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Ramsbottom safety valve

noun Rams·bot·tom safety valve \ ˈramzˌbätəm- \

Definition of Ramsbottom safety valve

: a safety valve used especially on locomotives in which two valves are pressed down by a single spring attached to a crosspiece prolonged to form a hand lever by which the valves may be eased up to test their adjustment

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Origin and Etymology of ramsbottom safety valve

after John Ramsbottom, 19th century British mechanical engineer

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