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Link 2 has the form of a bent lever and turns about fixed axis A. Link 2 is connected by sliding pairs to sliders 3 and 4 which move along its arms Aa and Ab. Slider 3 is connected by turning pair B to slider 1 which moves along fixed guides p-p. Cross- piece Bd of slider 3 is connected by a sliding pair to X-shaped slider 4 which has guides with axes making the angle 90°-α with each other, where α is angle CAB. When link 2 turns about axis A, point C, at the intersection of guides Bd and Ab, describes straight line q-q which is perpendicular to line Ax. Line Ax makes the angle 90°-α with axis c-c of guides p-p. The distance A͞D equals A͞D=A͞E/cos(α) where A͞E is the distance from point A to axis c-c of guides p-p. $1364$LG,GI$

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