US Patent: 1,929,814
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| Feed tripping mechanism for drilling machines
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Patentees:
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| Fred M. Hanna (exact or similar names) - Rockford, IL |
| Walter M. Fairbairn (exact or similar names) - Rockford, IL |
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Patent Dates:
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| Applied: |
Dec. 04, 1930 |
| Granted: |
Oct. 10, 1933 |
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Jeff Joslin
Vintage Machinery entry for Barnes Drill Co.
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Description: |
| This patent covers a feed tripping mechanism that supports both automatic and manual starting and stopping. |
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