Here is a video of Minneapolis-Moline Model D Corn Sheller in operation. Minneapolis entered the corn sheller business in 1910 with its big No. 2 cylinder shellers. Then, 1929 Minneapolis entered into a merger which formed Minneapolis-Moline. Because of this merger, the corn sheller line was enhanced considerably. Minneapolis-Moline corn shellers were probably the strongest competitors of John Deere cylinder shellers during the period of 1930 to 1950.