Bar mechanism for reversing rotation 4

Input: pink crank rotating regularly. Outputs: orange crank. Joint between the orange crank and blue bar is pin-slot. Lengths of glass bar: a Lengths of blue bar: a a Lengths of cranks : Three stationary bearings create an isosceles right triangle. Length of its hypotenus: 2a Blue curve is traced by center of the blue bar pin. It is nearly round. Orange curve is traced by center of the orange crank slot. Two curves are about coincident. Pink and orange cranks rotate in opposite directions. Transm