In 1924, another blacksmith, Danish immigrant William Petersen of DeWitt, Nebraska, invented the first locking pliers[4] and named them Vise-Grips.[5] In 1934, Petersen formed the Petersen Manufacturing Company to produce them.[6] In 1957, Petersen added an easy-release trigger to the design, creating the modern locking pliers design.[7]
In 1985, American Tool Companies bought out Petersen Manufacturing.[clarification needed] In 1993, American acquired the Irwin Tool Company, and in 2002, Newell Rubbermaid acquired American. In 2003, the company officially changed its name to Irwin Industrial Tool Company.[8]
In 2008, Irwin announced the closing of its DeWitt, Nebraska plant, ending 80 years of American production for Vise-Grips, citing a necessity to move production to China "to keep the Vise-Grip name competitive."[9]
In 2010, Irwin closed the customer service office in Wilmington, OH and moved the customer service department to Huntersville, NC.
