US Patent: 448,114
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| Wrench
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Patentee:
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| Harrison T. Briggs (exact or similar names) - South Bend, IN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 20, 1890 |
| Granted: |
Mar. 10, 1891 |
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Patent Pictures:
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Harrison T. Briggs patent March 10, 1891 |
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Stan Schulz
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Description: |
| A spring between the base of the hook jaw and the shank serves both to close the jaw, and pull the toothed interior of the sliding collar into engagement with the rack teeth on the main shank. |
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