Knipex-werk C. Gustav Putsch Kg

Bernd Herrmann

Pliers

Pliers having two pliers legs that cross at a pivot bolt, of which pliers leg is fixed and the other is movable with respect thereto, wherein the pivot bolt is optionally fixable in a longitudinal slot in the fixed pliers leg by toothing engagement in order to set a mouth opening width, by means of engagement teeth formed on the longitudinal slot and one or more mating teeth formed on the pivot bolt. The toothing engagement is releasable by the pivot bolt being pressed down in a first direction of movement and subsequently the pliers legs being moved together, or by the pivot bolt automatically passing over one or more engagement teeth, wherein the pivot bolt moves in a second direction of movement on passing over an engagement tooth. A movement block is provided at least partially on one pliers leg and are effective for some of the engagement teeth, and the movement block comes into effect during a displacement of the pliers legs together, being effective for the second direction of movement of the pivot bolt.

A hand-operated ratchet cutter with a movable and a fixed handle, wherein the fixed handle forms a first fixed blade, and a movable blade is hinged to an upper end area of the fixed blade, for shearing interaction in a cutting plane with the fixed blade. The movable blade moves in a plane parallel to the cutting plane, and the fixed blade has a first flat side. A fixed jaw with a second flat side () facing the first flat side is formed that also extends up to the upper end area of the fixed blade. A passage slot for the movable blade adjusted to the thickness (d) is formed between the first and second flat side, so as to ensure the shearing interaction between the movable and fixed blade even under a load by having the jaw act as a supporting jaw.

Hand-operated ratchet cutter

The invention relates to a pair of pliers () with two pliers legs () crossing at a joint pin (), one () of which legs is movable and the other () is fixed, and with a spring () between the fixed leg () and the joint pin () acting in such a way as to support interlocking engagement of the joint pin (), wherein the pliers legs () form gripping portions () on one side of the joint pin () and a pliers mouth is formed on the other side of the joint pin (), wherein furthermore the joint pin (), through which a pivot axis (A) of the movable pliers leg at the same time extends, is adjustable in a longitudinal slot () of the fixed pliers leg (), and wherein the movable pliers leg () can be optionally fixed in relation to the fixed pliers leg () by means of interlocking engagement between the joint pin () and the longitudinal slot () that takes place in the direction of a plane defined by the pliers legs (). To design and develop a pair of pliers of the type in question in such a way that different handling characteristics are advantageously obtained, it is proposed that the joint pin () is released from the interlock merely by tensile loading of the movable pliers leg () transversely in relation to the longitudinal extent of the longitudinal slot ().

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Wuppertal, Germany

Bernd Herrmann