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Richards ~TLe Principles of Shop Manipulation, etc. 25 the steam formed, a given final temperature of super-heating would be produced. The engine would consist essentially of a main working cylinder using this mixture expansively to atmospheric pressure~ an air compressing pump to supply the imprisoned filel at the boiler pressure, and of the mechanism by which the two would be connected and tile exe~ of work delivered. To be continued.doi:10.1016/0016-0032(74)90450-5 fatcat:wepvp52exvbxtddsieltx3oz7y