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 to L. M. & S. Carriage and Wagon Dept. regarding a new patented system of voltage control for train lighting dynamos.
| Identifier | ExFiles\Box 60\3\ Scan174 | |
| Date | 5th October 1932 | |
| X6092 HS{Lord Ernest Hives - Chair}/Wst.3/AD. October 5th, 1932. Mr. Purvés, L. M & S. Carriage and Wagon Dept. Derby. Dear Sir, We understand that the L.M.& S. have obtained a new system of voltage control for the dynamos used in train lighting. As we are interested in all forms of such control in connection with our chassis dynamos we should be much obliged if you could give us the opportunity of coming to your Works and having a talk with your engineers regarding the merits of this new controller as compared with the more usual vibrator regulator control. We understand that the system employed on the L.M & S is fully patented but we are anxious to get an idea of the principle of operation. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||