Flushing Streets with Water Pipes on Trolley Cars
IN Worcester and Springfield, Mass., the day of horse-and-wagon street flushing is past. Trolley cars carrying large water-tanks and electric pumps have been found much more effective and considerably more rapid. The pumps force the water out in such powerful streams that the trolley-car method has proved itself cleaner than the horse-drawn barrel-wagon from which the water flowed by gravity.
The pump supplies water to four pipes. Two of these lead to nozzles on the car itself and two lead to an arm which swings on the road-side of the car. This arm is swung back when automobiles or other obstructions are to be passed.
The flushing is done early in the morning after the cars have first gone the rounds in sprinkling the streets. The cars run at high speed so that an entire city can be cleaned by a very few of them in a very short time. With the old horse-and-wagon method speed was impossible. Sometimes the sprinkling had to be started during the night.
The added expense of the electric pump is balanced by the saving in the number of units and of men, so that the running expense of the new method is not increased. On the other hand, only eighty-five per cent of the water formerly used is now required. The side streets which are not tracked are now flushed by connecting long hose to the street hydrants.