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
ke of theplunger is from 3 to 4i in. The heaviest single parts of thedrill are the tripod-weights, which are about 100 lbs. each.Next to these in order of weight are the two coils, which weigh about GO lbs. each. Thelargest piece in the entire drill is the cylindrical casing, which is 38 in. long… … Fio. 2.1—Electric rock-drill.
Mechanical engineering
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
