Steam engines, prepared in the Extension division of the University of Wisconsin (1919)
Shealy, Edward Marvin · New York, McGraw-Hill · leaf 181
Fig. 101. inventor, is a form of double admission valve, and is used to aconsiderable extent on locomotives. Live steam is admittedpast the outer edge of this valve and also through the passage Acast in the body of the valve. When the outer edge of the valveuncovers the port for admission the… … Fig. 102. same as with a double ported valve. In a similar way, when theouter edge of the valve closes the port for cut-off the oppositeend of the passage is also closed. The Trick valve gives doubleadmission but does not give double exhaust since the passage Ais not open to exhaust at any time. In…
Steam-engines
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