The Illinois Thersher Company was located in Sycamore, Illinois and was started by William N. Rumely who was the son of Meinard Rumely who started the M. Rumely Co. of Laporte, Indiana.
The Illinois Thresher Company was know to have manufactured Steam traction engines (ca 1915), the Scientific Combination thresher-huller, a gearless wind stacker, and separators
Information Sources:
- Norbeck, Jack, Encyclopedia of American Steam Traction Engines, Crestline Publishing Inc, Glen Ellyn, Illinois, pg. 151
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Steam Power on the American Farm by Reynold M. Wik, 1953 page 255