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US Patent: 1,466,136
Wrench
Patentee:
Edward Matthews - Denver, CO

USPTO Classifications:
81/98

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

Assignees:
None

Manufacturer:
Edward Matthews - Denver, CO

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 13, 1922
Granted: Aug. 28, 1923

Patent Pictures: [ 1 | 2 ]
Edward Matthews Pat. Aug. 28, 1923
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Description:
The specifications describe the wrench as self-adjusting, having ratchet action, and fitting a range of sizes of hex or square nuts. Although the wrenches bear Matthews' name, the actual manufacture is likely to have been contracted out. Several sizes are known; the larger sizes are differently proportioned. An 18 inch example has a round end suggesting a pipe could be slipped on for extra leverage.

Matthews' June 27, 1944 design patent (D138,173) is closely related, and was produced as the AUTO GRIP by the Cleveland Wrench Company.

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