Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 66
172. STEVENS BOILER.— An early type of tubular boilers(1806). The principle is still in use- ><<Y:,^<^//^-^yyy>/y^^y/yyyyyyyy^y^yy^^yy^^y^y.>^yyyyy^y^yyyy.^^, 173. PLAIN CYLIN-DRICALBOILERS, showing^ suspension and setting. One-half the surface of the shells, divided by 10,equals… … w TL n -m 174. HANG-ING WATERDRUM CY-LINDRICALBOILER.— The drum, hanging from the main boiler by necks, gives a large in-crease of heating surface. One-half of shell and all of drum surface,divided by 12, equals boiler horse-power.
Mechanical movements
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