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).
List of technical observations regarding a pressure arm and brush assembly.
| Identifier | ExFiles\Box 166\1\ img080 | |
| Date | 5th August 1936 guessed | |
| -2- (7) Some friction in the pressure arm bearing, with a light pressure-arm head, would be an advantage. (8) It would be more convenient, from the point of vire of moving the brush in and out of the holder, to have a little more backward movement of the pressure-arm. (9) If the surface of the bearing wall is machined dead flat, and the other points adhered to, then the amount of clearance, axial and circumferential, between brush and holder, does not matter providing it is not less than .004". (10) It is understood that the brush level angle is 130° to 150°. Hs{Lord Ernest Hives - Chair}/Wst, | ||