Abstract: A check valve in an automotive braking system between the master cylinder and a wheel cylinder includes a screw or a piston mounted in the check-valve housing for overriding or opening the valve prior to a charging or filling operation to facilitate an evacuation of air from the system. A flow-regulating assembly in the valve includes an annular sealing disk biased by a restoring spring into a fluid-tight contact with an annular valve seat. Another restoring spring mounted in the housing in opposition to the first spring biases a spherical plug into a fluid-tight contact with an inner rim of the disk, this disk being mounted in a cup-shaped extension of a hollow shaft. In one embodiment the shaft extends from the flow-regulating assembly to the override screw; upon an inward shift the screw engages the free end of the shaft and thereby pivots the same and the sealing disk about a point on the valve seat.

Abstract: A brake or clutch master cylinder has a slightly stepped bore with angularly equispaced grooves extending from the large diameter step into the small diameter step across the seal of the piston in its rest position. The fluid reservoir communicates with a groove of the large diameter step via a radial port.

Abstract: A false-twist device of the type in which a pair of crossing belts engage and twist the yarn between them utilizes magnetic means to press the belts together and apply a uniform force to the yarn.

Abstract: A thread-loading device is used in combination with a false-twist apparatus having at least one frame element having an abutment surface turned away from the yarn-twisting region defined by three sets of axially spaced rotatable twisting disks. The thread-loading device has interengaging formations on the frame adjacent the abutment surface and on the support for releasably securing same together. These formations extend radially of the region. Thus the support can be fitted to the frame by being displaced radially toward the region to interfit the formations. A detent is carried in the support and displaceable between a blocking position engaged with the arm in the outer position thereof for preventing movement of the arm relative to the support and a freeing position permitting such movement.

Abstract: In order to determine the boiling point of a liquid, especially a nonaqueous one such as a brake fluid, a device suspended in a body of that liquid--e.g. in a reservoir supplying fluid to a brake cylinder--forms a narrow chamber which is downwardly open and upwardly closed and which contains means for heating the liquid in that chamber and measuring its temperature; the two functions can be simultaneously performed by a thermistor. When the boiling point is reached and the liquid in the chamber is vaporized, a lessening of the heat conduction to the main body of liquid results in a steep rise in temperature; the boiling point marked by this event can be read on a meter and/or qualitatively indicated by differently colored lights, for example. An excessive temperature rise early in the test will also show an unduly low liquid level in the reservoir.

Abstract: A journal bearing with several rows of rollers, separated by one or more spacing rings, has an inner and an outer race defining between them an annular clearance which is laterally bounded by a first pair of annular disks fixedly secured to the inner race and a second pair of annular disks removably fastened to the outer race by a bayonet coupling. A spring-loaded bolt inserted in a bore on each end face of the outer race, between bayonet lugs thereof, snaps into a depression of the corresponding boundary disk when the latter has been rotated into its engaged position. A partly uncovered end of the bolt allows its repression by a suitable tool to release that disk for the purpose of disassembly.

Abstract: In a bearing assembly supporting the free end of a drive shaft, a carrier for enabling axial motion of the assembly to accommodate thermal expansion of the shaft during extended power-transmission operations has a meandering cross-section with a thin U-shaped central or middle section and a pair of thick-walled Z-shaped peripheral sections. The sections are annular and together define a central wide groove and a pair of flanking narrow grooves. The inner Z-shaped section is attached to the outer race of a bearing whose other race is rigid with the shaft, while the outer Z-shaped section is fastened to a housing. The thin walls of the central carrier section permits a limited axial movability of the bearing assembly, while the annular shapes of the carrier sections, in particular the thick sections, inhibit axial or transverse motion of the shaft.

Abstract: A journal bearing for two relatively rotatable members is formed from two coaxial rings, one of them being axially divided into two mutually symmetrical halves with respective annular track surfaces each bounded only by an external shoulder while the other ring has two annular track surfaces separated by a pair of internal shoulders. Two sets of rotary bodies (balls or rollers) are confined by these shoulders between respective inner and outer track surfaces and are held spaced apart by a common annular cage with annular lips or groups of teeth snap-fitted into a pair of closely juxtaposed annular grooves near the shoulderless internal edges of the two ring halves whereby the entire assembly is held together when detached from the relatively rotatable members.

Abstract: Spherical bodies, such as bearing balls, are tested for machining irregularities or structural defects by subjecting them to supersonic vibrations from two or more ultrasound generators through the intermediary of a coupling liquid in which these bodies are immersed. One ultrasound generator has an axis in line with the body being tested while the other generator or generators have axes including acute angles with the radial directions of that body. The body is subjected to rotation in different planes by injecting the coupling liquid, alternately or simultaneously but at varying relative rates, through two different nozzles into an interspace separating the body from a spherically concave supporting surface.

Abstract: One of two coaxial races of a ball or roller bearing is provided near an edge thereof with an internal annular groove into which a peripheral lip of a plastically deformable sealing ring of generally L-shaped half-section is forced by camming engagement with an axially more inwardly positioned annular member resting against a transverse shoulder of that race. The annular member may be a lip seal in contact with the other race or may be part, together with the deformable ring, of a labyrinth seal including at least one further ring mounted on that other race.

Abstract: A seal assembly engages between at least one body having an outwardly directed cylindrically annular surface centered on an axis and an annular and planar surface perpendicular to and centered on the axis and another body having an inwardly directed cylindrically annular surface centered on the axis. The seal assembly has a rigid C-section support ring fixed to the inwardly directed surface and open axially toward the planar surface, an elastomeric radial ring seal having an outer periphery vulcanized to the support ring and an inner periphery radially inwardly engaging the outwardly directed surface, and an elastomeric axial ring seal received in the support ring and engaging axially against the planar surface. Such a seal assembly is extremely compact so that it can be provided right in a roller bearing without substantially increasing its size. The radial seal can lie within the radial projection of the axial seal to give the arrangement a very short axial length.

Abstract: The disclosure concerns a double-row, radially self-aligning, roller bearing. The bearing has an outer race ring and an inner race ring. Two annular arrays of rollers are carried in respective cages located at the two axial sides of the bearing. Each cage defines a respective pocket for each roller of the roller bearing. The circumferential side walls of a pocket are generally profiled to the sides of the respective roller. The cages are also defined by an axially inward and axially outward ring which joins the pocket walls. The diameters and placements of the rings of the cages are selected so that in an axial projection of the rings, one upon the other, the rings do not intersect. The axially more inward ring has an inner diameter that is not less than the outer diameter of the axially more outward cage ring, and the bearing rollers are inclined appropriately. The cages are comprised of elastic, flexible, plastic material enabling the cages thus shaped still to be installed in the race rings.

Abstract: A false-twist apparatus has a base defining a fixed axis on which is journaled a fixed disk assembly including a shaft and a plurality of disks journaled in the base with the shaft at the fixed axis and the disks spaced therealong. A pair of supports are pivotal on this base and define respective movable axes offset from their pivot axes. Journaled on each of these supports at the respective movable axis is a movable disk assembly including a shaft and a plurality of disks, the shaft lying on the respective movable axis and the disks being spaced therealong. The supports can be pivoted between inner positions with the disks overlapping and each assembly axis equispaced from the other two assembly axes and outer positions with the disk spaced radially. These supports can be secured in the inner positions for false-twisting of a filament passing axially up between the disks.

Abstract: A rapidly rotating shaft for a wire-rope-stranding machine or the like, comprising a plurality of tubular sections interconnected by flanged coupling sleeves, has a journal bearing for each coupling sleeve whose inner race is unitary with that sleeve while its outer race is a ring closely surrounded by a cylindrical housing. The ring and the housing are provided with aligned bores for the introduction of lubricant; an annular cage between the two races, having a multiplicity of peripherally spaced pockets engaged by respective bearing rollers, is provided with apertures between these pockets facilitating the passage of the lubricant to the inner race.

Abstract: A journal bearing for a pump shaft comprises a sleeve whose inner peripheral surface forms two grooved tracks for respective sets of bearing balls adjacent one end thereof and forms a retaining groove near the other end. The two sets of bearing balls, held in respective cages, are also received in a pair of closely spaced peripheral grooves of the shaft confronting the tracks of the sleeve, thereby preventing relative axial shifting of the sleeve and the shaft. A set of bearing rollers are inserted between smooth surface portions of the shaft and the sleeve near the opposite end of the latter and are lodged in pockets of an annular cage having a peripheral rib snap-fitted into the retaining groove.

Abstract: Rollers for a high-speed journal bearing are tested for any unbalance before assembly by being rotated at high velocity while lodged in a movably supported air bearing. Rollers with a dynamic unbalance above a predetermined limit are rejected.

Abstract: A pump shaft is journaled in a housing through the intermediary of two metal rings forming the outer races of a ball bearing and a roller bearing whose rotary bodies are in direct contact with the shaft. The two bearing rings, which are relatively axially shiftable during assembly, are interconnected by a sleeve preferably of synthetic resin which they engage with a snap fit. The outer diameter of the sleeve is less than that of either ring; the two outer ring diameters may also differ in size from each other.