US Patent: 231,763
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| Wrench
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Patentee:
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| William C. Coddington (exact or similar names) - Baltimore, MD |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 07, 1880 |
| Granted: |
Aug. 31, 1880 |
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Patent Pictures:
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William C. Coddington patent August 31,1880 |
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Stan Schulz
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Description: |
| The movable jaw has a clamping block that engages fine rack teeth on the shank. The clamping block is moved by a cam lever.
The specifications note the McManus April 1, 1856 patent (no. 14,571) and Knisely Dec. 6, 1870 patent (no. 109,913), and explain how this patent differs from them. |
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