Abstract: A supporting disk for providing bearing support to a rotor of an open-end spinning machine, the supporting disk including a bearing ring and a supporting ring which is made of an elastic polymeric material and mounted on the periphery of the bearing ring. The bearing ring has a side ring on at least one of the sides of its outer edge. The side ring is located at a distance from the outer edge, connected to the bearing ring via holding members, and is also provided with a supporting ring on its periphery.

Abstract: It comprises a bowl (2) driven positively in rotation and a guide finger (3) which is spaced from the bowl (2) and is mounted on an arm (6) articulated relative to a support (7) mounted on the frame of the machine.The shaft (8) supporting the bowl (2) is equipped with a drive roller (12) which, in the working position, bears against a drive shaft extending over the entire length of the machine and common to all the workstations which the latter comprises.The articulated arm (6) is associated with means which, on the one hand, hold the drive roller (12) in bearing contact, with adjustable pressure, against the drive shaft during normal operation and, on the other hand, are neutralized when the articulated arm is moved away from said drive shaft.

Abstract: A support disk assembly and a method of producing a support disk (1) for the bearing of a spinning rotor. The support disk assembly (1) has an exchangeable annular collar (4) that can be secured between fastening rings (5, 6, or 17). The collar (4) has side surfaces (8,9) that extend parallel and orthogonally to the center axis (M) of the support disk assembly in a radially inward annular region (P). The side surfaces (8,9) located in a radially outward annular region (K) of the collar (4) extend convergently and are partly clamped by flanges (14) on the fastening rings (5, 6, or 17), leaving the peripheral bearing surface (10) of the collar exposed for supporting engagement of the rotor shaft.

Abstract: A supporting disk for the rotor of an open-end spinning machine, comprising a hub ring of metallic material and a support ring made of elastomer polyurethane that is affixed to the outer surface of the hub ring, whereby the support ring is affixed to the outer surface of an auxiliary ring consisting of polymer material. The material of the auxiliary ring has a modulus of elasticity of 7000 to 13,000 N/mm.sup.2, a dimensional stability under heat from 150.degree. to 250.degree. C., as well as an elongation at break of 1.3 to 3%. It is affixed with radial widening of its inside diameter and with an interference fit to the outer surface of the hub ring.

Abstract: A supporting-disk bearing, particularly for the shaft of an open-end spinning rotor, the shaft (1) being mounted in a wedge-shaped gap formed by supporting disks (4, 5), and the supporting disks (4, 5) having a running surface (40,50) consisting of an elastic covering against which the shaft (1) is pressed. The running surface (40,50) has at least one interruption formed by a recess and bridged by the line of contact of the shaft (1). The recess can be designed in various ways, but it is preferably groove-shaped. The wear of the running surface is reduced as a result of this design.

Abstract: A supporting disk apparatus for engagement with an open-end spinning rotor shaft is provided. Supporting disk elements are provided for engaging the rotor shaft. The supporting disk elements include an outer circumference area providing a running surface for the rotor shaft. The outer circumference area is constructed such that this area is elastically deformed by the rotor shaft. Ring groove elements are provided around and extend into the supporting disk elements outer circumference area. The ring groove elements have a depth in a radial direction of the supporting disk elements slightly larger than the elastic deformation of the outer circumference area in the radial direction of the supporting disk elements which is caused by the rotor shaft. This supporting disk apparatus provides a reduction of heat build-up of the running surface of the supporting disk elements.

Abstract: A spinning frame roller comprising a core body on an outer peripheral surface of which is provided a circumferentially continuous, radially reentrant dovetail channel, with a correspondingly configured peripheral annular ring having a radially inwardly extending dovetail protrusion on its inner face matably engaging the dovetail channel and outer peripheral surface. The peripheral annular ring has an aspect ratio (radial thickness/axial thickness) of from about 0.25 to about 0.65, and is formed of a material having a durometer value of from about 55 to about 90. The roller in use is mounted on a shaft in a spinning frame for textile processing applications, and achieves extended wear and reduced tendency to "throwing" of the peripheral annular ring, relative to prior art rollers characterized by low durometer, high aspect ratio peripheral annular rings.

Abstract: A bearing disk construction is disclosed for an open end spinning rotor at a spinning unit of the type having a rotor mounted on a rotor shaft, a twin disk bearing arrangement for rotatably supporting the rotor shaft and a tangential belt drivingly engaging the rotor shaft of the radial side thereof opposite the twin disk arrangement. The bearing disks are formed with a metallic base body and a plastic fitting around the circumference thereof which directly supportingly engages the rotor shaft. To minimize heating of the system during high speed operation, the plastic fittings are provided with a circumferential ring groove which is geometrically configured to optimize bearing support and heat dissipation. The plastic fitting is anchored in a groove at the circumference of the base body by moulding the plastic at the base body.

Abstract: An open-end friction spinning machine is disclosed which has a large number of spinning units arranged next to one another, each containing two friction rollers arranged next to one another to form a wedge-shaped yarn forming gap. By means of a joint drive the friction rollers are driven in the same rotational direction. A servicing apparatus is provided which in each case can be applied to a spinning unit, said servicing apparatus having an auxiliary drive for the friction rollers, said auxiliary drive containing an auxiliary drive element that can be applied simultaneously to the shell surfaces of both rollers.

Abstract: On a ring spinning or twisting frame having winding units with rotatable thread follower rings, the difference in the speed of rotation between the ring and its follower during the restarting of the winding unit, after repair of a thread break, is maintained within acceptable limits while the frame continues to run at its high operational speed, by controlling the rotational speed of either the ring or the spindle, the speed of the controlled element being varied either continuously, or in one or more steps during the restarting operation.

Abstract: A friction disc for rotating a twisting tube of a false twisting device for crimping thread is provided with a peripheral surface which slings any oil on the surface therefrom. The peripheral surface of the disc has an annular groove therein which is substantially frusto-conically shaped in cross-section and intersects the surface at an angle to provide an edge from which the oil will be slung by centrifugal force as the disc rotates.

Abstract: An open end spinning device or a false twisting device having two mutually parallel pairs of rollers for driving a spinning rotor or a twisting tube and a horseshoe-shaped magnet associated therewith for retaining the twisting tube or rotor in a wedge-shaped nip between the pairs of roller, each pole of the magnet acting on a collar on the rotor or twisting tube and being provided with a recess extending parallel to the axis of rotation of the rotor or tube and having a semi-circular cross-section to receive the collar is provided with a magnet having one pole shaped so that upon axially displacement of the rotor or tube away from its normal position by pull of the thread each of the collars still lies opposite the magnet at least at the base thereof.

Abstract: Devices for false-twist texturing textile filaments are described wherein a twist tube is rotated while magnetically held in a wedge shaped gap between a driven roller and a supporting roller which is rotated by power transmitted thereto predominantly by a rotary driving member in frictional contact with the two rollers. This driving member may be a cylindrical pin in the wedge shaped gap opposite that containing the twist tube and held in the gap by magnetic attraction or repulsion. Alternatively the driving member may be a roller mounted freely to rotate about its axis in frictional contact with roller surfaces on shafts carrying the driving and supporting rollers.

Abstract: A method of reconditioning tubular, multi-bobbin wire stranders employing under-roller supports in contact with radially protruding load bearing surfaces which comprises reducing the circumference of said surfaces while machining said surfaces to within 0.001 inch tolerance, providing said supports with an increased roller circumference and machining said circumference to within 0.001 inch tolerance, and placing said supports in fixed position to said surfaces whereby said supports are leveled to within 0.002 inch per foot of the centerline of said strander. The above method reduces the incidence of maintenance and can reduce the noise generated by the stranger by as much as 15 dBA.

Abstract: A friction roller for rotating twist tubes in twisting apparatus in which the friction ring is protected from contact with ambient oil by means of a protective coating and a slinger edge disposed on at least one side of the friction ring. The protective layer may be a protective ring which may be integral with the roller or it may be a protective layer of lacquer applied to the friction ring. The layer protects the friction ring from the spinning oil and the slinger edge acts to fling off by centrifugal force that oil which collects around the periphery of the friction roller so that the running surface of the friction ring remains unaffected.In one embodiment the slinger edge projects radially beyond the running surface of the friction ring and there is a peripheral groove on the associated twist tube which cooperates with the slinger edge in the manner of a labyrinth seal, which increases the protection against adverse influences from the spinning oil.

Abstract: A friction disc is described for very quietly driving twist tubes at several hundred thousand revolutions per minute in a false-twist device for texturing synthetic filaments. The disc has a titanium alloy support flange having a specific electrical resistance of between 1 and 2 .OMEGA./mm.sup.2 /m, a modulus of elasticity of at least 6500 kg/mm.sup.2 and an ultimate tensile strength of at least 25 kg/mm.sup.2. The support flange has a circular cylindrical circumferential surface which fits and is rigidly fixed to the internal surface of a polyurethane friction ring, the external cylindrical surface of which frictionally drives the twist tube. A twist tube driving roller has two such discs spaced apart on a steel driving shaft.

Abstract: An open end yarn spinning apparatus wherein the member that includes the collecting surface that, in operation, is rotated while having deposited on it fibers to be spun into yarn includes a shaft which is rotationally supported by shaft-mounted rollers of substantially greater diameter than the diameter of the part of the collecting surface shaft engaged thereby, and wherein an opening roller is mounted on a shaft of one of said shaft-mounted rollers to rotate therewith.