US Patent: 622,428
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| Wrench
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Patentee:
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| Charles Carroll Harpold (exact or similar names) - Italy, TX |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 19, 1898 |
| Granted: |
Apr. 04, 1899 |
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Patent Pictures:
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Charles Carroll Harpold patent April 4, 1899 |
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Stan Schulz
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Description: |
| The main handle has a semi-circular head with several tapered sockets at different angles. The adjustable jaw insert has a threaded end and is held in place by a thumb nut. Tapered shank socket inserts and screwdriver blades are also noted in the specifications. |
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