Coes Wrench Company

Coes Wrench Company was a historical American tool manufacturer based in Worcester, Massachusetts. The company was established on April 1, 1888, and was associated with the production of the screw-type wrench developed by Loring Coes. That tool became widely known as a monkey wrench and distinguished itself from earlier wrench designs because its jaw could be adjusted with one hand. The company’s origins trace back to the Coes brothers, Loring Coes and Aury Gates Coes, who had worked for Kimball and Fuller, a machinery maker serving the woolen industry. In 1836, the brothers acquired that business and organized it as L. & A. G. Coes. Their original facility was destroyed by fire in October 1839, forcing them to leave the business and move to Springfield, Massachusetts, where they worked as pattern makers at the foundry of Laurin Trask. During their Springfield period, Loring Coes developed the screw wrench. Earlier commonly used designs, including the English patent wrench and the Merrick or Springfield wrench, required two hands for adjustment. The Coes design used a screw mechanism that allowed the jaws to be set with one hand, giving it a practical advantage for mechanics and other users. To finance the patent, the brothers sold the pattern for spinning machines that they had recovered from the earlier fire. Loring Coes received the wrench patent on April 16, 1841. After obtaining the patent, L. & A. G. Coes resumed operations and began manufacturing the new wrench. The wrench became the company’s defining product and the basis of the Coes name in the tool market. In 1888, the Coes Wrench Company was merged with Loring Coes & Company. The available historical material does not establish a complete later corporate history, ownership chronology, product catalog, or operating end date. It is therefore best understood as a defunct historical tool company rather than a currently operating international brand.

The history of Coes Wrench Company is rooted in the nineteenth-century mechanical and toolmaking activities of the Coes brothers. Loring Coes and his brother Aury Gates Coes first worked for Kimball and Fuller, a firm involved in machinery for the woolen industry. In 1836, they purchased that operation and formed L. & A. G. Coes as a partnership. The early business suffered a major setback in October 1839, when its facility was destroyed by fire. The brothers were unable to continue operating at that location and moved to Springfield, Massachusetts. There they worked as pattern makers in the foundry of Laurin Trask. Their Springfield work proved decisive for the future of the Coes name: Loring Coes invented a screw-adjustable wrench intended to improve on the principal wrench designs then in common use. The earlier English patent wrench and the Merrick wrench, also called the Springfield wrench, required both hands to make an adjustment. Loring Coes’s design used a screw mechanism that allowed the jaws to be adjusted with one hand. This made the wrench more convenient for practical work and became the central technical distinction associated with the Coes product. The brothers financed the patent by selling the pattern for spinning machines that they had salvaged from the fire-damaged business. Loring Coes was granted a patent for the screw wrench on April 16, 1841. Following the patent grant, L. & A. G. Coes resumed business and began manufacturing the new wrench. Over time, the screw wrench became commonly identified as a monkey wrench and served as the company’s signature product. Coes Wrench Company was founded on April 1, 1888. The available account places the company within the broader succession of Coes toolmaking enterprises and records that it merged with Loring Coes & Company in 1888. The source material does not provide a detailed account of the merged company’s later management, factories, product expansion, sales territories, or closure. It also does not identify a current successor owner or operating entity. Consequently, the company’s historical importance rests principally on the development and manufacture of the screw-type wrench rather than on a documented modern corporate structure.

1. 1888Coes Wrench Company founded and merged

   Coes Wrench Company was founded on April 1, and the historical account records its merger with Loring Coes & Company during the same year.

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2. 1841Loring Coes receives screw-wrench patent

   On April 16, Loring Coes was granted the patent for the screw-adjustable wrench that became the company’s defining product.

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3. 1839Original facility destroyed by fire

   A fire destroyed the brothers’ facility in October, after which they moved to Springfield, Massachusetts, and worked as pattern makers.

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4. 1836Coes brothers establish L. & A. G. Coes

   Loring Coes and Aury Gates Coes acquired the machinery business where they had worked and organized it as L. & A. G. Coes.

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A historical American hand-tool maker distinguished by the patented screw-adjustment mechanism of its wrench, which enabled one-handed adjustment.

• Coes screw wrenchAdjustable hand tool1841

  The company’s characteristic product was a screw-type adjustable wrench invented by Loring Coes. Its screw mechanism allowed the jaws to be adjusted with one hand, unlike earlier English patent and Merrick or Springfield wrench designs that required two hands. The tool became commonly known as a monkey wrench and formed the core of the Coes manufacturing identity.

• Monkey wrenchAdjustable hand tool1841

  Monkey wrench is the commonly used name associated with the Coes screw wrench. The design provided an adjustable jaw operated through a screw mechanism and was intended for practical mechanical work. The available source identifies this wrench as the principal product associated with Coes Wrench Company.

• 1888Merger with Loring Coes & CompanyM&A

  The company’s historical account records a corporate combination with Loring Coes & Company in 1888, the same year Coes Wrench Company was founded.

  What changed. Coes Wrench Company was merged with Loring Coes & Company.

  Aftermath. The available reference does not document the subsequent ownership structure, management, brand treatment, or operating history after the merger.

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1. Coes Wrench Company