Link 1, designed as bent lever bAa, turns about fixed axis A, and its arm Aa moves in slider 2 and arm Ab in slider 5. Slider 2 is connected by turning pair D to slider 6 which moves along cross-piece d-d of slider 3. Slider 3 moves along fixed guides t-t whose axis is parallel to axis Ax. Slider 5 is connected by turning pair C to slider 4 which moves along fixed guides q-q. The axis of guides q-q makes the angle a with axis Ax. When link 1 turns about axis A, point D describes hyperbola p p with the equat ion x²+Bxy+2Ey=0 where B=-tan(α), E=n/2, n= constant dimension of the mechanism.
$1070$LG,Ge$