Link 1 has the form of a bent lever with the angle f0b equal to 90°. Link 1 turns about fixed axis 0. Arm 0f of link 1 moves in slider 3 and arm 0b in slider 5. Slider 3 is connected by turning pair B to slider 4 which moves along fixed guides p-p whose axis t-t is parallel to axis 0y. Cross-piece BC of slider 4, is connected by turning pair C to link 7 which, in turn, is connected by turning pair D to slider 2. Slider 2 moves along cross- piece Ad of slider 6. Axis Ad is parallel to axis 0y. Sliders 5 and 6 are connected together by turning pair A. When link 1 turns about axis 0, point D of slider 2 describes parabola of Cramer q-q with the equation y=sqrt(ax)-sqrt(2ax-x²) where a is a constant dimension of the mechanism.
$1164$LG,Ge$