English: New Holland TR70 combine harvester on display at The Henry Ford museum, Michigan, USA. – In a single operation, this combine cut down cornstalks, separated and husked the ears, chopped the cornstalks for fodder, and shelled the kernels. The TR70 combine revolutionized both corn and grain harvesting. This particular machine has a corn harvesting head, or front-end attachment. Using this head, this combine drastically.