Abstract: A cutting tool comprising a movable blade having a ratchet wheel portion, a movable handle reciprocally movable to cause a drive pawl in engagement with the wheel portion to intermittently drive the movable blade in a cutting direction, and a retaining pawl in engagement with the wheel portion to prevent the movable blade from turning in a direction opposite to the cutting direction under the action of an elastic pulling member during the turn of the movable handle. After a workpiece supported on a receiving portion of a stationary handle has been cut, the movable handle is turned in the opposite direction slightly beyond the range of its cutting movement to disengage the pawls from the ratchet wheel portion and cause the elastic pulling member to return the movable blade to its fully opened position.

Abstract: A cutting hand tool comprising a receiving jaw for supporting a workpiece in a stable position, a cutting jaw opposed to the receiving jaw and a movable handle for intermittently forcing the cutting jaw into the workpiece through ratchet means. When cutting the workpiece, the cutting jaw in its fully opened position is quickly turned into contact with the workpiece by the movement of the movable handle elastically delivered to the cutting jaw, without resorting to the action of the ratchet means.

Abstract: A stripper for stripping covering from covered wire comprising a cutter head including a front plate formed with at least one inserting bore for passing the covered wire; a pair of cutter members having cutter edges behind the inserting bore and arranged in the cutter head symmetrically on the opposite sides of the covered wire to be inserted therein, the pair of cutter members being pivotally movable and openable from aligned position toward the direction of insertion of the wire; and a spring member retained on and interconnecting the pair of cutter members to render the cutter members pivotally movable along paths symmetrical with respect to the wire and to urge the cutter members in closing direction when they are moved pivotally backward in the closing direction.