Insulators. Hemingray was best known for producing telegraph and telephone pin insulators used on utility poles.
How do you date an old insulator?
Look for a circle with an A in it. If it is followed by two numbers, the first number is the mold number and the second number is the year +1900 the insulator was made. For example, (A) 39 49 means the insulator was made in 1949 with mold #39.
What Hemingray 16?
The Hemingray No. 16, with a single petticoat is still widely used for lines of medium length.”…
| Common Variations: | |
|---|---|
| Colors: | Hemingray Blue, Aqua, and Clear |
| Bases: | Smooth, Corrugated, Round or Sharp drip points |
What are glass insulators for?
A: Insulators are those glass or porcelain things you see on the tops and crossarms of telephone poles. Their purpose is to insulate the electrical wires they carry, so that electricity (or telephone calls) don’t all leak into the pole and into the earth.
How old are ceramic insulators?
Porcelain insulators had their start when local potteries began making telegraph insulators in the 1850’s and 1860’s. These crude early pieces were usually threadless and were produced in much lower quantities than their glass counterparts, and few have survived the years.
What do the numbers mean on Hemingray insulators?
All Hemingray insulators since 1933 have had mold and date codes on them. In the Price Guide, these are generally referred to as [Numbers and dots] and [Number]. The last digit (plus 1930) is the year the insulator mold was made. Thus O-4 means the mold was made in 1934, O-8 means 1938.
What is the most valuable Hemingray insulator?
Most Widely Popular Glass Insulators – Based primarily on overall collector perception, at any collecting level, of the most widely popular insulators in the hobby, common to rare….Most Desirable CD Styles.
| Rank | CD | Votes |
|---|---|---|
| 1 | CD 257 (Mickey Mouse) | 25 |
| 2 | CD 145 (Beehive) | 25 |
| 3 | CD 162 (Signal) | 22 |
| 4 | CD 102 (Pony) | 18 |
What color is the best insulator?
Properly working insulation should be a yellow, white, green or pink color depending on the manufacturer. Move the insulation on the basement ceiling around a little bit (just use a wooden spoon or other object to push it back and forth) to see if it has darkened.
How much is a Hemingray 42 worth?
Because the Hemingray-42 insulator is one of the most common, they tend to be an affordable collectible. Most sell for under $10.
When did they stop using porcelain insulators?
They were introduced in the 1840s when the first telegraph lines went up, and they continued in use until the late 1960s, when electric companies started using porcelain insulators and telephone companies switched to plastic insulators.
What is Hemingray Glass?
The Hemingray Glass Company operated continuously from 1848-1972 and was the single largest manufacturer of glass insulators in the world. This web site is dedicated to providing information on every insulator style made by Hemingray.
What is a Hemingray 9?
The Hemingray 9 was a very popular pony style insulator, designed for rural telephone lines. These were produced in mass quantities, and can commonly be found in aqua, clear and ice blue. Other colors are generally less common and more desirable.
Where can I find information on Hemingray Glass insulators?
Welcome to the Hemingray Glass Insulator Database! We’re your number one source of information on Hemingray glass insulators. The Hemingray Glass Company operated continuously from 1848-1972 and was the single largest manufacturer of glass insulators in the world.
Is Hemingray made in Muncie?
In 1933 the Muncie factory officially became the “Hemingray Division”, a subsidiary of the Owens Illinois Glass Company (listed as factory #26, and later, in about 1948, their factory number was changed to 86), but insulators made after that year continued to carry the “HEMINGRAY” name.
