US Patent: 1,634,908


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Wrench

Patentees:

Earnest E. Lynch (exact or similar names) - Turlock, CA

Homer A. Mead (exact or similar names) - Turlock, CA

USPTO Classifications:

81/99

Tool Categories:

wrenches : nut wrenches

wrenches : wrench adjustment types : self-adjust wrenches

wrenches : wrench components : wrench jaw components

Assignees:

Masterench Corporation - Turlock, CA

Manufacturer:

Masterench Corporation - Turlock, CA

Witnesses:

Unknown

Patent Dates:
Applied:	Mar. 03, 1924
Granted:	Jul. 05, 1927

Patent Pictures:

Earnest E. Lynch & Homer A. Mead patent July 5, 1927

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Description:

The movable jaw of the self-adjusting wrench is shaped so the the wrench will contact four sides of a hexagonal nut for all the sizes within its range. If the jaw surfaces have teeth, the wrench will turn pipe or other round objects. A spring holds the jaw in the closed position.

This is the 2nd of several patents for successive iterations of the MASTERENCH. See also 1,533,602, 1,735,257, 1,885,616} and 2,028,406.