US Patent: 76,519
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| Improvement inWrenches
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Patentee:
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| A. S. Petrie (exact or similar names) - Hudson City, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 07, 1868 |
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Patent Pictures:
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A. S. Petrie Pat. April 7, 1868 |
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Stan Schulz
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Description: |
| The movable jaw includes a sliding key with oblique ribs that meshes with transverse oblique grooves or ribs on the wrench shank. A pin or screw in the key limits its range of motion and holds in in the jaw. |
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