US Patent: 241,353
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| Wrench
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Patentee:
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| John Grein (exact or similar names) - Maine Prairie, MN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 16, 1881 |
| Granted: |
May 10, 1881 |
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Patent Pictures:
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John Grein Pat. May 10, 1881 |
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Stan Schulz
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Description: |
| An axle-nut wrench based on the idea of tongs with a swinging loop at the end of one handle that engages rack teeth on the end of the other handle to hold the grip. |
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