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).
Modification instructions for the Wraith III water pump, referencing blueprints and associated parts.
| Identifier | ExFiles\Box 149a\1\ scan0160 | |
| Date | 12th November 1937 | |
| H.S. (crossed out) C. Rm.{William Robotham - Chief Engineer} (crossed out) c. Rm{William Robotham - Chief Engineer}/Std. (crossed out) 1269 BY/Ald.{F. Allwood - Experimental Design}7/G.12.11.37. WRAITH 111 - WATER PUMP. SEC. 5160. S.CD.176 Modification to Water Pump. Please receive herewith two blueprints of S.CD.176 Modification to Water Pump and Ex. 231 Bearing. These to be used together with the following existing parts :- E.81046 Spring 1 off. E.52148 Distance Piece. 1 off. Rm{William Robotham - Chief Engineer}/Std. will supply the necessary "Plasco" packing. Please instruct one set. BY/Ald.{F. Allwood - Experimental Design} old | ||