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 Mr. C.R.N. Minchin regarding Mr. Royce's scheme for a battery full charge indicator, complete with a diagram.
| Identifier | ExFiles\Box 60\3\ Scan008 | |
| Date | 7th March 1927 | |
| X4040 EFC {E. Fowler Clarke - Electrical Engineer} 2/T. 7th March, 1927. Mr. C.R.N. Minchin, 50, Grosvenor Gardens, London, S.W.1. Dear Mr. Minchin, We now have a note from Mr. Royce about his scheme for the battery full charge indicator, but he is not very clear exactly as to what the arrangement is. We think, from his description, he means this :- [Diagram of a device connected by a tube] Handwritten text next to diagram: To atmosphere Rubber tube from cell and we have such an arrangement running in order to see how it works on the bench, though we have not gone far enough with it to know what happens in the long run. Perhaps you would say if this is not the right idea. We enclose a copy of a report we have circulated in connection with the special P & R 20 HP. battery, as a result of your M {Mr Moon / Mr Moore} /5. of the 12th February. Contd. [Faint reversed stamped text at the bottom] CERTIFICATE OF INSPECTION | ||