The lengths of the links comply with the conditions: 0͞C=a and 0͞A=A͞B=a²/2b, where b is an arbitrary constant. Link 1 rotates about fixed axis 0. Link 1 is connected by turning pair C to slider 5 and by a sliding pair to slider 3. Link 4, turning about fixed axis A, is connected by turning pair B to slider 3. Slider 5 moves along the cross-piece of slider 6 which moves along fixed guides p-p whose axis is parallel to axis Ox. Link 7 is connected by turning pair B to slider 3 and by a sliding pair to cross-shaped slider 2 which has guides perpendicular to each other. Slider 2 moves along the cross-piece of slider 6. When link 1 rotates about axis 0, point D of slider 2 describes lemniscate of Sluze q-q with the equation (a²-x²)x²=b²y².
$1168$LG,Ge$