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).
Inability to test a Servais silencer and comparing its construction to the Burgess type.
| Identifier | ExFiles\Box 152\3\ scan0207 | |
| Date | 2nd November 1937 | |
| W/S. {Derby Works / Sales} To Cx. {Major Len W. Cox - Advertising Manager} from Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} 1297 Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} 12/MH. {M. Huckerby} 2.11.37. Replying to your memo Cx {Major Len W. Cox - Advertising Manager} /Ck {Mr Clark} 1/CP25.10.37, we have not had the opportunity of testing a Silencer made by Mons. Servais, but in reply to a letter addressed to EP {G. Eric Platford - Chief Quality Engineer} by a Mr.E.R.Sworder of Servais Services Ltd., in July 1936 we asked them to send us a sample of the sound absorbing material used by them, and unfortunately received no reply. We made a further request for this material in August 1936 and again failed to get a reply, therefore we dropped the matter from this end. Looking at the advertised photographs of the Servais Silencer it appears to be of similar construction to the Burgess type, but using a different type of sound absorbing material, that is why we were only interested in the material, as we have done a lot of experiments with the Burgess silencer. If, however, you could obtain more details for us, or even get us a silencer for trial purposes we should be only too pleased to investigate further. Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} | ||