Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 354
Fig. 743. Fig. 744. Fig. 745. traverse are 1*1; width of traverse at centre, 2; distance from the centre of thehook to the centre of the traverse, 7*5 ; interior circle of the hook, 3*4; great-est thickness of the hook, 2-8. Assuming (Fig. 744) the diameter of the wireof the chain as 1: interior…
Mechanical drawing
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