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Fig. 12. (a) The ground-driven, horse-drawn combine replaced the stationary thresher (see Fig. 5b) in earnest about 1910. The larger machines with 6-m headers required a four- to six-man crew and 27 to 34 horses or mules. Straw was spread on the ground and grain was sacked and piled into small stacks of four or five sacks in the field before hauling to warehouses. Photo from Brumfield (1968). (b) Gasoline engines began to replace the ground-drive combine in the late teens that reduced manpower requirements and horses by about one-third. Photo from Northwest Museum of Arts and Culture, Spokane, WA, L93-62.10.
