Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 74
CAHALL VERTICAL WATER TUBEBOILER.—A water drum at the bottomforms the lower head for the tubes. An an-nular drum at the top forms the upper head,through which the smoke passes. The fur-nace and combustion chamber are outside, asis also the circulating pipe, as shown in thecut. 198. VERTICAL WATER… … 199-200. BOILER OFTHE SERPOLLETTRICYCLE.—The steamgenerating surface is madeof iron pipe, flattened andcorrugated, then coiledinto a volute form with theinner end turned up, and the outer end to project through the furnace shell. The cuts show a vertical section and horizontal plan.
Mechanical movements
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