Creighton, William Henry Paul, 1859- · New York, J. Wiley & sons; [etc., etc.] · leaf 348
ariation of speed has beenused to actuate mechanism, that governs the incoming energy, togive practical uniformity of rotation within the limits set by thedesigner. The principal methods of governing steam-engines are: 1. Throttling.—By regulating the pressure, but not the vol-ume of the steam… … Fig. 168. Throttling (Fig. 168).—If a circular disc be pivoted at anycross-section of a pipe, a more or less efficient and easy means ofregulating the weight of steam that passes will be secured. Adisc of this character arranged in a practical manner is called abutterfly valve or throttle. As the…
Steam-engines · Heat-engines
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