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 4, designed as a bent lever, is connected by turning pairs E, D and F to flexible link 7 and to links 3 and 5. Link 3 turns about fixed axis C. Link 6 is connected by turning pairs G and H to link 5 and to flexible link 7. When pulley 1 rotates about axis A, links 4, 5 and 6 have complex motions and link 3 oscillates about axis C.
$1907$FL,ML$