Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 373
1510 J. CONCRETE.BRIDGE. — For smallbridges, a concrete archof Portland cement, sandand broken stone are re-liable and lasting struo-tures. 362 CONSTRUCTION AXD DEVICES. … 15100. LOG SAWING MACHINE.—The lever being prop-erly adjusted, and the screw and dogs being placed in position, the saw is rapidlyreciprocated b yturning the drivingshaft. A spring at-tached to the buttof the saw and cen-ter of the pitmanpresses the teethdown upon the bot-tom of the kerf;this…
Mechanical movements
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