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US Patent: 2,439,965
Drill press
Patentee:
John A. Cupier (exact or similar names) - Cumberland, MD

USPTO Classifications:
408/235, 408/89

Tool Categories:
metalworking machines : drilling and boring : drill presses
woodworking machines : wood drilling and boring : drill presses

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 09, 1943
Granted: Apr. 20, 1948

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
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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