Patent ID: 8720172

Claim:
A first snap roll in combination with a second snap roll for harvesting stalk crops wherein said first and second snap rolls have outer surfaces that each comprise a plurality of flat sides, and first and second pluralities of straight chopping portions extending from flat members mounted on said first and second snap rolls, respectively, each of said straight chopping portions substantially straight relative at least most of their length and misaligned with a central axis of rotation of its respective snap roll such that each flat member on said straight chopping portions extends diagonally across a corresponding one of said flat sides, said first and second snap rolls opposing one another and when counter rotating a portion of one of said straight chopping portions of said first snap roll works along a portion of a corresponding one of said straight chopping portions of said second snap roll to define a point for engaging crop stalks between said corresponding straight chopping portions and as said first and second snap rolls counter rotate said point moves from leading ends of said first and second snap rolls toward trailing ends of said first and second snap rolls, said corresponding straight chopping portions separating from one another following said point as said point moves from leading ends to trailing ends of said straight chopping portions of said first and second snap rolls.