Artificial hand

An artificial hand comprising:

• a support rotatable about a first axis;
• a ring mounted on said support for rotation about a second axis constituting the axis of said ring and perpendicular to said first axis;
• a pair of hinge quadrangles each having a first limb pivotally connecting the said ring for rotation therewith, a second limb generally parallel to said first limb and having an end displaceable along said ring whereby extensions of said second limbs intersect at said second axis whereby said quadrangles virtually have a common pivot axis coinciding with said second axis, and a third limb articulated to said first and second limbs;
• respective clamping jaws pivotally mounted on the respective hinge quadrangles and tiltable relative thereto about a respective third axis generally transverse to a plane common to said first and second axes, said jaws being juxtaposed for engagement of objects therebetween and being displaced toward and away from one another by swinging movement of said second limbs toward and away from one another;
• and
• means for angularly displacing at least one of said jaws about the respective third axis relative to the respective hinge quadrangle and for relatively displacing said second limbs of said hinge quadrangles.