US Patent: 313,193
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| Device for Locking Joints
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Patentee:
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| Edward L. Gaylord (exact or similar names) - Bridgeport, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 03, 1884 |
| Granted: |
Mar. 03, 1885 |
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Russ Allen.
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Description: |
| Screw with both right and left handed threads and the central body formed to allow a wrench to turn the screw, draws both frame pieces together.
The first of six patents awarded to Gaylord on this day, all relating to the picture framing industry. |
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