Pulleys 1 and 6 are of equal diameter. Pulley 1 rotates about fixed axis A and, through flexible link 7, rotates pulley 6 about fixed axis B. Link 3 is connected by turning pairs F, G and H to links 2, 4 and 5 which, in turn, are connected by turning pairs C, D and E to flexible link 7. When pulley 1 rotates about axis A, and points C, D and E are all travelling along a straight portion of their path, links 2, 3, 4 and 5 have dwells with respect to flexible link 7. When any of the points E, D or C passes over to a circular portion of its path, links 2, 3, 4 and 5 turn with respect to flexible link 7.
$1924$FL,D$