Countless contraptions that revolutionized farming in the 19th and early 20th centuries have become contemporary curiosities or even mysteries. Here are six sent in by readers. Do you know what they ...
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.
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