Abstract: The invention relates to a system for the continuous lubrication of a rolling bearing. The rolling bearing is arranged in a bearing bore provided at a bearing bracket. The lubrication system comprises a reservoir containing a supply of lubricating oil, from which at least one wick leads to the bearing, the lubricating oil being suppliable to the bearing by the wick. To obtain as long as possible a continued lubrication period with as small as possible a supply of lubricating oil, one or more oilproof cavities are provided as lubricating oil reservoir in a separate bearing cover attachable to the bearing bracket. Such a bearing cover can be postfitted in machines to increase the period of continued lubrication.

Abstract: A liquid ring pump having a control disk interposed between the impeller housing and a cover provided with connecting stubs is disclosed. A seal is interposed between the cover and the control disk and pressed against the control disk by a supporting edge of the cover. The seal further has a central web separating the pressure and the suction spaces formed in the cover. The interior of the impeller housing is sealed from the exterior thereof at the edge resting against the control disk. Sealing at two spaced locations, i.e. at the edge of the housing and between the cover and the control disk, is accomplished with a one-piece seal in accordance with the invention by providing a cup-shaped seal which has at the free end of its circumferential wall a radially outward-extending bead which is pressed against the rim of the impeller housing by an edge of the cover which axially extends beyond the circumferential wall.

Abstract: An improved side channel compressor wherein the compressor comprises first and second compressor stages each including first and second housing halves. In accordance with the invention, the inner housing halves (i.e., the second housing half of the first stage and the adjacently arranged first housing half of the second stage) are each provided with inlet and outlet openings of the same size and shape and with sealing rims surrounding these openings. In further accord with the invention, the second housing half of the first stage is provided with a further sealing rim arranged in the circumferential direction ahead of the outlet opening of that housing half and the first housing half with a further sealing rim arranged in the circumferential direction behind the inlet opening of that housing half.