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US Patent: 512,709
Wrench
Patentee:
William G. Johnson (exact or similar names) - Kingfisher, OK

USPTO Classifications:
81/134

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. E. Hunt
Wm. N. Cromwell
C. M. Grable
W. B. Johnston
Patent Dates:
Applied: Apr. 21, 1893
Granted: Jan. 16, 1894

Patent Pictures:
William G. Johnson patent January 16, 1894
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Description:
The movable jaw has a pawl with a compression spring engaging a rack on the main shank.

The patent is from Oklahoma Territory.

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