Pink bar length: 55
Blue bar length: 100
Green bar length: 100 + 100. Its angle: 93 deg.
Yellow bar length: 190
Orange bar length: 90
Input: pink bar rotating regularly
Output: orange bar. 1 input revolution makes the output oscillate one time, slow turning down, fast turning up.
Green line is locus of center of the revolution joint between green and yellow bars.
The mechanism can be used for converting the oscillation of the orange bar into the continuous rotation of the pink bar (input is orange bar).