US Patent: 309,084
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| Wrench
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Patentee:
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| Frederick G. Osborn (exact or similar names) - Newark, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 24, 1884 |
| Granted: |
Dec. 09, 1884 |
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Patent Pictures:
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Frederick G. Osborn patent December 9, 1884 |
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Stan Schulz
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Description: |
| The interior of the movable jaw has a pawl lever with teeth that engage a rack on the main bar. The pivot point of the lever is loose enough that the strain is directly from the jaw to the pawl. A spring holds the pawl in engagement with the rack. A push button through the face of the movable jaw disengages the teeth for adjustment. |
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