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US Patent: 1,792,338
Adjustable Wrench
Patentee:
Frederick Walz - Burnside, CT

USPTO Classifications:
81/145

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
none listed

Patent Dates:
Applied: Mar. 16, 1928
Granted: Feb. 10, 1931

Patent Pictures:
Frederick Walz patent February 10, 1931
USPTO pdf tiff
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Description:
A spring pulls the movable jaw "closed," a locking latch with fine teeth engages fine rack teeth on the movable jaw. A small lever with a"push button" end is used to retract the locking latch. The structure is designed to allow "ratcheting" action of the jaw.

A known example is marked WALZ PAT PENDING.

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