Pulleys 1 and 2 are of equal diameter. Pulley 1 rotates about fixed axis A and, through flexible link 7, rotates dpulley 2 about fixed axis B. Link 3 turns about fixed axis C an is connected by turning pairs D to links 4 and 5. Link 4 is connected by turning pair F to flexible link 7. Link 5 is connected by turning pair E to link 6 which turns about axis B. When pulley 1 rotates about axis A, links 4 and 5 have complex motions and links 3 and 6 oscillate about axes C and B.
$1904$FL,ML$