Abstract: A method for the production of a guide rail for linear guiding and having a hardened rolling body race groove on opposite sides of the guide rail. In order to minimize production costs and avoid cutting of the race grooves, the race grooves are initially spaced at a distance that is greater or smaller than their finally desired value, by an incremental distance. Grooves are provided centrally in the guide rail between the opposed race grooves, and the race rail is then hardened except in the region of the central grooves. Compression rollers in the race grooves or central grooves are then forced into the guide rail to decrease or increase respectively the distance between the race grooves until the desired distance therebetween is obtained. The method can also be employed when only a single race groove is provided on the rail.

Abstract: A work tool for the separation of tubes, wherein two deforming rollers rigidly mounted on the tool are moveably arranged tangential to the tube for separating the tube up to a remaining section by deformation without cutting. Thereafter the full separation is effected by a cutting roller movable radially toward the tube and advanced thereto by the work tool.

Abstract: A conveyor roller has end caps forming housings for ball bearing units rotatably mounting the conveyor roller on a spindle, each housing having an end wall forming an abutment for locating the bearing in the housing, and the spindle having circlips abutting the bearing units. Each bearing unit has inboard and outboard seals mounted on the outer bearing ring, and the inboard seal is formed with projections which are compressed axially with permanent deformation between the inboard seal and the end wall of the housing, so as to function as a spacer. The projections are spaced symmetrically around the axis of the bearing unit, and each projection is symmetrical about a radial plane through the center of the projection. The projections are formed integral with the seal or consist of separate V-shaped elements mounted in slots in a side face of the seal. The inboard seal is formed with a recess for each projection, the recess having a depth to accommodate the projection when in a fully collapsed condition.

Abstract: Hydraulic tappet essentially comprising a first cup member sliding in a seat; a second member sliding axially in relation to the first; a third annular member located inside the said first cup member and having a sleeve, inside the inner bore of which the said second member slides axially, and a ring projecting radially from the said sleeve and connected in fluidtight manner to the side wall on the said first cup member in such a manner as to form a first chamber for fluid under pressure; and a fourth annular member made of flexible material and located essentially inside the said first cup member and outside the said sleeve on the said third annular member in such a manner as to form a second activating fluid chamber connected hydraulically to the said first chamber over a duct with an on-off member.

Abstract: A seal for a rolling bearing having an outer bearing ring, an inner bearing ring and rolling elements between the outer and inner rings. A seal extends from one of the bearing rings and has axially extending sealing lips engaging a centrifuge plate extending from the other bearing ring. The free end of the centrifuge plate extends to the region of the bearing ring to which it is not affixed, and is angled axially outwardly therefrom.

Abstract: A draw frame for a spinning machine is provided with roving blocking mechanism associated with its inlet rollers actuable on rupture of the remittant thread to arrest movement of the roving and is further provided with a sensor for detecting the continuity of the roving being fed from a source of supply and a roving clamp situated between the sensor and the blocking mechanism. The blocking mechanism and the roving clamp are arranged to be simultaneously operated in response to a signal from the sensor or in response to rupture of the thread.

Abstract: A cage for a radial ball bearing comprises an annular body of resilient material formed with pockets for reception of the balls as a snap fit and prongs for guiding the balls into the pockets when the annular body is fitted in the bearing from a side thereof. A retainer ring is mounted on the guide prongs to maintain the same cord distance between the prongs and thereby restrict deformation of the annular body so as to prevent ejection of the annular body under the ball-to-cage contact forces in the operation of the bearing.

Abstract: The invention relates to a method and means for cooling lump material in which the material in a vertical, gas-tight cooler (1) is subjected in a furst step to a transverse cooling flow (at 9) and in a second step to counter-flow cooling (at 20). Optimal cooling effect is obtained by a distribution of the cooling gas between transverse and counter-flow cooling in such a way that maximum temperature is obtained in the cooling gas leaving through the outlet (13).

Abstract: A pocket cage for a rolling bearing, e.g. a cylindrical roller bearing, made in a mold with single-piece, radially movable sliders, in particular out of plastic material with low deformability, which cage comprises two side rings connected by webs, with at least the circumferential outer surface or the bore being provided with projections which project into the pockets and extend along only part of the web length for retaining the rolling elements in the radial direction. In particular, a retaining projection is provided on a first side of each web and a recess, i.e. free space, is provided on a second side of each web. The angle between the oblique surface of the recess and the second side surface of the web is greater than or equal to the angle between the surface of the retaining projection which faces the rolling element and the first side surface of the web.

Abstract: A ball bearing has an outer ring and an inner ring with respective rolling tracks for a set of balls, the ball bearing being of the so-called "oblique" type in which the rolling tracks, in section, constitute arcs of a curve the normal to which at the mid point of the curve is inclined at a predetermined angle with respect to the axis of the rings. Adjacent the rolling track on the inner ring is a groove the minimum diameter of which is less than that of the rolling track and adjacent the rolling track of the outer ring is a cylindrical surface the diameter of which is less than the maximum diameter of the rolling track. The difference in diameters between the cylindrical surface and the minimum diameter of the groove is such that half this difference is equal to the diameter of a ball.

Abstract: The invention pertains to a process and a device for the assembly of universal joints. In order to reduce the defect of center misalignment of the joint parts with respect to each other which characterized the joints after assembly, the center misalignment resulting from different pressing forces on the bearings and from other manufacturing tolerances are measured according to the invention during assembly, whereupon appropriate corrective forces are generated to eliminate the misalignment of the centers.

Abstract: Wheel bearing with a built-in homokinetic coupling. The wheel bearing comprises a generally annular inner part, an outer race and two rows of rolling elements located between the outside running surfaces formed on the outer race and the inside running surfaces applied to the inner part. The outer race is equipped with a radially extending flange for the attachment of the bearing. The annular inner part is equipped with a radially extending flange to which the hub of a wheel can be attached. The inner part forms at the same time one unit with the outer ring of the homokinetic coupling. The flange of the inner part is extended with a brake element which forms the part to be braked of a braking mechanism so that the inner part of the bearing, the carrier flange for the wheel, the brake element and the outer ring of the homokinetic coupling form one homogeneous unit.

Abstract: Four-row cylindrical roller bearing for the working or back-up rolls of high-speed roll stands, in which, so that the rollers of all rows can roll evenly at high speeds without slippage, and also so that the bearing can be easily disassembled, the inner ring is provided with flanges on both sides of each row of rollers and, in the installed state, at least the two rows of rollers facing the roll body are each guided in a separate cage.

Abstract: A pillow block housing having partition means dividing the interior of the housing into an outer oil reservoir chamber and an inner chamber for a rolling bearing, said chambers being separated by partition means extending in a generally radial direction with respect to the bearing axis, a lubricator ring which rests in the inner chamber on a shaft member or the like and projects through recesses in the housing partitions into the oil reservoir chamber and supplies lubricant from the reservoir to the inner bearing chamber upon rotation of the shaft, said partition means comprising separate divider sections selectively adjustable in various axial positions in the housing bore in a form-locking manner.

Abstract: A tension-adjusting device for a driving belt comprising a tension roller and having an engagement arrangement provided between a support of the tension roller and a machine frame for enabling stepwise swiveling movement about a partially disengaged mounting bolt. The axis of swivel is radially displaced from the rolling axis of the tension roller. The engagement arrangement comprises a projection formed on the support radially displaced from the axis of swivel and a plurality of depressions formed in the machine frame and arranged at regular intervals along an arc defined by the path of travel of the projection during swiveling, whereby the projection is engageable with each depression, thereby defining a corresponding step in a range of adjustment of the tension of the driving belt.

Abstract: The resilient block serves to connect a stem of a shock absorber of a suspension of a vehicle to the body thereof and is provided with a rolling element bearing keyed to the stem and provided with an outer ring having an annular groove on its outer cylindrical surface, engaged by an inner rim of a first frusto-conical support sleeve, a second frusto-conical support sleeve which can be fitted to the body, and an elastomeric sleeve directly vulcanized onto the outer lateral surfaces of the outer ring of the bearing and the associated frusto-conical sleeve and to the inner surface of the second sleeve to form a single indivisible unit.

Abstract: The invention relates to a method of destroying hazardous waste, by means of under-stoichiometric incineration at a temperature of at least 1200.degree. C., the ratio between injected waste material and oxidant being regulated to give a quotient CO.sub.2 /(CO+CO.sub.2) of less than 0.1.

Abstract: In this process for forming an internal screw thread in a tube or link made from a composite carbon fiber based material coated with polymerized resin, the part of the tube or link comprising the screw thread is inserted in the body of the tube or the link and molded on a threaded mandrel. This part of the tube or link where the screw thread is to be formed is polymerized substantially completely and under pressure on the threaded mandrel so as to obtain a preform comprising a hard internally threaded portion extended by non polymerized fibers; an expandable mandrel is introduced into this preform; the preform is inserted inside a tube which is already polymerized or to be cured; and finally polymerization under pressure of the fibers is provided by heating and causing the mandrel to expand so as to bond them to the fibers of the tube.

Abstract: A method and a means for continuously producing a preformed metal product through direct reduction of a material containing ferric oxide in a shaft furnace and feeding the product manufactured in the shaft furnace via a gas lock into a hot preforming machine, the hot product obtained from the shaft furnace being kept at the temperature required for the subsequent hot preforming process, preferably at least about 550.degree. C., by means of hot, non-combustible gas consisting primarily of N.sub.2 and/or CO.sub.2 which has been heated by excess heat from the shaft furnace.

Abstract: In combination, a bearing bushing for universal joints of generally cup-like form, a sealing ring for sealing a space between the bearing bushing and a shoulder of a machine part supported in the bushing, a circumferentially extending radially inwardly directed flange at the open axial end of said bearing bushing defining an annular interior recess, said sealing ring having a radially outwardly directed circumferential projection engaging in said annular recess interiorly of said flange, and means defining at least one axial opening in said sealing ring defining a passage connecting the running space of the bearing with an annular space outboard of the flange bounded by said flange and sealing ring.