Abstract: A recirculating ball bearing for longitudinally moveable mounting of shafts comprising an outer race sleeve and a concentrically disposed guide sleeve with a plurality of ball races distributed over its circumference, each of the said ball races consisting of two straight race sections extending essentially parallel to the bearing axis and two semi-circular race sections connecting the two straight race sections and a plurality of balls guided in the races under load in only one straight race section and under no load in the remainder of the race section, the improvement comprising providing at least one elastically yielding area in the said remainder of the race section.

Abstract: An overrunning clutch capable of being shifted to free wheeling in both directions and capable of being shifted to a camming position in one direction or free wheeling in opposite direction comprising an outer race provided with camming surfaces and an inner race, a plurality of cam rollers accommodated in a cage rolling on said races, a circular spring with one end secured to the outer race and the other end engaging the roller cage designed with a shift means at the latter end whereby the roller cage can be shifted from a camming position to a free wheeling position in both directions.

Abstract: Play-free roller or slide bearings for low loads and low rpms comprising two structural elements carrying bearing surfaces that either cooperate in direct sliding relationship or have interposed between the bearing surfaces roller bearings, one structural element carrying one of the bearing surfaces is inclined to the other structural element so that the axes of both bearing surfaces are at an angle to each other.

Abstract: A novel apparatus for assembling universal joints formed by the connection of two shafts forked at their ends with a universal joint spider and having antifriction bearings arranged in opposite bores in the shaft forks for accommodating the spider trunnions by abutting against the end faces thereof in which the fork arms are supported at their free ends by holding clips or claws for absorbing the reaction force resulting from the pressing in or fixing force and/or for expansion by a predetermined amount relative to each other.

Abstract: A sealed bushing for a universal joint comprising a bushing with one closed end and an open end for accommodating a universal joint trunnion, rolling elements mounted in the bushing and an elastic sealing ring mounted in the open end of the bushing adapted to closely surround the trunnion and to cooperate with a shoulder of the trunnion to form a seal for the bearing, an axially through going air vent slot being provided between the sealing ring and the trunnion, the outermost end of the slot being sealed from external influences by an elastic sealing lip which preferably interacts with the trunnion shoulder.

Abstract: A method for the production of an axial roller bearing cage comprising applying pressure transverse to its longitudinal direction along the entire longitudinal extent of one end flange of a flat cage strip of plastically deformable material with two spaced end flanges connected by a plurality of crossbars to form pockets for receiving rollers and an apparatus for effecting the said method.

Abstract: An apparatus for the production of plastic cages for radial roller bearings wherein the two end rings of the cage are joined by a plurality of crossbars distributed over their circumference comprising an injection-molding die with a cylindrical core corresponding to the inner diameter of the cage and an outer die element having radially moveable slides, the said injection-molding die being provided with recesses for the simultaneous production of at least two cages.

Abstract: A thin-walled race for a radical ball bearing and a thin-walled race sheave for an axial ball bearing as well as ball bearings containing said races or thrust washers and a method for producing said races and thrust washers and apparatus for the production of said races and thrust washers and assembly of said bearings.

Abstract: A novel method for producing an outer shell for an unitary overrunning roller clutch and roller bearing having a central section provided with camming or ramp surfaces about its circumference and on either side thereof a smooth cylindrical end section as a race for cylindrical rollers with the diameter of the inner enveloping circle of the central section being less in the area of the camming surfaces than the diameter of the end sections comprising forming a shell of sheet metal, inserting into the shell a molding punch whose outer contour corresponds to the desired inner contour of the outer shell, stretching the shell to its final outer diameter with a die moving relative to the punch whereby the shell tightly grips the molding punch and pulling the molding punch out of the shell which will elastically widen.

Abstract: Novel cylindrical rollers for antifriction bearings made of steel with a carbon content of 0.7 to 1.2% by weight, a sorbitic structure and a hardness increased by cold annealing to at least 50 HRC and a novel process for the preparation of said rollers.

Abstract: A radial bearing for two parallel shafts whose direction of radial load is inclined 60.degree. to 75.degree. to the outside toward a line intersecting the two shaft axes comprising a pair of races with a spherical outer contour adjustably mounted in a common bearing housing, the said races being flattened at their facing points with a gap between the races whereby the axes of the races are so close together that their distance is less than the diameter of a race, the recess of the housing receiving the races having an inside width of at least the axial length of the races, one of said races being provided at the side opposite the flattened portion with two plane or slightly curved surfaces inclined to each other in the manner of a roof and running from the end faces of the race and protruding into the area of its crowned surface and the said housing being a unitary element provided in the area of one recess at one end face with an inlet groove corresponding to the cross-sectional profile of said race.

Abstract: A novel method for the production of a thin shell outer member for an overrunning roller clutch with cylindrical rollers at each end and a central portion profiled to form camming surfaces for the grip rollers and the two ends having smooth cylindrical recesses for the cylindrical rollers.

Abstract: A novel shaft coupling particularly useful for bottom rollers in spinning machines wherein a shaft is provided at one end with an extension with a reduced diameter for engaging a longitudinal bore in the end of a second shaft, the connection of the two shafts in the area of the longitudinal bore being effected by a screw thread, a roller bearing arranged with its inner race on the shaft extension between the two shafts with the end surfaces of the two shafts bearing firmly on the end surfaces of the inner race.

Abstract: Novel seal for bearings for example made of an injection moldable material such as plastic or rubber with the sealing lip support integral with the sealing lip and a process for the preparation of the said seal.

Abstract: A novel thin-walled bearing plate for the pivotal support of a tension roller secured thereon comprising a sheet metal bearing plate provided with a bore hole to accommodate a fastening bolt and an oblong slot to accommodate a locking bolt and also provided with an integral hollow-cylindrical protruberance on which the tension roller is to be mounted.

Abstract: Novel recirculating roller bearings for the longitudinally moveable mounting of an element on a planar bearing surface comprising a bearing body with at least one straight race section, a return section parallel to the said race section, two preferably semicylindrical end deflecting sections connecting the ends of the parallel return section and race section to form a closed circulating track and a plurality of rollers in said circulating track, the improvement comprising retaining elements for successive pairs of rollers engaging circumferential grooves in the race edges.