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The first locking pliers, with the trade name Vise-Grip, were invented by William S. Petersen in De Witt, Nebraska, United States in 1924. [1] [2] Later, in 1955, in the United Kingdom, M K Mole and Son, a hand tool manufacturing company, under the managing direction of Thomas Coughtrie, began making nearly identical pliers.
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]
Mole branded Self-grip wrench locking pliers. Thomas Robb Coughtrie (25 November 1917 – 27 August 2008) was a chartered engineer from Motherwell, Lanarkshire, Scotland.. He was credited by The Times as the inventor of the self-grip Mole wrench [1] although this conflicts with other sources which show the invention of the Vise-Grip locking pliers [2] in Nebraska, United States, with an ...
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It is best known for its pliers—the company manufactures more than 75 types and sizes of pliers [1] —particularly its eponymous style of tongue-and-groove, slip-joint pliers. [2] Its pliers have distinctive sky-blue handle grips; the company has been using the same trademarked shade of blue since 1956. [3]
The materials used to make pliers consist mainly of steel alloys with additives such as vanadium or chromium, to improve strength and prevent corrosion. The metal handles of pliers are often fitted with grips of other materials to ensure better handling; grips are usually insulated and additionally protect against electric shock.
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- 1747 Olentangy River Rd, Columbus, OH · Directions · (614) 299-9425
