Search results
Results from the WOW.Com Content Network
Holt tried to solve the problem by increasing the size and width of the wheels, but this also made the tractors increasingly complex, expensive, and difficult to maintain. One tractor had wheels 7.5 feet (2.3 m) tall and 6 feet (1.8 m) wide, producing a tractor 46 feet (14 m) wide.
An obvious simplification was to take the technology of the tractor, but use only a single wheel and a smaller engine. Many of the large monowheel tractor's tasks would be in either replacing horse carts, or else as a cheaper substitute for more conventional tractors. S. E. Opperman of Boreham Wood did this in 1945 with their Opperman Motocart. [5]
Tractor-related injuries account for approximately 32% of the fatalities and 6% of the nonfatal injuries in agriculture. Over 50% is attributed to tractor overturns. [43] The roll-over protection structure (ROPS) and seat belt, when worn, [44] are the most important safety devices to protect operators from death during tractor overturns. [45] [46]
Unlike the earlier single cylinder tractor made by Hornsby, this was a twin cylinder, with the cylinders at an angle to each other in a vertical plane and sharing a common crankshaft. The engine ran at 350 rpm and had a governor which operated by cutting the fuel supply in a hit and miss method, though the driver could override the governor for ...
Agricultural steam engines took over the heavy pulling work of oxen, and were also equipped with a pulley that could power stationary machines via the use of a long belt. The steam-powered machines were low-powered by today's standards but because of their size and their low gear ratios , they could provide a large drawbar pull.
The prototype steam tractor was a single-cylinder design but in 1906 a compound-cylinder version was produced, and this proved to be by far the most popular version with customers. [12] In 1908 the RAC organised a trial of competing makers' steam tractors to ascertain the best. Charles Burrell & Sons entered engine number 2932, a standard ...
1937-1948 era Oliver Model 80 agricultural tractor. The Oliver Farm Equipment Company was an American farm equipment manufacturer from the 20th century. It was formed as a result of a 1929 merger of four companies: [1]: 5 the American Seeding Machine Company of Richmond, Indiana; Oliver Chilled Plow Works of South Bend, Indiana; Hart-Parr Tractor Company of Charles City, Iowa; and Nichols and ...
The M was one of the most-widely produced of International Harvester's "letter series", with 270,140 produced over the 13-year run. The M was equipped with an International Harvester C248 inline overhead valve four-cylinder engine with a 248-cubic-inch (4,060-cubic-centimetre) displacement , and a six- volt electrical system.