Flexible link 1 runs over pulleys 2 and 3, of equal diameter, and oscillates about fixed axis A. Link 5, designed as a bent lever, is connected by turning pairs F and G to pulleys 2 and 3 and by turning pair E to link 6. Link 7, designed as a bent lever, turns about fixed axis B and is connected by turning pairs C and D to links 4 and 6. Link 4 is connected by turning pair F to link 5. When flexible link 1 turns about axis A, links 4, 5 and 6 have complex motions and link 7 oscillates about axis B.
$1995$FL,TC$