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).
Recommending Le Carbone's brushes over Morgan Crucible's for dynamos and motors based on practical experience.
| Identifier | WestWitteringFiles\G\October1921\ Scan44 | |
| Date | 1st October 1921 | |
| To EFC. from R.{Sir Henry Royce} Copy to GJ. " " PN.{Mr Northey} " " WD.{Mr Wood/Mr Whitehead} " " HS.{Lord Ernest Hives - Chair} " " BY.{R.W. Bailey - Chief Engineer} " " Mr Thacker. ORIGINAL. RECEIVED. R6/G4/10/21. X.4383 X.3945 RE BRUSHES FOR DYNAMOS AND MOTORS. From very definite practical experience at Royce Ltd. it has been proved that Le Carbone's brushes are distinctly superior to those supplied by the Morgan Crucible, and that for such work as our car dynamo Le Carbone's "O" quality is by far the best that can be used for long life and keeping the commutator in good condition. test Order. these for our own stock after test R.{Sir Henry Royce} FHR. | ||