US Patent: 16,733
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| Improvement in Screw-Wrenches
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Patentee:
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| Benjamin F. Joslyn (exact or similar names) - Worcester, MA |
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Patent Dates:
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| Granted: |
Mar. 03, 1857 |
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Patent Pictures:
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Benjamin F. Joslyn patent March 3, 1857 |
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Stan Schulz
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Description: |
| This modification of Joslyn's July 10, 1855 patent (no 13,221) has threads on two sides of the adjustable jaw rather than only on one side, and reflects the way the wrench was actually produced. |
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