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).
Official order for forged engine valves from Belgrave Engineering Co.
| Identifier | ExFiles\Box 158\4\ scan0251 | |
| Date | 29th June 1938 | |
| To Roy.{Sir Henry Royce} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c.c. JWH. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}16/MH.{M. Huckerby}29.6.38. 1360 ? Will you please pass an official order in accordance with the letter we have written Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}16/JH.29.6.38 tothe Belgrave Engineering Co. for the following valves to be forged to approx. size by their process. 24 Inlet to Ex.29686 in their 7.5/8.5% Chrome. 24 Exhaust Ex.29687 " " 18/20% Chrome. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||