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).
Air pressure relief valve, with an attached letter from Springfield.
| Identifier | ExFiles\Box 125\1\ scan0017 | |
| Date | 16th August 1921 | |
| X1729 To BY.{R.W. Bailey - Chief Engineer} from EWT. c. to Hs.{Lord Ernest Hives - Chair} EWT1/FG16.8.21. X.1092 - RE AIR PRESSURE RELIEF VALVE. X.1729. X.3902 Attached herewith is copy of letter from Springfield reference OY2/G28.7.21, dated July 28th. for your information. EWT/FG. | ||