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A grader, also commonly referred to as a road grader, motor grader, or simply blade, is a form of heavy equipment with a long blade used to create a flat surface during grading. Although the earliest models were towed behind horses, and later tractors , most modern graders are self-propelled and thus technically "motor graders".
The motor grader line received the first power-shift transmission, which was a major advance, in 1955. Called the Galion Grade-O-Matic drive, it utilized a torque converter, output shaft governor and power-shift transmission, providing simple two-lever control of speed and direction. The Galion T-700 garnered the world's largest grader title in ...
Section through railway track and foundation showing the sub-grade. Grading in civil engineering and landscape architectural construction is the work of ensuring a level base, or one with a specified slope, [1] for a construction work such as a foundation, the base course for a road or a railway, or landscape and garden improvements, or surface drainage.
Adams Leaning Wheel grader no.21, outside the original offices the Nungarin roadboard 1910 company catalog, image of Road King No. 12. J.D. Adams & Company was founded in 1885 by Joseph D Adams who invented the first leaning-wheel pull grader and was based in Indianapolis. The company manufactured construction machinery including sheepsfoot ...
As of May 2017, according to Trade Arabia, Case "sells a full line of construction equipment around the world, including the number one loader/backhoes, excavators, motor graders, wheel loaders, vibratory compaction rollers, crawler dozers, skid steers, compact track loaders and rough-terrain forklifts." [12]
David Ward King, Inventor of the King Road Drag Contemporary Drawing of the King Road Drag Road Drag Patent. The King road drag (also known as the Missouri road drag and the split log road drag) was a simple form of a road grader implemented for grading dirt road. It revolutionized the maintenance of dirt roads in the early 1900s.
Manufacturing since 1875 Edwards began with road graders, [1] and other manufacturing equipment such as the stump puller, Manual Shears, and Intake Grates.
The steepest grade for bus operations is 23.1% by the 67-Bernal Heights on Alabama Street between Ripley and Esmeralda Streets. [12] Likewise, the Pittsburgh Department of Engineering and Construction recorded a grade of 37% (20°) for Canton Avenue. [13] The street has formed part of a bicycle race since 1983. [14]