US Patent: 438,343
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| Pipe Wrench
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Patentee:
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| George H. Buzzell (exact or similar names) - Boston, MA |
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Patent Dates:
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| Applied: |
Aug. 18, 1890 |
| Granted: |
Oct. 14, 1890 |
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Patent Pictures:
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1 | 2
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George H. Buzzell patent October 14, 1890. Photo of example courtesy Martin J. Donnelly www.mjdtools.com |
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Stan Schulz
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Description: |
| The jaws are hinged at the back, and the frame has a wedge divider between the jaws to spread them as they slide further out.
Corresponding Canadian patent no. CA-36,254 was granted April 1, 1891.
The example pictured is from a Martin J. Donnelly auction; wood and steel handled specimens are known. Manufacturer attribution from Ken Cope's "American Wrench Makers 1830-1930."
An unmarked "T" handle basin wrench combines the adjustment means from this patent with the jaw form from Buzzell's Oct. 10, 1876 basin wrench patent (no. 183,901). |
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