(under subclass 452) Device comprising, in addition to the
actuating means, structure which either tends to promote and maintain parallelism or other definite angular relationship of the jaws, or which permits at least one jaw to adjust itself in position as it engages the work.
(1) Note. The equalizer means must be distinct from the actuating means. Example: A torsion rod with rack-and-pinion connections to both ends of the clamp bar.
(2) Note. A mere pivotal mounting of a clamp jaw, if it is intended to permit self-alignment, is included.
