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).
Instructions regarding a dynamo with an annealed copper commutator.
| Identifier | ExFiles\Box 50\5\ Scan323 | |
| Date | 29th February 1920 | |
| RR 238 (100 BKS.) (BH57. 29-2-20.) MP 22435 ROLLS-ROYCE LTD. INSTRUCTIONS. 19 To Order No. W. A 49 (2) Customer's No. The above dynamo(R3) on which these brushes have been running, has an annealed copper commutator. Signed H.E.W. This Sheet must be filed on completion of the work. | ||