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The history of crawler excavators can be traced back to the late 19th century, with the invention of the steam shovel in 1796. However, it wasn't until the 1830s that the first patented excavator with a mechanical boom, the Otis steam excavator, was developed.
For example, Caterpillar's smallest mini-excavator weighs 2,060 pounds (930 kg) and has 13 hp; [8] their largest model is the largest excavator available (developed and produced by the Orenstein & Koppel, Germany, until the takeover 2011 by Caterpillar, named »RH400«), the CAT 6090, which weighs in excess of 2,160,510 pounds (979,990 kg), has ...
2017: At Conexpo-Con/Agg 2017 Case released the CX750D excavator. [ 11 ] 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 ...
By 1922, Link-Belt expanded into this crawler-mounted crane-shovel excavator market, complementing its locomotive cranes and material handling equipment. As the rail-based market shrank, Link-Belt's crawler-mounted line continued to grow. By the late 1930s, Link-Belt offered excavators ranging from a 3/4-yd to a 2-1/5-yd capacity.
305M Crawler Dragline Marion Power Shovel Company was an American firm that designed, manufactured and sold steam shovels , power shovels , blast hole drills , excavators , and dragline excavators for use in the construction and mining industries.
Gradually Universal Excavators designed by Bucyrus-Erie replaced Ruston & Hornsby designed models. The original range of standardised rope-operated machines included 10RB, 17RB, 19RB, and 33RB and were upgraded through some intermediate models including the 54RB to a main selling range in the 1960s of 22RB, 30RB, 38RB, 61RB, and 71RB.
The company started as iron founders in 1794 and expanded in Victorian times to include coal and iron mining. They diversified into equipment manufacture and in 1947 the company started producing the American brands of Koehring excavators under the Newton Chambers Koehring name, [2] and in 1958 they took over Ransomes & Rapier building excavators, drag-lines, port cranes and other construction ...
The company changed its name to Bucyrus-Erie in 1927 when it merged with the Erie Steam Shovel Company, the country's leading manufacturer of small excavators at that time. [citation needed] In 1930 Bucyrus joined with Ruston & Hornsby Ltd Lincoln, England, forming the Ruston-Bucyrus Ltd firm in England. Ruston & Hornsby Ltd were the pre ...