Development of the agricultural tractor in the United States, Volume 2
American Society of Agricultural Engineers - Technology & Engineering
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2-plow tractor 4-cylinder 4-cylinder vertical 4-wheel tractor adjustable front axle adjustable rear Advance-Rumely agricultural Allis-Chalmers announced Avery butane capable of pulling Caterpillar Tractor Cletrac Cleveland Tractor crawler tractor cultivating cylinder diesel engine discontinued electric starting Farmall Fordson forward speeds front and rear fuel gasoline engine gear general-purpose Model general-purpose tractor Harry Ferguson Hart-Parr Huber hydraulic control ignition inches International Harvester introduced J. I. Case Threshing John Deere kerosene Lauson Machinery Massey-Harris McCormick-Deering Minneapolis Minneapolis-Moline model and horsepower models of tractors motor Nebr Nebraska test number of tractors octane Ohio Oil Pull Oliver Corp Oliver Farm Equipment operated percent plant plow capacity power take-off produced purpose tractor Racine rear wheels roller chains row crop rubber tires single front wheel standard equipment starting and lighting steel wheels tested at Lincoln Threshing Machine track-laying traction engine tractor fig tractor manufacturers tractor production tractors were tested tricycle type tricycle-type United