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 requesting Electrolytic Vacuum Valves for experimental use in controlling a chassis lighting dynamo.
| Identifier | ExFiles\Box 41\2\ Scan006 | |
| Date | 26th September 1919 | |
| X. 3646 EFC9/T. 26th Sept. 1919. Captain Briggs, R.A.F., Central House, Kingsway, London. Dear Sir, RE ELECTROLYTIC VACUUM VALVE Colonel Barrington suggested our writing to you as we are anxious to obtain for experiment, some of the new Vacuum Valves which are used so widely at the present moment in wireless telegraph work. We are interested in them because there may be a possibility of controlling the out-put of a chassis lighting dynamo by this means. Could you therefore, put us in the way of obtaining a few of these for experimental purposes. Thanking you in anticipation. Yours faithfully, | ||