US Patent: 395,213
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| Machine For Truing and Dressing Wrench Blanks
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Patentee:
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| Matthew E. Campfield (exact or similar names) - Pittsburgh, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 23, 1888 |
| Granted: |
Dec. 25, 1888 |
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Patent Pictures:
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Matthew E. Campfield patent Dec. 25, 1988 |
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Stan Schulz
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Description: |
| The machine has paired cutters to size all four sides and a portion of the face of the fixed jaw of a rectangular monkey wrench shank in two passes. The cutters are solidly fixed, and the reciprocating plungers force the wrench-blanks into the cutters. There are spaces at either end of the cutters for insertion and removal of the work pieces. |
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