Synthesis of two angular position follower with no Quick Return I

Observe the two boundary positions of the mechanism. Position 1, on the left, is indicated in green and position 2 is marked in red.

You can change some parameters: -Move the Point A and observe the limit positions -Move the Point O2 to change the length of L3 -Move the Point O4 to change the lenght of the rocker L4 -Move the Point B1 or B2 to change the angle of the rocker