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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 456

An illustration from American machinists' handbook and dictionary of shop terms : a reference book of machine shop and drawing room data, methods and definitions, 1914, leaf 456
by means of lacings. The belt shown by Fig. 9 has 81-4- per cent, of 1.875 square inchesof section, = 1.525 square inches left after cutting out the five holes.This amount is good for 3000 X 1.875 = 5625 pounds breakingstrain, and as the lacing will tear out under 2500 pounds, it will beseen that… … PI.Gv 8 FIG. 9 Belt Hooks and Lacings working strain for the belt, ori7i5-7-5=343.5 pounds to eachlace. This, too, is too much, as it is less than a factor of safety of 2. The belt to carry 40 pounds working tension to the inch of widthmust also carry about 40 pounds standing tension, making a…

Machine-shop practice

Internet Archive · UMass Dartmouth, Claire T. Carney Library · Public Domain Mark 1.0. Free to use for anything.

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