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US Patent: 3,539,789
Selective Dial in Representation of Digital Numbers for Machine Tool Control
Patentee:
Arthur O. Fitzner (exact or similar names) - Fond du Lac, Fond du Lac County,

USPTO Classifications:
341/115

Tool Categories:
metalworking machines : machine tool controls
metalworking machines : metalworking machine mechanisms : nc and cnc apparatus

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

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 28, 1967
Granted: Nov. 10, 1970

Patent Pictures:
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Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
Description:
Abstract:

In a numerical control for a machine tool, desired and actual machine tool positions are digitally signaled to a positioning servomechanism. In order to compensate for the individual characteristics of different tools in a turret, a digitally signaled correction number is produced for each of them. As the machine is instructed to index the various tools into working position, the correction numbers associated with those tools are utilized.

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