US Patent: 39,206
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| Improved Screwdriver
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Patentee:
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| J. A. Ayres (exact or similar names) - Hartford, CT |
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Patent Dates:
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| Granted: |
Jul. 14, 1863 |
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Steve Gosselin
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Description: |
| Screwdriver blade is two ended: One end a conventional slotted screwdriver blade; the second end slotted to allow it to fully fill and grip the screw slot. It is designed to be used with a conventional screw or with his dovetail slotted screw, patented April, 14, 1863 38,141. One appeared in Martin J. Donelly Catalog |
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