US Patent: 556,834
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| Pipe Wrench
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Patentee:
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| Daniel Rupert Porter (exact or similar names) - Chelsea, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 26, 1895 |
| Granted: |
Mar. 24, 1896 |
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Patent Pictures:
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Daniel R. Porter patent March 24, 1896 |
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Stan Schulz
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Description: |
| A self-adjusting "alligator" pipe wrench, with a spring acting to close the jaws, and a double-pivot link connecting the main shank and movable jaw.
Corresponding Canadian patent no. CA-56,225 issued June 10, 1897 provides Porter's full name. |
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