Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 270
Fig. 530. Fig. 531. Fig. 532. Figs. 530, 531, and 532 show expedients to prevent the bolt from turningwhen the nut is being screwed on or off. Fig. 533 is an anclior-hoit flattened and jagged, introduced into a hole inmasonry, and firmly leaded or sulphured in; but later experiments with deepholes…
Mechanical drawing
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