Nut 1 is connected by a screw pair to eye-bolt 6 which is connected by turning pair B with lever (clamp) 2. Lever 2 has slot b by means of which it slides along fixed pin A. Eye-bolt 6 slides freely along slot f of the fixed link (base). Spherical washer 5 fits loosely on eye-bolt 6 . Workpiece 3 is clamped by lever 2 when nut 1 is tightened. Spring 4 returns lever 2 to its initial position.
$192$SL,GC$