US Patent: 521,123
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| Wrench
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Patentee:
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| Archibald McCallum (exact or similar names) - Conrad, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 05, 1893 |
| Granted: |
Jun. 05, 1894 |
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Patent Pictures:
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Archibald McCallum patent June 5, 1894 |
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Stan Schulz
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Description: |
| Adjustable angle with provision for interchangeable heads for different size openings. The pin serving as the pivot for the head is held in place by movable cover. The spring-loaded latch pin can be turned to ratchet in either direction or to hold the head against movement. |
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