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
Utility Patent 588,048 on August 10, 1897
By George Ashby
Knob: Knob with grooves and bracket

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Monday, August 10, 2026
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Upcoming Insulator & Bottle Shows Shows
Insulator Show Jefferson State Insulator Club's Annual Tailgater
  Bend, OR Fri, August 14 (2 day show) 4 days
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Insulator show listings courtesy National Insulator Assocation
Happy Birthday!
age 85 Today!! Mon, August 10
age 80 Today!! Mon, August 10
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