Glass insulators were first produced in the 1850's for use with telegraph lines. As technology developed insulators were needed for telephone lines, electric power lines, and other applications. In the mid 1960's a few people began collecting these antique glass insulators. Today there are over 3,000 insulator collectors. Insulator clubs, local and national shows, and good reference books are available. Auctions of Vintage Insulators are available too.
Patent of the Day
Design Patent 52,341 on August 27, 1918
By Paul Mohrmann
Weathervane: Weathervane with an ear of corn attached

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Thursday, August 27, 2026
Special Events
Upcoming Insulator & Bottle Shows Shows
Insulator Show Helena Show moves to Spokane
  Medical Lake, WA Tomorrow! Fri, August 28 (2 day show) in 1 day
Insulator Show Mineral Point Insulator Show 2026
  Mineral Point, WI Sat, August 29 2 days
Insulator Show 60th Anniversary - Antique Bottle Collectors of Colorado Show
  Castle Rock, CO Sat, September 12 just over 2 weeks
Insulator Show GCIC Autumn Swap Meet
  Rochester, IN Sat, September 12 just over 2 weeks
Insulator Show WRIC 16th Annual Oktoberfest Insulator Show
  Richfield, OH Sat, September 12 just over 2 weeks
Insulator Show The Border States Antique Show & Sale
  Lawrence, KS Sat, September 19 just over 3 weeks
Insulator Show Windy Knoll Farm Insulator and Bottle Show
  Bloomingburg, NY Sat, September 19 just over 3 weeks
Insulator Show Great Northern Insulator Club show
  Freeport, MN Sat, September 26 just over 4 weeks
NIA show The 58th NIA National Show, Sale & Convention
  Lee'S Summit, MO Fri, July 9 just over 10 months
More shows
Insulator show listings courtesy National Insulator Assocation
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age 79 Today!! Thu, August 27
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