US Patent: 604,391
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| Wrench
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Patentee:
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| Henry J. Hancock (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. 19, 1897 |
| Granted: |
May 24, 1898 |
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Patent Pictures:
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Henry J. Hancock patent May 24, 1898 |
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Stan Schulz
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Description: |
| The shank for one jaw has left-hand threads. The shank for the other jaw has right-hand threads. The end of one shank is a screwdriver. The interior of the adjusting sleeve has both left- and right-hand threads. |
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