Slider 1 moves along fixed guides p-p whose axis is parallel to axis Ax. Slider 1 is connected by a sliding pair to link 5. Link 5 is connected by turning pair B to link 3 having the form of a bent lever with the angle nBm equal to α, where α is the angle between the coordinate axes Ax and Ay. Arm Bm of link 3 moves in slider 4 which is connected by turning pair D to slider 1. Arm Bn of link 3 moves in slider 2 which turns about fixed axis A. When slider 1 moves along guides p-p, point B describes parabola q-q with the equation fy²+2gx+2hy=0 where f=sin(α), g=-d/2=-p, h=-(e+2d*cos(α))/2, e = distance along Ay axis from axis Ax to the axis of guides p-p, p = distance from the focus of the parabola to its directrix.
$1105$LG,Ge$