US Patent: 159,420
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| Pipe And Nut Wrench
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Patentee:
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| Friedrich Kohler (exact or similar names) - Allegheny, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 04, 1874 |
| Granted: |
Feb. 02, 1875 |
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Patent Pictures:
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Friedrich Kohler Pat. February 2, 1875 |
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Stan Schulz
Pat No. 159,420 patent model (Hagley Museum)
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Description: |
| The wrench has a "conventional" self-adjusting feature with a reversible jaw element with flat and curved toothed jaw faces. The sharp edge of the curved jaw will mate with the flat "corner" of the opposing jaw to provide a nail-pulling grip.
The patent model is in the collection at the Hagley Museum (Wilmington, DE). |
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