1927 Great Northern Paper Co. The New Twin

After trying out a Lombard Full Tract that was specially built for Great Northern by Lombard, O.A. Harkness and his shop crew in Greenville figured they could improve upon it. The result is this machine. It has (2) Wisconsin Engines mounted in a 8 degree V. Each engine has a 5-3/4 inch bore and a 7 inch stroke and developed 63 h.p. @ 800 rpm. Each track is powered by its own engine, transmision and rear end gears. It is controlled by a steering wheel that throttles the engines and allows the tractor a top speed of 8 mph. The idea was to develope a machine that was as manuverable as a Holt but had the power and ability to haul long distances like Lombards Auto type tractors. It was the only one built. Submitted by Terence F. Harper, from ME