US Patent: 492,401
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| Wrench
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Patentee:
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| William H. Kaltenbeck (exact or similar names) - Middlesborough, KY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 10, 1892 |
| Granted: |
Feb. 28, 1893 |
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Patent Pictures:
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William H. Kaltenbeck patent February 28, 1893 |
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Stan Schulz
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Description: |
| A quick-adjust mechanism where a collar with an eliptical shaped interior acts as clamping device for the movable jaw. |
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