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 along the specially shaped fixed cam surface of link 4. 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. Spring 6 holds lever 3 in contact with the cam surface of link 4. The law of reciprocating motion of link 5 depends on the profiles chosen for the cam surfaces of link 4 and lever 3. Reciprocating motion is transmitted to link 5 by the rolling and sliding motion of the cam surface of lever 3 along the cam surface of fixed link 4.
$1713$LC,RL$