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The steam engine familiarly explained and illustrated; with an historical sketch of its invention and progressive improvement; its applications to navigation and railways; with plain axioms for railway speculators (1849)

Lardner, Dionysius, 1793-1859, Renwick, James, 1790?-1863 · Philadelphia, Carey & Hart · leaf 139

An illustration from The steam engine familiarly explained and illustrated; with an historical sketch of its invention and progressive improvement; its applications to navigation and railways; with plain axioms for railway speculators, 1849, leaf 139
/Innm fy thejtuttior. .Km/r. fy7Mrr.Vm;-i-rWt DOUBLE-ACTING STEAM ENGINE. 113 (c) An improvement-has been made in the United Statesin the mode of working the puppet valve. It consists inplacing them by pairs in two different vertical planes insteadof one. The rods then work through four separate…

Steam-engines

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