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).
The supply and standardisation of Anodic Oxide treated petrol drain ball valves for the Phantom III and 30 HP Wraith.
| Identifier | ExFiles\Box 93\2\ scan0237 | |
| Date | 30th April 1938 | |
| 304. To By.{R.W. Bailey - Chief Engineer} S. to Ds. Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe}1/JH.30.4.38. Phantom III - Petrol drain ball valves. Anodic Oxide treated. A supply of the above has been arranged by Mx{John H Maddocks - Chief Proving Officer}/Scott, 50 for Cricklewood and 50 for Hd.{Mr Hayward/Mr Huddy} at Derby. We agree to this being standardised on the evidence of Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} and are fitting a pair to 35.EX at the first opportunity. This is also applicable to the 30 H.P. mand Wraith The standardisation of altered drain pipes recently issued (Sheet No.P.19. 23.2.38) should be held in abeyance until further evidence is available on the success of this treatment. Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe} | ||