US Patent: 88,230 - Improvement in Wrench


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US Patent: 88,230

Improvement in Wrench

Patentee:

George C. Taft - Worcester, MA

USPTO Classifications:

81/171

Tool Categories:

wrenches : nut wrenches

Assignees:

Loring Coes - Worcester, MA

Manufacturer:

L. Coes & Co. - Worcester, MA

Coes Wrench Co. - Worcester, MA

Witnesses:

Thomas H. Dodge

D. L. Miller

Patent Dates:
Granted:	Mar. 23, 1869

Reissue Information:
Reissued as RE4,902 (May 14, 1872)

Patent Pictures:

Geo. C. Taft. Pat. March 23, 1869

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Description:

The patent addresses the shape of the head and shank of a monkey wrench in relation to strength and durability. The reverse jog bar noted in the patent is a prominent feature of Coes wrenches dating to the 3rd quarter of the 19th Century.