The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 406
earch for economy renders desirable a valve actionwhich will not cut away so much of the possible effective area of thesteam diagram as is lost, for instance, in Fig. 74. Simpler than thearrangements with separate valves and ports for admission and ex-haust, and with no limitations as to speed, the… … Fig. 252. — Meyer Valve with Variable Lap. (6) The Meyer Valve Gear. — In Fig. 252 the main valve Vmis extended beyond the lap edges, so as to enclose the ports P, P; andon its flattened back rides the cut-off or expansion valve Ve, whichcontrols the passage of steam through the ports in the main…
Steam-engines · Steam-turbines
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