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By the early 1930s hydraulics were standard on all motor graders. An example of a 1922 "Galion Patrol" is shown here. In 1922, Galion was one of the first to develop a self-propelled motor grader. The tractor engine and transmission were located in the rear of the frame, and the operator cockpit was located near the center of the machine.
When the hopper is full (8 to 34 m 3 or 10 to 44 cu yd heaped, depending on type) it is raised, and closed with a vertical blade (known as the apron). The scraper can transport its load to the fill area where the blade is raised, the back panel of the hopper, or the ejector, is hydraulically pushed forward and the load tumbles out.
Caterpillar's line of machines range from tracked tractors to hydraulic excavators, backhoe loaders, motor graders, off-highway trucks, wheel loaders, agricultural tractors, and locomotives. Caterpillar machinery is used in the construction, road-building , mining, forestry , energy, transportation, and material-handling industries.
For 1955 in IH tractors, the numbered "hundred series" was offered. Although given slightly different styling and few new features, they were still updates to the models introduced in 1939. The only new tractor in the 1955 lineup was the 300 Utility. In 1957 power was increased in some models and the 230 Utility was introduced. [20]
The 4240, 4440, 4640, and 4840 featured a new 466-cubic-inch displacement engine, and improvements to the cab including an optional hydraulic seat for a smoother ride. The Sound Gard body and 8-speed Power Shift transmission were standard equipment on the 4840. In 1983, Deere introduced the 4050, 4250, 4450, 4650, and 4850.
In 2006, MTD began building lawn equipment under the fmc brand for sale in Europe. In 2007, MTD began building the low-end lawn and garden tractors for its otherwise competitor, Toro. In 2008, MTD began having a third-party company (located in China) manufacture a new line of engines for the Craftsman 2008 line of snowthrowers.
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