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).
Design drawing for a Goshawk I standard type commutator.
| Identifier | ExFiles\Box 50\5\ Scan067 | |
| Date | 21th May 1921 | |
| [ "LEC 1584", "X4337", "BAKELITE", "STL", "PRESSED ON TIGHTLY", "MICANITE", "2° Taper", "4° on DIA.", "BOUND & COATED", "WITH INSULATING", "VARNISH", "HEX", "20 T.P.I. L.H.", "LOCK WITH COPPER BUSH", "1 : 200 TAPER", "GOSHAWK I", "STANDARD TYPE", "COMMUTATOR", "SCALE 4/1", "ROLLS-ROYCE, LIMITED", "PRINT ROOM", "PREPARED BY" ], | ||