From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Description of a lubricating system for a bearing using porous, oil-permeable collars.
| Identifier | ExFiles\Box 114\2\ scan0258 | |
| Date | 19th December 1935 guessed | |
| axially and is provided with a radially disposed flange 30 to embrace the ring 11 with slight clearance. Thus there is formed an annular chamber 31 between the rings 11 and 12 and the housing 28, adapted to receive and collect any oil which may be thrown off from the lubricated members during rotation of the bearing. The lubricating means of this invention is mounted in and carried by the retainer assembly 16, and forms a part thereof. It comprises lubricant distributing members associated with each 10 of the balls 13, together with reservoir or storage members of relatively large oil-carrying capacity adapted to feed oil to the distributing means. In the form illustrated, the distributing members consist of a collar 32 of rigid porous, oil-permeable material surrounding each of the balls 13. As best shown in Fig. 3, each of the collars 32 is of an internal diameter to make a loose rubbing fit on its associated ball, and is of a length to make a snug fit within the retainer 16, between the web 19 thereof and the member 18. The collars 32 may be formed of any porous, non-abrasive 20 material capable of absorbing oil, which is sufficiently hard to prevent wear by the balls, is sufficiently rigid to resist deformation under pressure, and which has a cellular structure sufficiently fine to prevent excessive withdrawal of oil by the balls. A material suitable for the purpose and preferred by me is the metallic alloy manufactured by the Amplex Manufacturing Company of Detroit, Michigan, and known as "Oilite", but it is to be understood that various kinds of porous metals and metal alloys, porous condensation products of phenol, such as the well known Bakelite, and any other material having the desired capillarity, rigidity and strength, may be used. 30 The spaces within the hollow retainer and between the adjacent collars 32 is packed with a suitable loose, porous, oil-retaining material having a large capacity for retaining oil and adapted to form a reservoir for supplying oil to the rings 32. - 5 - | ||