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).
Mr. Elliott's investigation into different types of valve springs.
| Identifier | ExFiles\Box 56\2\ Scan071 | |
| Date | 23th February 1929 | |
| E.{Mr Elliott - Chief Engineer} RG.{Mr Rowledge} Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} c. to SG.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} X290 R2/M23.2.29. VALVE SPRINGS. X. 290 X. 2993. Mr. Elliott's investigation is excellent and should be carried on as long as it shews progress towards solving the mysterious difference between diffarent springs. Apparently we have a few items towards perfection in - (1) Taper spring (our old practice.) (2) Open ended springs. (3) Low max. with larger stress range. ) All these are ) very economical ) for space and ) very practical. R.{Sir Henry Royce} | ||