thomas. Backhoe. June 04th , 2018.
The American company Hy-Dynamic a division of Bucyrus-Erie introduced the second purpose-built American-made backhoe loader in 1959 the Dynahoe Model A. It offered a 14000 lb. operating weight 14-foot dig depth and was powered by either a 65 hp Continental flat-head "Red Seal" 6-cylinder gasoline engine or starting in 1961 a Detroit Diesel 353 diesel engine. The gasoline engine was phased out in 1964 with only diesel-powered units produced from that point on. The company marketed the Dynahoe as the only purpose-built backhoe-loader; previously all American backhoes were merely farm tractors fitted with front loader and rear backhoe attachments. The Dynahoe was built very robustly from the ground up with heavy excavation in mind. Production of the Dynahoe continued into the early 1990s culminating in the model Dynahoe 200-4 with a 36000 lb. operating weight 4-wheel drive and a 20-foot dig depth. Production ceased with demand wavering in favor of more modern and versatile excavator type machines becoming more cost effective and productive. Many of the original Dynahoe Model As are still in use to this day.
Because of the long-time predominance of the JCB marque in the United Kingdom and Ireland it has become a genericized trademark there and backhoe-equipped diggers are commonly called JCBs while the term "backhoe" as an excavator component is almost unknown to the general public in this context. The founder of the JCB company Joseph Cyril Bamford holds the honour of being the only non-American in the U.S. construction industrys hall of fame.
Sometimes a backhoe bucket is reversed to work in a power shovel configuration. This is generally when loading from a large stockpile for picking up or filling material next to walls to increase the reach of the machine or working around obstacles such as pipes.2
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