Link 1, designed as a bent lever, turns about fixed axis A and is connected by turning pairs C and D to pulleys 2 and 3, of equal diameter. Flexible link 7 runs over the pulleys and is connected by turning pairs E and F to links 4 and 6. Links 4 and 5 turn about fixed axis B. Link 5 is connected by turning pair G to link 6. When link 1 turns about axis A, link 6 has a complex motion and links 4 and 5 oscillate about axis B.
$2028$FL,Sa$