US Patent: 1,466,136
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| Wrench
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Patentee:
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| Edward Matthews (exact or similar names) - Denver, CO |
| USPTO Classifications: |
| 81/98 |
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Patent Dates:
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| Applied: |
Apr. 13, 1922 |
| Granted: |
Aug. 28, 1923 |
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Patent Pictures:
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Edward Matthews Pat. Aug. 28, 1923 |
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Stan Schulz
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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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