US Patent: 2,457,458 - Speed device


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US Patent: 2,457,458

Speed device

Patentee:

Clyde A. Girod (exact or similar names) - Winona, MN

USPTO Classifications:

474/78, 474/89

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:	Nov. 27, 1945
Granted:	Dec. 28, 1948

Patent Pictures:

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Description:

The invention is a speed-change mechanism for a drill press that allows quick changing of the spindle speed when driven by a single-speed electric motor.