This tractor (serial #26080) was made by the Emerson-Brantingham Company of Rockford, Illinois. Formed in 1909, Emerson-Brantingham quickly expanded through the acquisition of several other farm implement firms. In 1912, for example, Emerson-Brantingham acquired the Gas Traction Company, which made the Big Four tractor, and the Geiser Manufacturing Company, which made the Peerless line of threshing machines. In 1928, Emerson-Brantingham, in decline itself, was acquired by the J. I. Case Company.
This Emerson tractor has a Donaldson air cleaner produced by the Donaldson Company in St. Paul, Minnesota. This air cleaner has three patent dates. The first is December 3, 1918, corresponding to patent 1286250, a patent for an air cleaner issued to William Donaldson. You can view the original Donaldson patent as a pdf here. The second date is February 7, 1922, for which we have not yet found a corresponding patent. The third is April 24, 1917, corresponding to patent 1223662, a patent for a "carbureter" issued to Ashley C. Bennett. You can view the original Bennett patent as a pdf here.
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