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).
Instruction sheet specifying modifications to brushes and springs for an order.
| Identifier | ExFiles\Box 60\1\ Scan218 | |
| Date | 1st December 1924 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To 19 Order No. P.D.47 (2) Customer's No. specifying as follows:- 1 The C angle to be 133°. 2 Morganite brushes of the standard grade. (EG2), but having a bevel of 30° in place of the present 15°, to be fitted. 3 A new type of spring (Pattern attached) having a more clearly defined point of contact with the brush, and rising vertically from the brush to give more clearance before sloping down to the spiral. The control brush angle of 133° is subject to confirmation on the two higher output machines being produced for us; any necessary final adjustment being effected by ourselves. Signed C.A.P. This Sheet must be filed on completion of the work. | ||