Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . rgmaster of Cfausthaf, in theUpjier Hartz, wfio used two pump-rods, which, sideliy side, went up ami down a shaft, and fixed to themsmall ]ifatfoims and handfes at afl tfiose points of therods wfiicfi came opposite after eveiy stroke. So, by MAN-ENGINE. 1382 MANOLE. simply chunking liis st:uul after each stioke, fromone rod to tile other, ii man would
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . rgmaster of Cfausthaf, in theUpjier Hartz, wfio used two pump-rods, which, sideliy side, went up ami down a shaft, and fixed to themsmall ]ifatfoims and handfes at afl tfiose points of therods wfiicfi came opposite after eveiy stroke. So, by MAN-ENGINE. 1382 MANOLE. simply chunking liis st:uul after each stioke, fromone rod to tile other, ii man would be lifted U|i tothe surfaee. Tlie iilau was ailopted in (ienuany, liel-giuiii, France, Enj;land, but the engine was drivenby special machinery, that at the deep silverdeadmines of Przibram in Bohemia iiaving, since 1854, asteam-engine with two cylinders and cataract man-engine reaches a depth of 2,40(1 feet, and3,000 men go up and (U)wn it daily, in three shiftsof 8 hours each. It has a stroke of 10 feet. Asimilar engine at another shaft in the same mine hasa stioke ui 12 feet. At tlie Trevesan nuue in Cornwall, which is 309fathoms deep, a man-engine has been constrnctedior lifting the miners and lowering them to their. Man-Engine. •work, a de|ith of 240 fathoms. It has two parallelvertical rods, which are provided with stages orplatfoims and aic reciprocated ]iast each other. Thestages are 2 fathoms a|)art, and each rod receives amotion througli the same A man stepping on to the lower platform, say No. 1of the left-hand rod, is raised by the lifting of therod which brings him to the level of platform Xo. 2on the other rod, wliicli is at its lowest ; onto this he steps. When platform No. 2 rises hereaches the level of platform No. 3 on the opjio-siterod, and so he keeps stepjiing from one side to theother, rising 12 feet between each step. The plat- forms are o]iposite to each other at the dead pointsof tlie engine-crank, and thus pause for a sli
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Keywords: ., bookcentury1800, booksubjectin, booksubjectmechanicalengineering
