Link 1, designed as a complex lever, turns about fixed axis A and is connected by turning pairs B, C and E to pulley 5 and to links 2 and 4. Flexible link 7 runs over pulleys 5 and 6, of equal diameter, and is connected by turning pair H to link 8. Pulley 6 is rigidly attached to the base. Link 3, designed as a bent lever, is connected by turning pairs D, F and G to links 2, 4 and 8. When link 1 turns about axis A, links 2, 3, 4 and 8 have complex motions.
$2040$FL,Sa$