Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 468
radii bars at B ; when eased, the plug drops readily to its seat. The levelof the canal is about 35 feet above that of the river, and the discharge is solarge that it produces a scour in the canal. When the level of the canal risesabove the crest of the tube it forms an overfall; a depth of a…
Mechanical drawing
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