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US Patent: 331,053
Wrench
Patentee:
Nathan H. Griffith (exact or similar names) - Providence, RI

USPTO Classifications:
279/39, 81/113, 81/185.1, 81/73

Tool Categories:

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Joseph J. Scholfield
Socrates Scholfield

Patent Dates:
Applied: Jul. 30, 1885
Granted: Nov. 24, 1885

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Description:
"My improvement is more especially designed as a carriage-wrench, and it may also be advantageously employed for holding a boring-bit or other tool; and it consists in the improved combination of a screw with the expanding jaws, and also in the combination therewith of a holding-shoe..."

In 2005 an example sold at auction for $1870. Keep in mind that prices will vary greatly with condition.

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