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.[1]
In 1994, the last workers vacated. The building was demolished in 1996.
Gallery
- Early 8" adjustable wrench manufactured by the Diamond Calk Horseshoe Company
- Early 8" adjustable wrench manufactured by the Diamond Calk Horseshoe Company: opposite side showing manufacturers marks
- Diamond Calk Horseshoe CO. 8in adjustable wrench
References
- ^ Norton, Maryanne C.; Aubut, Sheldon T. (2001-07-30). "Diamond Calk Horseshoe Company". Duluth, Minnesota. Arcadia Publishing. p. 54. ISBN 0-7385-1891-3.
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