US Patent: 460,155
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| Wrench
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Patentee:
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| Michael E. O'Connor (exact or similar names) - Brooklyn, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 01, 1888 |
| Granted: |
Sep. 29, 1891 |
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Patent Pictures:
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Michael E. O'Connor patent September 29, 1891 |
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Stan Schulz
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Description: |
| Screw-adjust "monkey wrench" with pipe gripping jaw inserts, and swinging handle with a cam that bears against the support the adjusting screw. This adds extra force to the movable jaw. |
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