Link 6, designed as a bent lever, is connected by turning pairs F, G and H to pulleys 2 and 5, of equal diameter, and to link 1. Flexible link 7 runs over the pulleys and is connected by turning pair E to link 3. Links 1 and 3, designed as bent levers, turn about fixed axes A and B and are connected by turning pairs D and C to link 4. When link 1 turns about axis A, links 4 and 6 have complex motions and link 3 oscillates about axis B.
$2037$FL,Sa$