Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 217
eam acting on the piston. This isusually done in one of two ways — 1. By throttling ; that is, by vary-ing the initial pressure of the steamsupplied, the point of cut-off remain-ing constant. 2. By variable expansion ; that is,by varying the point of cut-off in thecylinder, the initial pressure… … GOVERNORS. ball, and F = centrifugal force due to speed of rotation, li = heightof cone of revolution, and r = radius of rotation of ball. Then,if the speed of rotation is constant, the ball remains at a constantdistance, r, from the axis of rotation by the action of the centri-fugal force F. The…
Steam-engines
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