Pulleys 1 and 2 are of equal diameter. Pulley 1 rotates about fixed axis A and, through flexible link 7, rotates pulley 2 about fixed axis B. Link 3 is connected by turning pairs C and D to flexible link 7 and to link 4. Link 4, designed as a bent lever, turns about fixed axis E and is connected by turning pair G to link 5 which, in turn, is connected by turning pair H to link 6. Link 6 turns about fixed axis F. When pulley 1 rotates about axis A, links 3 and 5 have complex motions and links 4 and 6 oscillate about axes E and F.
$1909$FL,ML$