US Patent: 501,177
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| Wrench and Rod Vise
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Patentee:
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| John J. Wulff (exact or similar names) - Blair, NE |
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Patent Dates:
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| Applied: |
Nov. 14, 1892 |
| Granted: |
Jul. 11, 1893 |
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Patent Pictures:
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John J. Wulff Pat. July 11, 1893 |
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Stan Schulz
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Description: |
| The patent is for the slot and set screw combination which creates a wrench or holding clamp for well pump-rod. 3 Known examples of the tool appear as (1) "stand alone" marked T P. Co. Rockford Ill / ROD HOLDER. (2)unmarked as the "handle" end of a malleable iron "implement wrench." and (3) unmarked "stand-alone" with loop handle. T P Co was Trahern Pump Co, Rockford, Ill.
Corresponding Canadian patent no. CA-46,668 was issued July 26, 1894.
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