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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 ...
Euclid made thousands of off-road haulers and scrapers. Improved and larger designs helped it become a significant international corporation by the early 1950s. In 1950, a separate UK-based company, Euclid Great Britain, was established. A factory specialising in off-road haulers was opened in Motherwell, Scotland. [3]
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.
Benjamin Holt attempted to fix the problem by increasing the size and width of the wheels up to 7.5 feet (2.3 m) tall and 6 feet (1.8 m) wide, producing a tractor 46 feet (14 m) wide, but this also made the tractors increasingly complex, expensive, and difficult to maintain.
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Porteous bought the patents held by Deidrick, Dusy, and McCall, gaining sole rights to the Fresno Scraper. Prior scrapers pushed the soil ahead of them, while the Fresno scraper lifted it into a C-shaped bowl where it could be dragged along with much less friction. By lifting the handle, the operator could cause the scraper to bite deeper.
The largest Sanmai III fixed blades are made by Hattori. Seki City production knives are made using VG1 stainless steel and VG1 core Sanmai III. Current and past models have used: German 4116 stainless steel, D2, 1055 high carbon steel, O-1 high carbon, SK-5 carbon steel, AUS 8A & 10A, CTS XHP, CPM S35VN, and CPM 3V tool steel.
Techtronic Industries Company Limited (TTI Group or TTI) is a Hong Kong–based multinational company that designs, produces, and markets power tools, outdoor power equipment, hand tools, and floor care appliances.