US Patent: 468,648
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| Wrench
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Patentee:
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| Thomas A. Ferguson (exact or similar names) - Lyons, NE |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 22, 1891 |
| Granted: |
Feb. 09, 1892 |
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Patent Pictures:
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Thomas A. Ferguson patent February 9, 1892 |
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Stan Schulz
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Description: |
| Pipe wrench with spring-loaded rocking movable jaw; size adjustment accomplished by a clamped sliding block with teeth that engage rack teeth on the divided shank. A screwdriver is needed to reset this clamp. |
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