US Patent: 2,439,965
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| Drill press
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Patentee:
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| John A. Cupier (exact or similar names) - Cumberland, MD |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 09, 1943 |
| Granted: |
Apr. 20, 1948 |
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Jeff Joslin
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Description: |
| "In drilling small openings such as those required in spinnerettes and Diesel nozzles, for example, many problems arise which are not encountered in drilling operations of the ordinary machine shop variety. In this specialized branch of the drilling art, precision is of paramount importance. The drills themselves are of such diameter that in many cases their movements must be observed by means of a microscope..." |
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