2 vintage brown ceramic porcelain insulators locke thomas.
Ceramic insulator identification.
Evidently the 1 to 4 line marking stamp did not securely hold the individual letters and numbers and sometimes a few letters shifted.
Collecting insulators is a fun and unique hobby that will allow you to learn much about the history and make of these unique objects.
Tod died in 1989 and in 1991 his wife granted permission to elton gish to assign new u numbers as new styles were reported.
Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires.
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.
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.
There are a large variety of insulators in existence.
Dry process mine insulators with this marking u 98 were possibly made by american porcelain co.
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Link to other types of insulators.
Jobber of electrical supplies.
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.
Found on porcelain insulators.
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.
Different fonts and sizes of letters and numbers were used.
The 55 4 is the ansi style.
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.
Click on an insulator above for more information.
Cooper power systems the 99335 may be a catalog number.
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.
Paul greaves spent countless hours verifying the many different fred locke markings on porcelain insulators.
Make offer 2 vintage brown ceramic porcelain insulators locke thomas thomas insulator saddle back ceramic vintage 5 22 00 8 20 shipping.
