US Patent: 181,699 - Improvement in Wrenches


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US Patent: 181,699

Improvement in Wrenches

Patentee:

Thomas McDonough (exact or similar names) - Montclair, NJ

USPTO Classifications:

81/112, 81/77

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

None

Manufacturer:

Unknown

Witnesses:

Hugh Gallagher

N. O. Pillsbury

Patent Dates:
Applied:	Feb. 26, 1876
Granted:	Aug. 29, 1876

Patent Pictures:

Thomas McDonough Pat. August 29, 1876

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Description:

The patent is an expansion and improvement on McDonough's February 22, 1876 calipers and dividers patent (no. 173,802). This patent adds wrench jaws to the adjustment mechanism previously patented.

A known example has no legible markings.