Patent ID: 8720171

Claim:
In an attachment for a harvester, a forward-extending first row unit comprising at least one stripper plate at least partially defining a crop passage, said first stripper plate configured to remove useable parts from crop stalks gathered in said crop passage, said first row unit further comprising a first snap roll to pull the crop stalks in said crop passage against said stripper plate, said first snap roll comprising a plurality of straight portions wherein said straight portions are substantially straight relative at least most of their length, said straight portions misaligned with a central axis of rotation of said first snap roll, a length of one of said straight portions partially parallel misaligned with a length of another of said straight portions, wherein the rotation of said first snap roll with said plurality of straight portions creates a helical action, wherein said one straight portion is closer in proximity to a leading end of said first snap roll than said other straight portion but a leading end of said other straight portion extends forward of a trailing end of said one straight portion.