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.
Patent of the Day
Utility Patent 1,556,440 on October 6, 1925
By Robert L. Hibbard
Press: Press for forming threads in porcelain insulators and to prevent damaging the threaded pinhole once formed

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Sunday, October 6, 2024
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Insulator & Bottle Shows in the next 60 days
Insulator Show 5th annual GCSIC Fall Meet Up
  Mayer, AZ Today! Sun, October 6  
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  Garland, TX Sat, October 19 in 13 days
Insulator Show 54th MID-OHIO Insulator Show
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