Remotely adjustable disk leveling system

摘要

Adjustable link structure for providing on-to-go disk harrow adjustment from the cab of the towing vehicle. The mechanism for automatically maintaining the frame of a disk harrow at a level condition as the frame is raised and lowered relative to the ground includes an adjustable link member with a rotary hydraulic motor utilized to adjust a mechanical screw type mechanism to maintain a set adjustment position independently of continued fluid pressure to the motor.