
Hemingray Glass Telephone/Telegraph Insulator
This is a vintage aqua green molded glass electrical insulator, likely manufactured by the Hemingray Glass Company. The item features a classic 'pony' or 'beehive' profile with multiple tiered petticoats designed to shed water and prevent electrical leakage. It is constructed from thick, heavy soda-lime glass, characterized by its translucent teal-blue hue. Visible around the bottom circular base is the embossed text 'MADE IN U.S.A.', a common identifier for mid-20th-century utility glass. The top of the insulator has a rounded dome and a deep wire groove designed for securing telegraph or telephone lines. In terms of condition, there is a visible impact bruise or flake on the top dome, as well as minor surface scuffing throughout. The internal threading appears intact. Small air bubbles, or 'seed' bubbles, are visible within the glass, which are typical manufacturing artifacts of the era, likely dating from the 1920s to the 1950s. The base displays 'drip points' or nibs (not fully visible from this top-down angle but typical of the Hemingray process) which were designed to help moisture drop away more efficiently. The glass shows some 'orange peel' texture and light soot or dirt accumulation typical for a found utility object.
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Estimated Value
$5.00 - $12.00
Basic Information
Category
Utility Antiques / Glassware
Appraised On
April 20, 2026
Estimated Value
$5.00 - $12.00
Item Description
This is a vintage aqua green molded glass electrical insulator, likely manufactured by the Hemingray Glass Company. The item features a classic 'pony' or 'beehive' profile with multiple tiered petticoats designed to shed water and prevent electrical leakage. It is constructed from thick, heavy soda-lime glass, characterized by its translucent teal-blue hue. Visible around the bottom circular base is the embossed text 'MADE IN U.S.A.', a common identifier for mid-20th-century utility glass. The top of the insulator has a rounded dome and a deep wire groove designed for securing telegraph or telephone lines. In terms of condition, there is a visible impact bruise or flake on the top dome, as well as minor surface scuffing throughout. The internal threading appears intact. Small air bubbles, or 'seed' bubbles, are visible within the glass, which are typical manufacturing artifacts of the era, likely dating from the 1920s to the 1950s. The base displays 'drip points' or nibs (not fully visible from this top-down angle but typical of the Hemingray process) which were designed to help moisture drop away more efficiently. The glass shows some 'orange peel' texture and light soot or dirt accumulation typical for a found utility object.
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