Feedback controlled roller applicator

Details Feedback controlled roller applicator Feedback controlled roller applicator

1979-07-10

1980-09-23

Bagwill, Robert E.

Plant husbandry

Plant surface contact material applicator

101363, 101DIG24, B05C 100

Patent

active

042234794

ABSTRACT:
To apply herbicide to weeds extending above a crop, a nylon carpet on the cylinder of a roller applicator has herbicide applied to it as a tractor or other vehicle carries it through a field. The roller is held just above the crop where it contacts weeds and is rotated in the opposite direction as the tractor. A moisture sensor is spaced from the applicator on the roller and controls a valve that applies the herbicide to the roller to maintain a preset moisture level in the roller carpet. The amount of moisture is set by experimentation to permit an adequate amount of herbicide to be applied to various weeds without causing dripping from the point of contact on the roller by the weeds.

REFERENCES:
patent: 3232006 (1966-02-01), Atherton et al.
patent: 3730086 (1973-05-01), Dauterman
patent: 3884076 (1975-05-01), Studer
patent: 4019278 (1977-04-01), McKirdy
Liquid Level Detector, Carmichael et al., IBM Tech. Disc. Bull., vol. 16, No. 3, Aug. 1973, p. 775.

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