Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 68
ket, whichwill become enlarged and make a misfit for other diills The standard taper for drill shanks may be considered to bewhat is known as the Morse. This taper is | inch to the foot.There is another known as the Brown & Sharpe or Jarno wliichhas a tai)er of -^^ inch to the foot. No attempt… … AlAnilXE SHOr WORK. 45 Drills of cylindrical form are also made with straight flutesas shown in V\g. 63. The} are used for drilUng soft metals, suchas brass, especially when the drill passes entirely through thepiece. .Vs it hreaks through the luetal, a drill with spiral flutestends to draw itself…
Mechanical engineering
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