US Patent: 1,909,767
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| Machine tool
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Patentees:
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| Albert M. Johnson (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: |
Apr. 13, 1929 |
| Granted: |
May 16, 1933 |
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Jeff Joslin
Vintage Machinery entry for Barnes Drill Co.
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Description: |
| This patent covers "hydraulic means for indexing the work support, and a hydraulic control interconnecting the cyclic movement of the drill head and the indexing movement of the support so as to prevent the institution of the quick-approach until the indexing operation has been completed". |
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