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).
Submitted type of piston ring already being used for aero work.
| Identifier | ExFiles\Box 16\1\ Scan212 | |
| Date | 4th October 1928 | |
| ROY.{Sir Henry Royce} c. Rg.{Mr Rowledge} c. Hs.{Lord Ernest Hives - Chair} ----------- X741 BY10/G.4.10.28. PISTON RINGS. ----------- The type of ring submitted is actually being used by us for aero work in a somewhat improved form. BY.{R.W. Bailey - Chief Engineer} By | ||