Telegraph Insulators On Stamps

Thanks Jeff,
knew of the toro issue
(but not in database)
The other is a new listing! Thanks.

Need insulators at my home now,
this morning it is 13 degrees Brrrrr!
A Western Australian winter is no fun

This is India,
the place I talk to, when my computer is playing up

There are some insulators here,
but I'm leaving them where they are.....

**Bump**

Another stamp featuring Telegraph Insulators for Rod222.



South Africa commemorating the centenary of the International Telecommunication Union, or I.T.U., in 1965. Up until 1934 I.T.U. had stood for International Telegraph Union, when the name was changed.

Goodness!
had to look twice before it came apparent,
Well spotted Plateflaw!
A new listing in the Insulator Index
will they never end?...........

Hey Rod, it's been a while. No one post here since last June. But I haven't forgot about this topic. Just a little drawing...

Turkey Europa 1979

I swear I already posted this one, but cannot find it for the life of me.

Here's another that isn't too obvious unless you're specifically looking for it ... just happened to bump into a used copy while snooping through some Egyptian stamps this morning.

Ryan

One more...

Telegraph poles of 1851 and 1951. Oddly, this stamp was issued in 1953. I guess it took them a couple of years to decide whether or not it was worth commemorating. 28 insulators on a single stamp, this one might hold the record.

Ryan

Gentlemen,
you have done well,
some I have not seen before.
On to the database.
Thank you.

Telegraph and power transmission insulators

Suspended wires for electric power transmission are bare, except where they enter buildings, and are insulated by the surrounding air. Insulators are required at the points at which they are supported by utility poles or pylons. Insulators are also required where the wire enters buildings or electrical devices, such as transformers or circuit breakers, to insulate the wire from the case. These hollow insulators with a conductor inside them are called bushings. The dangers posed by cranes touching bare electric power transmission wires has created the need for an insulating link to be used on cranes working near such wires.


MaterialInsulators used for high-voltage power transmission are made from glass, porcelain or composite polymer materials. Porcelain insulators are made from clay, quartz or alumina and feldspar, and are covered with a smooth glaze to shed water. Insulators made from porcelain rich in alumina are used where high mechanical strength is a criterion. Porcelain has a dielectric strength of about 4–10 kV/mm. Glass has a higher dielectric strength, but it attracts condensation and the thick irregular shapes needed for insulators are difficult to cast without internal strains. Some insulator manufacturers stopped making glass insulators in the late 1960s, switching to ceramic materials.

I guess I am dirt.... Gentlemen and gentle woman?

Crikey!
sorry fifia, no offence intended.

So....
Ladies and Gentlemen,
you have done well,
some I have not seen before.
On to the database.
Thank you.