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).
Schematic diagrams and descriptions for two types of external chassis dynamo-regulators.
| Identifier | ExFiles\Box 31\1\ Scan145 | |
| Date | 14th November 1922 guessed | |
| EXTERNAL CHASSIS DYNAMO--REGULATOR SCHEMES. LOAD 88w 141w (1). Aero type U.B. Dynamo & Regulator. Single pair of carbon contacts in series with dynamo field. Resistance according to varying pressure. The main operating coil across voltage assisted by secondary coil in parallel with field coil. No top speed limit to regulation. LOAD (2) R.{Sir Henry Royce} Bosch Dynamo & Regulator. A variable resistance composed of a quantity of carbon granules between the metal plates connected in series with the dynamo field winding. The main operating coil is across the voltage; a tapping is taken to an auxiliary contact which is made when the | ||