US Patent: 595,473
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| Adjustable Spanner-Wrench
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Patentee:
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| Robert Frederick Hall (exact or similar names) - Birmingham, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 04, 1897 |
| Granted: |
Dec. 14, 1897 |
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Patent Pictures:
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Robert Frederick Hall patent December 14, 1897 |
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Stan Schulz
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Description: |
| The patent claims the two-part construction which facilitates creating the opening for the movable jaw and adjusting worm, and the fold-out screwdriver at the end of the handle.
This had previously received British patent no. GB-189717432 on July 24, 1897. |
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