US Patent: 547,653
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| Pipe Wrench
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Patentees:
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| William H. Burr (exact or similar names) - Philadelphia, PA |
| S. Lloyd Wiegand (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 11, 1895 |
| Granted: |
Oct. 08, 1895 |
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Patent Pictures:
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William H. Burr and S. Lloyd Wiegand patent October 8, 1895 |
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Stan Schulz
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Description: |
| The three-part gripping sleeve was designed for non-marring grip. The parts are designed with ribs and webs to avoid varying metal thicknesses which cause problems during casting. The parts interlock, and are held onto the handle by a spring latch. One handle would be supplied with a range of gripping sleeves corresponding to standard pipe sizes. Corresponding British patent GB-189518831 was registered Oct. 8, 1895.
The Parmelee wrenches use a similar three-part gripping sleeve, but those use pins to connect the segments -- (see patent nos. 379,123, 648,706, and 871,436). |
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