In 1912 Bucyrus helped pioneer the use of electricity as a power source for large stripping shovels and draglines used in mining. Their "Class 14" dragline was introduced in 1911 as the first crawler mounted dragline. In 1910 Bucyrus International entered the dragline market with the purchase of manufacturing rights for the Heyworth-Newman dragline excavator. Page also invented the arched dragline bucket, a design still commonly used today by draglines from many other manufacturers, and in the 1960s pioneered an archless bucket design. In 1912 it became the Page Engineering Company, and a walking mechanism was developed a few years later, providing draglines with mobility. Page of Page Schnable Contracting for use digging the Chicago Canal. The dragline was invented in 1904 by John W. A schematic of a large dragline bucket system is shown below. By skillful manoeuvre of the hoist and the dragropes the bucket is controlled for various operations. The dragrope is used to draw the bucket assembly horizontally. The hoist rope, powered by large diesel or electric motors, supports the bucket and hoist-coupler assembly from the boom. The bucket is manoeuvred by means of a number of ropes and chains. Draglines are amongst the largest mobile equipment (not water-borne), and weigh in the vicinity of 2000 metric tonnes, though specimens weighing up to 13,000 metric tonnes have also been constructed.Ī dragline bucket system consists of a large bucket which is suspended from a boom (a large truss-like structure) with wire ropes. The larger types are used in strip-mining operations to move overburden above coal, and for tar-sand mining. In civil engineering the smaller types are used for road and port construction. "Dragline excavation systems are heavy equipment used in civil engineering and surface mining. From what we know so far there are many theorys about which dredge is the one mencioned in Skeleton Creek, but first some info about dredges (tape starts rolling)
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