Crop height sensing assembly for mechanical detasseling devices

Details Crop height sensing assembly for mechanical detasseling devices Crop height sensing assembly for mechanical detasseling devices

1978-09-25

1980-04-15

Kinsey, Russell R.

Harvesters

Motorized harvester

With condition-responsive operation

56 51, A01D 7528

Patent

active

041976940

ABSTRACT:
A crop height sensing assembly for use in a control system that automatically adjusts the depth or vertical elevation of a mechanical corn detasseling device in response to the height of a corn plant having a tassel with adjacent leaf portions. The detasseling device is adjustably carried on a portable frame for movement along a corn plant row, and the control system includes a hydraulic cylinder assembly for raising and lowering the detasseling device, and circuitry for actuating the cylinder assembly. The crop sensing assembly includes a rock shaft extended tranversely of the portable frame, a support for the sensing assembly carried on the frame forwardly of the detasseling device for movement therewith, a plurality of dependent sensor rods axially spaced on the rock shaft and rockable therewith in response to contact with the corn plant leaf portions, and a signal assembly responsive to the rockable movement of the shaft to produce a sensing signal for operating the actuating circuitry.

REFERENCES:
patent: 3196599 (1965-07-01), Meiners et al.
patent: 3524308 (1970-08-01), Spry
patent: 3710564 (1973-01-01), Sammann
patent: 3724184 (1973-04-01), Wright
patent: 3769782 (1973-11-01), Cler
patent: 3855761 (1974-12-01), Louks et al.
patent: 4141200 (1979-02-01), Johnson

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