US Patent: 359,197
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| Pipe Wrench
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Patentee:
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| Isaac Anderson (exact or similar names) - Saginaw, MI |
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Patent Dates:
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| Applied: |
Aug. 10, 1886 |
| Granted: |
Mar. 08, 1887 |
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Patent Pictures:
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Isaac Anderson patent March 8, 1887 |
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Stan Schulz
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Description: |
| A compound hook variation on the hook-jaw pipe wrench theme, evolved from Anderson's 1886 patent no 340,410. The end of the lever acts as a cam to wrap the jaw segments around the work piece. A spring holds the jaws closed. The jaw pivot can be shifted in a slot for size adjustment.
Ken Cope's "American Wrench Makers 1830-1930" notes Anderson was advertising the wrench in 1887. |
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