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US Patent: 567,945
Lock Jaw Wrench
Patentee:
Elmer L. Keith (exact or similar names) - Mount Vernon, IA

USPTO Classifications:
81/141, 81/322, 81/384, 81/391, 81/94

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. V. Herrick
C. G. Gould
John E. Kyle
Minard Lozier

Patent Dates:
Applied: Oct. 14, 1895
Granted: Sep. 15, 1896

Patent Pictures:
Elmer L. Keith patent September 15, 1896
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Description:
To set the adjustment, the shank of the movable jaw with rack teeth on the back is pressed by a cam lever against a rack toothed bar within the handle casing.

The cam lever handle latches by a spring catch at the end of the handle.

Improved by successor patent no. 587,974.

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