Hemingray Glass Co., incorporated in 1870, operated factories in Kentucky and Indiana and was one of the leading insulator manufacturers in the U.S. Hemingray also manufactured other glass items like bottles, fruit jars, kerosene lamps, and tableware. The company was sold to Owens-Illinois Glass Co. in 1933.
Insulators were originally made to keep telegraph and telephone wires electrically insulated from wooden telephone poles (especially important in the rain). Made from glass or porcelain, in a dazzling array of shapes and colors (e.g. amber, cobalt blue, green, purple), they’re prized for color, beauty, and rarity. Collectors identify insulators by manufacturer (e.g. Hemingray) and by CD numbers, which are based on shape.
For an explosion of color and a quick education on the many beautiful varieties of insulators, blown glass bricks, … [more]
Christian Willis' well-organized database of Hemingray insulators. Browse over 300 photos by CD number, style, or s… [more]
Bill Meier's reference site by and for insulator collectors includes event listings, reference information, photo g… [more]
Shaun Kotlarsky's tribute to the Hemingray Glass Company. While known for its insulators, this site also showcases … [more]
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