Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 233
d the travel of the valveis thereby reduced. Thisgovernor is capable of veryclose regulation, and whenthe speed exceeds a givennumber of revolutions, thesteam supply may be en-tirely cut off. The Proell Governor.—Fig. 238 consists of two in-verted ball-arms which aresuspended by the curvedbell… … VALVE Fig. 237. GOVERxYORS. 217 the initial compression in the spring, the balls move outwarfls, andthe sleeve rises from its bottom position, as shown in the ligure,towards the highestposition, shown dotted. The points AA, atwhich the ball-armsare pivoted, are chosenoutside the centre linesof the…
Steam-engines
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