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).
Page explaining the T. & M. Patent Dynamo and its application in automobile lighting systems.
| Identifier | ExFiles\Box 3\5\ 05-page010 | |
| Date | 1st October 1911 guessed | |
| loss in the armature will only be half of what it would be with an ordinary dynamo. In other words, given two machines having the same size armatures, the one constructed according to the T. & M.{Mr Moon / Mr Moore} Patent system will supply approximately double the current for the same temperature rise, and consequently for any given load the T. & M.{Mr Moon / Mr Moore} Patent Dynamo will be the smallest machine, other conditions being equal. Figure II shews the wiring of the T. & M.{Mr Moon / Mr Moore} Lighting System as applied to Cars, etc., in its simplest form. The Dynamo, Battery and Lamps are all connected in parallel, and an automatic Cut-out is provided to disconnect the Dynamo as soon as its speed drops below the cutting-in speed of the machine for the particular voltage it has been designed for. The voltage of the system varies to some extent according to the state of the Battery, especially when charging only, but as soon as the lights are in use the lamp load tends to counterbalance the charging current and steadies the voltage of the cells so that very little variation takes place. The lights are, therefore, practically unaffected and no other form of voltage regulation is required. 39 | ||