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US Patent: 227,768
Pipe-Wrench
Patentee:
Griffith W. Griffiths - Tecumseh, MI

USPTO Classifications:
81/120, 81/180.1, D8/21

Tool Categories:
wrenches : alligator wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Willis Merritt
Wm. R. Wooden
Jas. M. Madigan
W. C. McArthur

Patent Dates:
Applied: Apr. 05, 1880
Granted: May 18, 1880

Patent Pictures:
Griffith W. Griffiths patent May 18, 1880
USPTO pdf tiff
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Description:
The patent is for the "V" shaped jaw opening together with the teeth-bearing side plates. The specifications claim the spread teeth are less likely to jam or fill with dirt than teeth running the full width of the jaw, and the side plates can be replaced if worn or broken.

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