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Diamond Calk Horseshoe Company

American metalwork company, 1908 to 1981

The Diamond Calk Horseshoe Company of Duluth, Minnesota, USA was founded in 1908 by blacksmith Otto Swanstrom.

Initially manufacturing horseshoes with a special type of calk to improve the animals' foothold on slippery surfaces, the company successfully adapted to the development of motorised transport for the masses and produced a range of adjustable wrenches and pliers from the 1920s. The family-owned company was sold to the Triangle Corporation in 1981; Triangle itself was eventually sold to Cooper Tools.{{cite book |chapter-url=https://books.google.com/books?id=5WjVeFKVKTQC&q=Diamond+Calk+Horseshoe+Company&pg=PA54

In 1994, the last workers vacated. The building was demolished in 1996.

Gallery

Image:DiamondCalkHorseshoeCo8inchAdjSpanner-1.jpg|Early 8" adjustable wrench manufactured by the Diamond Calk Horseshoe Company Image:DiamondCalkHorseshoeCo8inchAdjSpanner-2.jpg|Early 8" adjustable wrench manufactured by the Diamond Calk Horseshoe Company: opposite side showing manufacturers marks File:Diamond Calk Horseshoe CO. 8in adjustable wrench.png|Diamond Calk Horseshoe CO. 8in adjustable wrench

References

Farris, Kyle. (May 1, 2014). "Progress in the making: Deaf community finds its place in Duluth".

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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