Abstract: A device and a method for winding and twisting fibrous material in ring spinning and ring twisting frames are disclosed. The device and method allow the operating speed of the frames to be substantially increased, achieve higher productivity during ring spinning, and reduce the outlay, in terms of time and material, for assembling and servicing the device. This is achieved in that at least two high-temperature superconducting stators, together with the thermally connected cooling devices thereof, are arranged in a contactless manner and in parallel with one another along the progression of the spindle row, and the magnetic field-generating rotors, oriented coaxially with respect to the spindle, are introduced in a magnetically levitating manner in the magnetic field of the continuous intermediate space, between the stators which are adjacent in each case.

Abstract: A slide member of the present invention is used in a slide unit which is included in a refrigerant compressor for compressing a refrigerant and provided inside a sealed container which reserves lubricating oil therein. The slide member is provided with an oxide coating film on a surface of a base material. The oxide coating film is configured such that (1) when the base material comprises an iron based material, the oxide coating film has a three-layer structure including a first layer comprising Fe2O3, a second layer comprising Fe3O4, and a third layer comprising FeO in this order from an outermost surface, (2) the oxide coating film has a dense structure having minute concave/convex portions with a height difference which falls within a range of 0.01 ?m to 0.1 ?m, or (3) when the base material comprises the iron based material, the oxide coating film has a three-layer structure in which the three layers comprise the iron oxides and are different in hardness.

Abstract: The invention is directed to hybrid yarns which include plant bast fibers and thermoplastic fibers, reinforcing fabrics made from such yarns, and reinforced composites made from such yarns and fabrics.

Abstract: A spinning ring, in which a ring flange portion 101 making a track permitting a ring traveller to run thereon is divided into an inner flange 103 and an outer flange 106, the inner flange 103 is continuously formed from a sheet steel, the outer flange is formed together and integral with a ring neck portion 109 and a mount portion 102 by cutting, the inner flange 103 and the outer flange 106 are secured to each other by a securing means, and a ring flange portion 101 is provided in an upper portion of the spinning ring 100. The spinning ring enables enhancing the ring flange portion in accuracy and wear resistance, and preventing fine vibrations of the ring flange portion from causing abnormal wear of and shortening of service life of a ring traveller and the ring flange portion and frequent yarn breakage leading to reduction in productivity and falling-off of the ring flange portion due to shock.

Abstract: The invention relates to a refrigerating-lubricating cursor ring that can be used in ring twisting machines, continuous ring spinning machines and double twisting machines. Said ring serves as a guide for a cursor (3) and comprises a cylindrical, hollow ring (1) made of a porous material, said ring being provided with chamber (6) into which an air-lubricant/refrigerant mixture is injected by pressure, thereby creating an air cushion between the ring (1) and the cursor (3) that prevents mutual friction, lubricates the contact area between said ring and cursor and cools them to prevent wear and heating of the ring (1) and cursor (3) at high speeds. This makes it possible to significantly increase the working speed of the rings in twisting and continuous spinning machine.

Abstract: A ring for a ring spinning or a ring twisting machine, comprising an annular polished core and a hard chrome layer, wherein the core is coated with a copper layer, and wherein the hard chrome layer is applied to the copper layer.

Abstract: The invention provides spinning rings for textile spinning processes having an improved bearing surface formed of a coating of amorphous chromium that is typically applied by an electrodeposition process. The amorphous chromium coated spinning rings of the present invention impart a durable spinning ring that can be used in fine yarn, high speed spinning operations without the need to provide for a conventional break-in period.

Abstract: A take-up unit for take-up of a synthetic filament yarn (1) onto a cop (2), with a rotary drive (3) which carries the cop (2) and which causes the cop (2) to rotate at a speed which can be stipulated, with a balloon thread guide (5) which is located in the axial direction at a considerable distance from the cop (2), with a ring holder (6) which surrounds the cop (2) at a constant radial distance with a race located therein and a ring traveler which runs on the race, with a ring holder drive (9) which carries the ring holder (6) and which moves the ring holder (6) back and forth parallel to the longitudinal axis of the cop (2) between the ends of the latter, take-up of the filament yarn (1) onto the cop (2) taking place according to stipulated cop generation factors and such that the cop (2), at the conclusion of take-up, has a roughly cylindrical middle area of large diameter and end areas with diameters which decrease towards the ends of the cop (2) except for the raw diameter of the latter.

Abstract: The present invention is for spinning ring for winding a yarn fed from a raw yarn bobbin on a bobbin including a stationary ring that is mounted on a ring rail. A rotary ring is disposed inside and concentrically with the stationary ring for rotation about the central axis thereof. The bobbin is disposed inside and concentrically with the rotary ring for rotation about the central axis thereof. A traveler is disposed on the rotary ring for revolution in the circumferential direction of the rotary ring to guide the yarn fed from the supply bobbin with respect to the bobbin. When the bobbin is rotated substantially at normal operating speed, the speed of the traveler and the rotary ring are rotated substantially in unison with each other relative to the stationary ring.

Abstract: A spinning ring structure for use on a spinning frame comprises a stationary ring fixedly held in place, a rotary ring fitted in the stationary ring coaxially with the stationary ring so as to rotate about its center axis and provided with an annular flange at its upper end, a traveler put on the flange of the rotary ring for traveling along the flange to guide a yarn to a bobbin disposed coaxially with the rotary ring. Openings are formed through a neck portion of the rotary ring, whereby flies produced during the spinning operation by friction between the yarn and the traveler are discharged outside the spinning ring structure through the openings due to centrifugal force.

Abstract: The invention provides spinning rings for textile spinning processes having an improved bearing surface formed of a coating of hard nodular chromium which is applied by an electrodeposition process. The spinning rings of the invention can increase the life of travelers that ride on the spinning ring and can provide for high productivity spinning processes.

Abstract: Disclosed is a method for the coating of textile spinning machinery parts with a composite coating bearing finely divided lubricating particles dispersed within a hard metallic matrix. The lubricating particles are particulate matter capable of withstanding heat-treatment temperatures of at least 300.degree. C. without their degradation.

Abstract: A method for manufacturing a twisted yarn includes the step of removing two rovings from two separate supplies and passing each roving through a separate drawing device. From each roving a separate spun yarn is produced by ring-spinning. Each spun yarn is collected in the form of a bobbin on a yarn carrier of separate hollow spindles, wherein the separate hollow spindles are positioned atop one another. With formation of a yarn balloon the spun yarn is withdrawn from the bobbins and guided through the hollow spindle axle of the respective hollow spindle. The spun yarn withdrawn from the upper one of the hollow spindles is guided through the hollow spindle axle of the lower one of the hollow spindles. Both spun yarns are then guided together to a winding device positioned below the lower one of the hollow spindles. The hollow spindles are rotated as a function of the winding speed of the winding device such that a twist of the spun fibers is at least partially canceled.

Abstract: A ring-spinning or ring-twisting machine with a ring rail having rings and travelers for each spinning or twisting spindle. The horizontal ring rail is displaceable on rigid vertical rods, the lower ends of which are connected to vertical stretches of flexible traction elements which lie substantially in the vertical plane of the weight axis of the ring rail.

Abstract: Disclosed is an improved ring and traveller system for spinning and twisting frames. At least the surface of the ring coming into contact with the traveller consists of a polycrystalline ceramic material and the ceramic surface of the ring has a surface structure with rounded grain boundaries which form a storage volume for a self-generating lubricating film of fibers. The traveller consists of a resilient carrier material, especially metal, and has a metal and/or ceramic surface, the hardness of which is greater than the hardness of the ceramic surface of the ring.

Abstract: A method for optimizing the spinning geometry of a spinning machine in which the lengths of the path segments between the drafting output and rolls and the yarn guide, between the yarn guide and the balloon constricting ring, between the balloon constricting ring and the traveller, or other angles are controlled in response to the yarn break frequency and/or spinning force and, when necessary, the spindle speed is also controlled to minimize the spinning force. The system can use a fuzzy logic.

Abstract: A spinning ring of a ring spinning machine has an inclined flange which is configured such that a travel surface at the inner surface of the spinning ring has a radius (R2) which amounts to about 25 mm. and which merges into a radius (R1) which, at the location of the smallest inner diameter of the spinning ring, amounts to at least 1 mm. A rim or bead at the travel portion of the spinning ring has a height (H) which at most is about one-half larger than the thickness (K) of the rim. Consequently, there can be used travellers having small outer dimensions, so that there can be selected a larger wire thickness of the traveller material. In this way, the service life of the traveller in the ring spinning machine is increased in relation to the prior art.

Abstract: A composition for coating rings or travelers employed in yarn spinning applications is provided. The particular composition comprises an iron replacement composition such as copper selenide. The coating may be applied to rings and travelers in thicknesses of from about 0.001 mils to about 0.05 mils. The coating provides a low friction but high wear resistant surface between the traveler and a ring.

Abstract: A ring for use in spinning machinery such as ring spinning machines and twisting machines, which is usable at a high spindle revolutionary speeds of 20,000 r.p.m. The ring comprises a ring flange, a neck part, a collar and a trunk part. The trunk part has a ring fitting part and is provided, at the surface which contacts at least the ring traveller, with a composite plated layer of nickel and phosphorous alloy containing hard fine grains. The ring is further treated with heating and polishing processes to increase hardness and smoothness of the surface to thereby improve anti-wearing properties and heat-resistance properties.

Abstract: Rings and travelers such as for use on spinning frames and the like are provided with the improvement of a coating on the respective surfaces thereof, the coating being chemically deposited onto the surfaces and being uniform in thickness about each surface, the uniform thickness of the coating on each surface ranging from about 0.1 mil to about 0.5 mil, the coating including from about 15% to about 30% by volume of a particulate polymeric fluorocarbon, preferably polytetrafluoro-ethylene, dispersed in a metallic matrix which is preferably a nickel-phosphorus alloy matrix.

Abstract: A ring for spinning machinery is made of alloy steel containing Cr 0.9-26% as basic material. The basic material is cut in the desired ring shape, is subjected to gas carburizing, quenching, subzero treatment and tempering and is finally subjected to a grinding. This ring has a surface layer in which carbide occupies 30-90% in the rate of area, with a surface roughness which has an average roughness of less than Ra 0.25 .mu.m at a center line.

Abstract: Improvements in a spinning ring assembly for textile twisting apparatus are disclosed. A support structure that is attachable to a twisting unit supports an inside friction ring by means of a freely rotatable bearing assembly. A traveler is positioned on an upper surface of a spinning ring for free movement. The spinning ring is carried by an intermediate free supporting ring which is in contact with the inside friction ring.

Abstract: A ring for spinning comprising a flange portion, a neck portion and a trunk portion having a ring rail fitting-in part for use on ring spinning machines, twisting machines, etc. At least that portion of the ring which will contact a traveller is formed of ceramics, or the surface of said portion is formed of a ceramic coated layer, to attain high strength of the surface, smoothness in the surface, improved abrasion resistance, improved heat resistance, improved corrosion resistance and high spindle speed of more than 20,000 r.p.m.

Abstract: A traveller for spinning made of hard drawn steel wire or alloy steel wire, having at least at the surface of a part which makes contact with a ring a ceramic coated layer. The ceramic coated layer consists of one or plural layers selected from a layer of carbide, nitride, oxide, boride or the like. The traveller with a ceramic coated layer has high wear resistance, runs stably for many hours, prevents frequent yarn breakage and has longer service life.

Abstract: A universal traveler is provided for ring spinning machines, the traveler being structured to permit repositioning of the traveler on the ring after a portion of the traveler has been worn.

Abstract: In a spinning or twisting machine, a anti-balloon ring stationarily fixed around the bobbin spindle is first sand-blasted so as to produce a predetermined degree of surface roughness, then provided with a nickel coating in order to reduce undesirable excrescences followed by a copper coating in order to reduce friction and loss of yarn resistance while permitting much higher spindle speeds in respect of an acceptable rate of wear.

Abstract: The ring mount is of a two-piece construction and includes a hard plastic mounting support fixed in an annular opening in the ring rail. An annular recess is provided in the upper inner portion of the mounting support. A soft plastic insert is adapted to closely fit within the annular recess of the mounting support and is provided with an annular groove in the inner surface which is adapted to receive and support the lower flange of the ring. The two-piece ring mount is positioned between the metallic ring rail and the metallic ring and provides noise and vibration dampening means for resiliently supporting the metallic ring on the ring rail.

Abstract: A method and apparatus for winding and twisting yarn onto a spool directly from an extrusion line or other production source by means of an inline twister. The inline twister comprises the following elements: a rotatable spindle, a bottom flange securely fastened to the spindle having a catch on the outer periphery, a removable interlocking top flange positioned on the spindle, means for positioning the spool concentrically about the spindle, a twister ring concentrically positioned about the spindle having a slit, and a rotatable traveler positioned on the twister ring having a hook inwardly directed toward the spindle.The method of winding and twisting the yarn onto a spool comprises guiding the yarn adjacent to the spool. This yarn is then positioned adjacent to the slit in the twister ring and is allowed to pass therein. The spindle on which the spool is contained is then rotated so that the catch-equipped bottom flange contacts the yarn and holds it tight.

Abstract: Operatively connected with a spinning ring of a ring spinning or ring twisting machine is a tubular inner ring at a small distance, the upper limit or boundary of such inner ring being located at a higher position than the traveller guide surface defined on the spinning ring, in such a manner that unthreading of the thread, which no longer is tensioned by the traveller is rendered impossible. Also the inner ring and/or the spinning ring are provided with at least one slot-opening by means of which traveller debris can escape. Furthermore the distance of the outer upper edge of the inner ring from the traveller guide surface is to be chosen sufficiently large, so that upon restarting of the winding process the traveller does not collide with the inner ring.

Abstract: A spinning ring formed of steel for ring spinning and ring twisting machines is partially hardened, i.e. in a locally limited zone of the spinning ring. At this zone there is located a traveller flange having a traveller guide surface. The spinning ring is consecutively provided in such zone with an outer running-in surface, which is softer in comparison with the hardened steel, and with a hardened core. The running-in layer is provided with an outer ferro-nitride layer adjacent to which there is provided an austenitic-martensitic transition layer containing nitrogen which continuously merges into the structure of the hardened zone, and the austenitic content of which decreases towards the inside, and the hardness of which thus increases. The traveller, upon wearing-off of the ferro-nitride layer can reach the increasingly harder and more wear resistant transition zone.

Abstract: A method and apparatus for winding and twisting yarn onto a spool directly from an extrusion line or other production source by means of an inline twister. The inline twister comprises the following elements: a rotatable spindle, a bottom flange securely fastened to the spindle having a catch on the outer periphery, a removable interlocking top flange positioned on the spindle, means for positioning the spool concentrically about the spindle, a twister ring concentrically positioned about the spindle having a slit, and a rotatable traveler positioned on the twister ring having a hook inwardly directed toward the spindle.The method of winding and twisting the yarn onto a spool comprises guiding the yarn adjacent to the spool. This yarn is then positioned adjacent to the slit in the twister ring and is allowed to pass therein. The spindle on which the spool is contained is then rotated so that the catch-equipped bottom flange contacts the yarn and holds it tight.

Abstract: This invention relates to a spinning and twisting device designed for fitting to the ring support carriage of continuous spinning and twisting machines, the so-called ring spinners, as a replacement for the traditional ring slider devices on the said carriage. The device according to the invention comprises an annular stator member, an annular rotor member rotatably coupled to said stator in such a way as to be axially aligned therewith and with the relative spindle of said machine, and provided with a passage for the thread being worked, which rotates it, and braking means disposed between the stator member and rotor member.

Abstract: A textile spinning ring for use with a traveler having a yarn-engaging loop extending above a C-shaped ring-engaging traveler body, has means for preventing the yarn from becoming hooked under the traveler body rather than under the loop when the traveler is pieced-up in preparation for spinning. An annular flange configured to conform with the shape of the traveler extends inwardly from the body of the annular ring, the flange presenting a profile lower than the profile of the ring body. A low-profile bridge connects the flange with the ring body, and forms a recess which contains the ends of the traveler body. The flange, bridge and ring body are further configured and dimensioned so that the upper surface of the traveler body is substantially flush with the upper surface of the ring body when the traveler is resting on the flange.

Abstract: Generally C-shaped ring travelers, designed for movement along the inside of a ring of a yarn twister or like machine and having, for the purpose of minimizing aerodynamic resistance, overall drop-shaped or streamlined cross-sectional contours at all essential transverse planes, are disclosed. The cross-sectional configuration is characterized by an oblong shape having a relatively wider or blunt leading edge and a relatively narrower or less blunt trailing edge. The foot of the traveler has a pair of laterally offset, generally vertical guide surfaces, which face outwardly of the ring and are somewhat convexly shaped to a degree approximating the ring curvature, for engaging the inside edge of the ring flange and the inside face of the web of the ring, and bridging the space between those surfaces a generally horizontal guide surface for engaging the underside of the inner ring flange.