Abstract: A method which improves the correspondence between the produced fancy yarn and the predetermined configuration of said fancy yarn. The fancy yarn is guided through a sensor device in a spinning device after it is formed and the diameter of the fancy yarn is continuously measured by the sensor device. The fancy configuration of the produced yarn is determined on the basis of the measured values of the diameter and is compared with the predetermined fancy configuration. The comparison is carried out until sufficient correspondence between the predetermined fancy configuration and the fancy configuration of the optimized, produced yarn is achieved.

Abstract: A method of maintaining the location of a fiber doff inner-diameter-tow at a point of payout within a constant inertial reference frame includes providing a flat fiber tow payout system with a center-pull doff of flat fiber tow that pays out at a point of payout along an inner diameter of the center-pull doff with rotation of the center-pull doff about a vertically oriented axis of rotation, the flat fiber tow payout system including a constant inertial reference frame for payout of the flat fiber tow along the inner diameter of the center-pull doff without twisting the flat fiber tow; and accelerating and stopping rotation of the center-pull doff with the flat fiber tow payout system so as to maintain payout of the flat fiber tow along the inner diameter of the center-pull doff in the constant inertial reference frame, preventing twisting of the flat fiber tow.

Abstract: The device serves to produce effect yarns on process machines through the deliberate production of short lumps in the yarn through short-duration yarn overfeed and includes a device (A) for lateral yarn deflection which comprises a motor-driveable, servo-controlled yarn guide (3) with an adjustable stroke. A movement of the yarn guide (3) in the one direction effects a slight underfeed and a movement in the other direction effects a pronounced overfeed of the yarn (F, F2). The yarn guide (3) is attached to a traverse-motion element (2), formed by a flexible member which is rigid in the stroke direction, preferably by a wire rope, a string or a belt, by which it is driven. The yarn guide (3) effects the storage of a yarn length, in the form of a loop, which corresponds to the desired overfeed. The device is used in false-twist and air texturing machines.

Abstract: A twisted yarn structure includes constituent fibers which extend between a surface and a core of the yarn structure so that at least one portion of each fiber is trapped and bound within the yarn structure by portions of other fibers. The fibers can extend cyclically or in random fashion between an inner region and an outer region of the yarn, and can be twisted in subgroups along the length of the yarn structure to be locked in position therein. To produce the yarn structure having fibers which cyclically extend between the inner and outer regions, the fibers of a drafted strand of fibers from front drafting rollers are spun and passed through an oscillating guide before being wound on a spindle.

Abstract: Denim fabric is made from warp yarn which is at least 30% novelty cotton yarn having irregularly spaced effects (e.g. slubs) about one-half inch to two inches in length. The cotton novelty yarn is made by separating cotton sliver into cotton fibers, and acting on the cotton fibers with a negative wire combing roll, and then twisting the cotton fibers into the cotton novelty yarn. The negative wire combing roll has a tooth angle of about -0.01 to -15.degree. (e.g. about -2.degree.). The novelty cotton yarn is combined with at least 10% conventional novelty yarn or non-slub open end or ring spun yarn and made into a warp of about 54-100 ends per inch, and may be ring dyed (with indigo, vat, sulphur, pigment or reactive dye) so that the core of the yarn remains white. The warp is woven with a filling yarn to produce a denim fabric with a weight of about 5 oz. -17 oz. per sq. yd. having the weave and yarn size selected so that a tight construction is provided which highlights the slubs.

Abstract: An apparatus for air jet processing of threads of yarn to create fancy effects in yarn. The apparatus comprises at least one pair of reciprocally moving triangular profiles which move across the paths of moving yarn strands. Each triangular profile is separately mounted on a driving shaft and each moves opposite the other in order to create slack portions in the moving strand that are then taken up by an air jet to create slub lengths. The overall yarn processing system contemplates at least one pair of first and second feed rolls that feed lengths of yarn to air jet machines.

Abstract: Method to provide a novel false twisted slub yarn by combining a core yarn and an effect yarn in a fluid tangling zone. The linear velocity of the effect yarn is raised to allow slubs to be produced in the combined yarn in an air jet apparatus. The slub yarn is then run through a commingling air jet after formation of the slubs to commingle the lean portion of the yarn between the slubs formed to prevent a strip back of the yarn during weaving and/or knitting.

Abstract: Fancy twists arranged and/or formed at random are provided on a yarn. The threads are delivered by a feed device at different feed speeds. The feed device has a first roller and a second roller, which rotate at different peripheral speeds. A yarn thread is arranged to be pressed optionally against one or the other roller by idler rollers. The idler rollers are directly actuated by a solenoid each. The solenoids are energized in push-pull mode by a random generator. The second roller forms part of a stepped roller assembly having rollers of different diameters, each of these rollers cooperating with a separate idler roller controlled by a solenoid.

Abstract: On a yarn, fancy twists arranged and formed at random shall be generated by a device added to the normal twisting device. To this end a fancy twist yarn thread is led through a pivotable fancy twist lever extending transversely to the moving direction of the basic yarn threads and is then led with the basic yarn threads to the cop of the twisting device. The fancy twist lever is deflectable by a fancy twist lever drive, such that the feed point of the fancy twist yarn thread moves along with the basic yarn threads. The fancy twist lever drive is controlled by an electronic control unit having a random generator.

Abstract: A method and apparatus for flamme fancy yarn manufacture for textile production of various number of effects along the length and in a given length of ready-made yarn, irrespective of the length of the fibres of the inlet product both from short staple and long staple material as the flamme fancy yarn is obtained by simultaneous feeding of two slivers with one and the same staple fibres length, as one of the slivers may not be subjected to a permanent force in the draft zone, it may be drawn normally without breaking to be used for the formation of a core thread. The apparatus for achieving the method has the advantage of an easy readjustable construction, and the ability to change the range of products without replacement of the performing elements.

Abstract: An apparatus for the production of a yarn has a joining group provided with a frame carrying a pneumatic-joining assembly, a unit for conditioning substantially inelastic yarns and feeding them to the pneumatic-joining assembly and a unit for feeding an elastic strand to the latter. A common drive is provided with individually adjustable transmission ratios using conical pulleys and belts.

Abstract: The present invention pertains to a process and product thereof, and an apparatus, for converting a twisted, continuous filament, multifilament yarn into a staple-like yarn. The process is carried out by needling the yarn with a barbed needle in order to break yarn filaments. The broken yarn filaments protrude from the yarn after the needling process. The protruding filament ends give the resulting yarn the appearance of a spun yarn.

Abstract: A slub yarn, in which a sheath component is wound around a core component to form a plurality of slub portions along the axis of the yarn, which structure is obtained by simultaneously false-twist texturing the core and sheath components. The slub yarn has a feature that the slub portion includes a multilayered winding structure of seven or more layers of the sheath component wound around the core component. A method for producing the slub yarn includes a step of overfeeding a sheath component to a core component in the direction substantially perpendicular to a passage of the core component in a twisting zone of a false-twist texturing machine while the sheath component is guided by a guide repeatedly traversed along a passage of the core component, a distance between the guide and the passage of the core component being kept in a range not shorter than 10 cm. An apparatus for randomly traversing the sheath component along the core component during the false-twist texturing process is also provided.

Abstract: An apparatus for producing special yarn made of a fiber strand in which a number of fibers are randomly arranged along the lengthwise direction thereof, in which special yarn at least one of the yarn structural parameters, e.g., yarn count number or number of twist, changes along the lengthwise direction of the yarn.A pattern of change of the parameters of the yarn structure with respect to the length of the special yarn to be produced is stored in a central processing device, while a spun length of the special yarn is measured by a sensor. The yarn structural parameters are changed to correspond to the pattern set to the central processing device and the special yarn is produced by the yarn forming device using another central processing device of the spinning frame.This apparatus can be used for a ring spinning frame, an open end spinning frame, a fasciated yarn spinning frame, and the like.

Abstract: A new process is provided for producing highly resilient, textured, continuous multifilament polymeric yarns and combinations of such yarns with other continuous filament yarns and with spun yarns. The unstable or wild loops which form in conventional air jet textured yarns are substantially eliminated in the product yarns of this invention. The product yarns are formed by continuously drawing polymeric yarn under controlled temperature conditions, texturing the yarn in an air jet texturizer and subjecting the textured yarn to saturated steam while restraining the linear shrinkage of the yarn in the presence of the steam, followed by continuous take-up of the yarn on a package.

Abstract: A method and apparatus for producing a fancy yarn, in which a core and effect yarn 5 are fed along a path to a false twist device 6 and a binding yarn 4 is fed via a rotating component 1 adjacent the path, the component rotating about an axis transverse to the path, and having a yarn guiding portion 3 radially spaced from the axis, whereby the binding yarn is caused to perform a reciprocating, oscillating motion with respect to the core and effect yarns.

Abstract: A direct current electromagnetic disc type tension control which periodically has the D. C. voltage increased from low voltage to high voltage and the high voltage is driven to zero a successive predetermined number of times to vibrate the tension discs in order to break the contact between the tension discs and between the tension discs and the electromagnet to lower the resistance to rotation of the discs.

Abstract: Method and apparatus to produce a continuous filament textured yarn with unusually low crimp contraction and intermittent crimp and molecular orientation along its length. This is accomplished by the use of an electromagnetic tension device to control the draw in the yarn being supplied to a false twist device driven at a speed to provide low false twist in the yarn being twisted. The apparatus includes a control between the electromagnetic tension control and the yarn supply package to prevent the yarn coming off the package from rotating in a full balloon path and consequently prevent entanglement of the yarn in the yarn guides as it passes to a yarn consuming machine.

Abstract: A method and apparatus for producing novelty yarn with an unusual configuration. An effect yarn is fed to a novelty yarn jet, and a core yarn is fed to a different yarn port in the same jet, the core yarn being maintained substantially taut. The combined core and effect novelty yarn is taken up from the jet and periodically (preferably pseudo-randomly) a pronounced variation in linear density is provided in the combined yarn. This linear density variation is accomplished by introducing a first fluid pulse into the jet at a first position to form a loop in the effect yarn, which loop extends substantially coincident with a portion of the core yarn, and then utilizing a second fluid pulse at a spaced position from the first pulse to impart a spiraling and/or rotating action to the loop of effect yarn to wind the effect yarn around the core yarn.

Abstract: A direct current electromagnetic disc type tension control which has alternating current superimposed on the direct current circuit to allow the electromagnet to vibrate the tension discs in order to break the contact between the tension discs to lower the resistance to rotation of the discs by the yarn passing therethrough. The direct current circuit includes a source of high voltage and a source of low voltage and the current from the low direct current voltage source is cut off periodically and momentarily.

Abstract: A direct current electromagnetic disc type tension control which has alternating current superimposed on the direct current circuit to allow the electromagnet to vibrate the tension discs in order to break the contact between the tension discs and between the tension discs and the electromagnet to lower the resistance to rotation of the discs.

Abstract: A direct current electromagnetic disc type tension control which has alternating current superimposed on the direct current circuit to allow the electromagnet to vibrate the tension discs in order to break the contact between the tension discs and between the tension discs and the electromagnet to lower the resistance to rotation of the discs by the yarn passing therethrough. The direct current electromagnetic tension control is an electromagnetic disc type tension control in which the yarn guiding post is slotted off-center between the discs so that the yarn being tensioned is received between the discs and exerts a torsional force on the tension discs to cause the tension discs to rotate in order to enhance the dissipation and self-cleaning of the yarn finish accummulated therebetween.

Abstract: The apparatus includes a control between the electromagnetic tension control and the yarn supply package to prevent the yarn coming off the package from rotating in a full balloon path and consequently prevent entanglement of the yarn in the yarn guides to a yarn consuming machine. The balloon control basically employs a bar member under which the yarn passes as it is delivered to a yarn guide tube. The bar member prevents the yarn from rotating as it is taken off over-end from the yarn package thereby alleviating the possibility of yarn entanglement at the yarn tube.

Abstract: A direct current electromagnetic disc type tension control which periodically has alternating current superimposed on the direct current circuit to allow the electromagnet to vibrate the tension discs in order to break the contact between the tension discs and between the tension discs and the electromagnet to lower the resistance to rotation of the discs.

Abstract: A spinning-twisting machine with a hollow spindle, particularly for the production of fancy yarns, includes a drawing frame for an assembly of fibers. A drawing roller is contained in the drawing frame and it is notched at spaced locations around its circumferential surface for suppressing, locally and temporarily, the nip between a pair of drawing rollers. An assembly of fibers is passed between the drawing rollers and then through a hollow spindle where a covering yarn is wrapped around the assembly of fibers. Take-up cylinders draw the combined fancy yarn through the spindle at a peripheral speed greater than the speed of feed rollers supplying the assembly of fibers to the drawing rollers.

Abstract: The present invention concerns the production of fancy yarns, in which during open-end spinning a roving is supplied program-controlled to the spinning unit for the yarn to be produced. According to the invention at least one roving bobbin is supported by a support member, which is detachably arranged on a can used as a receptable for the fibre material to be processed. The bobbin creel used up to the present for the bobbins impairs the accessability of the winding locations for the fancy yarn produced. This creel, according to the invention, no longer is required. Thus, the cumbersome mounting and dismantling of the creel in changing over from normal yarn to fancy yarn and vice-versa is dispensed with. According to the invention the alterations required for such changes of the yarn production mode are extremely simple.

Abstract: Apparatus and method to provide a novel false twisted slub yarn by combining a core yarn and an effect yarn in a fluid tangling zone. The linear velocity of the effect yarn is raised to allow slubs to be produced in the combined yarn in an air jet apparatus.

Abstract: A method and an apparatus for the production of fancy yarn includes the supply of elongate fancy material pieces (17) by gas under pressure to suction-loaded spinning cylinders (10) which spin the fancy material pieces together with separately supplied basic yarn pieces to form fancy yarn. The fancy material pieces are flung by means of the gas under pressure, which is preferably generated in a jet injector (14), against a screen (7) which is located in the region of the nip between the spinning cylinders. Elongate fancy material pieces which have become rolled together during transport to the screen (7) are straightened out after impingement against the screen (7) by the suction prevailing in the nip of the spinning cylinders (10) whereby the fancy material pieces are given the desired elongate form in the fancy yarn.

Abstract: A method and apparatus for producing novelty yarn with an unusual configuration. An effect yarn is fed to a novelty yarn jet, and a core yarn is fed to a different yarn port in the same jet, the core yarn being maintained substantially taut. The combined core and effect novelty yarn is taken up from the jet and periodically (preferably pseudo-randomly) a pronounced variation in linear density is provided in the combined yarn. This linear density variation is accomplished by introducing a first fluid pulse into the jet at a first position to form a loop in the effect yarn, which loop extends substantially coincident with a portion of the core yarn, and then utilizing a second fluid pulse at a spaced position from the first pulse to impart a spiraling and/or rotating action to the loop of effect yarn to wind the effect yarn around the core yarn.

Abstract: Apparatus and method to provide a novel false twisted slub yarn by combining a core yarn and an effect yarn in a fluid tangling zone. The linear velocity of the effect yarn is raised to allow slubs to be produced in the combined yarn in an air jet apparatus.

Abstract: A multiply effect yarn is wound up from a plurality of strands on a yarn-winding body that is rotated at a variable predetermined speed. Each of the strands is fed via a respective strand-feed element to the yarn-winding body. The feed rate of each of these strand-feed elements can be individually varied, and is established as a function of the rotation rate of the yarn-winding body to maintain a predetermined proportionality between the various speeds. The drive for each strand-feed element comprises a separate pair of variable-speed motors set to operate at different speeds and operated by forward and backward counters so that either the one motor or the other motor of each drive is connected to the respective feed element which can also be connected to a brake, if desired. The various speed rates can rapidly be adjusted, in accordance with the overall drive rate for the yarn-winding body, even during production of the multiply effect yarn.

Abstract: This invention is directed to an improved apparatus in which a fluid jet texturing device is used to produce a composite novelty yarn having slubs of selectively varied size distributed with selectively varied spacing along the linear length of the yarn. The apparatus includes at least two feed rolls to serve to feed yarn to the texturing jet, one of said rolls being operable to feed yarn at a higher speed than the other roll or rolls. An actuator arm is provided having an idler roll at one end. The first yarn is directed into contact with a slower feed roll while a second yarn is directed into contact with the idler roll. The actuator arm is selectively moved so as to first press the second yarn against the relatively fast roll and then press this yarn into contact with a slower feed roll to thereby vary the speed at which the second yarn is fed into the texturing jet.

Abstract: A random signal generator using a maximum-length shift register sequence to provide control pulses to a slub yarn producing open end spinning system. The time between control pulses is random to prevent any discernible pattern appearing in the fabric made from the yarn.

Abstract: Method and apparatus to produce slub or thick and thin yarns with twist variation on open end spinning machines by changing the speed of the yarn as it exits from the rotor of the open end spinning machine. The speed of the yarn is varied by a pivotally mounted lever member which varies the length of the yarn from the exit of the rotor to the yarn delivery rolls.

Abstract: A method of making slub or thick and thin yarns with twist variation on open end spinning machines by changing the speed of the yarn as it exits from the rotor of the open end spinning machine. The method produces a unique slub yarn which has a portion of high twist adjacent the slub in the yarn which has lower yarn twist.

Abstract: A method and apparatus for making a novelty yarn, having relatively short varying length and varying size auxiliary strands randomly distributed therealong, on a spinning frame provided with a series of spaced pairs of rotatable drafting elements defining a drafting zone, which drafting elements include a pair of delivery rolls. The novelty yarn is formed by advancing at least one strand of staple fibers into and through the drafting zone while continuously forming therefrom a ground strand of drafted staple fibers emerging from the delivery rolls. An auxiliary strand of staple fibers is fed through the nip of a pair of auxiliary feed rolls and to the nip of the delivery rolls while the auxiliary feed rolls are being rotated at a slower effective speed than the effective speed of the delivery rolls so as to effect a random parting of the auxiliary strand and thereby form relatively short varying length auxiliary strands randomly distributed along the ground strand.

Abstract: A programmable electronic control system is provided to control the feed devices which supply different threads at different speeds in a spinning or twisting machine in order to produce yarn with special effects of color or shape at intervals along the yarn. The control system is supplied with clock pulses synchronous with the machine at intervals corresponding to a unit length of the basic thread feed. The length of a program module is determined by a settable pulse divider operating on the clock pulses and the resulting pulses are fed to a settable counter which determines the points in the module at which changes take place. Provision is made for repetition of program units a selected number of times and for interruption of the program at a random point.

Abstract: A process is disclosed for preparing slubby strands in which a textile strand is passed either over a surface or through a slubbing tool. The surface, if employed, may include a plurality of fluid passages positioned therein. As the strand passes over the surface or through the slubbing tool, high pressure fluid is introduced onto the surface of and through the strand. The high pressure fluid passes through the strand. This passage of fluid through the strand causes the strand to twist and bulk along its length to form a slub which is rapidly removed from the working surface of the slubbing surface or tool as a consolidated slub positioned on the strand. When a surface is employed, the surface may be a moving surface and when the surface includes a plurality of fluid passages, the passages may be vented at a point below the surface. Various apparatus for carrying out the novel method are disclosed as is the novel strand produced thereby.

Abstract: A process is disclosed for preparing slubby strands in which a textile strand is passed either over a surface or through a slubbing tool. The surface, if employed, may include a plurality of fluid passages positioned therein. As the strand passes over the surface or through the slubbing tool, high pressure fluid is introduced onto the surface of and through the strand. The high pressure fluid passes through the strand. This passage of fluid through the strand causes the strand to twist and bulk along its length to form a slub which is rapidly removed from the working surface of the slubbing surface or tool as a consolidated slub positioned on the strand. When a surface is employed, the surface may be a moving surface and when the surface includes a plurality of fluid passages, the passages may be vented at a point below the surface. Various apparatus for carrying out the novel method are disclosed as is the novel strand produced thereby.

Abstract: An apparatus for manufacturing filaments of varying denier includes electrically activated tension means disposed between a feed roller and a draw roller for engaging the filament and producing a variable tension thereon when activated.

Abstract: A novelty yarn comprising a ground strand of spun staple fibers with relatively short varying length and varying size auxiliary strands of staple fibers randomly distributed along the ground strand and spirally twisted therearound. The largest size auxiliary strands have portions thereof formed of such a large number of fibers so arranged spirally around the ground strand that adjacent turns of those portions overlie and substantially shield the underlying ground strand from view. Other intermediate size auxiliary strands are formed of a lesser number of fibers and are so arranged spirally around the ground strand that both the ground strand and the auxiliary strand are exposed to view. Still other smallest size auxiliary strands are formed of such a few number of fibers arranged spirally around the ground strand so as to be barely discernible thereon. The ground strand and the auxiliary strand may be of the same or of differing color characteristics.

Abstract: This invention provides a method of forming fancy yarns which does not require a fancy twisting frame. The method according to the present invention involves supplying a fibrous foundation strand and a fibrous effect strand to a pair of drafting rollers, the foundation strand being supplied from a drafting restraint such as a double apron and the fibrous effect strand being supplied immediately before the rollers without restraint whereby portions of the effect strand are snatched through the rollers and are incorporated into the foundation strand as randomly spaced irregularities which persist when the combined strands are spun into a yarn. The method can be used to make slub yarns, for example of wool, which may have a foundation including a synthetic multifilament reinforcing core. By back-twisting the resultant yarn with a binding yarn a slub gimp yarn can be produced.

Abstract: Fancy yarns such as knop or stripe yarns are produced by supplying an effect yarn or roving to a foundation yarn or roving during the operation of spinning but before the foundation yarn reaches the twisting spindle. The effect yarn is kept under a tension which is adjusted to cause the yarn to oscillate with respect to the foundation yarn. Oscillation builds up layers of effect yarn at intermittently spaced locations along the foundation yarn which constitute irregular knops or stripes on the yarn. The twist of the effect yarn in the finished fancy yarn will be found to reverse with each succeeding layer in the knop. The invention enables fancy yarns to be readily produced on ordinary spinning frames without the provision of interrupted feeds or other special features on the frame.

Abstract: A method and apparatus for continuously spinning and winding yarn are provided in enabling a stored length of spun yarn stored in a stacked and layered form in the course of traveling from the spinning point to the winding point to have yarn removed therefrom, without interrupting the spinning process, not only in the normal direction of yarn travel but also temporarily in the opposite direction.

Abstract: A method and apparatus for producing novelty yarn with an unusual configuration. An effect yarn is fed to a novelty yarn jet, and a core yarn is fed to a different yarn port in the same jet, the core yarn being maintained substantially taut. The combined core and effect novelty yarn is taken up from the jet and periodically (preferably pseudo-randomly) a pronounced variation in linear density is provided in the combined yarn. This linear density variation is accomplished by introducing a first fluid pulse into the jet at a first position to form a loop in the effect yarn, which loop extends substantially coincident with a portion of the core yarn, and then utilizing a second fluid pulse at a spaced position from the first pulse to impart a spiraling and/or rotating action to the loop of effect yarn to wind the effect yarn around the core yarn.