Abstract: A device for measuring the lubrication of surfaces which roll or slide relative to one another and are lubricated by a lubricant. The device includes an oscillator generating an AC voltage signal whereby the capacitance between the lubricated surface is measured by first grounding the capacitance and then connecting it by way of a condenser to the output of an oscillator. This output is connected further to a first input of a modulating circuit while the voltage occurring across the capacitance is delivered to a second input of the demodulating circuit. The output of the demodulating circuit is connected to a processing unit which derives a signal corresponding to the thickness of the lubricant film as well as the percentage contact time during a certain interval of measurement from the output signal of the demodulating circuit.

Abstract: The invention concerns a method and an apparatus for replacing the electrodes of an electric arc furnace.Replacement of the electrodes in an electric arc furnace with an electrode roof (9) removable from the furnace shell takes place by moving the electrodes downwards and upwards through the electrode roof when removed from the furnace shell, in connection with removing and inserting the electrodes from and into their holders (13), respectively. An apparatus with a number of vertical tubes which can be placed below the removed electrode roof is arranged beside the furnace shell. Used electrodes can be lowered into some of the tubes and jointed replacement electrodes can be pushed up through the electrode roof from other tubes. The tubes are placed on a revolving disc (2) for alternating placing below the electrode positions in the roof. By means of the invention replacement of the electrodes can take place without any personnel having to stay above the electrode roof.

Abstract: The invention refers to a fastening sleeve for fastening machine members such as bearings or gear wheels to a shaft. The fastening sleeve is characterized by a body of pressed sheet metal, which is embedded or encapsulated in a housing made of plastic material. One surface of the fastening sleeve is tapering and one axial end of the body is free from moulding compound projecting outwardly beyond one axial end of the plastic housing.

Abstract: A rolling bearing comprising an outer race and an inner race having interposed therebetween two or more rows of rolling bodies, is described. The most important characteristic of such bearing consists in that the inner race is arranged to support a cantilever shaft, and to this end the said race is formed substantially by two facing disks having interposed therebetween a spacer disk.

Abstract: The invention refers to a device for supporting a first member which is rotatable about a mainly vertical axis on a second member. The invention is primarily intended to be used for supporting very large members, which carry very heavy loads. The device incorporates two race tracks and a plurality of rollers cooperating therewith. In order to avoid sliding movements in the contact between roller and race track at varying loads and for achieving an even load distribution on all rollers, the rollers at least of one of the rows of rollers are resiliently suspended in support members, which are adjusted thus that the rollers will engage their associated race track under preload. The rollers and/or the race tracks may be cambered or the support members may be displaceable in the longitudinal direction of the rollers and contact the adjacent elements via arc-formed supporting surfaces for achieving a pure rolling movement in the contact between roller and race track due to race track movements.

Abstract: A clutch release device has a pressure plate mounted on a sliding sleeve, and a stationary ring of a bearing abut one side of the pressure plate. A clutch lever abuts the other side of the pressure plate, and is held from axial removal by a ring having a flexible outer rim. The holding ring is held to the pressure plate by a flange on the sliding sleeve. The clutch lever has a central aperture fitted over a central conical portion of the pressure plate, the aperture having a pair of inwardly directed projections. The outer diameter of the holding ring is greater than the distance between the facing ends of the projections.

Abstract: A method of manufacturing stainless steel comprising the steps of injecting a starting material containing chromium oxide and iron oxide into the lower portion of a reactor, said reactor containing a solid reducing agent, passing said starting material into a reduction zone within said lower portion, said reduction zone being maintained by the use of a plasma generator adjacent thereto, substantially instantaneously reducing and melting said starting material in said reduction zone, and removing the melted and reduced chromiferous product from the bottom of the reactor. The chromiferous product may then be further refined in an AOD convertor or the like.

Abstract: A linear motion rolling bearing including an outer sleeve, a cage within the sleeve for guiding rolling elements, a plurality of endless channels including axial races and return passages filled with rolling elements, and end rings covering the outer peripheral surfaces of the cage which extend axially beyond the outer sleeve, has provision for lubricating these channels while the bearing is in operation by radial excavations defined between adjacent surfaces of the outer sleeve and each end ring, the excavations communicating with an annular groove in the bore of the housing and portions of an annular groove in the outer periphery of the cage extending circumferentially between races of adjacent endless channels.

Abstract: A conveyor roller comprises a roller tube fitted with end cap assemblies incorporating bearings for rotatably mounting the roller tube on a fixed shaft. Each end cap assembly comprises a rigid housing having a cylindrical collar adapted to be a push fit in an end of the roller tube, the outer end of the collar being spaced radially from the housing. The end cap assembly is secured in position by swaging the end of the tube so as to force the outer end of the collar radially inwards against the rigid housing. The collar may be a close fit on the housing, or the housing may be moulded in plastics material and one end of the collar embedded in the plastics during the moulding of the housing. The outer end of the collar has a flange which abuts the end of the roller tube. The outer surface of the housing is curved radially inwards in the direction of the free end of the collar to limit the deflection of the collar.

Abstract: Novel molding compositions are described which are capable of being molded to form structural shapes, such as roller bearing cages, for example, and which comprise from about 40 to about 60% thermoplastic resin, preferably a polyamide, as a matrix, and uniformly dispersed therein, from about 5 to 15% and preferably about 5 to 10% carbon fiber, and about 15 to 25%, preferably about 15 to 20% glass fiber; the molded and set compositions having improved heat resistance, coefficient of heat expansion, bending strength, tensile strength, wear factor, coefficient of friction, heat conductivity, ease of processability and elastic deformability, as compared to similar compositions of the prior art.

Abstract: A process for the production of objects consisting of at least two parts, such as the inner and outer rings of a bearing movable relative to one another. One part is substantially enclosed within the other part and at least one of the parts comprises at least two separate elements. These elements are placed against one another and held in the correct position in relation to the other part. Thereafter, a high energy beam welding means such as a laser or electron beam is set up over the juncture line between the two elements and operated while at least the two elements are moved bodily in order to move the juncture line past the energy beam and weld the pieces together. The process also includes the use of one or more loose members such as rolling elements which are introduced at the time the two elements of one part are assembled in the correct position in relation to the other part and thereafter the two elements of the one part are welded together.

Abstract: A bearing cage having two rings connected by webs for angular contact two-row ball bearings where the bearing cage ring has cage pockets of a partial spherical shape. The radial plane of the bearing passes through the centers of the partial spheres and is placed off-center with respect to the bearing cage ring faces, the distance between the radial plane and the face less distant from the radial plane being preferably equal to the radius of the ball.

Abstract: A linear motion rolling bearing including an outer sleeve and a cage with loaded and return races defined therebetween and a plurality of roller elements in these races, has opposite end rings molded onto the outer sleeve and formed as a unitary structure with the outer sleeve including strips extending between and connected to the rings and extending axially along the bore of the outer sleeve, to maintain the end rings aligned and non-rotatable relative to the outer sleeve.

Abstract: In a clutch release bearing, wherein a pressure plate is affixed to a sliding sleeve, the pressure plate has a cylindrical portion affixed to the sleeve, a radial flange adapted to abut the bearing of the device, and an intermediate conical section. The conical section has four recesses distributed thereabout, two of which are adapted to engage projections of a clutch lever. A holding ring is held on the cylindrical portion of the pressure plate, and has projections entering the other two recesses of the pressure plate. Recesses in the holding ring aligned with the first mentioned recesses have tongues adapted to resiliently hold the projections of the clutch lever in the respective recesses.

Abstract: A device for supplying an oil-air mixture to a bearing location from an oil reservoir which is arranged on a shaft. The oil is held by an absorbent and retentive material, the oil reservoir being in a bore of a revolving machine part and including a closed annular container filled with an absorbent and retentive material, fixed next to the bearing to be lubricated on a shaft and provided with substantially radial passages opening at its periphery into a space communicating with one side of the bearing, and at its bore into grooves in communication with the other side of the bearing.

Abstract: An axial roller bearing assembly adapted for rolling mills comprising at least one pair of flat bearing discs having confronting raceway surfaces, means defining an annular pocket in one of the edges of the bearing disc members having a radial surface, a plurality of rollers in the space between the raceway surfaces, a cage for the rollers comprising a base plate confronting one axial end face of the rollers, a plurality of spaced projections defining roller pockets and a locking ring connected to the outer terminal ends of said projections having a ring shaped extension which projects axially on the side facing one of said bearing disc members beyond the base plate and rests with a front surface on said radial surface.

Abstract: A method for applying a dense, hard, adhesive and wear-resistant layer of cermets or cermic material on a metal object. A mixture of the hard cermet or ceramic material with a bonding metal is sprayed onto the metal object. A gas-tight metal foil is applied over the sprayed on coating and the metal foil and sprayed on coating are isostatically compressed onto the metal object. The metal foil is removed leaving a dense, hard, wear-resistant layer of cermets or ceramic material and bonding metal.

Abstract: A conveyor roller comprises a roller tube fitted with end cap assemblies incorporating bearings for rotatably mounting the roller tube on a fixed shaft. Each end cap assembly comprises a housing molded in resilient plastics material, one portion of the housing forming a substantially rigid annular frame which supports the bearing, and another portion of the housing forming a spring support which surrounds the frame and is of a size to be a sliding fit within an end of the roller tube, the outer end of the support being spaced radially from the housing. An end cover has an annular flange which is a close fit in the bearing. The end cap assembly is secured in position by swaging the end of the tube so as to force the outer end of the spring support radially inwards against the rigid housing. The external surface of the housing is curved, so that the spring support and the end portion of the tube are deflected to the curvature of the external surface of the housing.

Abstract: In a method for advance indication of the possibility of damage occurring to wheel bearings of vehicles, particularly railroad vehicles, the temperatures of the wheel bearing sets of a plurality of wheels are monitored by temperature detectors fixedly mounted on the vehicle. A determined value is derived from the measured values of temperature, and this determined value is compared with the temperature of a further temperature detector, in order to produce a warning signal. The warning system is incorporated in the vehicle itself, and provides a warning to the vehicle personnel.

Abstract: A bearing in which a cylindrical pin extends axially into a bearing shell, and is separated therefrom by rolling elements. A first annular seal includes an annular support body having a U-shaped cross-section and fitted into a recess in the open end of the bore of the shell, and a flexible first seal affixed to the support body and slidingly engaging the cylindrical surface. A second annular seat has a lip engaging an inclined surface at the open end of the shell, and extends to slidingly engage the cylindrical surface. An annular collar of the second seal extends into the open end of the support body, to engage an annular surface therein. The collar is radially slit.