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 proposal for a perforated sheet rubber component with suggested dimensions and ferrules.
| Identifier | WestWitteringFiles\T\January1929-February1929\ Scan022 | |
| Date | 18th January 1929 guessed | |
| (2) It would seem advisable to have some design of sheet rubber equivalent to perforated so that it would squeeze down from say .25 to .2 and still leave some cavities.- .15 1.5 in thin part. I am suggesting ferrules to allow for say .2 rubber when the inner plate is firmly tightened. Naturally there must be some of the ferrule bolts that fit so as to definitely locate the engine fore and aft. .25 .15 Suggested section of rubber. <--.15--> .25 Ferrules arranged to compress to .225 - i.e. .050 per pair of rubbers. | ||