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The compositions of the liquid in a storm glass varies but usually contains "camphor, nitrate of potassium and sal-ammoniac, dissolved by alcohol, with water and some air." These devices are now known to have little value in weather prediction but continue to be a curiosity.
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If fixed, undisturbed, in free air, not exposed to radiation, fire, or sun, but in the ordinary light of a well-ventilated room or outer air, the chemical mixture in a so-called storm-glass varies in character with the direction of the wind, not its force, specially (though it may so vary in appearance only) from another cause, electrical tension. The inventor is unknown but the device became popular in the 1860s after being promoted by Admiral Robert FitzRoy who claimed that The state of crystallization within the liquid was believed to be related to the weather. It consists of a special liquid placed inside a sealed transparent glass.
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When choosing an antique weather vane or lightning rod for your needs, eBay has several categories that can make your choices easier. How do you select weather vanes and lightning rods on eBay? They are a method of lightning protection that directs electrical currents through it and down into the ground, where the electricity is less likely to cause damage to structures or danger to people. A lightning rod's job is to act as a conductor when lighting strikes. The rod stands on a metal base that usually has two to four legs. Near the bottom of the structure is a glass ball that can be very plain or made of colored glass. The very top ends at a point that is attached to a metal rod. When lightning rods are separate from weather vanes, they have five parts, including the cable that runs to the ground. What styles of lightning rods are available? Washburne & Co: After starting out with the molds from Max Weber, this Massachusetts company became a popular brand. Mott: This company is best known for its Indian ornamentation that many farmers used to show that they had purchased the property from an Indian. After an accident killed A.L., this company became Cushing and Sons who were known for their patriotic ornamentation done in copper. Jewell & Co: Maker of highly stylized copper instruments in Massachusetts, this company was the first to offer commissioned weather vanes. Howard & Co: Owned by three generations of the Howard family in Massachusetts, this company made cast zinc instruments. Fiske Works: This company started by Joseph Winn Fiske in Boston before moving to New York City created many cast iron and hammered copper examples showcasing naturalistic foliage. There were many different makers of weather vanes that collectors prize today, including: What brands of weathervanes are available on eBay?Įarly settlers to the United States brought weather vanes and lightning rods at general stores or ordered them from mail-order catalogs after 1850, although those made before that time were usually made in the local community. The aging of a metal instrument is called patina, and it is almost always more noticeable on one side than the other. Any decorations added to the instrument are called ornaments, and the circle below the directionals is called the globe. The rod holding everything together is called the mast or spire, while the letters pointing to the directions are called the directionals. How does a weather vane work?Ī weather vane is an ancient instrument that is attached to the highest point of a building's roof to tell the direction of the wind. If you are starting to think about collecting weather vanes or lightning rods, then you may be able to find just the right antique weathervane on eBay at an affordable price. After Deacon Shem Drowne started making them in the Boston area, almost every home in Colonial America had one that was made out of a material like copper, iron, zinc, aluminum or wood. The first weather vanes were made by the ancient Greeks, but it was not until after Benjamin Franklin became fascinated with lightning that the first lightning rods were used. A Quick Guite to Antique Weather Vanes and Lightning Rods
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