US Patent: 419,884
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| Milling-machine vise
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Patentee:
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| Francis H. Richards (exact or similar names) - Hartford, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 06, 1889 |
| Granted: |
Jan. 21, 1890 |
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Carl Matthews
Wikipedia biography of Eckley B. Coxe
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Description: |
| Inventor Francis H. Richards was a mechanical engineer and a prolific inventor, obtaining well over 200 patents in the course of his life. He worked for Pratt & Whitney 1883-1886. It is not known whether this milling machine vise was ever manufactured. |
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