Sketch of a dynamo fabric drive component, noting that the holes are elongated.
| Identifier | ExFiles\Box 11\4\ 04-page044 | |
| Date | 8th May 1932 guessed | |
| 19EX : dynamo fabric drive hole elongated LOP E 78944 | ||
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).