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Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
s. The former are usually in several pieces, called flaps, which are hinged together and fold into a casing called a boxing. The principal piece is a front shutter, and the auxiliary leaf is a back flap. A flag-shutter has but one leaf. Some shutters are arranged to be opened and closed by a sliding movement, either horizontally or vertically; and others, particularly those for stores or shops, are made in sections so as to be entirely removed from the window. Wire shutter. Howards' wire shutter consists of a strong wire grating attached at each side to a band of spring-steel or brass kept in place by a groove in the sash. The lower end is secured to a horizontal bar, and the upper to a roller, by which the shutter is raised or lowered, winding or unwinding. 2. (Founding.) A gate for cutting off the supply of metal to a mold. See shuttle. Shutter-fastening. Shut′ter-fast′en-ing. A hook or catch for fastening a shutter; open or shut. The example has a