Street sweeper
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- For the semi-automatic shotgun known as the Street Sweeper, see Armsel Striker also known as the DAO-12.
A street sweeper or streetsweeper is a person or machine that cleans streets, usually in an urban area.
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[edit] Urban job
Street sweepers have been employed in cities since sanitation and waste removal became a priority. A street-sweeping person would use a broom and shovel to clean off litter, animal waste and filth that accumulated on streets. Later water hoses were used to wash the streets.
[edit] Mechanized sweeping
The first mechanical street sweeper invented was invented by C.S. Bishop, patented on September 4, 1849. U.S. Patent 6,699 A mechanical street-sweeper is mounted with several rotating disks and/or drums covered in stiff wire bristles.
[edit] Modern sweepers
Modern street sweepers are equipped with water tanks and sprayers used to loosen particles and reduce dust. The brooms gather debris into a main collection area from which it is vacuumed and pumped into a collection bin.
A regenerative air street sweeper uses forced air to create a swirling knifing effect inside a contained sweeping head and then uses the negative pressure on the suction side to place the road debris inside a containment hopper. The debris laden air is then cleaned and reused to start the process anew. Many regenerative air sweepers are AQMD certified and can pick up particles as small as 10 micrometres or less (PM-10), a leading cause of stormwater pollution.
 A Canadian Madvac compact streetsweeper in Mexico City Paseo de la Reforma |
 A compact streetsweeper in Mexico City Downtown |
 An Italian Dulevo streetsweeper in St Peter's Square |
 Vegetable oil (Pflanzenöl) powered vacuum cleaner truck (Laubsauger - "leaf sucker") which can suck up dry litter and dry fallen leaves. Aachen, Germany, autumn 2005 |
 A street sweeping machine (an Elgin Pelican) in Cambridge, Massachusetts, USA. |
 Single-engine Scarab Sweepers street sweeper in the pictured at the Dubai Autodrome, November 2006 |
One of the most notable sweeper companies still around to day is Elgin sweepers. In 1914 Boise, Idaho bought the first Elgin Sweeper. This was the first three wheel broom sweeper. This later developed into the Elgin 81, which then developed into the Elgin Street King, then into the White Wing and finally the Pelican. The Elgin Sweeper Company was many types of street sweepers. A few of them are the Crosswind,Crosswind Fury, Crosswind FSX, Whirlwind, GeoVac, Broom Bear,Eagle, Road Wizard,Pelican, and the GRV. Elgin is a subsidiary of Federal Signal Corporation.
[edit] References
[edit] External links
Diagrams of several Street sweepers including Pat no. 6699
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