Link 1 slides in fixed guide b and has slot d whose axis is perpendicular to that of guide b. Link 2 slides in fixed guide c and has slot f whose axis is perpendicular to that of guide c. Link 5 is connected by turning pairs A and B to sliders 3 and 4 which move along slots d an f of links 1 and 2. The value of one of the factors, x, is set up by displacing slider 3 with respect to slotted link 1. The value of the second factor, y, is set up by displacing slot f of link 2 the corresponding distance from a certain fixed point C. If slot d of link 1 is set at the arbitrary distance a from point C of link 5, then slider 4 is displaced the distance z from the axes of guides b and c equal to z=xy/a.
$1269$LG,MO$