Pulleys 1 and 2 rotate about fixed axes A and B. Guide pulleys 3 rotate about fixed axes C. Identical pulleys 5 and 6 rotate about axes E and D of slide 4 which reciprocates in fixed guide F. Endless flexible link 7 runs over all eight pulleys. When pulley 1 rotates about axis A, all the other pulleys rotate about their axes, and slide 4 can travel in guide F with any kind of motion.
$3580$CFL,DF$