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Ramsbottom safety valve
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English
Etymology
en English mechanical engineer John Ramsbottom John Ramsbottom (engineer) 1.
Noun
Ramsbottom safety valve
A kind of tamperproof safety valve for use on locomotives, consisting of two plug-type valves connected by a spring-laden pivoting arm.
en 1951 April Notes and News: Locomotive Notes: London Midland Region Railway Magazine 600 283 The boiler had a large dome over the firebox, inside the cab, surmounted by Ramsbottom safety valves.
en eponyms
en Mechanical engineering