A dump truck (or, UK, dumper
truck) is a truck
used for transporting loose material (such as sand, gravel, or dirt) for construction.
A typical dump truck is equipped with an open-box bed, which is hinged at the
rear and equipped with hydraulic pistons to lift the front, allowing the
material in the bed to be deposited ("dumped") on the ground behind
the truck at the site of delivery. In the UK and Australia the term applies to
off-road construction plant only, and the road vehicle is known as a tipper,
tipper lorry (UK) or tip truck
History
The dump truck is thought to have been first conceived in the farms of late 19th century Western Europe. As early as 1905, the first motorized dumping vehicles were developed. Such companies flourished during World War I due to massive wartime demand to grow after the war by manufacturing a number of express bodies and some smaller dump bodies that could be easily installed on either stock or converted (heavy-duty suspension & drivetrain) Model T chassis prior to 1920.The first known Canadian dump truck was developed in Saint John, New Brunswick when Robert T. Mawhinney attached a dump box to a flat bed truck in 1920. The lifting device was a winch attached to a cable that fed over sheave (pulley) mounted on a mast behind the cab. The cable was connected to the lower front end of the wooden dump box which was attached by a pivot at the back of the truck frame. The operator turned a crank to raise and lower the box. The first dump bed apparatus on a wheeled vehicle patented in Canada
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