US Patent: 141,760
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| Machines for milling twist-drills
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Patentee:
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| Simon Whipple Card (exact or similar names) - Mansfield, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 30, 1873 |
| Granted: |
Aug. 12, 1873 |
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Jeff Joslin
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Description: |
| The inventor was owner of the S. W. Card Mfg. Co., makers of taps and dies. That firm was established about 1874 and was acquired by the Union Twist Drill Co. in 1908 and operated as a separate division of that firm until at least 1928. |
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