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US Patent: RE7,173
Wrenches
Patentees:
Robert Hall McCormick - Chicago, IL
William R. Baker - Chicago, IL

USPTO Classifications:
81/155, 81/174

Tool Categories:
wrenches : nut wrenches
wrenches : wrench adjustment types : screw adjust wrenches
wrenches : wrench components : wrench jaw components

Assignees:
Robert Hall McCormick - Chicago, IL

Manufacturer:
McCormick Manufacturing Co. - Chicago, IL

Witnesses:
William A. Skinkle
James H. Shields
John V.A. Hasbrook

Patent Dates:
Applied: May 13, 1876
Granted: Jun. 13, 1876

Reissue Information:
Reissue of 166,020 (Jul. 27, 1875)

Patent Pictures: [ 1 | 2 ]
McCormick and Baker Pat. Reissue June 13, 1876
USPTO pdf tiff
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Description:
The movable jaw has lips which slide over flanges on the shank. The adjusting nut also attaches the base of the movable jaw to the shank.

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