US Patent: 690,764 - Drill-socket


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US Patent: 690,764

Drill-socket

Patentee:

Otto A. Parpart (exact or similar names) - Cleveland, OH

USPTO Classifications:

279/71

Tool Categories:

metalworking machines : drilling and boring : drill presses : drill press chucks

woodworking machines : wood drilling and boring : drill presses : drill press chucks

Assignees:

Standard Tool Co. (Cleveland) - Cleveland, OH

Manufacturer:

Standard Tool Co. (Cleveland) - Cleveland, OH

Witnesses:

William Secher

H. A. Higgins

Patent Dates:
Applied:	Nov. 20, 1900
Granted:	Jan. 07, 1902

Patent Pictures:

USPTO (New site tip)
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Standard Tool Co. (Cleveland)

Description:

This invent is a tapered socket for a drill press or lathe tailstock. The intent is to do away with the usual "nib" on the tapered end of the drill bit that prevents the bit from rotating within the socket; that nib was prone to breakage.