US Patent: 487,742
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| Nut or Pipe Wrench
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Patentee:
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| John P. Hunt (exact or similar names) - London, ON Canada |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 04, 1891 |
| Granted: |
Dec. 13, 1892 |
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Patent Pictures:
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John P. Hunt patent December 13, 1892 |
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Stan Schulz
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Description: |
| The pipe gripping surface is inset in the movable jaw and is lifted by a screw.
Also patented in Canada (Canadian patent no. 37,889). |
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