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).
Circuit diagram detailing a motor system including windings and a main switch.
| Identifier | ExFiles\Box 62\1\ scan0350 | |
| Date | 5th December 1935 guessed | |
| -3- (6) The system will be more efficient as the volt-drop occasioned by taking the heavy cable up the dash board to the main switch will be obviated. A diagram of the scheme is shewn below. ENGAGING WINDING MAIN SWITCH HOLD ON SERIES WINDING MOTOR. | ||