US Patent: 451,183
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| Wrench
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Patentee:
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| George F. Hall (exact or similar names) - Newark, NJ |
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Patent Dates:
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| Applied: |
Feb. 25, 1891 |
| Granted: |
Apr. 28, 1891 |
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Patent Pictures:
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George F. Hall patent April 28, 1891 |
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Stan Schulz
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Description: |
| Turning the handle clamps or loosens the grip between the wedge and the shank of the movable jaw. Both the wedge and jaw shank have fine serrations. Corresponding British patent GB-189107952 was registered May 8, 1891.
The patent is an evolution of Hall's Nov. 26, 1889 patent (no. 415,969). |
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