Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 353
,are 6*5 in length to 4*1 in breadth,and the iron about 1-2 the diameterof the rest of the chain. Chain Couplings.—Fig. 736 isan ordinary coupling link of ananchor chain. The link is ofwrought-iron, the bolt and pin ofsteel, both galvanized. The nextlink is made somewhat longer thanother links of… … FiG. 737.
Mechanical drawing
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