Throw a Wrench in the Works

By Kippen Miller
Updated on September 16, 2025
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courtesy of Dan and Deb Gaier
From top to bottom: Henry Hewet’s screw adjust wrench, patented June 27, 1840; George Taft’s double screw adjust wrench, patented May 25, 1858; and A double screw wrench from L. & A.G. Coes of Mass. patented August 16, 1853.

Wrenches are an integral part of everyone’s toolbox. But as anyone who’s worked on farm equipment can tell you, not just any wrench will work for any job. Over the years, manufacturers have developed wrenches of different sizes and shapes, for a wide variety of tasks. Each wrench has a unique purpose and its own story to tell.

The rise of wrenches

The earliest wrenches and tools came to the United States from Great Britain. However, by the mid-1800s, the Industrial Revolution was in full swing in America. With the advancement in machinery, mass production, and a plethora of new inventions, new tools and wrenches needed to be created to maintain and support these advancements.

Henry King of Springfield, Massachusetts, patented the first adjustable wrench in the U.S. in October of 1832. In the late 1800s, there was a constant stream of “improved” wrenches that offered quicker adjustments, with a variety of designs. Seemingly every town in America had a foundry or machine shop. Inventors could conceive an idea, build a prototype of their invention from wood or brass to prove the concept, and apply for a patent. They would then contract a shop to manufacture and distribute the wrenches.

Over time, companies developed and employed new materials to craft wrenches, starting with sand castings of malleable iron, eventually moving to cast steel, and finally to forged alloy steel. These improved materials were stronger, increasing the longevity of the tools, and allowing manufacturers to offer lifetime guarantees on their wrenches. Simultaneously, materials improved in fasteners – like nuts and bolts – which allowed them to change from square heads to hexagonal heads, and naturally, wrench configurations followed suit.

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