Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 479
haust pipe is a welcome aid to ventilation. Steam, one of the 418 COMPRESSED AIR chief servants of industry, must be kept and used hot. When itsenergy is used to compress air we have at command a substancewith all the working quality of steam, without having to keep itwarm. As it toils at common… … New Ingersoll Coal Cutter.F, trunnion. B, C, piston rings. A, piston. E, wheel. weighing ten pounds, with air at seventy-five pounds behind it,strikes a blow 160 to 250 times a minute, beginning at the floor tP I^E Drill steels. and making as little slack as a hand pick intelligently wielded.Other…
Inventions · Inventors
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
