Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 366
for punching and shearing formed the subjectof experiments by Prof. G. C. Anthony {Amer. Mach., May 22,1913). The apparatus employed consisted of a hydraulic bolsterbelow the die and connected to an ordnance indicator by which indi-cator diagrams of the pressures were obtained {Trans. A. S. M.… … FiG. 12.—Indicator diagrams from punching and shearingexperiments. age tensile strength of 59,000 lbs. per sq. in. with elongation of 27per cent, and reduction of area of 55 per cent. Flat, bevel and spiralpunches of 3 deg. of clearance were included in the tests. The cardswere interpreted for both…
Machine design
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