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Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
he boat was an inclined plane, by which the loaded trucks reached the lower deck, and another inclined plane led from the upper deck to the opening in the stern, which was exposed when the shutters were lowered These shutters were supported by chains, and formed chutes. Stone′ware. A grade of ceramic ware of great hardness and value. The stoneware of London is made of pipe-clay from Dorsetshire and Devonshire, calcined and ground flint from Staffordshire, and sand from Woolwich and Charlton. The dry clay is pulverized and sifted. The ingredients are compounded in different proportions, according to the fineness of the ware, its size, and purpose. The round articles are turned on a wheel, dried, and shaved in a lathe. Articles of other shapes are molded. The articles are then stacked in the kiln, with pieces of well-sanded clay placed between them, to prevent their adhering. A slow fire dissipates the moisture, and the heat is then raised until the flame and ware have the