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).
Experimental order for six sets of starter motor brushes from the Morgan Crucible Co.
| Identifier | ExFiles\Box 61b\3\ scan0096 | |
| Date | 1st January 1929 | |
| To Roy{Sir Henry Royce}/Ms. X6050 EFC3/T2.1.29. STARTER MOTOR BRUSHES D.71279 Herewith please find copy of a letter from the Morgan Crucible Co. in answer to our enquiry concerning starter motor brushes with reduced frictional effect (mechanical). We should be pleased if you would order up experimentally six sets of such starter motor brushes to drawing D.71279 but in the grade Morganite Link CM5H which they have recommended. Will you please make it quite clear to them that this is an experimental order and also arrange for the brushes to be handed to the Expl. Elect. Dept. on receipt. EFC. | ||