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).
Blueprint showing a noisy dynamo coupling for a 4 1/2 Bentley.
| Identifier | ExFiles\Box 130\2\ scan0027 | |
| Date | 6th July 1936 guessed | |
| NOISY DYNAMO COUPLING 4 1/2 BENTLEY B.31 GP 980 MILES. RUBBER. NO CHAMFER SHARP EDGE. | ||