Abstract: A blower is used for circulating larger gas volumes, in particular for high power laser systems which operate according to the gas-transportation principle. The blower comprises a radial feeder being arranged in a connection between two gas ducts. The radial feeder is driven by a vertical shaft, rotating at high rotary speed. In order to permit extremely large gas volumes, typically in the range of several ten thousand cubic meters per hour, to be circulated, the shaft is seated in a pressure-tight housing. Two axially acting seals are arranged on the shaft at a certain distance from the radial feeder. The seals define a pump chamber connected with one of the gas ducts, a lock chamber and a drive chamber. The seal between the lock chamber and the drive chamber comprise an axial upper sliding ring resting elastically on a lower thrust ring.

Abstract: A flow machine, especially a gas turbine equipped with means for separating an oil/air mixture and for returning centrifuged oil droplets to a circulation having oil consuming devices such as bearing places and with a vent line leading from the center toward the outside; the separating means includes a porous air-permeable element built into the hollow main shaft between two oil-impermeable walls whereby radially outer feed openings for the oil/air mixture are arranged in the upstream wall which correspond to openings in the main shaft while an air discharge opening is arranged in the downstream wall in its center which is in communication with the vent line.

Abstract: An integrated emergency lubrication system is provided to lubricate the bearings of a gas turbine engine in the event that the normal lubrication system for the engine fails for any reason. The emergency system includes an accumulator for storing oil, derived from the normal lubrication system, that is released in a controlled manner to lubricate the engine's bearings for several minutes after the normal lubrication system fails. During that time, the operator of the engine has an opportunity to cope with the situation. Energy for operating the emergency lubrication system is derived from compressed air bled form the compressor section of the engine, the compressed air also being combined with oil from the accumulator to form an air/oil mist that is sprayed over the bearings to be lubricated.

Abstract: A sealed, oil-filled journal is provided which includes two axially-spaced ball race areas in the preferred embodiment, and which incorporates an axially expanding pressure ring disposed between an internal annular rib and the angular contact ballbearing ring in one of the ball race chambers. The pressure ring maintains generally constant force against all of the bearings in the spaced ball race chambers so that the combination of the immersion in oil of all the bearings in the journal, and the maintenance of the constant pressure on the bearing elements to prevent their getting loose, minimizes brinelling and produces a jounral that has a very long life span.

Abstract: An outer cup made from flat sheet metal encloses an inner cup also made from flat sheet metal. The inner cup has an open end adapted to receive the end of a rotatable member, such as a shaft. The other end of the inner cup has a closed end axially spaced from the closed end of the outer cup to provide a lubricant reservoir in communication with the rollers in the annular space between the cups.

Abstract: A Hookes universal joint wherein each journal of the cross member of the joint has a lubricant chamber adjacent its outermost end, and the lubricant channel for the journal leads into a passage extending outwardly towards the free end of the journal and then inwardly to open into the chamber at its innermost end. The passage is defined by a one piece component which includes a spigot extending into lubricant channel, an outwardly extending tube, and inwardly extending tubes which terminate at the innermost end of chamber. These parts are formed in a one piece component integral with a thrust washer. The arrangement prevents lubricant drainage from the chamber when the joint is stationary.

Abstract: The disclosure concerns an anti-friction bearing between a rotating shaft and an external bushing. The bearing includes two axially spaced apart rows of bearing balls. A feed bushing is disposed in the space between the shaft and the external bushing and between the two rows of bearings. The feed bushing is open at the axial ends for dispensing lubricant to the rows of bearings at the axial ends of the feed bushing. The feed bushing holds lubricant, such as grease, in itself for being dispensed at the axial ends of the feed bushing. A porous elastic material may be disposed in the feed bushing for being impregnated with the lubricant. The feed bushing, and also the porous material if used, are elastic and resilient to permit deflection of the shaft with respect to the external bushing. Various shape and configuration feed bushings are disclosed. A lubricant recharging hole passes through the external bushing and communicates to the feed bushing.

Abstract: A retrofit bearing oil supply filter-control apparatus for a rotating machine is disclosed. The filter-control apparatus may be installed in existing or new bearing oil systems. The apparatus includes a hollow flow-control block having a central cavity therein. The central cavity has an inlet in fluid communication with an oil supply and an outlet in fluid communication with the bearing.The apparatus also includes a removable oil flush deflector inserted in the central cavity. The oil flush deflector is inserted during an oil flush to prevent oil containing damaging particles from reaching the bearing. The apparatus also includes a removable oil filter that is inserted in the central cavity during normal operation. The oil filter catches damaging particles entrained in the oil and prevents them from reaching the bearing.

Abstract: A bottom plate for emplacement in a bushing having an opening defined by an internal peripheral side wall and a bottom of the bushing. A pin, like the pin of a universal joint cross piece, is received in the opening of the bushing with rollers around the periphery of the pin for permitting rotation of the pin in the opening of the bushing. The bottom plate is disposed between the bottom end of the pin and the bottom of the bushing. Radially extending lubricant distribution grooves are defined in the bottom plate. First ones of the grooves extend over the region beneath the bottom end of the pin along the side of the bottom plate opening toward the pin. Second ones of the grooves extend over the region of the bottom plate beneath the rollers along the side of the plate and opening toward the bottom of the bushing. A step-like transition is defined between the first and the second ones of the grooves in the bottom plate.

Abstract: A rotor bearing assembly is provided wherein a shaft is journalled within a housing by a pair of spaced bearings packed in a quantity of grease. An oil guide surrounds the shaft and a storage space between the guide and the housing is formed for retaining a supply of grease capable of releasing oil into the guide to replenish the packing. A fresh supply of grease is periodically introduced into the storage space through an inlet extending through the housing. An outlet extends through the housing for discharging a corresponding quantity of grease from the storage space into a collection chamber exterior of the housing which receives and holds the discharged grease.

Abstract: A bearing assembly for supporting the spindle of a machine tool includes a single row tapered roller bearing and a closure at each end of the bearing for isolating the interior of the bearing from the surrounding atmosphere. A liquid refrigerant and lubricating oil are mixed in the closure at the small ends of the rollers, and are directed into the space between the tapered raceways. This refrigerant, upon encountering the tapered rollers, the raceways along which the rollers roll, and the thrust rib against which the large ends of the rollers bear, vaporizes and extracts heat from those bearing components, thereby enabling the bearing to operate at a generally uniform temperature close to room temperature. The vaporized refrigerant flows through a port in the closure at the large ends of the rollers and then into a heat exchanger where it is condensed, the liquid refrigerant being then directed to the closure at the small ends of the rollers.