US Patent: 166,020


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US Patent: 166,020

Wrench

Patentees:

Robert Hall McCormick (exact or similar names) - Chicago, IL

William R. Baker (exact or similar names) - Chicago, IL

USPTO Classifications:

81/155, 81/174

Tool Categories:

wrenches : wrench components : wrench jaw components

wrenches : wrench adjustment types : screw adjust wrenches

wrenches : nut wrenches

Assignees:

Robert Hall McCormick - Chicago, IL

Manufacturer:

McCormick Harvester Co. - Chicago, IL

Witnesses:

Patent Dates:
Applied:	Apr. 13, 1875
Granted:	Jul. 27, 1875

Reissue Information:
Reissued as RE7,173 (Jun. 13, 1876)

Patent Pictures: [ 1 | 2 ]

R. H. McCormick & W. R. Baker patent July 27, 1875

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Description:

The movable jaw of this malleable iron wrench has lips which slide over flanges on the shank. The base of the movable jaw is attached to the shank by the adjusting nut. This design was used for an inexpensive adjustable wrench accompanying agricultural implements and other machinery. Most found have Sept. 75 & June 76 date marking reflecting reissue patent RE7,173.

See also patent nos. 140,111, 155,139 and 206,733 for other takes on this general form.