Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 271
l band around the jaws tokeep them together before insertion in the hole and to free the jawswhen they are to be removed. The bolts may have a head at thetop, or a screw with a nut, or the lower nut may be formed as a head.Fig. 539 is a bolt with a fang-^wt or corner turned down anddriven into the… … Fig. 5S MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. 255 Fig. 541 is a ha7iger-ho\t; the lag-screw part is screwed into the woodenbeam, the hanger then put over the bolt, and the nut put on.
Mechanical drawing
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