Collectibles--General (Modern)/Expert Profile


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Expertise

Questions related to collecting Glass Insulators and porcelain insulators - I can provide historical information as well as current collector values. I am also interested in purchasing insulators I need for my collection.

Experience in the area

I have collected since the early 1970's and have much historical information, as well as knowledge of current insulator values.

Organizations

National Insulator Association (http://www.nia.org)

Education/Credentials

BS & MS in Electrical Engineering

What do you like about this subject?

Insulators date back to the 1840's for Telegraph, 1870's for Telephone, and 1890's for electrical transmission. There is a tremendous amount of history represented by these everyday objects!

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Recent Answers from Bob Berry

2016-11-02 Armstrong Glass Insulator:

I would assume your Armstrong No. 3 insulator is in clear glass.  The Armstrong cork company bought out the Whitall Tatum glass company in the 1940s and made insulators through the 1950s.  We identify

2016-09-18 Hemingray:

Thanks for your question.  We identify your Hemingray No. 12 as a CD 113.  It is a telephone insulator and is an exchange style which supports two wire grooves. These were made by Hemingray glass (based

2016-06-30 insulator:

GLADCO confirms is it likely an insulator -- this is similar to rests for heavy insulated cables.  The color is called skyglaze and it typical on modern insulators.  GLADCO stands for Gladding Ceramic

2016-06-30 insulator:

This could be some form of a cable holder, but I'm not sure this is an insulator.  What is the marking stamped on the top?  Where did you find this item?          Thanks, --Bob

2016-04-05 Dominion - 42 cd 155 red black?:

Thanks --    Yes the 154 style was earlier and comes in some great colors!  Here is a link to some examples.      http://www.insulators.info/pictures/?id=239683205    When the style was upgraded to the

 

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