US Patent: 670,681
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| Adjustable Pipe and Nut Wrench
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Patentee:
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| Henry J. Martin (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Nov. 10, 1900 |
| Granted: |
Mar. 26, 1901 |
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Patent Pictures:
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Henry J. Martin patent March 26, 1901 |
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Stan Schulz
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Description: |
| The center adjusting bolt opens and closes the movable jaws which are hinged by pivot screws at their outer edges. Marketed as the BULL TERRIER by Whitman and Barnes.
Few examples of the W&B BULL TERRIER are known; it probably was not a commercial success compared to the ELGIN (pat. nos. 584,019 & 809,755), or the Charles S. Bonney patent (no. 728,842) distributed as the Diamond Edge and KEEN KUTTER adjustable alligator wrench. |
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