Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 215
Fio. 2.1—Electric rock-drill. … Fia. 24.—Electric diani(>iul-(lrill. the core is fastened a ride-bar rotating the drill, to the other a rod carrying the drill-chuck.The action of the drill depends upon the following experimental fact:An iron bar jilaced DRILLS, EOCK. 199 within a coil of copper wire through which a current of…
Mechanical engineering
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