DROP IRRIGATION DEVICE Russian patent published in 1995 - IPC

FIELD: agriculture. SUBSTANCE: pipeline 1 for drop irrigation has larger section main slot 2 and smaller section additional slot 3, variable-section cord 4 with water rate marks on its surface. Variable-section cord 4 is made in form of elongated trapezium. Cord is passed through water outlet holes 2 and 3. Member 5 serves to fix cord 4 in required position. To increase or decrease water flow rate through pipeline 1 cord 4 is released from clamping member 5 and is moved to increase or decrease flow rate, as need be, with subsequently fixing it in position by means of clamping member 5. EFFECT: enlarged operating capabilities. 2 dwg