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US Patent: 592,666
Monkey Wrench
Patentee:
Eben B. Sankey - Salem, MO

USPTO Classifications:
81/138, 81/148

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. M. Poynton
Jos. C. Stack
Julia E. Sankey
Ruth V. Sankey

Patent Dates:
Applied: Mar. 01, 1897
Granted: Oct. 26, 1897

Patent Pictures:
Eben B. Sankey patent October 26, 1897
USPTO pdf tiff
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Description:
The adjustment is held by rack teeth on the movable jaw that engage rack teeth on the inner edge of part of the handle structure. In one version the adjustment is held by a sliding wedge. In a second version, the adjustment is held by a short strut hinged to the end of the rack teeth on the movable jaw.

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