Link 1, designed as a complex lever, turns about fixed axis A and is connected by turning pairs C, D and E to pulleys 4 and 3, of equal diameter, and to link 5. Flexible link 7 runs over the pulleys and is connected by turning pairs G and H to links 6 and 2. Link 2 turns about fixed axis B. Links 6 and 5 are connected together by turning pair F. When link 1 turns about axis A, links 5 and 6 have complex motions and link 2 oscillates about axis B.
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