Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 275
king-ring. Fig. 297 is a piston-valve fitted with thesame kind of packingand spring-ring. Piston-speed varies inordinary practice fromabout 300 to 400 ft. perminute in small factoryengines, to about 800ft. per minute for ma-rine engines, and over1000 ft. per minute forthe locomotive,to resist… … Fig. 300. The piston-rod is designedmaximum load on the piston. ENGINE DETAILS. 259 303). Here the stresses change direction each stroke, being com-pressive during the outward stroke and tensile during the inwardstroke ; and consequently the factor of safety must be a large one.The safe stress per…
Steam-engines
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