US Patent: 178,408
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| Wrench
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Patentee:
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| Joseph N. Byington (exact or similar names) - Winona, MN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 15, 1876 |
| Granted: |
Jun. 06, 1876 |
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Patent Pictures:
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Joseph N. Byington Pat. June 6, 1876 |
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Stan Schulz
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Description: |
| A left- and right-hand threaded screw threads into the movable jaw and base on the main stock. The nut which turns the screw is free to slide over part of the screw. The inside of the nut has a lug, and the screw has a corresponding slot for a portion of its length. |
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