US Patent: 109,913
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| Wrench
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Patentee:
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| Christian Knisely (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Dec. 06, 1870 |
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Patent Pictures:
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Christian Knisely Pat. Dec. 6, 1870 |
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Stan Schulz
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Description: |
| The cam lever applies pressure on a set of plates inside the movable jaw to hold adjustment. The space between the plates can be shimmed to compensate for wear or tighten the grip. A screw on the back of the shank prevents the movable head from sliding off. |
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