US Patent: 1,830,679 - Drill spindle


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US Patent: 1,830,679

Drill spindle

Patentee:

Charles F. Schenck (exact or similar names) - Toledo, OH

USPTO Classifications:

384/611, 408/135, 464/162

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:	Aug. 22, 1929
Granted:	Nov. 03, 1931

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 spindle bearing arrangement in the patent was presumably used on the assignee's "Demco" brand drill presses.