Abstract: A vane air pump is used to selectively supply air under pressure to a tank or evacuate air from the tank. A control valve mounted on the pump has a housing with an air inlet area and an air outlet area. A spool rotatable in the housing to a first position connects the pump and valve passages to supply air under pressure to the tank and a second position connects the pump and valve passages to evacuate air from the tank. A lubricating apparatus having a reservoir for storing oil is connected to the air inlet area of the control valve to draw oil into the control valve and the pump to lubricate the spool of the control valve and bearings and vanes of the pump. An adjustable metering valve controls the flow of oil into the control valve and pump.

Abstract: Open-end spinning machine apparatus is provided which includes a spinning shaft with a spinning rotor at one end and a driving whorl at the other. A bearing assembly is provided including two sets of roller bearings spaced axially from one another and in bearing engagement with the spinning shaft. In order to accommodate replenishment of lubricant to the roller bearings during operation, an oil-feed device is provided which is responsive to the speed of the spinning shaft to supply oil thereto. In preferred embodiments, the oil-feed device includes an oil reservoir adjacent a sealing element which faces the spinning shaft, which sealing element is responsive to reduced pressure caused by rotation of the spinning shaft to supply oil thereto, with no oil being supplied with a stopped spinning shaft.