Ramsbottom safety valve

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

Definition of Ramsbottom safety valve

  1. :  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

Seen and Heard

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to criticize severely

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