Harvesters – Motorized harvester – With condition-responsive operation
Patent
1978-09-25
1980-04-15
Kinsey, Russell R.
Harvesters
Motorized harvester
With condition-responsive operation
56 51, A01D 7528
Patent
active
041976916
ABSTRACT:
An automatic depth adjusting control system and method for controlling the vertical position of a pair of corn detasseling devices adjustably mounted on a farm implement for removing tassels from two adjacent rows of corn plants. The control system includes a parallel link system for supporting the corn detasseling devices, a hydraulic cylinder connected to the parallel link system for controlling the vertical movement thereof to raise and lower the pair of corn detasseling devices, and a crop sensing unit positioned forwardly of each of the detasseling devices for detecting the height of the corn plants in a corresponding corn row. Each crop sensing unit provides for the transmission of either a raise signal or a lower signal, in response to the height of the corn plants in an associated row, to electrical circuitry and then hydraulic circuitry for actuating the hydraulic cylinder. In response to such signals, the electrical and hydraulic circuitry raises the detasseling devices upon receiving a raise signal from at least one of the sensing units, and lowers the detasseling devices only upon receiving a lower signal simultaneously from both of the sensing units. The method of the present invention includes the sensing of the plant height of corn in two adjacent rows, and raising or lowering the position of the two corn detasseling devices for such rows relative to the height of the corn plants therein.
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
Hagie Manufacturing Co.
Kinsey Russell R.
Lowell Rudolph L.
Pingel G. Brian
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