Cross-shaped slider 1, with guides perpendicular to each other, moves along fixed guides p-p and is connected by turning pair C to link 7. Link 7 moves in cross-shaped slider 6 which has guides perpendicular to each other. Link 3 has the form of a bent lever. Arm Bd of link 3 moves in slider 4 which turns about fixed axis A. Arm Bf of link 3 moves in slider 6 and in slider 2 which turns about fixed axis 0. Link 5 is connected by turning pair B to link 3 and moves in slider 1 . When slider 1 moves along guides p-p, point D describes oblique double folium q-q with the equation ρD=0͞D= a*cos³(ϕ)+b*sin(ϕ)cos²(ϕ) or (x²+y²)²=x²(ax+by) where a and b = constant dimensions of the mechanism ϕ = polar angle between vector ρD and polar axis 0x.
$1173$LG,Ge$