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Ruston-Bucyrus
Ruston-Bucyrus Ltd was an engineering company established in 1930 and jointly owned by Ruston & Hornsby based in Lincoln, England, and Bucyrus-Erie based in South Milwaukee, Wisconsin, the latter of which had operational control and into which the excavator manufacturing operation of Ruston & Hornsby was transferred. The Bucyrus company proper, from which the Bucyrus component of the Ruston-Bucyrus name was created, was an American company founded in 1880, in Bucyrus, Ohio.
During the Second World War, the company developed a trench-cutting machine known by the code name Cultivator No. 6 at the behest of Winston Churchill.
A limited company, Ruston-Bucyrus Ltd., was formed in 2005, by Paul and Frank Murray (Brothers) as co-directors. This has no ties to RB Cranes which holds all of the original machine information and drawings.
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. In addition, there were the large machines including the 110RB which evolved into the 150RB.
The 22RB was the most popular machine which was assembled on a production line basis.
The machine concept was a standard base to each model on which optional front-end equipment could be mounted with appropriate counterbalances, crawler track frames and minimal additional machinery. The most common variants included face shovel, dragline, lifting crane, and grabbing crane. Less common variants included drag shovel, skimmer and pile driver. Some cranes were also lorry-mounted. All machines had 360 degree rotation on a conical section roller path.
The machines were operated initially by a system of levers which operated toggle clutches into the drumshafts. Despite the significant power being transmitted, the lever system was, if set up correctly, relatively easy for the operator to use. The main control functions were later superseded by pneumatic control.
Most machines were fitted with diesel engines. The 22RB, typically, used a 6YDA Ruston & Hornsby engine. Electric motor options were available and often used on the large machines.
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Ruston-Bucyrus
Ruston-Bucyrus Ltd was an engineering company established in 1930 and jointly owned by Ruston & Hornsby based in Lincoln, England, and Bucyrus-Erie based in South Milwaukee, Wisconsin, the latter of which had operational control and into which the excavator manufacturing operation of Ruston & Hornsby was transferred. The Bucyrus company proper, from which the Bucyrus component of the Ruston-Bucyrus name was created, was an American company founded in 1880, in Bucyrus, Ohio.
During the Second World War, the company developed a trench-cutting machine known by the code name Cultivator No. 6 at the behest of Winston Churchill.
A limited company, Ruston-Bucyrus Ltd., was formed in 2005, by Paul and Frank Murray (Brothers) as co-directors. This has no ties to RB Cranes which holds all of the original machine information and drawings.
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. In addition, there were the large machines including the 110RB which evolved into the 150RB.
The 22RB was the most popular machine which was assembled on a production line basis.
The machine concept was a standard base to each model on which optional front-end equipment could be mounted with appropriate counterbalances, crawler track frames and minimal additional machinery. The most common variants included face shovel, dragline, lifting crane, and grabbing crane. Less common variants included drag shovel, skimmer and pile driver. Some cranes were also lorry-mounted. All machines had 360 degree rotation on a conical section roller path.
The machines were operated initially by a system of levers which operated toggle clutches into the drumshafts. Despite the significant power being transmitted, the lever system was, if set up correctly, relatively easy for the operator to use. The main control functions were later superseded by pneumatic control.
Most machines were fitted with diesel engines. The 22RB, typically, used a 6YDA Ruston & Hornsby engine. Electric motor options were available and often used on the large machines.
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