US Patent: 597,743
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| Wrench
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Patentees:
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| Stephen D. Robinson (exact or similar names) - Farmingdale, SD |
| Bennie M. Doud (exact or similar names) - Farmingdale, SD |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 12, 1897 |
| Granted: |
Jan. 25, 1898 |
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Patent Pictures:
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Stephen D. Robinson and Bennie M. Doud patent January 25, 1898 |
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Stan Schulz
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Description: |
| The main parts are formed of "U" shaped stampings. The pivot point for the movable jaw is adjustable to expand the range of sizes the wrench can handle.
The lever handle operating the jaw compounds the gripping force applied by the jaws. |
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