US Patent: 3,543,445 - Apparatus for grinding drills


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US Patent: 3,543,445

Apparatus for grinding drills

Patentees:

Ernst Borchert, III (exact or similar names) - Pomona, CA

John Robert Southland (exact or similar names) - Arcadia, CA

USPTO Classifications:

451/121, 451/151, 451/276

Tool Categories:

metalworking machines : grinders : drill grinders

Assignees:

Winslow Product Engineering Corp. - Arcadia, CA

Manufacturer:

Winslow Product Engineering Corp. - Arcadia, CA

Giddings & Lewis Machine Tool Co. - Fond du Lac, WI

Witnesses:

Unknown

Patent Dates:
Applied:	Apr. 14, 1967
Granted:	Dec. 01, 1970

Patent Pictures:

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Description:

This is the "Winslowmatic" drill point grinder for grinding and sharpening split-point twist drills, which was made by the assignee, and was subsequently manufactured by Giddings & Lewis.