Link 3, designed as a complex lever, turns about fixed axis B and is connected by turning pairs C, G and H to link 4 and to pulleys 2 and 5, of equal diameter. Flexible link 7 runs over the pulleys and is connected by turning pair F to link 6. Link 1, designed as a bent lever, turns about fixed axis A and is connected by turning pairs D and E to links 4 and 6. When link 1 turns about axis A, links 4 and 6 have complex motions and link 3 oscillates about axis B.
$2041$FL,Sa$