Scientific American, Jury 12, 1873.] 23 GRANTHAM’S METHOD OF SHEATHING IRON SHIPS MCLAIN’S SYSTEM is as follows: Outside the iron skin are riveted angle iron ribs, the projecting flanges of which are dovetailin sec- tion, The inner skin is coated with pitch, and the spaces between the dovetail … vertically or diagonal- McLAIN’S METHOD OF COMPOSITE SHIP BUILDING. inches from any ex- ly, of iron. inside planking being composed of wood, it is constructed of posed piece of iron. Figs. 15, 16, and 17 show different sections of a vessel thus sheathed. inner skin. Domestic Economy of Fuel. Figs.…
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