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US Patent: 52,968
Improvement In Wrenches
Patentee:
Aury Gates Coes - Worcester, MA

USPTO Classifications:
81/171

Tool Categories:
wrenches : nut wrenches

Assignees:
None

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

Witnesses:
Thomas H. Dodge
H. L. Fuller
Patent Dates:
Granted: Mar. 06, 1866

Reissue Information:
Reissued as RE3,350 (Mar. 30, 1869)

Patent Pictures: [ 1 | 2 ]
A.G. Coes Pat. Mar. 6, 1866
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Description:
The shank of a monkey wrench has a "notch" to help support the "back strain" of the adjusting screw against a two-part ferule and handle.

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