Crank 1 rotates about fixed axis A and is connected by turning pair B to connecting rod 2 which, in turn, is connected by turning pair C to lever 3. Lever 3 rolls and slides with its cam surface along fixed link 4 whose cam surface is along a circular arc of radius r. Lever 3 is connected by turning pair D to link 5 which slides in fixed guides p-p. When crank 1 rotates about axis A, link 5 reciprocates in guides p-p. Spring 6 holds lever 3 in contact with the cam surface of link 4. The law of motion of link 5 depends upon the profile chosen for the cam surface of lever 3.
$1720$LC,RL$