Link 1, rotating about fixed axis A, is connected by turning pair B to link 5. Link 5 moves in slider 4 which turns about fixed axis C. Straight slotted member b is rigidly secured to link 1. By means of screw a slider 3 can be clamped at various positions along the axis of slotted member b. This varies length A͞B of crank 1.
$963$LG,4L$