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US Patent: 2,441,414
Drill press
Patentees:
Paul A. Smith (exact or similar names) - Detroit, MI
Ernest F. Hohwart (exact or similar names) - Detroit, MI
George Hohwart (exact or similar names) - Detroit, MI

USPTO Classifications:
408/129, 74/840

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

Assignees:
N. A. Woodworth Co. - Ferndale, MI

Manufacturer:
N. A. Woodworth Co. - Ferndale, MI

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 27, 1945
Granted: May 11, 1948

Patent Pictures:
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Vintage Machinery entry for N. A. Woodworth Co.
Description:
The primary innovation is a method of limiting the advance of the drill bit in a self-feeding drilling machine so as to prevent the bit from being damaged when it breaks through the workpiece which normally causes a large shock or jolt.

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