Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1988-12-22
1990-08-21
Noland, Tom
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
738659, G01F 2500
Patent
active
049495704
ABSTRACT:
The method and apparatus of the present invention enables a farmer or other agricultural worker to conveniently and efficiently calibrate the rate at which a granular material, particularly a granular pesticide, is dispensed from an agricultural planter. A stationary calibration unit has a motor and a rotatable shaft. The rotatable shaft is insertable into a pesticide dispenser forming part of the agricultural planter. Rotation of the shaft simulates movement of the agricultural vehicle carrying the planter in the field to determine the rate at which a granular pesticide is dispensed. The dispensing rate may thereafter be adjusted to a desired value and checked by again running the motor of the stationary unit to simulate field conditions. The calibration unit enables adjustment and recalibration of the dispensing rate of granular pesticide from an agricultural planter without the necessity and burden of performing trial and error field measurements and adjustments.
REFERENCES:
patent: 2664907 (1954-01-01), Lowe
patent: 4331262 (1982-05-01), Snyder et al.
patent: 4663960 (1987-05-01), Makkink
patent: 4667503 (1987-05-01), Loos
patent: 4693122 (1987-09-01), Griffith
Harmon David
Hines Winston H.
American Cyanamid Company
Noland Tom
Stone Mark P.
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