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.

Abstract: A device for attaching to the underside surface of a dining table which is connectable to a receptacle mounted in the floor beneath the table. The device has a generally T-shaped base with an electric receptacle box attached thereto which contains a plurality of plug receptacles, a circuit breaker, a power ON-OFF switch and a condition-indicating light. A plurality of hook formations are located adjacent the receptacle box for releasably holding the ends of one or more electrical cords from appliances such as coffee pots, bun warmers, hot plates, etc., resting on the table surface. A pair of reel-forming hooks are formed on the elongated leg portion of the T-shaped base to provide a storage reel for an electrical supply cord connected to the receptacle box. The supply cord is adapted to be connected to the floor-mounted receptacle for energizing the receptacles mounted on the base.

Abstract: To enable a single row tapered roller bearing to receive adequate lubrication at critical surface areas while operating at moderate to high speeds, the thrust rib on the cone of the bearing is fitted with a lubricating ring that in combination with the rib forms an inwardly opening trough and a plurality of channels that lead from the trough and over the thrust rib so that the ends of the channels open toward the large diameter ends of the tapered rollers. Alternatively, the lubricating ring may be the thrust rib, with the channels extending beneath it and opening toward the large diameter ends of the rollers. A lubricating oil is introduced into the trough, and the centrifugal forces that are exerted on this oil through rotation of the cone causes the oil to flow through the channels and discharge against the large end faces of the rollers.