Creighton, William Henry Paul, 1859- · New York, J. Wiley & sons; [etc., etc.] · leaf 348
riation of speed has beenused to actuate mechanism, that governs the incoming energy, togive practical uniformity of rotation within the limits set by the:designer. 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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