Patent ID: 6223832
Filing Date: 2001-05-01
Classification: A01B

Abstract:
An agricultural implement including a plurality of disks supported for rotation about an axis from a disk frame for tilling soil and sizing trash, the disks supported by a cushion member from the disk frame and moveable relative to the disk frame vertically and from side to side with changes in soil conditions, an elongated support slidably mounted from the disk frame adjacent the disks and movable relative to the disks, a plurality of scrapers connected to the support and extending toward the disks, a hydraulic cylinder connected between the support and the disk frame for moving the support relative to the disk frame and biasing the scrapers into scraping relationship with the disks to thereby remove soil and trash from the disks, and an adjustable control valve assembly connected to the cylinder at a location remote from the support and to a source of hydraulic fluid under pressure to move the support in response to changes in the biasing, the control valve assembly including an adjustable pressure control located remotely from the disks to automatically maintain a preselected scraper bias as the disks move vertically and from side to side relative to the disk frame with changing ground and debris conditions, the motor control providing adjustability of the preselected bias on-the-go from a location remote from the disks.