Ceramic Insulator Identification

Jobber of electrical supplies.

Ceramic insulator identification.

Return to the national insulator association page. As technology developed insulators were needed for telephone lines electric power lines and other applications. Tod died in 1989 and in 1991 his wife granted permission to elton gish to assign new u numbers as new styles were reported. Make offer 2 vintage brown ceramic porcelain insulators locke thomas thomas insulator saddle back ceramic vintage 5 22 00 8 20 shipping.

The 55 4 is the ansi style. In the mid 1960 s a few people began collecting these glass and porcelain insulators. Evidently the 1 to 4 line marking stamp did not securely hold the individual letters and numbers and sometimes a few letters shifted. Cooper power systems the 99335 may be a catalog number.

Circa early 1920 s to circa 1930 cooke wilson e. 2 vintage brown ceramic porcelain insulators locke thomas. There are a large variety of insulators in existence. Collectors interest has been focused on some specific areas and style numbers have been created to assist in identification and cataloging styles.

The u chart was developed by jack tod and published in 1971 porcelain insulators guide book for collectors his 3rd edition book was published in 1988. Paul greaves spent countless hours verifying the many different fred locke markings on porcelain insulators. Cook porcelain insulator corp. Found on porcelain insulators.

Click on an insulator above for more information. Dry process mine insulators with this marking u 98 were possibly made by american porcelain co. Today there are over 2000 collectors and insulator clubs national shows and good reference books are available. For 50 years crown jewels of the wire has been the leading publication for glass and porcelain insulator hobby news history articles with columns devoted to worldwide insulators show reports in depth research articles meeting announcements photos and other insulator information.

Link to other types of insulators. Vintage insulators are most commonly made out of porcelain or glass materials and they come in a wide variety of colors and shapes making each item a unique piece that can make a great addition to a collection. Glass insulators were first produced in the 1850 s for use with telegraph lines. Go back to main page.

Collecting insulators is a fun and unique hobby that will allow you to learn much about the history and make of these unique objects.