The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 43
valve ; this pressure measures the elasticity ofthe steam when it begins to escape. When steam of veryhigh temperature is employed, the admission of atmosphericair is dangerous, and under such circumstances this valvemay be properly termed the unsafety valve. In order tograduate the lever, a weight… … EXAMPLES. (czues. 12. The length A F of a lever =14 inches ; the dis-tance F Q ==^ 2 inches ; the weight of the valve and pin = 5lbs.; the weight of the lever F A = 8 lbs., and the area ofcircular value in the narrowest place = 6 square inclies ; theit is required to find the load W, so that when…
Mechanics, Applied
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