Modern American locomotive engines; their design, construction and management. A practical work for practical men (1883)
Edwards, Emory, b. 1841 · Bridgeport, Conn., Frederick Keppy · leaf 189
and its continued motion in the same directionfinally closes the valve and prevents any further ad-mission of steam. The steam has now done its work,and must be removed. In the middle of the valve ahollow chamber is formed, of sufficient length to t)penbetween the ports. As soon as the edge of… … Fic. 55-that the exhaust port opens when the steam portcloses, and that both happen just at the end of thestroke. The perfection of a steam valve, other thingsbeing equal, consists in the degree of nicety withwhich its motion is timed relatively to the motion ofthe piston. The functions of the…
Locomotives
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