Insulator Historical Timeline

I have a tendency to compare this to the eccentricities of the numismatics fraternity that from time to time goes a tiny overboard on studying many really slight variations in coin dies, as observed below a microscope or loupe. In some circumstances an person letter leans strongly to the suitable or the left, is greater or reduce than an adjoining character, or is as well close or too far apart from the next letter in sequence. Occasionally a letter in the prime line of text is practically touching a letter in the line beneath. Some of the colors in these earlier embossing variants are quite scarce to rare, and in some circumstances almost not possible to find.
A moderate size power insulator made for high voltage energy distribution with a rating up to 40,000 volts. The Hemingray Glass Firm in Muncie, Indiana developed these No.two "PROVO Sort" insulators in the late 1890's to early 1900's. Glass insulators are nine CD 183 Hemingray-71's, and two CD 219 Hemingray-660's. Some of the glass insulators cannot be seen in the photo. A rural farm outdoors of Bryan, Ohio with a remnant single-user open wire telephone line with two glass insulators.

• Ultimately Hemingray transitioned into employing round drip points as shown on this hoop skirt.


• I just picked them up simply because I liked them and they make an exciting show in the yard.


• The No. 12 was typically applied on telephone “drop lines” extending from the back alley to person properties and firms.


• The one particular on the ideal is the wider version (created after the mold was re-tooled).

1 of the most common forms of pony insulators was made by Hemingray Glass Companyof Muncie, Indiana, and that was their “Number 9” style. CD 302 Hemingray energy insulators nevertheless in service use in Ohio just after extra then one hundred years of service duty. It is exceptionally rare to see significant colored glass pintype energy insulators nonetheless in service use nowadays. The CD 232 Hemingray D-513 was created by the Hemingray Glass Enterprise in Muncie, Indiana in the 1930's and 40's.

Olive Amber Cd 162 Hemingray Glass Insulator

I have a buddy who specializes in this CD so he'll want me to ask you about the mold numbers in case you have one he's hunting for! We uncover eight drip points that are only partially flaked. The majority of these are really modest, and only detected with careful examination. Glass has wealthy, abundant saturation, however permits light to pass throughout, in a standard, backlighted cabinet. A further beautifully colored 1893 patent dated Hemingray with mustard toning.
At https://atavi.com/share/wox2jiz7bjti was taken, Bluffton, Indiana was still employing the old six.6A series street lighting loop, which only a couple of cities and towns had been applying at the time. The street lighting circuits had been changed more than to contemporary parallel circuit method a handful of years soon after the photo was taken. Maybe no other glass insulator comes to thoughts far more than the Hemingray 42 when we feel of the glass telegraph/phone insulator. Introduced in 1921, the  petticoat communication insulator ever created. glass insulators companies. to support rain water shed off the glass insulator.
This particular mold has the numbers almost operating collectively as “21893”. Some of them are significantly thicker and heavier than their narrower “mold twins”. “1893” on a Script style moldThe “Prismic” embossing tends to have a far more angular look to the letters, with sharper corners and a crisp, “cut” higher-relief prism-like look in evidence. Inside the Prismic embossing, there are two primary varieties of the quantity “2” like the “Looped” or “Cursive” 2, and the “Swan” style 2.

Pole Major Discoveries' Early September Sale #2108 Closed #

By 1895 he was having several porcelain businesses make porcelain insulators to his styles made for his manufacturing business enterprise he began in 1894. In 1898 he opened his personal porcelain insulator plant in Victor, New York and developed wet process porcelain insulators. Fred would go on to retire from his insulator manufacture in December 1904 but continued to have some influence for a few more years. The CD 249 is a big energy insulator made use of for high voltage power distribution with a rating up to 50,000 volts. The Hemingray Glass Enterprise in Muncie, Indiana developed these Provo Variety insulators in the early 1900's, and have been applied in service around the Pittsburgh, PA location. There are 3 diverse designs of the letter “G” observed on the STAMP style No. 9s.
Please feedback further important dates or note any required corrections. Dates regarded as especially important are highlighted in red. Boyd glass “chick salt” covered dish in lilac glass. If there are other numbers or letter out of alignment, note that and cautiously examine with other examples to see if they are placed in the precise similar position.
The density of the glass is such the red tones are hard to bring out. I feel Spirit Bear told me the date refers to the teeth at the bottom of the insulator. This 1 is a bit slimmer and smaller sized than other examples I have seen. Most clear insulators are from the 1930s and later.
The "PROVO" name can be located on four distinct CD style insulators as No. , No.1 , No.2 , and No. four (CD 303.5). Rather than leave all of my Hemingray insulators outside I've brought some of them indoors and added some battery faux tea lights. Not adequate light to study by but good ambiance in the living room in the evenings. There have been a lot of CD 160 Hemingray-14's on many of the poles downtown Hamler only. CD 160's are a smaller size of the CD 162 and nickname the "child signal." They had been a lot rarer to see along railroads. On this pole there ought to of been involving of the CD 160's.
For these interested, here is a street view of this insulator in use. A close up of a CD 232 Hemingray-D-513 in service use along a rural road just outdoors Decatur, Indiana. The street light is an old Westinghouse OV-ten mercury vapor street light. McLaughlin reportedly created 672 commemoratives in 1972, of which only 72 were red milk like the one particular shown on the opposite page.² The Value Guide values the commemorative in red milk glass at $800 to $1,000.