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).
Modification to a push-button switch for separate circuit feeding.
| Identifier | ExFiles\Box 64\3\ scan0060 | |
| Date | 12th January 1926 | |
| Contd. -2- EFC1/T12.1.26. We should perhaps mention that in accordance with R1/M25.11.25. the push button switch will be made into a three-point switch so that the green circuit and the red circuit at present both taking current from the point D on the diagram will be fed independently from the push button switch. EFC. | ||