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).
Requesting information on single plate clutches of the De Dion type.
| Identifier | ExFiles\Box 20\3\ Scan029 | |
| Date | 25th July 1912 | |
| Re Single Plate Clutches. IBB16/L25712 Mr Mercer. 25.7.12. Will you please look up immediately information concerning single plate clutches of the De Dion type. All other work (except the completion of the grinding machine patent) should be put on one side for this purpose. X 9624 | ||