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Plumber wrench

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History

The plumber wrench was invented in 1888 by the Swedish inventor named Johan Petter Johansson. It shares some principles with both the Stillson-pattern pipe wrench and the rigid pipe wrench, as well as various forms of adjustable pliers, such as the Vise Grip and "Channelock" tongue-and-groove plier.

Johansson's tool is used rather than a pair of tongs to separate or join pipes. It is not widely known in North America, but is common in Europe.

Johansson also improved the adjustable wrench, with a patent in 1891.

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