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).
Graph comparing pressure rise against time for two different sized Herzmark single-stage air compressors.
Identifier | WestWitteringFiles\W\September1931-November1931\ Scan026 | |
Date | 30th September 1931 | |
DATE: 30-9-31 BAR: 30.31" HG AIR TEMP: 17°C RPM: 1125 AIR BOTTLE VOLUME: .413 CU. FT. PRESSURE [LBS/D"] LARGE [BORE ? STROKE 1.18"] SMALL [BORE .865" STROKE 1.094" = .645 cu in] HERZMARK SINGLE STAGE AIR COMPRESSOR SHOWING PRESSURE RISE WHEN CHARGING BOTTLES TIME [MINUTES] F.J.A 2-10-31 | ||