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US Patent: D138,173
Design For A Wrench
Auto Grip
Edward Matthews - Denver, CO

USPTO Classifications:
81/98, D8/23

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches


Cleveland Wrench Co. - Cleveland, OH

none listed

Patent Dates:
Applied: Aug. 11, 1943
Granted: Jun. 27, 1944

Patent Pictures: [ 1 | 2 | 3 ]
Edward Matthews design patent June 27, 1944
USPTO pdf tiff
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Self adjusting swinging hook-jaw wrench design. The Cleveland Wrench Co. Auto Grip markings include the patent number. The Matthews Wrench Co. Denver Colorado self-adjusting wrench may also be related to this design, along with Matthews' April 28, 1923 patent (no. 1,466,136).

D150,677 and D162,856 are later design patents spinning off from this one.

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