Proto Tools (Connecticut State) : The largest industrial hand tool company in the United States


( Proto Tools (formally Stanley Proto) is an American industrial hand tool company. Founded as Plomb, it is presently a division of Stanley Black & Decker. The company is credited with creating the first combination wrench in 1933.

Proto was founded in 1907 by Alphonse Plomb, Jacob Weninger, and Charles Williams as the Plomb Tool Company, a small blacksmith shop making chisels in Los Angeles. In 1933, Plomb released what is commonly credited as the first combination wrench.

Plomb acquired a number of companies during the 1940s, including Cragin Tool of Chicago, Illinois in 1940, P&C Tool of Oregon in 1941, Penens Tool of Cleveland, Ohio in 1942, and J.P. Danielson of Jamestown, New York in 1947. Penens Tool would produce tools under the Fleet and Challenger brand names after its acquisition.

In 1946, Plomb was sued by another tool manufacturer—Fayette R. Plumb, Inc., now a brand of Apex Tool Group—for trademark infringement. The company began manufacturing its tools with the Proto name, a portmanteau of "professional" and "tools," in 1948. In 1957, the company began operating as Pendleton Tool Industries.

In 1964, Proto was acquired by Ingersoll Rand, and in 1984, it was acquired by Stanley and became Stanley Proto Industrial Tools.

According to wikipedia

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