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).
Letter from Servais Silencers regarding the construction of their silencer using expanded metal, steel wool, and asbestos.
| Identifier | ExFiles\Box 138\1\ scan0277 | |
| Date | 11th August 1936 | |
| X1160 ? SERVAIS SILENCERS [STRAIGHT-THROUGH] SERVAIS SERVICES LIMITED 8 OLD PYE STREET·WESTMINSTER·S·W·1 TELEPHONE: VICTORIA 0824 DIRECTORS: H·DARE LEA N·H·SERVAIS E·R·SWORDER F·SERVAIS (BELGIUM) OUR REF. ERS/IB. YOUR REF. Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}11/JH. 11th August, 1936. Messrs. Rolls-Royce Ltd., DERBY. WYMAN File Dear Sirs, We are in receipt of your letter of the 7th inst. and in reply to your letter dated 15th July we would state there is some difficulty in meeting your request. The Servais Silencer is constructed and packed with a sound absorbing material consisting of expanded metal, steel wool and asbestos in a composite form and it is the construction of the Silencer itself which gives the extra-ordinary results of complete noise absorbtion without loss of power and entirely illiminating backpressure. If we send you portions of this raw materil we feel it will not comply with your wishes and we would rather pay you a visit to discuss the matter further with you with the object of submitting a complete Silencer. Yours faithfully, For, SERVAIS SERVICES LTD. [Signature] Sales Manager. | ||