Crank 1 rotates about fixed axis A. Roller B of crank 1 slides along circular guiding slot a-a of radius B͞C and with its centre at point C of link 2. When crank 1 rotates about axis A, slotted link 2 reciprocates in fixed guides. The mechanism is equivalent to slider-crank linkage ABC in which AB is the crank, BC is the connecting rod and link 2 is the slider.
$1476$SC,3L$