US Patent: 2,385,902
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| Fixture for grinding thread-cutting tools
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Patentee:
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| Harry C. Wilson (exact or similar names) - Huntington Park, CA |
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Patent Dates:
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| Applied: |
Mar. 01, 1943 |
| Granted: |
Oct. 02, 1945 |
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Jeff Joslin
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Description: |
| This "tumble block" has angles on it to enable the grinding of thread-cutting lathe tools. Also available were accessory blocks to adjust for the tilt angle of Armstrong-style tool holders. One example we have seen was in the original box, labeled as "Clark / Thread Tool Grinding Fixture / Model 'A' / Robert H. Clark Company / Los Angeles, Cal." The logo consists of two script C's. |
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