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).
Requesting an official order for one large Armstrong Damper for testing purposes.
| Identifier | ExFiles\Box 152\2\ scan0179 | |
| Date | 5th March 1940 | |
| 1293. To Les.{Ivan A. Leslie} from Rm{William Robotham - Chief Engineer}/Clm.{D. D. Clapham} c. G/JWH. Rm{William Robotham - Chief Engineer}/Clm.{D. D. Clapham}9/MH.{M. Huckerby}5.3.40. Will you please send an official order to The Armstrong Patents Co. for one large Armstrong Damper. We wish to carry out tests on it on our rig. O/N.52509. Rm{William Robotham - Chief Engineer}/Clm.{D. D. Clapham} | ||