Compact folding row marker

Abstract

A folding row marker assembly for use with an agricultural implement has an inner link assembly that includes both a mounting that attaches to the agricultural implement and one or more inner link members. The row marker further includes first arm members that hingedly connect to both the first link assembly and an outer link assembly. In one embodiment, the folding row marker assembly has two sections, including an outer arm member that hingedly connects to the outer link assembly and connects to a marker. In an alternative three-section embodiment, the outer link assembly includes a middle section having a middle link assembly that connects to the inner arm members, an outboard link assembly that connects to the outer arm member, and middle arm members that connect the middle link assembly to the outboard link assembly. In the row marker, a radial motion of the inner arm members around the inner link assembly, caused by an actuating mechanism such as a hydraulic cylinder that is connected to one of the inner link member and one of the inner arm members, results in the in a controlled radial motion of the outer arm member around the outer link assembly. As a result, the folding row marker assembly moves between a folded storage position and an extended, generally horizontal use position in which the marker engages the ground.