US Patent: 114,505 - Improvement in Wrenches


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US Patent: 114,505

Improvement in Wrenches

Patentee:

Aury Gates Coes - Worcester, MA

USPTO Classifications:

81/171

Tool Categories:

wrenches : wrench components : wrench jaw components

Assignees:

None

Manufacturer:

A. G. Coes & Co. - Worcester, MA

Witnesses:

Charles H. Burleigh

A. E. Pierce

Patent Dates:
Granted:	May 02, 1871

Patent Pictures: [ 1 | 2 ]

A. G. Coes Pat. May 2, 1871

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Description:

The patent is for the enlarged counterbore of the threaded hole in the adjustable jaw, and the extra metal in the jaw surrounding the hole. This feature is to prevent the adjusting knurl from "sticking" when the wrench is opened to its widest adjustment.