Chart recorders

Details Chart recorders Chart recorders

1978-09-21

1980-07-29

Miller, Jr., George H.

Recorders

Record receivers and/or driving means therefor

Web

346 65, 346113, G01D 1524, G01D 900, G01D 1516

Patent

active

042153514

ABSTRACT:
In a potentiometric chart recorder, the speed of the chart motor 22 is, in one mode of operation (AUTO) selected by a switch 32, varied between two values in dependence upon the rate of change or slope of the input signal at 10 as detected in a detector 30. The slow speed is obtained by intermittent operation at the fast speed, and during the non-operative periods power-consuming circuitry e.g. 16, 18, 26 is switched off by a switch 40.

REFERENCES:
patent: 2228883 (1941-01-01), Morgan
patent: 2647033 (1953-07-01), Faus
patent: 2890924 (1959-06-01), Norfolk, Jr.
patent: 3245083 (1966-04-01), Wilson et al.
patent: 3965434 (1960-12-01), Downs
patent: 4017868 (1977-04-01), Keating

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