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| Chicago CTA 'L' Sleet/Ice/Snow Mechanisms (Photos) (1273821) | |||
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Chicago CTA 'L' Sleet/Ice/Snow Mechanisms (Photos) |
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Posted by ChicagoPCCLCars on Thu Feb 6 12:21:14 2014 Chicago's 2013-14 winter record has been a test for the sleet/ice/snow mechanisms, including the sleet scrapers on the trucks and the antifreeze solution (paste) applied to the third rail. All CTA cars have 8 manually operated sleet devices on each two pairs of cars. These devices can be operated by the operator or by yard personnel at terminals. One or two trains on a line would apply antifreeze.The CTA of course operates an open third rail.... traces back to the 1892 World's Fair Columbian Exposition. The gravity trolley pickups were first used in England. The devices would not work if a covered third rail is used. The sleet scraper devices are mounted on the ends of the trolley blocks, raised or lowered by inserting a wooden handle. The sleet scrapers are electrically connected in the 600 v. circuit.  
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