AIR-OPERATED DRILL Russian patent published in 1994 - IPC

FIELD: agriculture mechanical engineering. SUBSTANCE: air operated drill has a hoper with supplier, material ducts positioned across the longitudinal axis inner ends of which is in communication with the supplier and compressed air source and outer ends have sprayers axes of which arranged over longitudinal axis of the material ducts. The sprayers positioned at central part are mounted in pairs and the sprayers which contain one pair are directed in opposite direction. The number of pairs of the sprayers are defined by a relationship available in the invention description. EFFECT: enhanced uniformity of spraying. 5 dwg