Ramsbottom safety valve

noun

A kind of tamperproof safety valve for use on locomotives, consisting of two plug-type valves connected by a spring-laden pivoting arm.

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Meanings

nounRamsbottom safety valve (plural Ramsbottom safety valves)

plural Ramsbottom safety valves

  1. A kind of tamperproof safety valve for use on locomotives, consisting of two plug-type valves connected by a spring-laden pivoting arm.

    The boiler had a large dome over the firebox, inside the cab, surmounted by Ramsbottom safety valves.

    1951 April, “Notes and News: Locomotive Notes: London Midland Region”, in Railway Magazine, number 600, page 283

Origin

Named after English mechanical engineer John Ramsbottom.

Full word history & related roots →
Cite this entry
APA

Ramsbottom safety valve. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Ramsbottom%20safety%20valve

MLA

“Ramsbottom safety valve.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Ramsbottom%20safety%20valve. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Ramsbottom safety valve,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Ramsbottom%20safety%20valve.

Source: Ramsbottom safety valve on Wiktionary, CC BY-SA 4.0.