US Patent: RE3,918 - Improvement in Wrenches


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US Patent: RE3,918

Wrench
Improvement in Wrenches

Patentee:

George C. Taft (exact or similar names) - Worcester, MA

USPTO Classifications:

81/171

Tool Categories:

wrenches : wrench components : wrench handle components

wrenches : wrench components : wrench jaw components

wrenches : nut wrenches

Assignees:

Loring Coes - Worcester, MA

Manufacturer:

Not known to have been produced

Witnesses:

R. H. Eddy

J. R. Snow

Patent Dates:
Granted:	Apr. 12, 1870

Reissue Information:
Reissue of 88,230 (Mar. 23, 1869)
Reissued as RE4,902 (May 14, 1872)

Patent Pictures:

Loring Coes Reissue Pat. Apr. 12, 1870

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Description:

The patent includes a "jog-bar" feature, recessed sides of the wrench head to deal with shrinkage cracking, a pin attaching the ferule to the main bar, and the shape of the adjustable jaw in relation to the main bar.