Noncircular gear 1 rotates about fixed axis A and meshes with noncircular gear 2 which rotates about fixed axis B. Crank 4 of slider-crank linkage BCD is rigidly attached to gear 2 and is connected by turning pair C to connecting rod 5. Connecting rod 5 is connected by turning pair D to slider 3 which moves along fixed guide a-a. The pitch centrodes of gears 1 and 2 are designed so that when gear 1 rotates at uniform velocity, slider 3 reciprocates at uniform velocity in its forward and return strokes.
$2438$LrG,ML$