Abstract: The spring mechanism (12) of a one-hand actuated pliers consists of a spring (14) supported on both handles (2, 3), which is designed in such a way that the handles (2, 3) are separated at a distance from each other by rotating the handle (3) and wherein the movable handle (3) of the pliers can be moved by the spring to the widest open position of the jaws by rotating said handle (3), wherein a rotation support of the spring (14) is configured on one side of the handle (2) and the spring (14) rests on said side against a rotational stop (19) formed on the handle (2) when it is not actuated. When the movable handle (3) of the pliers is displaced to a closing position of the jaws in which a workpiece is gasped, the spring (14) is released from the rotational stop only if force is exerted when the cheeks of the jaws (5, 6) are grasping the workpiece.

Abstract: The present invention relates to a manually-operated ratchet cutter having a moveable and a fixed handle part, the fixed handle part forming a first fixed cutting edge which is developed substantially in the shape of a circular segment and a moveable cutting edge being articulated on an upper end region of the fixed cutting edge for scissor-like cooperation with the fixed cutting edge, the moveable cutting edge moving in a plane parallel to the first cutting edge and cooperating with the latter, and having a ratchet mechanism which comprises a blocking lever and an advance lever and engages in a toothing developed on the outer periphery of the moveable cutting edge. Furthermore, the blocking lever can be moved into a release position.

Abstract: A center-cutter with cutting jaws mounted swingably around bearing pins, the mounting being formed by means of straps connecting the cutting jaws in the back of the cutting-jaw region and of a tooth-space engagement connecting the two cutting jaws to each other. While retaining the known cross-over overlapping of a single piece formation of handles and pliers jaws, handles cross over without joint increasing the cutting output.

Abstract: The present invention relates to water-pump pliers having two plier handles which cross each other and are connected to each other by a pivot pin 7 whereby the handles form plier jaws above the region of crossing of the handles and grip sections below the region of crossing of the handles, and in which the first plier handle is adjustable in steps relative to the second plier handle to change the size of the plier jaws. The pivot pin is fitted and guided in a bore defined in the first plier handle and enters into form-locked engagement with the profiled flanks of a slot in the second plier handle, where the slot lies in the crossing region of the handles, and, in order to obtain a structural form which is simple to manufacture, favorable in operation and stable in use, the pivot pin is rendered incapable of turning with respect to the second plier handle.