Abstract: A bearing race ring, especially for high-speed applications, e.g. in jet engines, turbines and high-speed power plants, comprises an annular metallic body formed along one of its inner or outer surfaces with axially extending grooves which are inclined to the axis of the ring. Preferably each groove begins at a level at which an adjacent groove terminates and the angle which the groove makes with the longitudinal axis is defined by the formula ##EQU1## WHEREIN .alpha. IS THE AFOREMENTIONED ANGLE, D IS THE DIAMETER OF THE SURFACE PROVIDED WITH THE GROOVE, N IS THE NUMBER OF GROOVES AND B IS THE WIDTH OF THE RING.

Abstract: A generally cylindrical metallic member of hardened steel, especially a race for a journal bearing, is fitted into or around a supporting element of relatively deformable metal, such as structural steel, having a face perpendicular to the cylinder axis. The hardened metallic member has a peripheral groove into which some of the material of the supporting element is extruded by indenting the perpendicular face, preferably by a circular array of notches.

Abstract: An apparatus having three spindles carrying overlapping friction discs disposed with their longitudinal axis forming in plan view the corners of an equilateral triangle is provided with a centrally disposed fourth spindle carrying a means for simultaneously and equally adjusting the positions of all three spindles with respect to the track of the thread to be false twisted.

Abstract: A hydrostatic journal bearing for a shaft of a heavy load, such as a metallurgical vessel, comprises an inner ring of spherical outer surface rigid with the shaft, a stationary base forming part of a housing, and a segmental shell resting on the base as a cradle for the ring. The upper shell surface has pockets for high-pressure oil, supporting the ring in operation, while the lower shell surface has similar pockets near its axially extending edges designed to maintain the shell curvature close to that of the ring. The shell may be split into two relatively axially shiftable coaxial subshells with further oil pockets at their interface.

Abstract: A ball or roller bearing with two symmetrical halves, each designed to absorb both radial and axial stresses, comprises two axially abutting inner rings on a shaft and two axially abutting outer rings in a housing wall coaxially surrounding the shaft. The inner rings form seats for respective rows of balls or rollers engaging contact zones on the inner peripheral surfaces of the outer rings that are offset from these seats in either an axially inward or an axially outward direction. In the first instance, the housing wall has an annular groove aligned with an annular recess or groove of the same axial width which is formed by two peripheral rabbets on the outer rings; in the second instance the inner rings are rabbeted to form an annular recess or groove aligned with an axially coextensive peripheral groove on the shaft.

Abstract: A pair of relatively rotatable support members, separated by a gap centered on the axis of rotation, engage each other through a multiplicity of elastically deformable sliding heads of low-friction plastic material projecting from one support member into the gap and resting against a confronting contact surface of the other support member. Each sliding head is tightly embraced by a rigid retaining sleeve which is positively guided on the first support member for movement perpendicular to the contact surface and is urged by one or more biasing springs toward that surface so as to surround the entire projecting portion of the sliding head under all loading conditions.

Abstract: A swivelable journal bearing for a shaft of a converter or other heavy-duty equipment comprises a spherically convex inner ring on the shaft and an annular array of rigidly interconnected socket elements each forming at least one seat for an inwardly projecting low-friction insert having a spherically concave face in contact with the ring surface. The socket elements may be short tubes welded to one another or embedded in a shell of concrete; they could also be perforated strips welded together and backed by a concrete shell.

Abstract: A journal bearing with two rows of symmetrically inclined rollers on opposite sides of a midplane includes a split cage whose two halves, meeting at that midplane, form crenelations engaging the rollers. The cage is guided along the inner surface of the outer bearing race which is provided with several peripherally spaced radial bores for the admission of lubricant, these bores opening onto a slightly wider inner peripheral groove formed by confronting annular recesses on the adjoining faces of the two cage halves. Burrs surrounding the inner ends of the bores register with the groove and do not interfere with the rotation of the cage.

Abstract: A friction bearing having spaced-apart inner and outer bearing rings with a plurality of separate sliding members interposed therebetween, the individual sliding members being restrained by respective generally annular members positioned adjacent and on substantially encompassing the sliding members, and fixedly attached to one of the bearing rings.

Abstract: A backup roll assembly for use in a multiple roll mill, e.g. a Sendzimir roll mill, having a plurality of loose boundary rings connected in the manner of a bayonet lock with the outer bearing races.

Abstract: A rotatable member such as a spindle or rotor of a textile machine having longitudinally spaced anti-friction bearings is supported in a housing by elastic members such as rubber O-rings having a cross-section which provides for progressive dampening. The elastic member supporting the bearing which is subjected to the greatest load has a dampening effect of at least twice that of the other one. The increased dampening of the one elastic member over the other may be obtained by greater mass or softer material.

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: A friction disc for an apparatus for the false twisting of threads such as, for example, for crimping synthetic threads, has a thread engaging surface with a high co-efficient of friction and a convexly curved asymmetrical profile which is divided into three portions, each portion forming an arc of a circle having a different radius of curvature, the portion at the thread entry face extending over an arcuate length of about 90.degree. up to the apex of the profile and having a radius of curvature equal to between 0.4S and 0.5S, while the intermediate portion of the profile has a radius of curvature substantially equal to S and the portion of the profile at the thread exit face has a radius of curvature equal to between 0.075S and 0.1S, S being the thickness of the disc.

Abstract: Two annular members, such as a sleeve and an abutment ring, are held together by a snap ring of generally V-shaped (or Y-shaped) cross-sectional profile with a pair of lips with a mirror-symmetrical confronting annular grooves of the members, the arms of the V (or Y) resting against tapering rims of the grooves. The rims and the arms terminate in beveled edges serving, upon the fitting of one lip of the connecting ring into the groove of one member, to cam the other lip radially inwardly for letting it snap into the groove of the other member as the two members are axially pressed together.

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: The combination of an axially loaded rolling bearing with an hydrostatic thrust bearing in a tandem arrangement. The hydrostatic thrust bearing bears against a housing by means of a piston action, and externally produced hydrostatic fluid is conducted from a piston chamber over a controlled flow-off channel.

Abstract: The tapered-roller bearing has an inner race formed with a groove having a frustoconical base on which is provided an array of rollers that also engage a frustoconical surface on an outer race. A cage comprising a ring lies on one of the ledges defining grooves in the inner race and has a plurality of spacer elements engaged between the rollers and formed with ledges overreaching the groove-forming ridge of the inner race and preventing axial displacement in one direction by engagement of the bases of the pockets formed between the spacer elements with the wide ends of the tapered rollers. The spacer elements are formed at their ends distant from the ring body with enlarged heads fitted to the tapered rollers and holding them in place on the inner race.

Abstract: A roller bearing has a pair of metallic race members each formed with a machined race surface. Each of the members is formed with a relatively thin rib and the two members are joined together at the ends of the ribs by means of a weld. Thus stresses resulting from the welding operation are not transmitted to the machined race surfaces of the members.

Abstract: A journal bearing comprises one or two sets of rotary bodies, i.e. rollers and/or balls, guided in a cage structure of resilient resinous material with two axially spaced annular flanges snap-fitted into respective grooves of triangular cross-section which are formed in an outer and/or an inner race. The cage structure may comprise a single annular cage with apertures receiving the rotary bodies, a pair of such cages, or two axially spaced crenelated rings. Upon engagement of the two flanges in their grooves, the cage structure, race or races and rotary bodies form a unitary assembly.

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.