US Patent: 419,571
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Wrench
Improvements in Ratchet Wrenches
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Patentee:
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| Fredrick S. Thring (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: |
May 31, 1889 |
| Granted: |
Jan. 14, 1890 |
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Patent Pictures:
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Fredrick S. Thring patent January 14, 1890 |
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Stan Schulz
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Description: |
| Reversible ratchet with interchangeable "chucks" (sockets). A swinging "T" frame holds the ratchet pawls. The specifications are vague on how the ratchet teeth and the chucks are connected, and how the chucks are retained in the frame. |
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