Link 1, turning about fixed axis A, is connected by sliding pairs to sliders 3 and 5. Slider 3 is connected by turning pair B to slider 4 which moves along fixed guides t-t. The axis of guides t-t makes the angle β=135° with axis Ax. Cross-piece Bb of slider 4 is connected by a sliding pair to cross-shaped slider 6 which has guides with axes perpendicular to each otner. Slider 2 moves along fixed guides q-q whose axis makes the angle α=45° with axis Ax. Cross-piece Ca of slider 2 moves in slider 6. The axes of guides t-t and q-q are perpendicular to each other. When link 1 turns about axis A, point D of slider 6, at the intersection of Bb and Ca, describes equilateral hyperbola p-p with the equation 2xy-mx-ny+mn=0 where m and n are constant dimensions of the mechanism.
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