The lengths of the links comply with the condition: 0͞D=r, where r is the radius of circle p-p which is to be converted into a curve of Sluze. Link 1, turning about fixed axis 0, is connected by turning pair D to cross-shaped slider 2 which has guides perpendicular to each other. Link 3, turning about axis 0, is connected by sliding pairs to sliders 4 and 5. Slider 5 is connected by turning pair B to slider 6 which moves along fixed guides t-t whose axis is parallel to axis 0y. Cross-piece Bf of slider 6 has its axis parallel to axis 0x and is connected by a sliding pair to slider 2. Link 7 is connected by turning pair C to slider 4 and by a sliding pair to slider 2. When link 1 turns about axis 0, point D of link 2 describes circle p-p, and point C of slider 4 describes curve of Sluze q-q with the equation x⁴+r²x²+a²y²=0 where a is a constant dimension of the mechanism.
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