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SLIDER-CRANK MECHANISM

Link 3 turns about fixed axis A. Link 7 is connected by turning pairs D and C to links 3 and 8. Link 8 is connected by turning pair E to plate 4 on which chain sprocket 1 is mounted. Weight G is suspended from point C. The tension of chain 2 is applied to sprocket 1 and is counterbalanced by weight G. When the tension of chain 2 is reduced, weight G reduces the distance a, turning lever 3 about ax…