US Patent: 308,561
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| Wrench
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Patentee:
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| John Houlehan (exact or similar names) - Toledo, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 19, 1884 |
| Granted: |
Nov. 25, 1884 |
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Patent Pictures:
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John Houlehan patent November 25, 1884 |
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Stan Schulz
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Description: |
| The patent is for the combination of screw adjust combined with two spring pawls on the sides of the movable jaw. This allows for screw and quick adjust.
It is an evolution of Houlehan's earlier patents (no. 278,553 and 289,347). |
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