US Patent: 558,304
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| Wrench
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Patentee:
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| John McCarthy Palmer (exact or similar names) - Marysville, MT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 26, 1895 |
| Granted: |
Apr. 14, 1896 |
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Patent Pictures:
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John McCarthy Palmer patent April 14, 1896 |
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Stan Schulz
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Description: |
| The spring-loaded pivoting block holding the adjusting nut in this pipe wrench is way too elaborate to be practical. The front and back faces of the block are concentric.
Ken Cope's "American Wrench Makers 1830-1930" cites an 1897 POWER item that implies Palmer intended to produce tools based on this patent along with nos. 561,274 and 574,624. |
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