Telegraph Insulators On Stamps

These stamps of Togo are from a set of four issued on October 24, 1961 publicizing the UN Economic Commission on Africa. The first has clear insulators:


Issued in SS contains the complete set.

Thanks Eli,
the second stamp may show Oil Derricks perhaps?

The derrick derives its name from a type of gallows named after Thomas Derrick, an Elizabethan era English executioner.

I have not thought about it, but of course both materials iron, transport of them and labour costs are getting higher, too... But "18 per cent rise" sounds modest - here in the UK, it must be more since the end of February. Where to assemble, how strong the wind to cope, what kind of earth to build on and how large foundation should be, etc etc all project could be a challenge, I guess.

Mongolia
1978





There are lot of them on stamps, and I didn't know the origin of the name...

Is that not the wonder of Philatey?
It can take one down more forks in the road, than blinks of your eyelids.

Derrick in particular had been convicted of rape but was pardoned by the Earl of Essex (clearing him of the death penalty) on the condition that he became an executioner at Tyburn.[citation needed]

Derrick executed more than 3,000 people in his career, including his pardoner, the Earl of Essex, in 1601. Derrick devised a beam with a topping lift and pulleys for his hangings, instead of the old-fashioned rope over the beam method.

The word derrick became an eponym for the frame from which the hangman's noose was supported and through that usage (by analogy) to modern day cranes.

Oh yes, started from Derrick, learnt about it, then went to sideways such as Crane, Gyn, Hoist, Pumpjack and Sheers... and took long time to come back to the real world! And it was a great help for me to prepare a new thread, "Pylon, Lattice beam and truss structure on stamps".

This one shows 2 different type of lattice structures (or four legs are hidden by the Orange sail?) and ladder details I like - and of course with tiny insulators!

United Nations
1970 / Lower Mekong Basin Development

I mused on the question of multiple High Voltage Wires on Pylons.

Most long distance high voltage transmission is done in 3-phase Delta configuration, requiring only three cables.

This saves the cost of the fourth cable, used for the neutral line. It also avoids problems of imbalanced currents flowing through the fourth cable or the earth, since in Delta configuration any current imbalance on a phase is automatically shared on the other two phases, making for lower losses.

If 3-phase Wye configuration with four cables is used, it is generally only over short distances at the generating station and at the end-user's facility. Conversion at each end is generally achieved by Wye-Delta transformers.

In the bottom photo in this set the wires at the tops of the towers don't show up well, except one of them has a marker ball affixed to it to alert aviators. These top wires are connected to the tops of the towers without insulators and act to divert lighting strikes into the structure of the nearest towers, and then into the earth via ground rods, rather than striking the power cables and causing current and voltage surges in the grid.

Also, in the the bottom photo, the six cables comprise two independent 3-phase Delta transmission lines of three cables each.

This stamp was issued by Laos on May 30, 1980 to commemorate the 25th anniversary of Lao People's Revolutionary Party (LPRP). It was printed in Vietnam in low quality printing equipment, hence the poor printing and colors:

A lot of new technical terms made me freeze for a while, but getting some on the "3-phase" and "Wye-Delta" idea assisted by some diagram...



Do you think the illustrated cables are incorrect, Rod?? A friend of mine is a Japanese stamp designer and he told me that researches to make the tiny space of stamp could be pile after pile of images... still sometime a specialist philatelist would find a mistake! How about this one below - this must be simplified, I guess?

South Africa
1973

Still, it has warm and vibrant atmosphere also we can recognise the insulators - nice one, LaoPhil!
Here is my new finding (by chance), shows the core spirit of this tread, insulators and hard-working technician in a height.

Yugoslavia
1 January 1940 / Belgrade Postal Employees' Fund: Telegraph linesman

Not checked previous.
Dual Thematic
Israel 1965 Sc#294 Type A122 70 agarot with TAB.
ITU Centenary and Syncom Satellite

Hi Tomoko,
A bridge too far for me
Guess
I think the answer lies in the overall design
The designer has taken an Pylon Icon and married the cables to the design rectangles, with a sense of a Piet Mondrian painting. (Coloured rectangles)

The journey from power plant to Industry, Offices, homes, traffic lights, sports stadia, factories, transport, and street lighting. and places of worship !

I would presume it was not intended to be accurate.

Nearly missed you post.

Yes very true, Rod - I am recently watching up while walking, and often find old reminds of insulators on the corner of old houses and buildings. Before the lines are laid underground, people must have observed the expansion of the real connection - as this stamps shows... even worshipping Buddhist dual rings are there.

Mongolia
15 October 1976 / Industrial Development

Nice find Tomoko !

Sc#860 1984

I found one more, prominent taoism symbol with a set of insulators (tiny! thus enlarged) on stamp, and found what the symbol is this time.

Mongolia
11 July 1966 / 45th Anniversary of independence / State Emblem

Nice Find, I collect Mongolia, not seen that stamp before.

Cyprus 1965 Sc#257 >