X-Y Plotter

Details X-Y Plotter X-Y Plotter

1982-11-15

1984-09-25

Hartary, Joseph W.

Recorders

Record receiver removal and marker displacement

271273, 346134, G01D 938

Patent

active

RE0316849

ABSTRACT:
A chart recording instrument having electromechanical servos which move a pen or stylus in the X-direction along a paper chart, and move the chart with respect to the pen in the Y-direction. A novel mechanism provides for ease in loading and unloading charts, and for accurate relocation of the chart, whereby a chart can be removed from the machine and then replaced accurately without disturbing any of the gain or zero control settings. Thus a curve can be recorded, the chart removed, and then put back to record another curve in the same family. These functions are controlled by a three-position lever which lifts and lowers the pen, raises and lowers pinch rollers in the Y-axis chart drive system, controls a pair of chart positioning stops, and switches appropriate positioning voltages to the servos.

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