Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1974-09-10
1976-09-21
Tolin, Gerald P.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
178 18, 346 31, 318577, 318647, 318675, G05B 1936
Patent
active
039821650
ABSTRACT:
An apparatus capable of digitizing or plotting coordinate locations and lines utilizes an automatically controlled carriage that is translated over the supporting surface of a digitizing and plotting table and a free cursor for identifying specific coordinate locations on the table. Radiation means, such as electromagnetic coils, are mounted on the carriage and the cursor to produce signals indicative of the relative positioning of the carriage and cursor during a digitizing mode of operation. The position signals are transmitted to controlled drive motors which cause the carriage to follow the cursor over the supporting surface. Encoders, also operated by the drive motors, allow the position of the carriage and, hence, the cursor to be recorded for subsequent usage. A plotting instrument such as a pen is mounted on the carriage so that the apparatus can be used in a plotting mode of operation to generate graphic information.
REFERENCES:
patent: 3636256 (1972-01-01), Cameron
patent: 3876831 (1975-04-01), Wickham et al.
Feldhaus John J.
The Gerber Scientific Instrument Company
Tolin Gerald P.
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