Ceramic Insulator Identification

Cook porcelain insulator corp.

Ceramic insulator identification.

Link to other types of insulators. Collectors interest has been focused on some specific areas and style numbers have been created to assist in identification and cataloging styles. Today there are over 2000 collectors and insulator clubs national shows and good reference books are available. Dry process mine insulators with this marking u 98 were possibly made by american porcelain co.

Jobber of electrical supplies. In the mid 1960 s a few people began collecting these glass and porcelain 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. 2 vintage brown ceramic porcelain insulators locke thomas.

Different fonts and sizes of letters and numbers were used. Make offer 2 vintage brown ceramic porcelain insulators locke thomas thomas insulator saddle back ceramic vintage 5 22 00 8 20 shipping. Circa early 1920 s to circa 1930 cooke wilson e. Tod died in 1989 and in 1991 his wife granted permission to elton gish to assign new u numbers as new styles were reported.

Glass insulators were first produced in the 1850 s for use with telegraph lines. 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. The 55 4 is the ansi style. Collecting insulators is a fun and unique hobby that will allow you to learn much about the history and make of these unique objects.

Paul greaves spent countless hours verifying the many different fred locke markings on porcelain insulators. Click on an insulator above for more information. Found on porcelain insulators. Go back to main page.

As technology developed insulators were needed for telephone lines electric power lines and other applications. Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires. In north america glass was always the predominate material for communications insulators but porcelain has become the standard for power distribution due to its greater strength and surface resistance. Evidently the 1 to 4 line marking stamp did not securely hold the individual letters and numbers and sometimes a few letters shifted.

There are a large variety of insulators in existence.