Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 107
arts of the hammer are as follows: D Tons. Tup with piston and rod 80 Cylinder 22 Entablature 30 Legs of hammer-frame with guides 250 Wrought-iron cross-stays 25 Foundation-plate 90 Valves, valve-gear, and miscellaneous 35 Total weight of structure above ground 532 Anvil and anvil-block 750 Total… … HANGER. 97 ing post class, with jibs formed of curved box-girders, the part of each crane below the ground linebeing also a box-girder of rectangular section tapering from the ground level to the bottom. Theweight of each crane with its load is carried by a ring of live rollers at the ground level,…
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