Abstract: To produce a mock yarn which is similar in appearance to a true yarn with respect to the ability to discern the components of the mock yarn after the twist has been imparted to the mock yarn, the rovings or slubbings forming the mock yarn, after drafting separately but parallel to one another in a drafting frame, are subjected separately to condensing and compaction by suction rollers or belts provided with rows of perforations. Thus compacted and condensed rovings are then combined, twisted and wound up as mock yarns. A core thread can be introduced into each roving or into at least one of the rovings upstream of the last pair of drafting rolls or immediately upstream of the condensing unit for a core mock yarn.

Abstract: A spinning machine in which downstream of the drafting frame and as part thereof, beyond the output rollers thereof, a suction roller is provided above the roving and cooperates with at least one counterroller below the roving to condense the roving before it is wound up on a ring-spinning or pot-spinning station.

Abstract: A curved pipe segment, preferably a U-bend made from a silicon carbide-containing material having a body portion with an inner and outer surface, an inner bend circumference of curvature and an outer bend circumference, and an inlet end and an outlet end, said pipe segment having an integrally molded support flange extending from the outer surface near the center of the body portion, along the outer bend circumference.

Abstract: Apparatus for driving interweaving threads in a yarn-forming unit of a chenille machine comprising, for each of the two sides of a gauge (1) on which the fuzzy thread is wound and sized, a pair of rollers (3, 30) forming a calender for driving two interweaving threads to be twisted in order to engage the lengths of the fuzzy thread. Of the rollers (3, 30), the upper one (3) of at least one of the two pairs is provided with a plurality of radial channels (31) associated to air-suction device to pull in the lengths of fuzzy threads being cut by a blade (2) towards the respective edge, at least over an arc thereof instantaneously facing the gauge (1) during the rotation of the rollers (3, 30) of the pair.

Abstract: A supporting disk for a rotor of an open-end spinning machine comprising a hub ring made of metallic material and a support ring made of polymer material affixed to the outer circumferential surface of the hub ring, the outer circumferential surface of the hub ring engaging the inner circumferential surface of the support ring. The support ring extends beyond the hub ring in the axial direction on both sides with an equal projecting length.

Abstract: A drafting equipment is provided with a small double belt for spinning machines with a fiber bundling zone which follows the pair of output rollers of the main drafting field and is followed by a pair of delivery rollers. A pneumatic compression device is provided between the pair of output rollers and the pair of delivery rollers. A pneumatic compression device is provided with a small perforated belt and a suction device extending on the side of the belt away from the fiber sliver and which sucks air through the fiber sliver between the pair of output rollers and the pair of delivery rollers.

Abstract: Apparatus for monitoring yarns on spinning machines includes a sensor which is disposed such that it can travel along a track in front of the production stations. In order to permit each spinning station of a spinning machine to be monitored to an extent such that mavericks and other forms of unevenness in the yarn can be located, the sensor (2) is formed and disposed to detect the diameter of the yarn.

Abstract: A braided structure produced by strands of a braiding material consisting of multiple yarn ends of multifilament fibers oriented side-by-side or in parallel to form a generally single layer band of yarn ends and treated with a suitable forming material in order to set such orientation. The braiding material can then be used to form strands for producing a braided structure. The braided structure resulting from the braiding material of our invention has a high coverage area and a high width to thickness ratio.

Abstract: The low-shrinkage hybrid yarns comprise reinforcing filaments and matrix filaments composed of thermoplastic polymers having a lower melting point than the melting or decomposition point of the reinforcing filaments. The yarns are characterized by a 160.degree. C. hot air shrinkage of not more than 2% and a 200.degree. C. hot air shrinkage of not more than 5%. A process for producing these hybrid yarns includes the steps of feeding yarn strands moving at different speeds into an entangling jet, heating a matrix feed yarn during the feeding thereof into the entangling jet, entangling the feed yarn strands, and taking off the strands with or without shrinkage and additional heating.

Abstract: In a method of producing poly(trimethylene terephthalate) yarn from PTT chip which has been extruded through a spinneret into filaments and coated, the coated filaments are passed between an unheated feed roll and a tension roll to tension them without causing permanent stretching, and then are passed from the tension roll to a heated draw roll to draw the filaments in a single draw step to a draw ratio of 1.25 to 4.0 and to heat them to a temperature between their glass transition temperature and their crystallization temperature.

Abstract: A steel cord according to this invention comprises two core wires and five outer wires each having a diameter larger than that of each core wire and integrally twisted on the core wires, wherein a strand constituted by the five outer wires and the two core wires has an oblong cross-section.

Abstract: An open-end spinning device (1) with a spinning rotor (3) whose rotor cup rotates at a high speed in a vacuum-loaded rotor housing (2) closable by a conduit plate (27). The spinning rotor (3) is supported with its rotor shaft (4) in the bearing nip of a support-disk bearing (5) free of axial thrust and positioned in axial direction by a magnet bearing (18). The direction of rotation (S, Z) of the spinning rotor (3) can be selectively set via the direction of the rotor drive (V or R). The conduit plate (27) comprises a receptacle (34) in which exchangeable conduit-plate adapters (12.sub.S or 12.sub.Z) can be fixed in coordination with the particular direction of rotation (S or Z) of the spinning rotor (3).

Abstract: A method of and an apparatus for making twisted electrical cable, such as 600 volt secondary distribution (UD) cable, and the twisted cable product are disclosed. The apparatus comprises a first plurality of stationary payoff reels each wound with a length of stranded bare wire conductor. The stranded conductors are simultaneously payed off the reels to a pay out accumulator for accumulating a portion of the stranded conductors during replacement of spent pay out reels. An extruder apparatus arranged downstream of the accumulator applies a plastic insulation material to a respective stranded conductor as it passes through the extruder. A cooling trough through which water is flowed cools the plastic insulation. A take-up accumulator arranged downstream of the cooling trough accumulates a portion of each insulated conductor during changeover of the take-up arranged downstream of the take-up accumulator.

Abstract: For piecing a yarn end at a spinning station of an open-end rotor spinning machine, the previously stopped feed roller is re-activated for a short pre-feeding period. The fiber beard, which has been thinned out by the still rotating open roller, can thus renew itself. The fibers which are combed during this pre-feeding period are removed as waste when the spinning rotor is at a standstill. After completion of the pre-feeding period, the feed roller is rotated in reverse so far back until the fiber beard leaves the area of effect of the opening roller. The feed roller is activated again for the actual piecing process.

Abstract: Threads (15) are handled in spiralling or covering machines with improved efficiency by replacing traditional bobbins (20) with double-coned bobbins (10) which include flanges (22) at both ends and by providing that the outside edges of the flanges do not project beyond the level of the unwinding thread.

Abstract: This invention relates to a new cable-twisting process for making yarns suitable for use in carpets. The process involves cable-twisting together two component yarns. At least one of the component yarns comprises two singles yarns co-twisted but not cabled together. The singles yarns may be differentially colored to provide the resulting multi-colored cable-twisted yarn with good color separation and vividness.

Abstract: The present invention relates to a high strength steel cord(1) for pneumatic tires, which is produced by the process of drawing high strength carbon steel with carbon content of 0.91.about.2.0% by weight, plating brass on the surface of the carbon steel so that it adheres to the rubber and repeating the drawing and stranding of said carbon steel. In particular, as the steel cord is composed of a filament of two strips, the steel cord according to the present invention is of a higher strength than conventional steel cord, and therefore when it is applied to a tire, the amount of steel cord and rubber topping used can be reduced, thereby resulting in a lighter weight tire, cost savings and lower fuel consumption rate.

Abstract: The present invention concerns a process and an apparatus, in particular a rotor cover (3) and a thread withdrawal tube (2), of an open-end spinning machine, for the pneumatic cleaning of the thread withdrawal tube (2) which has an irregular inner contour. In this arrangement, there opens into the zone of the irregular contour (24, 220) of the thread withdrawal tube (2) an air feed tube (6, 60) directed against the irregular interior contour (24, 200) into the inner space (25) of the thread withdrawal rube (2), through which a flow of air is conducted against the irregular inner contour (24, 220) of the thread withdrawal tube (2). The irregular inner contour (24) of the thread withdrawal tube (2) is formed by means of a disassembly point between two thread guiding elements (20, 21, 22, 23) arranged in sequence, the elements making up the complete thread withdrawal tube (2) or a twist element (220).

Abstract: A process for open-end spinning provides for at least one sliver being opened into single fibers. A wide fiber veil is formed from parallel single fibers extending in the direction of motion, which fiber veil is fed to a transporting surface by means of a moving collecting surface. The single fibers are transferred from the collecting surface to the transporting surface at a transfer point, whereby the direction of motion of the fiber veil is abruptly changed, however the current relative position of the single fibers remaining essentially constant. This motion direction change occurs at the transfer point, with the respective front part of the fiber veil being transferred to the transporting surface as a fiber group in a predetermined sequence, and the transporting surface moves transversely to the direction of motion of the collecting surface.

Abstract: A support disk bearing (1) for an open-end spinning rotor (9) with support disks (4, 5) arranged in pairs, each of which has a hub body (14) made of a metallic material and a bearing ring (15) made of a polymeric material. On its circumference, the hub body (14) has a radial circumferentially extending profiling (20), between whose V-shaped center structure (21) and lateral ribs (22, 23) the free flanks (24, 25) of an M-shaped bearing ring (15) can be fixed, and which has a thickness (D) which is almost constant in cross section.