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Scientific American, Vol. 38, No. 25 (1878) (1878)
leaf 3
ric is then nearly The. particular point at The buffer rod and the link below it, which together | which the valve does actually close will depend upon the All four valves are] form, as will be seen, a knee joint, are nearly in one vertical | position of the sliding block on the eccentric rod. The… … fixed to the cylin- fact accomplished der, The other end that one machine of the same lever is can do the work of © 1878 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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