US Patent: 423,509
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| Wrench
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Patentee:
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| Fredrick F. Asmus (exact or similar names) - Hull Prairie, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 10, 1890 |
| Granted: |
Mar. 18, 1890 |
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Patent Pictures:
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Fredrick F. Asmus patent March 18, 1890 |
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Stan Schulz
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Description: |
| Quick adjust combination pipe and nut wrench. Paired spring pawls engage rack teeth on sliding side pieces. A collar with a slight tapered base can advance and retract these side pieces for fine adjustment. |
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