Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 68
172. STEVENS BOILER.—An early type of tubular boilers(1806), The principle is still in use- and setting. equals boiler horse-power 173. PLAIN CYLIN»DRICALBOILERS, showing ^ suspension One-half the surface of the shells, divided by 10, … ff TT rr re 31 174. HANG-INGWATERDRUM 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
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
