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.
Ceramic insulator identification.
There are a large variety of insulators in existence.
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 glass and porcelain insulators.
Collecting insulators is a fun and unique hobby that will allow you to learn much about the history and make of these unique objects.
2 vintage brown ceramic porcelain insulators locke thomas.
The 55 4 is the ansi style.
Evidently the 1 to 4 line marking stamp did not securely hold the individual letters and numbers and sometimes a few letters shifted.
Return to the national insulator association page.
Circa early 1920 s to circa 1930 cooke wilson e.
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.
Dry process mine insulators with this marking u 98 were possibly made by american porcelain co.
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.
Jobber of electrical supplies.
Cooper power systems the 99335 may be a catalog number.
Click on an insulator above for more information.
Paul greaves spent countless hours verifying the many different fred locke markings on porcelain insulators.
Link to other types of insulators.
Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires.
Cook porcelain insulator corp.
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.
Today there are over 2000 collectors and insulator clubs national shows and good reference books are available.
Make offer 2 vintage brown ceramic porcelain insulators locke thomas thomas insulator saddle back ceramic vintage 5 22 00 8 20 shipping.
Found on porcelain insulators.
