Assertion: steam engine's steam | /r/Causes | shaft
Facets:
Source sentences:
text: This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor: "(An engine) in which two cams turn together in a closed casing so that steam admitted to the casing will force apart abutments on the cams and cause the cams and the shafts on which they are mounted to turn.