US Patent: 3,369,820 - Power Chuck


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US Patent: 3,369,820

Power Chuck

Patentees:

Robert A. Lehmkuhl (exact or similar names) - Appleton, Outagamie County, WI, WI

Robert E. Reed (exact or similar names) - Kaukanuna, Outagamie County, WI

USPTO Classifications:

279/103, 279/141, 279/4.06, 279/74, 279/900, 409/232

Tool Categories:

metalworking machines : milling machines : milling machine accessories

Assignees:

Giddings & Lewis, Inc. - Fond Du Lac, Fond Du Lac County, WI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Jan. 28, 1965
Granted:	Feb. 20, 1968

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.

Description:

Original application filed 19 Sept., 1962. Divided and this application filed 28 Jan., 1965. This application is a division of application filed 19 Sept., 1962, now abandoned in favor of continuation application thereof, filed 22 Nov., 1965, now Patent No. 3,332,142.

Claim:

This invention relates to machine tools and more particularly to machine tools with automatic tool changing apparatus wherein a spindle and a tool assembly are provided with mating means for effecting positive driving engagement there between.