Row crop harvester guidance system control circuit

Details Row crop harvester guidance system control circuit Row crop harvester guidance system control circuit

1983-09-06

1985-03-19

Mancene, Gene

Harvesters

Motorized harvester

With condition-responsive operation

56DIG15, 180 791, 180131, 1042441, A01D 7528

Patent

active

045050945

ABSTRACT:
A row crop harvester guidance system control circuit comprises a control valve for actuating a hydraulic cylinder connected to the tongue of a pull type harvester responsive either to first and second row crop sensing units mounted on opposite sides of a crop receiving passageway of the harvester or to a manual override switch. The row crop sensing units operate respectively a pair of sensor switches connected in circuit with the control valve. To prevent simultaneous generation of signals by both of the sensor switches, a pair of relays are connected in circuit with the sensor switches and the control valve. The manual override switch is connected in circuit with the relays and generates a control signal for operation of the hydraulic cylinder. The control signal has priority over any contradictory signal generated automatically by either of the sensor switches.

REFERENCES:
patent: 3791117 (1974-02-01), Lawrence
patent: 4115983 (1978-09-01), Barnes et al.
patent: 4259831 (1981-04-01), Jerke et al.
patent: 4295323 (1981-10-01), Maier et al.

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