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US Patent: 651,574
John Edward Meredith - Birmingham, England

USPTO Classifications:
81/124.3, 81/125.1, 81/98, D8/22, D8/25, D8/28

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


J. E. Meredith - Birmingham, England

E. B. Bolton
Charles Bosworth Ketley
Herbert Whitehouse

Patent Dates:
Applied: Nov. 07, 1898
Granted: Jun. 12, 1900

Patent Pictures: [ 1 | 2 ]
John Edward Meredith patent June 12, 1900
USPTO pdf tiff
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"Self-Adjusting" hex box end with swinging loop ends fitting several hex sizes. The "loops" are made from folded stampings, and fold back against the shank when not in use.

Known examples marked "COMPETENT JEM / MEREDITH'S Pat." and a model number.

The British (GB-189818451 ) and Canadian (no. CA-62,666 issued February 16, 1899) patents have also been identified.

The idea of a self-adjusting hex box wrench was revisited a couple of decades later in James W. Saffold's patent no. 1,363,274.

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