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 Cambridge Instrument Company discussing the development of an accelerometer.
| Identifier | ExFiles\Box 138\2\ scan0093 | |
| Date | 4th March 1937 | |
| 1163. TELEGRAMS: INSTRUMENT, CAMBRIDGE. CODES: A.{Mr Adams} B. C. (5TH AND 6TH EDITIONS). WESTERN UNION : BENTLEY'S. TELEPHONE: CAMBRIDGE No. 4415. CAMBRIDGE INSTRUMENT COMPANY, LIMITED. HEAD OFFICE AND SHOWROOMS: 45, GROSVENOR PLACE, LONDON, S. W. 1. WORKS: LONDON AND CAMBRIDGE. MANUFACTURERS OF MECHANICAL & ELECTRICAL INSTRUMENTS OF PRECISION. YOUR REF. Rm{William Robotham - Chief Engineer}/GryS/R...... CAMBRIDGE, ENGLAND. IN REPLY PLEASE QUOTE....GCM/IGB. 4th March, 1937. Messrs.Rolls-Royce, Ltd., Experimental Dept., Derby. For the attention of Mr.Grylls. Dear Sir, Immediately after your visit we experimented with the proposed mechanical horizontal accelerometer, as discussed at your visit. Preliminary tests however shew that we should have great difficulty in getting sufficient damping to give a steady reading on a moving motor car subject to bumps and vibration. We then invented an alternative form, using a liquid gauge which is most promising. The instrument is just being completed and we hope to send it to you for trial in a few days. Yours faithfully, For:- CAMBRIDGE INSTRUMENT COMPANY, LTD. [Signature] Joint Managing Director. P.S. We could not send it, as it must be kept reasonably upright. I am afraid it will have to be fetched, or sent by road sometime. | ||