Link 1, designed as a complex lever, turns about fixed axis A and is connected by turning pairs C, D and E to pulleys 3 and 2, of equal diameter, and to link 5. Flexible link 7 runs over the pulleys and is connected by turning pair H to link 4. Link 4, designed as a bent lever, turns about fixed axis B and is connected by turning pair G to link 6 which, in turn, is connected by turning pair F to link 5. When link 1 turns about axis A, links 5 and 6 have complex motions and link 4 oscillates about axis B.
$2045$FL,Sa$