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History of the Locking Pliers

In 1921 a Danish blacksmith, William Petersen, realized that his smithy job would be made easier if he could combine the convenience of pliers with the holding power of a vise. Being an inventor of sorts, Petersen came up with the idea of a pliers that could be locked by turning a small knob at its heel, giving the user more leverage and torque . . .Learn more...