US Patent: 2,267,238 - Drill press driving mechanism


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US Patent: 2,267,238

Drill press driving mechanism

Patentee:

George W. Irwin (exact or similar names) - Holland, OH

USPTO Classifications:

474/27

Tool Categories:

metalworking machines : drilling and boring : drill presses

woodworking machines : wood drilling and boring : drill presses

Assignees:

Toledo General Mfg. Co. - Toledo, OH

Manufacturer:

Toledo General Mfg. Co. - Toledo, OH

Witnesses:

Unknown

Patent Dates:
Applied:	Jun. 23, 1939
Granted:	Dec. 23, 1941

Patent Pictures:

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Vintage Machinery entry for Demco Machine Tool Co.

Description:

The assignee acquired drilling machine maker Demco Machine Tool Co. in the early 1930s; the variable-speed mechanism in the patent was presumably used on the assignee's "Demco" brand drill presses.