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US Patent: 825,401
Wrench
Patentee:
John Merckens - Chicago, IL

USPTO Classifications:
7/138, 81/120, 81/177.1, 81/186

Tool Categories:
wrenches : alligator wrenches
combination tools
wrenches : wrench combination tools

Assignees:
Edmonds Metzel Mfg. Co. - Chicago, IL

Manufacturer:
Edmonds Metzel Mfg. Co. - Chicago, IL

Witnesses:
William R. Rummler
A. E. Metzel
Glen C. Stephens
Rudow Rummler

Patent Dates:
Applied: Dec. 05, 1904
Granted: Jul. 10, 1906

Patent Pictures: [ 1 | 2 ]
John Merckens Pat. July 10, 1906
USPTO pdf tiff
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Description:
The patent is for the laminated construction whereby the gripping parts of tempered steel are reinforced by tougher less brittle material. The thread cutters are a separate patent. (No. 828,859)

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