How do you date glass insulators?
All dots around the year code should be counted (a colon counts as two dots), and added to the date of mold manufacture. This gives the actual date the insulator was produced. Style 3 is the most common.
What is a Hemingray glass insulator?
Hemingray Glass Company. The Hemingray 42, a telegraph pin insulator produced by the Hemingray Glass Company, is widely found in North America. Formerly. Gray & Hemingray. Gray, Hemingray & Bros.
Why are glass insulators different colors?
In insulator circles, anything not clear or aqua is considered colored. Aqua and clear were the default colors. Because of the iron content in the glass, most of the insulators came out a little green, that’s the typical aqua color you see and it’s very common. That’s why you get fancy colors sometimes.
How old is a Hemingray insulator?
The earliest Hemingray insulators are likely lightning rod insulators from the late 1850’s. The last Hemingray insulator was made in 1967. Over the 100+ years of production, they made billions of insulators, in-fact in 1937 they had made there billionth Hemingray insulator!
What type of insulator is cdcd 162 honey amber Hemingray 19?
CD 162 Honey Amber HEMINGRAY – 19 Antique Glass Telegraph Insulator! L55-06 Insulators were first developed in the mid-1800s to be used on telegraph and telephone lines to contain the electrical current and prevent the current from entering the ground below.
What colors do glass insulators come in?
Glass insulators come in a wide array of colors, from clear and light aqua glass to deep orange and green glass. They come in a variety of colors because they were made by many different glass companies that used different glass materials for various things.
Why is glass a good insulator?
Glass is a good insulator because this material doesnt conduct electricity or heat due to the tightly bound electrons. Because of the composition of this material, electrons are not able to move freely and transfer current between one another.