Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 936
e spring to press down the collar d with any approvedforce, and the throttle-valve opened to any required extent, the engine is set in motion. Should itsspeed exceed the stipulated rate, the increased centrifugal force will cause the two balls to diverge,and raising the collar d, will partially… … The degree of force exerted by the spring will always require to be adjusted to suit the nature of thework thrown upon the engine, because a small quantity of steam only will be required when the workis light, and a larger quantity when it is heavy, while the speed should in each case be the satae,…
Mechanical engineering
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