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).
Revised and corrected page from a letter detailing sample dynamo brushes for 20 HP and 40/50 HP lighting sets.
| Identifier | ExFiles\Box 60\1\ Scan013 | |
| Date | 28th January 1927 guessed | |
| Page 2 of Le Carbone letter of 27th January revised and corrected. Details of sample brushes submitted under separate cover:- ITEM 1:- DYNAMO BRUSHES TO DRAWINGS D.51325/6 FOR 20 HP. DYNAMO LIGHTING SET. 1 Set of 2 Main, 1 Control, in grade "EGA" 1 Set of 2 Main, 1 Control, in grade "EG3417" 1 Set of 2 Main only, in grade "LFC3A-B8" (Grade "Z" third brushes to be used with the last). ITEM 2:- DYNAMO BRUSHES TO DRAWINGS D.70964-5-6-7 FOR 40/50 HP. DYNAMO LIGHTING SET. 1 Set of 2 Main, 1 Control, in grade "EGA" 1 Set of 2 Main, 1 Control, in Grade "EG3417" 1 Set of 2 Main only, in grade "LFC3A-B8" (Grade "Z" third brushes to be used with the last). R/P. | ||