Link 1 turns about fixed axis A and is connected by turning pair C to pulley 6. Flexible link 5 runs over pulleys 6 and 2, of equal diameter, the latter being rigidly attached to the base. Link 3 is connected by turning pairs D and E to flexible link 5 and to link 4 which turns about fixed axis B. When link 1 turns about axis A, link 3 has a complex motion and link 4 oscillates about axis B.
$1880$FL,6L$