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US Patent: 851,794
Punch, Pliers, &c.
William A. Bernard - New Haven, CT

USPTO Classifications:
7/134, 81/352, 81/424

Tool Categories:
punches : pliers

William Schollhorn Co. - New Haven, CT

Not known to have been produced

M. Olive Williams
John W. Bristol
Samuel H. Fisher

Patent Dates:
Applied: Feb. 10, 1906
Granted: Apr. 30, 1907

Patent Pictures:
William A. Bernard patent April 30, 1907
USPTO pdf tiff
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The patented features are the two-junction jaw which forms the die for the punch, the adjustable gauge for the punching portion, and the pivoting eyelet dies on the main jaws.

The specifications discuss these features in the context of inserting eyelets in window shades, where the sides of the pieces may not be parallel.

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