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| Thanks, John! |
The first time I saw these screw jacks they were forming the lower portion of the jackposts in an old farmhouse. The conversion was done well, and they had been there long enough that I thought they were just a decorative Victorian version of the familiar support column.
But they were just a common late 19th century utility screw jack. In 1864 Charles Valentine Carpenter established an iron foundry and blacksmith shop called the Illinois Iron & Bolt Company. The company later acquired the Star Manufacturing Company, which produced agricultural and other industrial machinery. These jacks on various sizes were part of the line. By 1912 Carpenter's two companies employed 2,000 people.
Star Manufacturing remained in Carpentersville Ill. until 1977.
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