US Patent: 24,190


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US Patent: 24,190

Wrench

Patentee:

John W. Brewster (exact or similar names) - Stamford, NY

USPTO Classifications:

81/152, 81/177.1

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

wrenches : nut wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

John O. Brewster

G. W. Gardner

Patent Dates:
Granted:	May 31, 1859

Patent Pictures:

John W. Brewster patent May 31, 1859

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Description:

The wrench shank is six-sided; the sliding movable jaw has a slightly oblique hole, so that as pressure is applied to the jaw face, the sides of the hole bind against the sides of the wrench shank. A retaining pin keeps the jaw from sliding off the shank.