American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions (1914)
Colvin, Fred H. (Fred Herbert), 1867-1965, Stanley, Frank A. (Frank Arthur), b. 1874 · New York : McGraw-Hill book company ; London : Hill · leaf 628
h for the depth of hole to be drilled.Oil-drill (Morse) — These drills convey lubricant to the point,through holes formed in the solid metal.Where the drills are larger than 2^inches an inserted copper tube is em-ployed to carry the oil to the drill pointand wash out the chips and keep the… … Flat I^) 6oo DRILLS — Continued
Machine-shop practice
Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.
