direction of traverse of said strand at each end of said groove, said groove increasing in pitch as said angl increases whereby that portion of the package adjacent the increased groove pitch will have a smaller diameter than that portion disposed adjacent the smaller groove pitch.

11. Strand windingv mechanism comprising in combination, a rotatable, arbor upon which a strand is adapted to be wound, a cylindrical rotary traverse roll for rotating said arbor through frictional contact with said wound strand thereby winding said strand into a package, a guide positioned and arranged to guide the strand in a path such that it is drawn from the guide to the roll in a direction at an angle to a plane which is normal to the axis of the roll, means 1 material upon said arbor through frictional engagement with the wound material, a stationary strand guide, means for feeding said strand under tensile stress from said guide directly to said r011 at e. gradually diminishing angle to a plane disposed fiormal to the axis 6? rotation ef the roll, a, helical guidewey'cerried by said roll for intermittently feeding said strand at a gradually increasing angle to said plane, and means contrelled by said strand angulerity for controlling the strand tension.

REENERS. GUSTAV KAHLISCH. STEFAN FU'RS'I'.