Air Horn

Air Horn

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The air horn is a device designed to create an extremely loud noise. It is usually composed of a pressurized air source coupled to a horn through a valve which allows the device to be turned on and off. Air horns have been installed on large semi-trailer trucks, fire trucks, and some ambulances for many years. It is also used on trains as a warning device, and on ships as a signalling device.A true air horn is piped into a heavy vehicle's compressed air brake system. A cord mounted on the ceiling of the operator's cab is pulled to open the valve, supplying varying amounts of air to the horn. Thus, an outstretched hand reaching upward and pumping is a signal to the driver of an air horn equipped vehicle, requesting a toot. In modern trucks the horn is actuated by a button on the steering wheel. Some trucks have both electric and air horn, selectable by a switch on the dashboard. This is to prevent the use of the powerful air horn in populated areas.show more

Product details

  • Paperback | 156 pages
  • 152 x 229 x 9mm | 236g
  • Fer Publishing
  • United States
  • English
  • 6135687212
  • 9786135687217