Link 2, designed as a bent lever, is connected by turning pairs C, D and E to pulleys 5 and 5, of equal diameter, and to link 3 which turns about fixed axis B. Flexible link 7 runs over the pulleys and is connected by turning pair F to link 4 which turns about axis B. Link 1 turns about fixed axis A and is connected by turning pair C to link 2. When link 1 turns about axis A, link 2 has a complex motion and links 3 and 4 oscillate about axis B.
$2067$FL,Sa$