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US Patent: 618,026
Screw-Wrench
Patentee:
John H. Coes - Worcester, MA

USPTO Classifications:
81/171

Tool Categories:
wrenches : wrench components : wrench handle components

Assignees:
Coes Wrench Co. - Worcester, MA

Manufacturer:
Not known to have been produced

Witnesses:
George W. Gregory
Alex C. Proudfit
Fred S. Greenhof
Gustave G. Magnitzky

Patent Dates:
Applied: Oct. 29, 1898
Granted: Jan. 17, 1899

Patent Pictures:
John H. Coes patent January 17, 1899
USPTO pdf tiff
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Description:
The patent includes a heating and forging process to "upset" a portion of the wrench shank of a Coes wrench after the adustable jaw, adjusting screw, and ferule have been installed. The ferule and shank are designed so that the "upsetting" firmly secures the ferule to the shank.

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