Blueprint showing schematics for a double piston damper, air vent ball valves, and value variations.
| Identifier | ExFiles\Box 56\1\ Scan131 | |
| Date | 20th July 1932 | |
| 1-6-31 Hs {Lord Ernest Hives - Chair} 369 DAS'S SCHEMES L.P. PASSAGE CHAMBERED OUT VALUE DIA REDUCED SPRING CHAMBER AIR RELEASE MASK .005" RADIAL CLEARANCE .161 DIA .075 DIA .095 DIA .185 DIA .156 DIA BALLS .050" LIFT .300" 'DELCO' H.P. VALUE HOLE L.P. VALUE HOLES AIR VENT BALL VALVES VALUE VARIATIONS. DOUBLE PISTON DAMPER. ROLLS-ROYCE, LTD. PRINT ROOM JUL 20 1932 DERBY. AR | ||
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).