US Patent: 161,022
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| Improvement in Wrenches
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Patentee:
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| George W. Freeman (exact or similar names) - Indianapolis, IN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 28, 1874 |
| Granted: |
Mar. 23, 1875 |
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Patent Pictures:
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George W. Freeman Pat. March 23, 1875 |
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Stan Schulz
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Description: |
| The wrench has "scroll-shaped" openings with interchangeable insertable sockets that have a number of teeth around their circumference. The single "tooth" on the scroll can engage with a tooth on the socket to transfer force. There are no springs or pawls in this construction. |
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