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Scientific American, Vol. 36, No. 17 (April 1877) (1877)

leaf 9

An illustration from Scientific American, Vol. 36, No. 17 (April 1877), 1877, leaf 9
either of these plates, varying with the smoothness and perfection of the fit. If Metals on metals, wet 1GJ' Smooth surfaces, greased... 4° we disregard the element of adhesion, and use, as Mr. Ihn- weighing about 22 lbs., will, from the vacuum between the Smooth surfaces, best results. 1|° two… … under which many slide valves operate, Bochet concludes, the co-efficient varies they would be in more perfect contact, with the velocity of sliding, how can and would require more power to slide we assume a fixed co-efficient for a them. In other words, the co-efficient slide valve when its…

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