Depth control mechanism for an implement

摘要

A chain is connected at its distal end to the pin at the rod end of a cylinder on an implement lift and depth control assembly. An intermediate portion of the chain is trained around a gear which rotates about the axis of the pin connecting the base end of the cylinder to the implement frame. An adjustable length, spring-biased rod is connected to the proximal end of the chain to maintain tension in the chain and operate a single point depth control valve to establish a highly accurate and repeatable depth setting which is dependent directly on cylinder rod extension and therefore less susceptible to looseness in the implement lift system.