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US Patent: 603,530
Wrench
Patentee:
Edwin Henwood - Hermansville, MI

USPTO Classifications:
81/150, 81/92

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. Fred Acker
Johnse Bergstrom
William H. Daniels
Edwin P. Radford

Patent Dates:
Applied: Jul. 07, 1897
Granted: May 03, 1898

Patent Pictures:
Edwin Henwood patent May 3, 1898
USPTO pdf tiff
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Description:
The adjustment means is a cam lever in the movable jaw that combines with an internal ridge on the opposite internal side of the movable jaw to form a pinch hold on the main shank.

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