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Devices For Conveying Motion By Means Of Endless Flexible Members
(AREA)
Abstract
Automatic tensioner of chains of transmission, to spontaneously absorb or compensate the lengthening of the chain caused by the operation, characterized in that it has two fundamental parts: a fixed part, integral with a stationary organ of the machine on which the transmission is mounted and a moving part, one of whose elements meshes constantly with the chain, the movable part being requested by a spring towards the position of maximum stretching of the chain, this tendency of the spring being counteracted by the tension of the chain, and being regulated the displacement caused by the distension of the spring when the chain is lengthened by a rack and ratchet mechanism, the rack being integral with the moving part and the ratchets being integral with the fixed part. (Machine-translation by Google Translate, not legally binding)