Link 1 is connected by a screw pair to link 5 which turns about fixed axis A. Lever 2 turns about fixed axis B. Link 5 passes with considerable clearance through a slot in the end of lever 2. Link (swivel pad) 4 is connected by turning pair E to lever 2. Workpiece 3 is clamped by link 4 when link 1 is turned (screwed on).
$203$SL,GC$