Brake 1
Brake 1 : (1) (Mech Eng) Any mechanism designed to retard or stop motion, usually by friction. Note: Disc type: A brake in which the holding effect is obtained by frictional resistance between one or more faces of discs or pads keyed to the rotating member to be held and fixed discs keyed to the stationary or housing member. Pressure is applied axially. Self-energizing band type: An essentially unidirectional brake in which the holding effect is obtained by the snubbing action of a flexible band wrapped about a cylindrical wheel or drum affixed to the rotating member to be held. The connections and linkages are so arranged that the motion of the brake wheel or drum acts to increase the tension or holding force of the band. Shoe type: A brake in which the holding effect is obtained by applying the direct pressure of two or more segmental friction elements attached to a stationary member against a cylindrical wheel or drum affixed to the rotating member to be held. An air brake is a. an automotive vehicle brake operated by air pressure, or b. an airfoil that is rotated or otherwise extended into the air-stream to decelerate an aircraft in flight. (2) (Metall) A machine used to bend or fold sheet metal. (3) (Fire Pr) A long lever used to pump hand-powered fire engines
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