The handle with circular eccentric cam 1 turns about fixed axis A. Eccentric cam 1 slides along head f of link 2. Link 2 slides in fixed guide c. C-member 3 has pin b sliding along slot e in link 2. Lugs a of C-member 3 act on sides d of workpiece 5. When eccentric cam 1 is turned clockwise, pressure is transmitted through link 2 to C-member 3 which clamps workpiece 5. Springs 4 release workpiece 5 when eccentric cam 1 is turned in the opposite direction.
$224$SL,GC$