Locking pliers

A locking pliers pliers, which - adjusted by a set screw on an opening width - can be clamped in a certain position on the workpiece. Other designations are locking pliers, clamping pliers and welding pliers.

Due to the toggle mechanism can be applied very high forces with this type of pliers. By the clamping effect is used up to a certain degree is not turning a blind the forceps, but only perform the desired movement. Can be solved a grip wrench by pressing a lever back, which in turn overcomes the " dead center " and the workpiece releases.

Applications are, for example, solving very solid screw, fixing of workpieces or use as a "third hand".

The locking pliers was patented in 1924 by Danish immigrant William Petersen in the U.S. and for decades under the brand name Vise Grip made ​​in DeWitt, Nebraska, and sold. In 2008, the plant was closed and moved production to China.