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The push-pull attachment allows two individual scrapers to act as a self-loading system, typically loading both machines in less than a minute, one after the other. Auger: uses vertically mounted auger in the bowl to pull material upwards. Pull type scraper: uses agricultural tractor, articulated dump truck, or bulldozer to pull.
Euclid truck in use at Chuquicamata copper mine in 1984 Euclid truck at a quarry in Poland (2013) The Euclid Trucks was a manufacturer which specialized in heavy equipment for earthmoving, particularly dump trucks, loaders and wheel tractor-scrapers. It operated in the United States from the 1920s to the 1950s, when it was purchased by General ...
The Fresno scraper is a machine pulled by horses used for constructing canals and ditches in sandy soil. The design of the Fresno scraper forms the basis of most modern earthmoving scrapers , having the ability to scrape and move a quantity of soil, and also to discharge it at a controlled depth, thus quadrupling the volume which could be ...
The hydrostatic drive may have been a contributing factor in abandoning the project. Changes in the way earthmoving is done, including the use of excavators and dumptrucks, has also eroded the market for scrapers. Therefore, this machine exhibited many revolutionary design concepts but was probably too costly to put into production in a ...
A History of R.G. LeTourneau's Earliest Scrapers: Culminating in the 1922 Mountain Mover (PDF). S2CID 162762371. Archived from the original (PDF) on 2019-08-01. LeTourneau, R.G. Mover of Men and Mountains, Autobiography (Prentice-Hall 1960, 1967; Reprint Moody Press 1967, 1972), ISBN 0-8024-3818-0
In May of 1921, he purchased a plot of land in Stockton, California, and established a small engineering workshop, where he designed and built several types of scrapers. Combining contracting and earthmoving equipment manufacturing, his business soon began to expand and, in 1929, ...were incorporated in California as R. G. LeTourneau, Inc. [ 5 ...
A blade forward of the front axle may also be added. For snowplowing and some dirt grading operations, a main blade extension can also be mounted. Capacities range from a blade width of 2.50 to 7.30 m (8 to 24 ft) and engines from 93–373 kW (125–500 hp). Certain graders can operate multiple attachments, or be designed for specialized tasks ...
Caterpillar 740 Ejector going up an incline Articulated hauler dump truck video. An articulated hauler, articulated dump truck (ADT), or sometimes a dump hauler, is a very large heavy-duty type of dump truck used to transport loads over rough terrain, and occasionally on public roads.