Input: pink crank.

Middle point of blue slider draws intersection (violet parabola) of yellow cone and a plane.

The plane is parallel to the green generatrix of the cone. The plane is created by axis of sliding joint of green link when it turns.

Axis of the cone and rotary axis of the pink crank are in line.

Axis of revolute joint between the blue slider and orange part contains middle point of the blue slider and is parallel to rotary axis of the pink crank.