US Patent: 603,572
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| Wrench
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Patentee:
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| Frederick Olsen (exact or similar names) - New York, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 13, 1897 |
| Granted: |
May 03, 1898 |
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Patent Pictures:
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Frederick Olsen patent May 3, 1898 |
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Stan Schulz
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Description: |
| An adjusting nut with left- and right-hand threads moves paired jaws that have extensions with rack teeth. Two alternate arrangements for the adjusting nut are shown and described. |
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