Abstract: A grooved traverse drum for winding yarn on to a bobbin comprises a yarn guide groove spirally formed in an external surface thereof and including inversely running forwarding and returning paths connected with each other at a pair of turning points situated at opposite ends of the drum, portions of the forwarding and returning paths immediately following the respective turning points having a greater lead angle so that the yarn being guided moves towards the center of the drum as quickly as it passes the turning points, thereby preventing the formation of stitch at end surfaces of a yarn package being produced.

Abstract: A yarn traversing drum for a textile winder having helical yarn traversing guide grooves forming a central intersection at the longitudinal centerline of the drum. One of the grooves has a smaller angle of inclination, between 10.degree. and 15.degree. and preferably approximately 14.degree. , than the angle of inclination, between 16.degree. and 20.degree. and preferably approximately 17.degree., of the other groove. The groove having the smaller angle of inclination is shallower and is formed with a wide yarn-capturing pocket adjacent the central intersection in the direction of yarn guiding. The groove having the greater angle of inclination at the central intersection has a beveled edge intersecting the yarn-capturing pocket of the other groove. The difference in angles of inclination results in the yarn reversing ends of the grooves adjacent opposite ends of the drum being offset circumferentially approximately 90.degree..

Abstract: A winding method for winding a yarn by mounting and removing a defining guide on and from a yarn guide of a drum winder, wherein the defining guide defines a movement of a yarn in one direction according to a winding width and the drum winder has a normal traverse drum and a yarn guide provided at the section via which the yarn is fed to the traverse drum.

Abstract: A method and an apparatus for winding a yarn on a package in which the wind number of the package is changed regularly or rapidly at random in relation to the traverse of the yarn. A traverse drum having a plurality of grooves of different wind number and a branch portion of the traverse grooves is used to wind the yarn.

Abstract: A package is wound using a drum having traverse grooves with different wind numbers. During the winding of the package, the drum wind number by which a supplied yarn is wound onto a package is changed to another drum wind number when the diameter of the package approaches a value at which ribbon winding occurs so that ribbon winding is prevented.

Abstract: A yarn guide drum of a bobbin winder includes a one-piece metal drum body having a jacket surface. A yarn-guiding reversing thread groove is cut into the jacket surface. The reversing thread groove has intersections and is divided into given groove portions in the vicinity of the intersections and other groove portions. The reversing thread groove has a club-like cross-sectional shape in the other groove portions. The reversing thread groove has a rounded groove bottom, a variable depth at least at the intersections, a variable width, a relatively flatter portion, and a relatively deeper portion interrupting the relatively flatter portion defining a groove portion of relatively lesser depth and relatively lesser width through which the yarn initially passes, being followed by a collector pocket groove portion of relatively greater width which decreases in width as the groove continues.

Abstract: A traverse drum in which a pin crosses a first groove is provided at position defining a short traverse length in an intersection of the first groove and a second groove, and a wall portion extending from a position where the pin crosses the first groove is formed in the second groove extending from the intersection to divide it into two grooves.

Abstract: A method and an apparatus for winding a yarn on a package in which the wind number of the package is changed regularly or rapidly at random in relation to the traverse of the yarn. A traverse drum having a plurality of grooves of different wind number and a branch portion of the traverse grooves is used to wind the yarn.

Abstract: A grooved traverse drum for an automatic winder and method for manufacturing the same. An iron metal traverse drum having extremely thin walls is formed by instantaneously injecting a molten metal into a limited cavity of a mold having a form corresponding to the traverse drum in an oxygen-free atmosphere.

Abstract: A yarn guide device for the formation of cross-wound bobbins in textile machines, comprising a driven cylinder having over the entire length of its outer surface an uninterrupted helical groove for guiding the yarn in one direction of the transverse movement with respect to the direction of the run movement of the yarn and a helical groove running in the opposite direction and interrupted by the first groove for guiding the yarn in the other direction of the transverse movement of the yarn; a rotating driven rotor installed before and under said driven grooved cylinder; said rotor including at least one carrier for pre-aligning the yarn during its transverse motion imposed by the uninterrupted groove of said grooved cylinder; and means for driving the rotor with a speed having an unchanging relationship to the speed of rotation of the grooved cylinder.

Abstract: The present invention relates to a grooved rotary yarn distributor for winding bobbins of cylindrical shape, the distributor having a reversible, crossing helical groove and a variable radius of the groove bottom. The distributor is intended for winding of cylindrical bobbins with a constant crossing angle of the wound yarn, the bobbin being employed in textile machines.

Abstract: Grooved rotary yarn distributor for the winding of bobbins of conical or varioconical shape, the distributor having a reversible, crossing helical groove, and a variable radius of the groove bottom, the conical and varioconical bobbins having a variable crossing angle of the wound yarn.

Abstract: The invention concerns an improved yarn package, process and apparatus. The improved package has particular utility in automated processes for making melt spun yarn. Broadly, the invention comprises (a) a cross wound package of melt spun flat filament yarn that is characterized by the yarn's outer end being pile wound in a compact bunch on the cross wound package's surface, the yarn end comprising at least twenty pile turns, the pile turns comprising upstream pile turns and downstream pile turns, and wherein the upstream pile turns partly underlap the downstream pile turns; and (b and c) modifications to conventional process and conventional apparatus for winding yarns, in order to make such packages, particularly at speeds greater than 3000 mpm.

Abstract: A filamentary gathering apparatus, apparatus for forming filaments into a gathered bundle of filaments, and a method of forming gathered filaments into a bundle of filaments according to the present invention result in a reduced tendency of the filaments and/or gathered filaments to wrap around the gathering apparatus. The gathering apparatus is a cylindrically shaped gathering shoe having a height much smaller than the diameter of the shoe and having an annular recess providing for a peripheral groove in the shoe. The groove has a plurality of holes extending radially toward the center of the gathering shoe and up the side of the groove. The apparatus for forming filaments has a fiber forming means, an applicator, one or more rotating gathering shoes and a winder mechanism. The one or more rotatable gathering shoes have the groove with radially extending holes.

Abstract: Apparatus for withdrawing a thread from a spinning station comprises at least two withdrawing rollers, which are preceded by a reciprocating thread guide and are succeeded by a winding device, which comprises a traversing device. In order to ensure that a reciprocating motion will be imparted to the thread guide, the latter is provided on one arm of a double-armed lever, which is freely rotatably mounted and provided on its other arm with another thread guide which is disposed between the withdrawing rollers and the traversing device.

Abstract: A grooved traverse drum for use in a drum winder incorporates a cylindrical abrasion-resistant piece which is slantwise inserted therein in a shallow yarn guide groove portion. The cylindrical abrasion-resistant piece elongates substantially in the direction in which the shallow yarn guide groove portion extends. Such abrasion-resistant piece has a notch or indentation formed in its one end peripheral surface and is positioned with respect to the shallow groove portion such that the notch takes place substantially the whole of the shallow groove portion at the crossover point such that yarn guided by this shallow groove portion only contacts the notch in the abrasion-resistant piece.

Abstract: A method and apparatus satisfactorily controls the tension of filamentary material during winding of the material into a layered package. In the method, filamentary strand is conveyed from a source to a rotating contacting means having a drive means to drive the contacting means during the contact in a direction opposite to the direction of movement of the filamentary strand or in a similar direction but at a slower velocity than the direction of movement of the filamentary strand. The filamentary strand during or after contacting the rotating contacting means is moved in a reciprocating traversing movement for collection on a rotating collecting means. The rotating collecting means provides the movement of the strand from the source to the collecting means and collects the strand into a package of strand.

Abstract: The invention comprises (a) an improved cross wound yarn package on which the final few turns of yarn are wound as a compact pile wound bunch on the cylindrical cross wound package surface; (b) apparatus for winding such a package, comprising a fixed pile winding guide (4 in FIG. 3) as well as a traverse guide (1 in FIG. 3) and means effective to move the yarn from one to the other (5 in FIG. 3); and (c) a modified yarn traverse roll with an extra circumferential groove to aid pile winding (2 in FIG. 1) intersecting a helical traverse groove (1 in FIG. 1).

Abstract: A traverse drum for a winding machine having an endless guide groove extending about and along a peripheral surface of the drum body. At the crossing zone of the guide groove, one of the groove is formed to be a deep groove and the other is formed to be a shallow groove which has a side wall having gentler inclined side wall than the confronting side wall of the shallow groove and a wound yarn-removing notch is formed on the shallow groove.

Abstract: A grooved traverse drum for use in a drum winder is provided with a recess which facilitates the cutting and removal of a yarn coiled around the drum. The recess is formed by modifying that one of the lateral walls forming an interrupted wider yarn guide groove portion at a crossover point of the yarn guide groove which does not contribute to the guiding of the yarn, in such a manner as to widen the groove bottom.

Abstract: A cylindrical-bodied yarn package wound on a bobbin in layers of helical coils which appear in a repeating program having stable curved reversals separated circumferentially by a finite distance, substantially all the crossings occurring in the curved reversals intersect at angles greater than the angles at yarn crossings occurring in the helical portions of the yarn path. The yarn paths involve at least three cycles in which yarn is wound in a program at a constant helix angle between reversals but a plurality of helix angles are included in the program.

Abstract: The winding machine is provided with a tension control means which is adjustable to vary the contact length over which a filament slides on a guide roller before being wound onto a mandrel. The guide roller and associated cam drum can be adjusted simultaneously via end plates which can be adjusted in templates fixed to the machine frame.

Abstract: A winding device for a conical cross-wound coil wherein the coil is driven by peripheral friction applied to a predetermined part of the length thereof constituting a friction zone, and the thread that is to be wound on the coil is fed thereto by a thread guiding member, means for reducing the angle at which the wound threads cross on the cross-wound coil in the friction zone with respect to the thread crossing angle outside the friction zone.

Abstract: A traversing device composed of a central shaft or axle with a wire for traversing of the strand arranged in a generally oval shape surrounding the shaft. The wire in the oval shape is supported such that the plane of the oval is traverse of the shaft at an acute angle and the wires of the oval are generally at an equal distance from the shaft at all points.

Abstract: A grooved traverse drum for use in a drum winder having an abrasion-resistant member inserted and fixed therein at each crossover point of the yarn guide groove. The abrasion-resistant member has a recess which forms the bottom and opposite side walls of the yarn guide groove at each crossover point. The yarn travel guide surface of the recess, except a very small portion thereof, is formed to be slightly higher than the groove-forming surface of the drum constituting material.

Abstract: A new and improved grooved traverse drum for winding yarn into a cone cheese is provided which is characterized by having the traverse drum end adjacent the small end of the cone cheese being of a reduced diameter for a major proportion of its circumference so as to eliminate slippage therebetween and thereby minimize possible yarn damage.

Abstract: A device which prevents the lateral throw-off of loose yarn ends from a yarn package on a winding machine, a package is driven in contact with a rotating member, and such device consists of at least one blowing nozzle arranged at the outside of an end face of the package so that the direction of the air current blown out from said nozzle is directed toward the contact point between the end face of the package and the rotating member. In a preferred embodiment, air is directed parallel to the junction of the winding yarn package and a grooved guide drum, substantially a right angle to the package end face.

Abstract: An improved construction of a rotary yarn-distributing cylinder cooperable with a yarn take-up bobbin at the output of an open-end spinning machine or similar textile apparatus is described. The major portion of the periphery of the distributing cylinder is formed by or covered with a smooth material having a high coefficient of friction to promote efficient driving engagement with the adjacent bobbin. The boundaries of the first surface region are separated from the respective edges of the inclined distributing grooves on the cylinder periphery by second surface regions in the form of smooth strips. The strips exhibit a coefficient of friction considerably lower than the coefficient of the material of the first surface region to permit smooth and unretarded payoff of the yarn in the grooves to the bobbin as the cylinder rotates.

Abstract: A grooved traverse drum for a winder wherein in order to improve the wear resistance of the turns at opposite traverse ends of the yarn guide groove formed along the cylindrical surface of the drum, a wear-resisting member is inserted in each of said turns.

Abstract: An apparatus for winding continuous strands of material about rotating cores to form strand packages is provided with primary traversing mechanisms which impart a primary traversing motion to the strands as they are being wound on the packages whereby the strands progress and regress to define a series of bights. A secondary traversing mechanism is provided to impart a secondary traversing motion to the strands relative to the packages to advance the series of bights back and forth across the peripheral face of the packages. The primary traversing mechanisms each comprise a plurality of elongate straight elements which are supported in spaced-apart parallel relationship to define a cylindrical pattern. Each primary traversing mechanism is mounted on its axis of rotation so that the elongate elements extend at an oblique angle relative to the axis of rotation of the traversing mechanism.

Abstract: High-speed cross-winding apparatus with two traverse motion devices for winding elongated materials, especially continuous filaments, into packages and embodying a reciprocable thread guide as a first traversing device, and a second traversing device in the form of a roller with spiral, thread-guiding grooves, the first and second traverse motion devices being driven synchronously, and a drive roller for driving the package being driven independently thereof. The grooves of the latter traverse roller have variable depth for winding tension uniformity, and may also temporarily accelerate stroke velocity above the stroke velocity of the first traverse device immediately before and/or after stroke reversal. The groove depth increases from the middle of the roller to a maximum depth preceding the stroke reversal point and then either (a) immediately and continuously decreases in depth or (b) immediately decreases, then increases and then again decreases in depth.