Link 3, designed as a complex lever, turns about fixed axis B and is connected by turning pairs D, F and G to pulleys 4 and 2, of equal diameter, and to link 6. Flexible link 7 runs over the pulleys and is connected by turning pair E to link 1 which turns about fixed axis A. Link 5 turns about fixed axis C and is connected by turning pair H to link 6. When link 1 turns about axis A, link 6 has a complex motion and links 3 and 5 oscillate about axes B and C.
$2054$FL,Sa$