Wigwag (railroad)
http://dbpedia.org/resource/Wigwag_(railroad) an entity of type: Person
Wigwag is a nickname for a type of railroad grade crossing signal once common in North America, referring to its pendulum-like motion that signaled the approach of a train. The device is generally credited to Albert Hunt, a mechanical engineer at Southern California's Pacific Electric (PE) interurban streetcar railroad, who invented it in 1909 for safer railroad grade crossings. The term should not be confused with its usage in Britain, where "wigwag" generally refers to alternate flashing lights, such as those found at modern level crossings.
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Wigwag (railroad)
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534407
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Two examples of WRRS Autoflag #5 "center harp" wigwag signals, : on a CN&W crossing in Wisconsin, July 1982. : on Devil's Lake, Wisconsin, September 2005. These signals were retired in 2012.
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Two types of wigwag by Magnetic Signal Co.: lower quadrant and upper quadrant , from a company catalog of 1922
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Magnetic lower quadrant.jpg
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Magnetic wigwag upper quadrant.jpg
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CNW_4142_and_4336__in_July_1982_.jpg
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Wigwag signals near Devil's Lake.jpg
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Wigwag is a nickname for a type of railroad grade crossing signal once common in North America, referring to its pendulum-like motion that signaled the approach of a train. The device is generally credited to Albert Hunt, a mechanical engineer at Southern California's Pacific Electric (PE) interurban streetcar railroad, who invented it in 1909 for safer railroad grade crossings. The term should not be confused with its usage in Britain, where "wigwag" generally refers to alternate flashing lights, such as those found at modern level crossings.
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