Machine drawing, a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1920)
Griffin, Charles Lewis, 1867- [from old catalog], Adams, Charles Clyde, 1882- [from old catalog] joint author · Chicago, American technical society · leaf 34
ed by the principles ofprojection. A simpler and much more convenient method is toapproximate these curves with arcs of circles, using the height ofthe head as a radius, as shown. In case it is desired to show more chamfer as in Fig. 26, thetop of the head may be cut off at FK and GH at an angle of… … Fig. 26. Hexagonal Bolt Head with Chamfer 24 MACHINE DRAWING section DAB and BCE are drawn as arcs of circles, but insteadof being tangent to the top they are tangent to the line KH, which indicates the place wherethe chamfer cuts the flatsides of the hexagon. Square Head and Nut-Fig. 27 shows…
Machinery
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