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).
Internal memorandum requesting an order for various experimental grades of Morganite dynamo brushes.
| Identifier | ExFiles\Box 166\1\ img015 | |
| Date | 7th February 1933 | |
| x6093 ROY.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Wst. Hs{Lord Ernest Hives - Chair}/Wst.15/KT.7.2.33. MORGANITE DYNAMO BRUSHES. Following on conversations we have had with Messrs Morganite-Crucible Co's representative regarding dynamo brushes, will you please order for us the following brushes :- Four D.51295, 20/25 dynamo brushes, and Two D.51294, 20/25 dynamo brushes, in their grade EGO. and a similar quantity in their grade Link'B'. Also four D.71256/7 and two D.71258/9 brushes, also in their grades EGO. and Link'B'. respectively. These are experimental grades of brushes we wish to try with a view of improving commutation on our dynamos at high speeds. Hs{Lord Ernest Hives - Chair}/Wst. | ||