Vintage Glass Insulator”Hemingray blue”

AI Overview +2 The image shows a vintage Hemingray-42 clear glass insulator. Manufacturer: Hemingray, a prominent manufacturer of glass insulators. Model: No. 42, a double petticoat type designed for electrical insulation, especially for telephone construction. Features: It has a long, smooth leakage path on the inner petticoat and a modern square wire groove. Origin: "MADE IN U.S.A." is embossed on the base, indicating its country of manufacture. Historical Significance: Hemingray produced billions of insulators over more than a century, with the last one made in 1967