US Patent: 1,198,309
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| Wrench
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Patentee:
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| Allen C. Allan (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Aug. 12, 1914 |
| Granted: |
Sep. 12, 1916 |
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Patent Pictures:
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Allen C. Allan patent September 12, 1916 |
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Stan Schulz
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Description: |
| Quick-acting movable jaw adjustment mechanism; the specifications indicate the mechanism could be applied to various gripping tools. Produced as a nut wrench.
Known examples marked, "ALLAN SELF ADJUSTING WRENCH - PATENT PENDING / A. C. ALLAN & CO. - MORRIS, ILL"
The self-adjusting aspect of the wrench received further evolution in patent 1,306,794. |
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