Pulleys 1 and 3 are of equal diameter. Pulley 1 rotates about fixed axis A and, through flexible link 7, rotates pulley 3 about fixed axis B. Link 2, designed as a bent lever, turns about fixed axis C and is connected by turning pairs E and F to links 6 and 4. Link 4 is connected by turning pairs G to flexible link 7 and to link 5 which, in turn, is connected by turning pair D to link 6. When pulley 1 rotates about axis A, links 4, 5 and 6 have complex motions and link 2 oscillates about axis C.
$1903$FL,ML$