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US Patent: 193,632
Charles H. Amidon - Millers Falls, MA

USPTO Classifications:
81/184, 81/73

Tool Categories:
wrenches : brace wrenches

E. R. Saxton - Buffalo, NY
Charles H. Amidon - Millers Falls, MA

Saxton and Amidon - Buffalo, NY

Francis Park
James S. Grinnell

Patent Dates:
Applied: May 14, 1877
Granted: Jul. 31, 1877

Patent Pictures: [ 1 | 2 ]
Charles H. Amidon Patent July 31, 1877
USPTO pdf tiff
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The patent is for the movable jaws, and the right - and left-hand screw that adjusts them. This arrangement keeps the center of the jaw opening in line with the center of the brace pad.

The markings on one well-preserved example read, "AMIDON'S PAT // JULY 1, 1878 MFTGD // BY SAXTON & AMIDON // BUFFALO N.Y." The date in the marking is wrong.

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