Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 667
he top of the water-back to a higher pointin the boiler; b is the blow-off pipe. Stoves are arrangedwith water-backs. The pipes, a a, are carried above the draw-cocks over thesink, forming air-chambers, to cushion the blow of the water-hammer when the cocks are shut quickly. Beneath the sinkthere… … 1
Mechanical drawing
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