Vintage Glass Insulators / Hemingray No. 10 CD 115 (Set of Three) $ 15

Glass insulators were first produced in the 1850s as a means of fastening wires to electricity poles, glass efficient in reducing electric current loss on early telephone and later telegraph lines. Bubbling and roughness are signs of early molding. Most insulators are from 1875-1930 however, when hundreds of millions were made. Light blue and transparent glass in beehive shapes were the most popular. Our mother placed her collection on the windowsill to reflect the afternoon sun. Others use them as paperweights, bookends, decor, lightbulb holders, etc.
 
We identified the number and CD of these three pieces using hemingway.info which states, “The Hemingray No.10 is a common style known as an exchange line insulator. Around 1914, the practice of using twisted wire pairs instead of two drop-wires created the need for this style. The wire grooves are close together to accommodate the twisted wire pair.” 
 
Below is the text embossed on the front and back of each insulator in this set as well as measurements(from left to right as shown in photos)
 
1. Green Aqua Glass / HEMINGRAY / PATENTED MAY 2 1893
H 3 ¼” x Diameter 2 3/8” Condition: Very good
 
2. Green Aqua Glass / HEMINGRAY / No 10 
H 3 1/8” x D 2 3/8”. Condition: Very good
 
3. Light Aqua Glass / HEMINGRAY_10 / MADE IN U.S.A.
H 3/18” x D 2 3/8”. Condition: A few chips in the bottom
 
All three are extremely common according to hemingray.info, date from 1914-1950s, and have sharp drop points on the bottom.
 
Disclaimer: We have tried to make sure colors shown in photos are representative of the real colors of each item. We have tried to identify all imperfections in descriptions, but we may have missed some. If you are unhappy with your purchase, let us know.