Steam Engine.
Description:
Patent for a new and improved steam engine. This design "consists in the construction and novel arrangement, in connection with a cylinder having bearings for the piston-shaft at each end and steam and exhaust ports at opposite ends, of an axially-elongated piston having opposite spiral threads or ribs of gradually-decreasing pitch from the end at which the steam enters to the end at which it escapes" (lines 19-26).
Date:
July 3, 1883
Creator:
Wilson, John C.
Partner:
UNT Libraries Government Documents Department