Abstract: A core/wrap yarn is formed on a conventional ring-spinning yarn system by including a gripper nip immediately downstream from and closely adjacent to the front roller nip of the system; feeding a core strand and at least one wrap stand on each side of the core strand from the front roller nip to the gripper nip, wherein the wrap strands are spaced from the core strand at the front roller nip and converge with the core strand in the gripper nip to wrap around the core strand in the gripper nip so as to form wrapped yarn which then is passed through a ring traveler on to the wind-up system.

Abstract: An improved apparatus for the drafting section of ring spinning frames is disclosed. The apparatus includes a front cot roll apron which permits the apparatus to be operated at higher than normal draft ratios without sacrificing spinning performance or product uniformity.

Abstract: A blended yarn producing device includes a draft device having back rollers, middle rollers and front rollers and a twisting device succeeding the draft device, which is constituted such that a trumpet guide for introducing slivers of different types separately at upper and lower locations is located on the sliver entrance side of the back roller.

Abstract: This invention relates to a device for drawing roves or slivers of fibers on a spinning machine with a view to converting this material into spun yarns, of the type incorporating pendulous arms, constituted essentially by an assembly comprising, mounted on the support frame of the machine, a series of splined shafts extending over the whole length of the machine and common to all the work positions, said shafts being driven in rotation and, on the other hand, presser elements constituted by rollers mounted on a pivoting support arm comprising means ensuring pressure of the presser rollers against the splined shafts, wherein the pendulous arm bearing the presser elements is assembled on the frame of the machine via a support comprising means for simultaneously separating the presser rollers parallel to the line of splined shafts.

Abstract: A process is provided for producing carbon fiber yarns which comprise an intimate association of carbon fibers having an average length of between 100 and 120 mm. The process comprises transforming tows of multifilaments whose count is between 0.5 and 1 dtex by cracking, by drawing, and controlled breaking to obtain long fibers having an average length of between 100 and 120 mm. These fibers are then transformed on standard spinning equipment for long fibers into a range of yarns which have counts ranging from Mn 1 to Mn 100. The yarns of the present invention can be used for making prepreg fabrics for composites, fabrics for dry and wet filtration, fabrics for making Faraday shields, fabrics for carbonization for carbon/carbon pieces and high-performance seals.

Abstract: A fine heterogeneous hybrid spun yarn is blended from electrostatically conductive staple fibers and electrostatically non-conductive staple fibers so that the yarn is electrostatically conductive only over short discrete lengths. When used in pile fabrics, such as carpets, the fine yarn is introduced with at least some of the carpet facing yarns during the carpet making operations. The resultant carpet structure substantially eliminates electrostatic shock to a human walking across the carpet and approaching a ground such as a light switch, radio, or another person. Such a carpet does not constitute a dangerous floor covering.The unique heterogeneous hybrid spun blended yarn is achieved by process techniques completely contrary to accepted blending practices.

Abstract: An improved fiber control for an apron drafting system of a spinning frame is disclosed which includes a rear pair of rolls (3, 6) a middle pair of rolls (2, 5), and a front pair of rolls (1, 4). A silver guidance zone is formed between upper apron 8 and lower apron 11 around rolls 5 and 2, respectively by which sliver is guided in a prescribed path. The guidance path may be configured especially to the fiber type and length by transverse projection elements (17, 18, 19) which engage lower apron 11 and are displaceable. The projection elements are displaceable perpendicular to and along the length of the sliver guidance zone and may be made to contact lower apron 11 to provide a desired shape for control of the sliver.

Abstract: A ring spun yarn having good core cohesiveness, and complete sheath covering, the sheath comprising first fibers, such as cotton, and the core comprising second fibers having distinctly different properties than the first fibers, such as polyester, is produced. A sliver of first fibers and a roving of second fibers are fed to a drafting apparatus so that the roving is at the exact center line of, and on top of, the sliver. The roving and sliver are passed together through the rear rolls, apron, and front rolls of the drafting apparatus to produce a drafted composite sliver. Twist is imparted mechanically to the drafted composite sliver to produce a roving having a core and sheath. Then the roving is further drafted and twist is mechanically imparted thereto, producing a final core/sheath yarn.

Abstract: Textile slivers tend to loose their cohesion when travelling over long distances from one piece of storage or processing equipment to another such piece of equipment. This problem is overcome by subjecting the sliver to a false twisting process during its travel, desirably by a pneumatic false twister located immediately adjacent to the sliver-receiving equipment.

Abstract: A continuous process of making a blended yarn of staple fiber and long-fiber or filamentary material in which the long-fiber or filamentary material is passed through a rupture zone to produce lengths thereof which are fed directly into an air stream with the staple fibers to produce an intimate blend which is conveyed by the air stream directly to an open end spinning device which produces the yarn.

Abstract: A vertically-arranged rubbing finisher has a plurality of rubbing units each traversed vertically by a pair of slubbings which are directed to respective winding devices for winding on respective spools to form single-slubbing bobbins. The two winding devices receiving a respective pair of slubbings are disposed on opposite sides of a vertical, longitudinal plane of symmetry through the rubbing unit, the winding devices on each respective side forming a group including drive rollers for the respective spools arranged for rotation about a common horizontal axis. Each spool is pivotable away from its drive roller as its bobbin is formed on arms which, when the bobbin is completed, pivot further, downwardly, to deposit the bobbin on a conveyor belt for transfer from the machine before returning upwardly to collect a new, empty spool for filling from a supply device.

Abstract: A novel roving, and spun yarn produced from the roving, have a core and a sheath arrangement with substantially 100 percent of a first type of fiber in the sheath, and for a second type of fiber having distinctly different properties than the first fiber, about 75-90 percent in the core and about 25-10 percent in the sheath. Yarns having a cheaper fiber in the center (e.g. polyester) and a more expensive fiber on the outside (e.g. wool), or one having a higher strength core fiber and a more luxurious sheath fiber, can be produced. A sliver of first fibers and a distinct sliver of second fibers are fed in generally parallel paths. The slivers are continuously drafted to produce two distinct drafted slivers, and the path of at least one of the drafted slivers is changed so that the two slivers proceed in intersecting paths, and at substantially the same speed. The first fibers are continuously caused to wrap around the second fibers, with an angle of intersection between the two paths in the range of 60.degree.

Abstract: A method and apparatus for producing spun yarns of various constructions which includes separating a potentially highly productive drafting stage from a spinning process and thereafter by the use of an apparatus which can be used to spin and ply two yarns while inserting an amount of twist of one sense into each yarn while concurrently plying those yarns with an equal amount of twist of the opposite sense. The apparatus can also be used to spin singles yarns while concurrently inserting twist into that yarn in a two-for-one mode. The yarns can be two twistless staple yarns or a singles yarn which is spun and plied with a two-fold yarn to produce a three-fold yarn structure. The twist in the three singles components of the three-fold yarn structure can be equal in magnitude and sense while the plying twist between the three singles yarns can be equal in magnitude and opposite in sense to the twist in the singles yarns.

Abstract: Method of manufacturing core yarns from fiber bands. A part of the fibers of a fiber band is released from the fiber band and is deflected. These deflected fibers do not participate in the spinning process, but are wrapped around the twisted core in a plurality of reinforcing winds. The method of the invention overcomes the problems of manufacturing yarns without requiring expensive and complicated mechanical elements.

Abstract: A unique process for producing torque-free or balanced yarns of staple fibers with glass filament cores is disclosed. Staple fiber roving is fed through a drafting system. Glass filament is fed into the center of the staple fiber just prior to entering the front rolls of the drafting system. Sufficient twist is applied to the fiber around the glass filament using the ring spinning process and two or more of these yarns are ply twisted in the opposite direction of the spinning direction to firmly lock the staple fiber to the glass filament. The twist multiplier range for spinning is between 3.0 to 3.5 and for plying is betwen 3.5 and 4.5. Cotton fiber is the principle fiber used with a glass filament core. The resulting yarn can be tied by knotting onto existing loom beam ends when breaks occur during weaving without shearing of the yarns.

Abstract: A multicolored spun yarn is provided which comprises a substantially untwisted bundle of core staple fibers and a plurality of staple fibers wrapped helically around said bundle of core staple fibers; the bundle of core staple fibers comprises a plurality of staple fibers which are different from each other in color tone or in dyeability, and the yarn having at random intervals portions wherein staple fibers of one kind cover up staple fibers of another kind, and the method of manufacturing the same.

Abstract: A method and apparatus for manufacturing a multi-component yarn as well as a multi-component yarn produced thereby, in which staple fibers and at least one endless yarn are combined with each other in a defined manner such that a wrapped yarn will result which purely externally has as far-reachingly as possible the properties of a pure staple fiber yarn; the sliver and the endless yarn or yarns are fed separately to a feed roller pair, are combined thereat travelling at the same velocity and parallel to one another, and are subsequently exposed together to a false twist and finally wrapped by a fine-count binding yarn; the predominantly nonvisible part of the wrapped yarn is constituted by the endless yarns which render the yarn bulky with relatively low material expenditure.

Abstract: A method is disclosed in which a silver (2) of textile fibers is drawn in a drawing mechanism (3), strengthened in a wrapping unit (4) by wrapping with a fine filament yarn into a roving (5) and the latter is drawn in the drawing mechanism (11, 12) of a spinning machine down to the desired yarn thickness. Rupture of the filament yarns in the drawing mechanism of the spinning machine takes place not in the predrawing zone but only in the main drawing zone. For wrapping of the roving a filament yarn is employed, the tension in which at an elongation of 4% amounts to at least 10 N and the ultimate strength of which amounts at most to 100 cN, and in which the ratio of elastic elongation to total elongation at a loading of 15 CN does not fall below the value of 80%. The wrapping unit (4) is surrounded with a stationary casing one half (45a) of which may be swung out.

Abstract: A spinning frame of the type having a main drafting zone through which two fiber bands move in spaced parallel relation for subsequent twisting into a single yarn is provided with a first pair of rollers located at the entrance to the main drafting zone, a second pair of rollers located at the exit of the main drafting zone, a pair of endless leather tapes extending about a roller in each of the first and second pair of rollers, and a third pair of rollers for delivering two fiber bands from the main drafting zone to a suitable twisting device.

Abstract: A novel synthetic yarn is disclosed which comprises fibers of different lengths (as specified). At least three groups of synthetic fibers are present in the yarn, with the synthetic fibers within each group being substantially uniform in length. The substantially uniform length of each group of synthetic fibers present in the yarn differs from the substantially uniform length of the synthetic fibers in the other groups. The use of such mixtures of fiber lengths in a synthetic yarn enables the yarn to exhibit physical characteristics such as high bulk which more closely resemble the characteristics of natural fiber-containing yarns. Fabrics having improved physical characteristics may also be produced from the novel synthetic yarns disclosed.

Abstract: A high draft apparatus in a spinning machine for forming a spun yarn from a roving or sliver. The draft apparatus comprises back rollers, apron-provided middle rollers and front rollers and a gripping and a pressing means for a sliver disposed on the front end portion of the apron so that the arrangement of fibers in the drafted sliver is regulated and a high draft ratio can be attained.

Abstract: A novel synthetic yarn is disclosed which comprises fibers of different lengths (as specified). At least three groups of synthetic fibers are present in the yarn, with the synthetic fibers within each group being substantially uniform in length. The substantially uniform length of each group of synthetic fibers present in the yarn differs from the substantially uniform length of the synthetic fibers in the other groups. The use of such mixtures of fiber lengths in a synthetic yarn enables the yarn to exhibit physical characteristics such as high bulk which more closely resemble the characteristics of natural fiber-containing yarns. Fabrics having improved physical characteristics may also be produced from the novel synthetic yarns disclosed.

Abstract: A method is disclosed for drawing and blending textile fiber and conductive metal filaments. The method is characterized by feeding at least one bundle of a first textile material through draw rollers of a drawing frame, unwinding at least one roll of a bundle of second material in the form of conductive fibers adjacent the first pair of rollers of the drawing frame, feeding the conductive fiber bundle into the back rollers of the drawing frame simultaneously with the textile material fiber bundle, and guiding the textile material fiber bundle and the conductive fiber bundle relative to each other such that the latter continuously cushions the textile material fiber bundle with respect to the draw rollers when passing therethrough.

Abstract: For automatic feeding of slivers through drawing rollers there is provided a sliver-processing frame having drawing rollers, tubes for conveying slivers to be drawn and a plurality of suction elements connected to a common source of low pressure wherein the drawing rollers are enclosed in a casing of which the interior is connected to the source of low pressure the casing having inlet orifices for admitting cleaning air to the surfaces of the drawing rollers, one end of each tube leading into the casing.

Abstract: The spindles of a flyer spinning frame are each mounted in respective chambers which are defined by telescopically slidable rings. The lowest ring on each sleeve is sealingly fixed on a spindle rail, while the uppermost ring on each sleeve is attached to a common, vertically movable support. The chambers, which are open at the top, are connected to the suction side of a ventilating fan by ducts, which extend through the spindle rail, and by flexible lines.

Abstract: Device for aligning and attenuating soft or brittle fiber mats employing a rotating vacuum roller for gently grasping the fiber mats under sufficient compressive force to hold the same without breaking or otherwise damaging the fiber mats.

Abstract: A draw frame device for spinning machines is provided which includes a preassembled auxiliary draw frame stand formed of a hollow longitudinal pipe member having a plurality of supports welded thereto. The supports are configured for holding supporting rods for supporting upper rolls and loading arms, as well as for supporting lower rolls of a draw frame. Adjustable fastening means are provided at each of the respective opposite ends of the longitudinal member for adjustably connecting the preassembled auxiliary draw frame stand to a hollow longitudinal draw frame stand member of a spinning machine.

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.