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US Patent: 644,263
Wrench
Patentee:
Otto Stechhan - Indianapolis, IN

USPTO Classifications:
81/171

Tool Categories:
wrenches : wrench components : wrench handle components

Assignees:
Indianapolis Drop Forging Company - Indianapolis, IN

Manufacturer:
Not known to have been produced

Witnesses:
James A. Walsh
Chester Bradford
C. S. Frye
J. A. Walsh

Patent Dates:
Applied: Jan. 08, 1900
Granted: Feb. 27, 1900

Patent Pictures:
Otto Stechhan patent February 27, 1900
USPTO pdf tiff
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Description:
Conventional "monkey wrench;" the distinctive feature is the extended shank doubled back on itself to form the core of the handle, and the base for the adjusting screw.

Compare Franklin P. Bates patent no. 684,037; Bates was also associated with the Indianapolis Drop Forging Co.

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