US Patent: 540,567
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| Nut and Pipe Wrench
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Patentee:
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| Rufus H. Woodbury (exact or similar names) - Beverly, MA |
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Patent Dates:
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| Applied: |
Oct. 12, 1894 |
| Granted: |
Jun. 04, 1895 |
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Patent Pictures:
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Rufus H. Woodbury patent June 4, 1895 |
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Stan Schulz
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Description: |
| Quick adjust with a steep-pitch screw. The adjusting nut has a serrated face on the surface facing the jaw, that engages with a serrated face in the movable jaw structure to hold adjustment.
Ken Cope's "American Wrench Makers 1830-1930" assumes Woodbury produced the wrench. A nominal 6 inch nut wrench example includes a hole in the movable jaw frame to oil the threads. The fixed jaw on that example appears to be threaded & pinned to the shank, suggesting that the parts were all machined. |
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