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An automatic lamp changer (or lampchanger) is a device used to ensure that a navigational light such as a marine lighthouse or aero beacon stays lit even if a bulb burns out. Numerous types exist. The common design elements are an array of two or more lamps (or bulbs), installed on a mounting which can rotate to various positions.
The surveys revealed that high-mast lighting was by far the preferred method of lighting. [3] By 1967, Europe was known to have high-mast illumination technology in practice. 1968 saw the first permanent US installations of high-mast illumination starting in Auburn, Washington south of Seattle. The first American towers were 100 ft (30 m) tall ...
A new keeper's house, barn and oil house were built to service the new location. In the 1930s the light was electrified and the keeper's house was sold. A 250 watt bulb was mounted in an automatic bulb changer that moved a fresh bulb into position if one burned out. The light shines from a 4-foot (1.2 m) square window aligned with the range. [5]
Original pole. Voltages used for electric power transmission increased throughout the 20th century. [50] The first "high voltage" AC power station, rated 4-MW 10-kV 85-Hz, was put into service in 1889 by Sebastian Ziani de Ferranti at Deptford, London. [33] The first electric power transmission line in North America operated at 4000 V.
The center bulb may be very high power (often a three-way, 100-200-300 watt bulb), where the others are usually 60 watts or less. Some models have a night light in the base operated by a foot switch. One model turns the current light settings on or off by moving the lamp pole up or down.
[4] [5] Replacement of the beacon bulb at the top of the digital tower was featured in an episode of World's Toughest Fixes in 2010. [6] In 2015, amateur drone video footage of a man changing the light bulb on the analog tower went viral attracting more than 19 million views on YouTube and garnering attention from CNN and a newspaper in Britain.