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Scientific American, Vol. 81, No. 12 (1899) (1899)
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. This-loss is ment during its withdrawal are contained in the larger experienced in securing steam-tight joints either in greatest when the crank is near the half stroke and the these or other moving parts of the engine. The adop- eentral steam chest. The operation of the valves and turning moment… … tical shaft which is at- has resulted in some ex- THE COLWELL DOUBLE-CYLINDER ROTARY ENGINE. © 1899 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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