US Patent: 613,213
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| Wrench
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Patentee:
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| William F. Murphy (exact or similar names) - Boston, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 12, 1898 |
| Granted: |
Oct. 25, 1898 |
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Patent Pictures:
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William F. Murphy patent October 28, 1898 |
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Stan Schulz
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Description: |
| Turning the handle engages or releases the toothed clamping block that sets the adjustment of the movable jaw. |
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