Adjustable locking hand tool

A locking hand tool having an adjustable jaw and an opposing movable infinitesimally adjustable jaw having a sliding end, a fixed handle and a movable handle and lever-locking means therebetween for establishing and maintaining a toggle relation between the jaws when in a closed position, an extension bar at a fixed angle to the fixed handle, means for supporting and moving the movable jaw along the extension bar,

• said supporting and moving means comprising a channeled supporting means holding said sliding end of the movable jaw to one face of the extension bar and holding a spacer member to the opposite face of the extension bar,
• said one face of the extension bar being smooth and said opposite face of the extension bar also being smooth,
• said sliding end of the movable jaw having an arcuate protuberance which causes the sliding end to alternate from a locked position to an unlocked position as the movable jaw slides or is slid to any point along the extension bar, and wherein the arcuate protuberance is at the outer corner of the sliding end of the movable jaw,
• whereby the combination of the arcuate protuberance, the spacer, and the distance between them provides the friction to cause the movable jaw to lock in place along the extension bar.