US Patent: 66,051
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| Improvement in Screw-Wrenches
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Patentee:
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| Isaac H. Smith (exact or similar names) - Albany, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jun. 25, 1867 |
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Patent Pictures:
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Isaac H. Smith Pat. June 25, 1867 |
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Stan Schulz
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Description: |
| The patent is a flattened or concave side on the adjusting screw. When the flat or concave side is turned toward the rack threads on the bar, the movable jaw is free to slide. The remaining adjusting thread not only holds the movable jaw but allows for some range of adjustment. |
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