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).
Requesting the results of tests on different makes and types of carbon for dynamo brushes.
| Identifier | ExFiles\Box 50\5\ Scan241 | |
| Date | 18th October 1923 | |
| TO EFC. FROM R.{Sir Henry Royce} X.4333 R1/M18.10.23. X.4333 - RE. DYNAMO BRUSHES. We are waiting to hear the results of the test of different makes and types or carbon for the dynamo brushes. R.{Sir Henry Royce} | ||