Abstract: A system for continuous lubrication of bearings in a drilling apparatus including a roller bit having at least one pivot and a cutting roller rotatably supported on the pivot by bearings. The system comprises pumping means in the form of spiral or oblique grooves on one of the spaced confronting faces of the roller bit and cutting roller and a flow opening or port arranged to effect flow of a flushing liquid through the bearing upon rotations of the cutting roller. The grooves may be selectively oriented to pump flushing liquid through the annular gap between the roller bit and cutting roller faces radially inwardly or radially outwardly for a given direction of rotation of the cutting roller.

Abstract: An electric motor attached at one axial end to a frame for a dishwashing machine or the like and which at its opposite free end is provided with a cooling blower for generating air jets. The improvement comprises cooling channels for the air arranged around the stator, the cooling channels having outlet openings for the cooling air facing the frame and situated at a predetermined distance from the frame with the exception of one or some of the channels at one side of the motor which in combination with the frame are closed in an axial direction and are provided with outlet openings for the cooling air so that the cooling air is directed inwardly against the shaft at the end of the motor turned towards the frame.

Abstract: A seal for a gap between at least two surfaces comprising a unitary body member made of a foam plastic material including at least one homogeneous peripheral surface portion and at least one internal porous portion. The porous portion is filled with a lubricant and is exposed through at least one section in the homogeneous peripheral surface portion to permit transfer of lubricant therethrough.

Abstract: A rolling bearing construction wherein a guide rim is secured to a ring incorporating the race for the guide rim by the interposition of a bonding film of a hardening, cross-linking resin.

Abstract: A nozzle for dosing, feeding and if necessary mixing liquid and/or solid components, comprising a rotatable vessel of cup-like form. The vessel has a base, a central hub portion and an outer generally cylindrical wall spaced radially outwardly from the hub portion. The cylindrical wall has a pouring opening in its upper portion and a plurality of outlet openings disposed preferably at its lower portion. The vessel is rotatable about a central vertically disposed axis through the hub portion. The vessel is divided into a plurality of chambers by vertically oriented equiangularly spaced partition walls extending between the hub and outer wall.

Abstract: A device for sealing the space between two surfaces comprising an elongated body portion made of a flexible, resilient material such as rubber. The body portion engages in a recess in one of said surfaces. The sealing device further includes at least two rigid plate members seating in a recess in the body portion and having a portion projecting therefrom defining a channel and a sealing member mounted in said channel and projecting therefrom to engage the other of the sealing surfaces to be sealed.

Abstract: A clutch release bearing for use with a friction clutch for automotive vehicles having a ring-shaped spring release member. The clutch release bearing is formed as an anti-friction bearing wherein one of its race members has a portion extending axially away from the rolling bodies. The extending portion projects a distance sufficient to be inserted within the bore of the spring release member and to pass behind the rear wall and engage therewith. The race members of the bearing are made of sheet metal and are folded to provide substantially radial walls adapted to engage the front face of the spring release member or the clutch release actuating member. The projection of the one race member may be cylindrical or it may project as a ring-shaped body having slots forming resilient fingers interengaging with the arms of the spring release member.

Abstract: A double-twist twister mechanism includes a pair of assemblies which rotate about oblique intersecting axes, support a nonrotating spool carrier and have portions extending through each other. The assemblies are connected together for concurrent rotation by an external elastic member which is passable over the spool carrier into engagement with concentrically arranged fasteners on both assemblies.

Abstract: A system for lubricating bearings in a drilling apparatus including a roller bit with at least one pivot and a cutting roller rotatably supported on the pivot by bearings. A cavity or chamber is formed in the roller bit for a non-compressible flushing liquid. The flow channel which communicates with the chamber at one end and the bearing cavity at the other end, provides a flow path for the flushing liquid to the bearing cavity. In one form the flushing liquid discharges to the bearing cavity at a point remote from an annular gap between the outer axial end face of the cutting roller and the roller bit. In another embodiment circumferentially spaced discharge ports are located between the bearings so that a portion of the flushing liquid is discharged to the environment and the remainder flows through the bearings and out the annular gap.

Abstract: A plastic cage for a rolling bearing is formed of a comb part having rivet pins formed unitarily therewith. Recesses are provided in the cage side rings, aligned with the bridges, in order to inhibit deformation of the comb structure. The rivets are formed in the ends of the bridges, and are ultrasonically riveted in corresponding holes in the cage cover.

Abstract: A packing seal for closing the space between a rotating shaft and a stationary machine part is described. A ring is located in an annular slot formed in one of the shaft or machine parts. The ring is tensioned radially on the rotating or on the non-rotating part and axially spaced from the frontal faces of the slot so that a fluid media can be located therebetween. At least one face of the ring has a plurality of arcuate grooves by which the pressure of the fluid medium between the ring and the opposing frontal face of the slot is generated on rotation of said shaft.

Abstract: A ring for locking and spacing two components situated in a cylindrical bore, characterized in that said ring has a closed uninterrupted angular shape and comprises a weakened part which allows the adjacent end parts to be pressed to each other without disengaging said end parts from said weakened part.

Abstract: A snap cage for a bearing wherein the diameter of the peripheral surface of the cage, viewed in axial direction is diminished, or the diameter of the bore surface of the cage is augmented, towards the web ends, the ends of the webs being formed such that the faces of the web ends lie on one side of the pitch circle.

Abstract: A metallic heat exchanger for heat transfer between a first medium flowing in tubes and a second medium flowing about the tubes and within an outer housing, the device including internal walls which divide the housing into three chambers with outlets and inlets to define a single continuous passage, the tubes extending through the chambers such that counter-flow heat exchange occurs in the first chamber, parallel flow heat exchange in the second chamber, and counter-flow heat exchange in the third chamber.

Abstract: Lubricating compositions and shaped articles composed thereof for use in bearings and the like are described which consist essentially of about 50 to about 90% by weight of an oil of lubricating viscosity and about 50 to about 10% by weight of polymethylpentene having an average molecular weight in the range from about 3 to about 5 million; the oil being a mineral oil, a diester oil or preferably a synthetic hydrocarbon oil, and having a viscosity in the range from about 15 to about 300 millimeters.sup.2 /second (mm.sup.2 /s) at 38.degree. C. (100.degree. F.

Abstract: A clutch release bearing having thin-walled inner and outer races. To the inner surface of the inner race is secured a sleeve of resilient material. This sleeve may have a plurality of ribs in contact with the tube guide of the gear box. A single blind annular recess or plurality of substantially axial full length or blind recesses is disposed in the thickness of each sleeve, substantially in the area of each rib. Self-alignment of the release bearing is obtained by deformation of the walls between the ribs and the recesses or by radial compression of the ribs or both. The ribs may be substantially radially inclined and preferably there are at least six such ribs. Alternatively, the sleeve has an inner cylindrical portion, either unitary or axially split, in contact with the tube guide.

Abstract: A commutator motor constructed and arranged to provide cooling and removal of carbon dust produced during operation. The motor comprises a housing, a stator consisting of a plurality of laminations embedded in the housing and defining at least a pair of circumferentially spaced yoke portions and pole portions intermediate the yoke portions. The rotor is rotatably supported in the stator cavity. The yoke portions are of a predetermined configuration defining first axial channels having inlet and outlet openings to facilitate flow of cooling medium through the channels in one direction. A commutator chamber is provided at one axial end of the rotor and separated from the rotor cavity by a circumferentially extending wall.

Abstract: A mechanism for transferring a rotary motion into an axial motion. The assembly includes a shaft having a smooth, cylindrical envelope surface, a retainer enclosing the shaft and rotatable relative the shaft. A plurality of bearing housings with bearing seats inclined towards the shaft are arranged in the retainer. Bearings having outer and inner race rings are arranged in the bearing seats. The bore diameter of the inner race rings, which are arranged to enclose the shaft, are larger than the diameter of the shaft. The bearing seats are designed completely to enclose the outer race rings of the bearings. The retainer has a recess having opposing sidewalls defining guide surfaces. The bearing housings are slidable in and guided by the sidewalls of the recess for displacement substantially perpendicularly to the shaft. The bearing housings are subjected to a force in the direction of displacement so as to urge the inner race rings of the bearings against the envelope surface of the shaft.

Abstract: A holding disk, having, in the center, a sleeve-shaped section provided with a thread and, at the outer periphery, an annular flange running in radial direction and displaced axially in relation to the sleeve-shaped section. The connecting section between the sleeve-shaped section and the annular flange joining the end of the sleeve-shaped section is turned away from the annular flange.

Abstract: A ball bearing with a cylindrical ball cage intermediate a shaft and outer shell, and alternately spaced longitudinal load portions and ball-return paths in the bore of the shell, has additional longitudinal recesses in the bore for receiving with play a mating longitudinal rib on the cage, which permits restricted lateral and circumferential movement of the balls relative to the shell during longitudinal movement of these balls.