Link 3, designed as a complex lever, is connected by turning pairs E, D, F and G to links 4 and 2 and to pulleys 5 and 6, of equal diameter. Flexible link 7 runs over the pulleys and is connected by turning pair H to link 1. Links 1, 4 and 2 turn about fixed axes A, B and C. When link 1 turns about axis A, link 3 has a complex motion and links 2 and 4 oscillate about axes C and B.
$2042$FL,Sa$