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).
Blueprint drawings for various low pressure and damper valve types and tests.
| Identifier | ExFiles\Box 105\3\ scan0257 | |
| Date | 4th July 1932 | |
| 4-7-32 .075" CHAMFERED L.P. EXTENSION TYPE. - (HS{Lord Ernest Hives - Chair} 657/A) "D" TYPE - LOW PRESSURE EXTENSION VALVE '005" MASK CLEARANCES 'OSS HOLES BARREL MASK VALVE - EXT: PRESS: TESTS. JIII DAMPER VALVE NOISE TESTS. N SCH 3405. HS{Lord Ernest Hives - Chair} 651 SHEET II A.B. | ||