US Patent: 481,506
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| Wrench
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Patentee:
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| Bernard McGilvray (exact or similar names) - Washington, DC |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 10, 1892 |
| Granted: |
Aug. 23, 1892 |
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Patent Pictures:
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Bernard McGilvray patent August 23, 1892 |
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Stan Schulz
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Description: |
| Screw adjusting combination nut and pipe wrench. The adjusting rosette has holes for insertion of a rod for extra leverage. The intermediate jaw piece has pipe gripping teeth on one face, and spring clips to hold it in place when used for gripping pipe. |
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