Steam engines, prepared in the Extension division of the University of Wisconsin (1919)
Shealy, Edward Marvin · New York, McGraw-Hill · leaf 30
n slide valveadmits and exhausts steam. The steam ports completely sur-round the valve so that a large port opening is secured with asmall movement of the valve. This valve does not require abalancing plate because the steam pressure acts on all sidesof the valve equally, thus making it perfectly… … Fig. 10. of the steam. In the automatic high speed engine, the admissionpressure of the steam is constant, the speed being controlled bychanging the point of cut-off, and thus regulating the volume ofsteam admitted to the cylinder to suit the amount of work beingdone. The latter is the more…
Steam-engines
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