US Patent: 956,280
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Wrench
One-Piece Pipe Wrench
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Patentee:
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| George Bryar (exact or similar names) - Boston, MA |
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Patent Dates:
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| Applied: |
Apr. 18, 1908 |
| Granted: |
Apr. 26, 1910 |
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Patent Pictures:
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George Bryar Pat. Apr. 26, 1910 |
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Stan Schulz
SHAW WRENCH (FLICKR)
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Description: |
| The long slot in the handle provides the spring action to allow the alligator wrench jaws to grip and release pipe.
Compare this to Frederick E. Walden's March 9, 1920 patent (no. 1,333,517), produced as the WAL-PAT pipe wrench.
Daniel R. Porter's January 10, 1888 adjustable pipe wrench (pat. no. 376,396) also had a wedge-shaped opening and a springing jaw. |
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