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).
Instructions for modifying a Vauxhall type Wraith water pump for experiments with Ferobestos bearings.
| Identifier | ExFiles\Box 149a\1\ scan0315 | |
| Date | 25th October 1938 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} 1269. Rm{William Robotham - Chief Engineer}/Std.9/JH.25.10.38. Water Pump - Ferobestos bearing Vauxhall type. In connection with further experiments which we wish to make on the Vauxhall type Wraith water pump with Ferobestos bearings - will you please carry out the following. (1) Modify the pump inlet to Rm{William Robotham - Chief Engineer}/Std's. verbal instructions by cutting off present inlet bend and welding an inlet pipe of 1 1/2" external dia. so that swirl given to the incoming water is unidirectional with the rotor movement. (2) Make two new bushes to EXS.824 in Attwater material send you herewith. Rm{William Robotham - Chief Engineer}/Std. | ||