US Patent: 3,336,821 - Control of Machine Tools


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US Patent: 3,336,821

Control of Machine Tools

Patentee:

John Firth (exact or similar names) - Arbroath, Angus, Scotland

USPTO Classifications:

408/11, 408/130, 470/167

Tool Categories:

metalworking machines : metalworking machine mechanisms

metalworking machines : milling machines : milling machine accessories

Assignees:

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

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Oct. 27, 1965
Granted:	Aug. 22, 1967

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:

Priority application in Great Britain file 03 Nov., 1964.

Claim:

This invention relates to control of machine tools, especially but not exclusively to a feed control device for a machine tool in which in a first instance the rate of feed is controlled by change in axial pressure on the tool, and in a second instance in which the change from rapid motion to a predetermined feed rate is controlled by axial pressure on the tool.