US Patent: 562,878
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| Pipe Wrench
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Patentee:
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| Edward Wright (exact or similar names) - Worcester, MA |
| USPTO Classifications: |
| 81/93 |
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Patent Dates:
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| Applied: |
Jan. 10, 1896 |
| Granted: |
Jun. 30, 1896 |
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Patent Pictures:
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1 | 2
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Edward Wright patent June 30, 1896 |
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Stan Schulz
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Description: |
| The movable jaw has a rocking section with a spring holding the gripping surface out from the shank. The arrangement allows for sufficient movement for the jaws to grip pipe, without proceeding so far as to crush the pipe.
Compare this to John C. Speirs' Dec. 26, 1899 patent no. 639,785. |
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