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Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
orizontal branch b arranged to be swung around over the man-hole of the tender. It is preferable to have both pipes turn upon a joint at c, below the surface of the ground, as there is then less risk of freezing. The water is cut off at pleasure by a valve d operated by a hand-wheel e. 2. (Nautical.) Tanks for ships' use should be of galvanized sheet-iron; are usually rectangular in plan, four feet square, and from four to six feet deep. They hold from 400 to 600 gallons. A gallon is 1604 of a cubic foot. They are stowed at the bottom of the hold on a skeleton floor. Each has a man-hole in the top, and its shape is adapted to the part of the hold which it is intended to occupy. Moody floating-tank. 3. (Petroleum.) The large development of the petroleum industry has given rise to various tanks, particularly designed for that class of oils which, in consequence of their combustible character, require particular care for their safe keeping. See oil-tank, page 1558.