Pulleys 1 and 7 are of equal diameter. Pulley 1 rotates about fixed axis A and, through flexible link 2, rotates pulley 7 about fixed axis B. Link 3 turns about fixed axis C and is connected by turning pairs D to links 4 and 5. Link 5 is connected by turning pair E to link 6. Links 4 and 6 are connected by turning pairs F and G to flexible link 2. When pulley 1 rotates about axis A, links 4, 5 and 6 have complex motions and link 3 oscillates about axis C.
$1915$FL,ML$