Lower forming apron and drive for a crop material roll forming machine

Abstract From the Canadian patent

A crop material roll forming machine such as a large round baler, has a mobile frame adapted to travel across a field an upper apron movably, mounted on the frame that cooperates with an improved lower apron in defining a roll forming region therebetween. The lower apron is movably mounted on the frame below the upper apron and includes a series of fore-and-aft extending transversely spaced apart flexible members which are supported at their respective forward end portions by a first series of transversely spaced apart elements and at their respective rearward end portions by a second series of transversely spaced apart elements. The first series of elements are individually mounted on the …