MODERN METHODS OF STREET CLEANING 



side. Similar sprinkling devices are often used on 

 municipal street cars in Germany to sprinkle the streets 

 on each side of the tracks. 



There is little of special interest about the sweep- 

 ing-machines. The best practice seems to favor the 

 use of four-wheeled sweepers with springs and arrange- 

 ments for two horses, although in some of the largest 

 cities, excellent work is done by two-wheeled rotary 

 sweepers with one horse. Practically every large city 

 uses horse-propelled sweepers on some streets. 



Horse-propelled squeegees are commonly employed 

 for asphalt and wood, either in combination with 

 sweeping-machines or sprinkling-carts, or separately. 

 A new machine frequently used consists of a watering 

 cart to the rear of which is attached a drum revolving 

 like a rotary sweeper, but provided with rubber squee- 

 gees arranged spirally around the drum. This machine 

 is particularly useful on smooth pavements, but seems 

 to offer few advantages over squeegees built like road 

 scrapers. The latter are much cheaper to buy and 

 keep in repair. The horses used in Europe are gen- 

 erally excellent. 



Motors are used in several cities, particularly 

 where the pavements are good and the amount of 

 cleaning large. The motors are, for the most part, 

 little else than traction engines fitted at pleasure with 

 removable cart bodies and water tanks with sprinkling 

 apparatus. In most cases interchangeable bodies are 

 provided so that at night the motor can be used for 

 street sprinkling, and in the day for other purposes. 



Economy in the use of these motors is considered 

 to depend upon being able to employ them day and 

 night. In this case only are motors cheaper than 



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