US Patent: 489,455
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| Pipe Wrench
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| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 21, 1892 |
| Granted: |
Jan. 10, 1893 |
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Patent Pictures:
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George W. Bufford and John E. Kitson patent January 10, 1893 |
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Stan Schulz
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Description: |
| A spring on the shank of the handle positions the movable jaw, and keeps the adjusting nut bearing against the rocking thrust ring.
The stationary jaw surface can be removed and reversed to address wear.
A related design, with this design as an "alternate form" was registered Jan. 10, 1893 in Britain as patent GB-189300556. |
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