Pulleys 4 and 6 are of equal diameter, as are pulleys 2 and 5. Flexible link 1 runs over pulleys 4 and 6 and oscillates about fixed axis A. Flexible link 7 runs over pulleys 2 and 5 and oscillates about fixed axis B. Link 3, designed as a complex lever, is connected by turning pairs F, E, D and C to pulleys 6, 4, 2 and 5. When flexible link 1 turns about axis A, pulleys 6, 4, 2 and 5 roll along flexible links 1 and 7, imparting a complex motion to link 3.
$2015$FL,TC$