US Patent: 489,523
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| Wrench Milling Machine
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Patentee:
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| Varnum F. Carpenter (exact or similar names) - Cleveland, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 04, 1892 |
| Granted: |
Jan. 10, 1893 |
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Patent Pictures:
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Varnum F. Carpenter patent January 10, 1893 |
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Stan Schulz
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Description: |
| Plungers operated by an eccentric crank push the wrench blank through the milling cutters. The plates with the cutters are described in some detail. The wrench form shown is the shank and head of a "monkey wrench." |
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