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US Patent: 809,755
Henry Adalbert Smith - Elgin, IL
William Fred Frenk - Dundee, IL

USPTO Classifications:
408/231, 408/239R

Tool Categories:
wrenches : wrench combination tools

Henry Adalbert Smith - Elgin, IL
William Fred Frenk - Dundee, IL

Star Mfg. Co. - Carpentersville, IL

W. A. Schroeder
J. F. Fierke

Patent Dates:
Applied: Sep. 22, 1904
Granted: Jan. 09, 1906

Patent Pictures: [ 1 | 2 ]
Smith and Frenk pat. January 9, 1906, with ad for ELGIN EXTRA JAWS 25 cents.
USPTO pdf tiff
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The patent is a die holder attachment for the Elgin adjustable alligator wrench (Patent No. 584,019 -- June 8, 1897). The patent includes modifications to the handle portion of the wrench.

The slide in the die holder allows the wrench to be repositioned in 90 degree increments with relation to the die. Patent no. 1,062,047 describes the composite tool.

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