US Patent: 367,596
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| Pipe Wrench
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Patentee:
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| John Clark (exact or similar names) - Brooklyn, NY |
| USPTO Classifications: |
| 81/68 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 21, 1887 |
| Granted: |
Aug. 02, 1887 |
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Patent Pictures:
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John Clark patent August 2, 1887 |
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Stan Schulz
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Description: |
| Chain pipe wrench with the chain passing through a forked bearing surface, and onto posts on a pivoted jaw. A sliding wedge between the pivoted jaw and gripping jaw tightens the grip. |
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