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).
Modification to a petrol pump diaphragm.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page183 | |
| Date | 24th January 1933 guessed | |
| -2- PETROL PUMP Lec. 3184. The four larger A.C. fabrics were replaced by a diaphragm consisting of one layer of A.C. plus one layer of "single ply" bladder. | ||