Slotted lever 1 rotates about fixed axis A. Slider 3 moves along radial slot a of lever 1 and is connected by turning pair B to circular planet gear 2 which meshes with noncircular fixed sun gear 5. When slotted lever 1 rotates, gear 2 rotates about axes B and A and slides with slider 3 along slot a of lever 1. Gear 2 is held in engagement with gear 5 by spiring 4.
$2411$LrG,4L$