#railway semaphore

[drzewobojczyni]

World Watercolor Month day 4: Signal

There's hardly any fanart of Slice of Sea, huh? And I made almost all of it

Well, anyway. Trainyard is my favorite location in the game, mostly because of this music:

(Apologies for any errors in the semaphore)

DeviantArt

[railwayhistorical]

Anticipation A westbound Amtrak Southwest Chief approaches the semaphores at the east end of Colmor, New Mexico. One image by Richard Koenig; taken April 29th 2023.

[eltristanexplicitcontent]

David Clarke's Amazing 1930s GWR Model Railway, 38ft,16ft 6in

This.

Is.

Pretty darn cool.

[quotespile]

The only streetlights burning were those at the top of the stairs and the light they gave fell in dingy cones that shuddered in the intermittent gusts of winds assailing them because the other neon lights positioned in the thirty or so meters between them had all been broken, leaving them squatting in darkness, yet as aware of each other, of their precise positions, as of the enormous mass of dark sky above the smashed neon, the sky which might have glimpsed the reflection of its own enormous dark mass as it trembled with stars in the vista of railway yards spreading below it, had there been some relationship between the trembling stars and the twinkling dull red lights of semaphores sprinkled among the rails, but there wasn't, there was no common denominator, no interdependence between them, the only order and relationship existing within the discrete worlds of above and below, and indeed of anywhere, for the field of stars and the forest of signals stared as blankly at each other as does each and every form of being, blind in darkness and blind in radiance, as blind on earth as it is in heaven, if only so that a long moribund symmetry among this vastness might appear in the lost glance of some higher being, at the center of which, naturally, there would be a minuscule blind spot...

László Krasznahorkai, War & War

[vintage-london-images]

Did you have any idea that the first traffic lights anywhere in the world sprang into action outside the House of Parliament on 9th December 1868. Long before the motor car, the strange contraption was experimentally installed in the north east corner of Parliament Square, actually around where the statue of Winston Churchill is today.

The signal system was designed to bring order to a chaotic junction at Great George Street and Bridge Street with Parliament Street. In the months before its installation, two MPs had been badly injured and a traffic policeman was killed at this spot.

The traffic signal towered 20 feet above the roadway and had a gas light with sliding coloured lenses and semaphore like arms operated mechanically by a policeman.

The equipment worked along similar principles to those already used on the railways, and right from the start it operated on a red/green light system.

The experiment didn't go well, with many ignoring or being confused by the signal and not understanding their obligations, which made the chaos worse.

Unfortunately, they exploded on the night of 2nd January 1869 injuring the police constable operating them, and it was decided to curtail the experiment. London would have to wait until 1926 for its next traffic lights.

From the London Illustrated Weekly News - Saturday 9th January 1869:

'When the constable on duty opened the door to turn off the gas from the signal pillar an alarming explosion immediately ensued, which it may be supposed arose from the admission of the atmospheric air, and the consequent ignition of the gas accumulated from leakage. The constable's face was badly burned, his helmet was dashed off, and he was partially stripped. The report of the explosion, we are told, was heard in Whitehall, and at the end of Birdcage-Walk.'

[per-the-jellicle-magician]

Hi!! Just saw that warsaw skimble is named Semaforro. I love that. Does it mean stoplight? Sounds very similar to italian "semaforo" and I'm going crazy over it /pos

Hi! His full name is Semaforro, but it's shortened to Semafor in his song, and that one means semaphore, the railway signal

Also fun fact there used to be an animation studio here in Poland that also was called Semafor and I think it may be a little nod to it too, given Warsaw has this whole film studio theme

[guerrerense]

Gartell Light Railway por Dunkable Bath Por Flickr: Can you imagine having your own railway in your back garden? Well one family do...The Gartell Light Railway is a privately run narrow gauge railway located at Yenston in the Blackmore Vale, south of Templecombe, in Somerset that opens to the public six times per year. It operates a 2 ft narrow gauge railway running for 3⁄4 mile through 4 stations. The track has an interesting forked layout, incorporating a section of the much lamented Somerset & Dorset Railway. More than just a garden railway, it is also a working museum of traditional railway practice, home to an array of semaphore and colour-light signals controlled from two signal boxes. These both house nineteenth century lever frames, and other heritage equipment. On open days, trains leave the main station at Common Lane every 20 minutes. Highlight of the trip comes when two trains leave Pinesway Junction simultaneously, one heading up the recent extension to Tower View, whilst the other heads down hill, and passes under the extension on its way back to Common Lane as the other train passes above. Motive power is usually provided by the railway's two steam engines and a diesel: The GLR's first steam locomotive, No 6 Mr G was built by the North Dorset Locomotive Works at Motcombe, near Shaftesbury to an 0-4-2T design based on the former Groudle Glen Railway loco Polar Bear which can now be found at the Amberley Museum & Heritage Centre. It entered service in June 1998. The other, No 9 Jean, entered service in 2009 and is an unusual tender tank hybrid based on the design of No 6. As well as providing additional water capacity, the tanks above the driving wheels help to provide much needed additional adhesion on the 1 in 32 gradient coming out of Common Lane. You may also be lucky enough to catch Faith. The 2016 North Dorset Locomotive Works built 0-4-2T No. 8 "Faith" has relocated back to the Gartell Light Railway, where she will remain until being sold. The diesel, No 1 Amanda, originated from the Southend Pier tramway. It was rebuilt in the GLR workshops with a new body that resembles a Crompton class 33. Possibly one of the 'Slim Jim' narrow bodied Class 33/2s from the Hastings line.

[ironhorsefan]

Another update! Along with the aforementioned BR brakevan, I've gotten more stuff done! -There is now tiles for the track ballast, & thanks to @shimbongulus informing me where he got the Chara and Frisk talk sprites (thank you so much), I've been able to finish almost all of the textboxes! -I also realized that I need a "start" to be showing green, so I've now made a fully animated semaphore signal. (I ended up going with an upper quadrant signal because the song takes place in the 1950s, and by that time the majority of Britain's semaphore signals were upper quadrant) Quick railway lesson for those who don't know what a upper/lower quadrant signal is: It basically means the signal's clear aspect is shown when it moves in that direction. Ie:

[master-john-uk]

10th December 1868 - The world's first traffic lights were installed outside the Houses of Parliament in London to help pedestrians cross the road.

Designed by John Peake Knight, they had semaphore arms similar to railway signals that could be seen clearly during the daytime, with a revolving gas lantern above with red and green signals that could be seen at night. The signals were operated manually by a police officer, who would blow his whistle to indicate when the signals were about to change.

This type of traffic signal did not last long due to safety fears. On 2nd January 1869, a leak in the gas line caused an explosion which injured the policeman operating the signal.

[belovedsemi1995]

BT project RESEARCH <History of Telecommunications>

BT claim they are the first telecommunications company - which feels like a massive claim to make. Especially as telecommunications is one of the oldest forms of communication worldwide

Prehistoric era 

fires, beacons, smoke signals, communication drums, horns etc…

Used these signals to code messages 

Limited geographical area

Limited contact to those who received their messages

Needed to be simple, pre decided meanings 

6th Century BCE

Mail

Cyrus the Great (Persian emperor)

Empire was so massive that communication was extremely difficult 

Established first postal system in history of the world

Egypt, Rome and China (other great massive empire’s of the time - similarly followed)

5th Century BCE

Pigeon Post

Persia and Syra credited as first pigeon system 

They had an ability to find their way back to their nest regardless of distance

Travelers would take them with them, write a message and release them, to end the message back home

Romans later on used them to report outcomes of sporting events

Egyptians for military communications

4th Century 

Hydraulic Semaphore 

Designed in ancient Greece 

Method of communication 

Vital during first Punic War

Network of identical containers on separate hills, each with vertical rod floated in it

Predetermined codes inscribed at various intervals 

Would signal another with a torch 

They would synchronize and open their spigots and drain water until it was at the desired code

Limits as smoke signals 

Messages must be predetermined prior to sending

Circa 490 BCE

Heliographs

First documented during famous greek battle of marathon that took place on 490 BCE

Shining sun on a polished object (ex. shield)

15th Century CE Maritime flag semaphore Special code involving positions of two hand held flags Position and motion represented a letter or number Easy for fleets to communicate

1672 First experimental acoustic telephone Robert Hooke Sound could be transmitted over a wire or string into an attached earpiece / mouth piece

1790 Semaphore lines Maritime flags inspiration Chappe Brothers (french inventors) Optical telegraph system in 1790 System of pendulums set up somewhere high Telegraph would swing its mechanical arms around and sign messages from one tower to the next First telecommunications system in europe

1838 Electric telegraph Samuel B Morse (Alfred Vail and Leonard Gale) When connecting two model telegraphs together and running electricity though wire you could send a message by holding or releasing the buttons in a series of intervals Morse code and laid foundation for modern landline phones

1858 First trans Atlantic telegraph cable US and UK had telecommunication stations and able to communicate within their own countries Cryus Field (NY) wanted to connect both countries Completed in 1858

1867 Signal lamps Dots and dashes flashed by signal lamps at sea British admiral Phillip Colomb To help ships communicate easily Similar to morse code Morse code became more used

Current timeline 1876: telephones 1877: acoustic phonograph 1880: telephony via light beam photophones 1983: wireless telegraph 1896: Radio 1915: first north american transcontinental telephone calling 1927: television 1927: First Uk and US radio-telephone service 1930: first experimental videophones 1934: first commercial radio telephone service 1936: first world wide public videophone network 1946: limited capacity mobile telephone service for automobiles 1956: transatlantic telephone cable Etc…

Franic Ronalds First working telegraph 1816 Static electricity

Charles Wheatstone and William Fothergill Cooke (BT) patented 5-needle, 6-wire system which entered commercial use in 1838 Operated along Great Western Railway 9th April 1839 They did not believe their invention was not new but added to an existing electromagnetic telegraph innovation Improvement Not a company until 1846

6 January 1838 Atlantic ocean Samuel Morse of morse code Developed on 2 September 1937 Alfred Veil saw this and helped him register this; telegraph terminal that integrated a logging device for recording messages to paper tape By 1851, their lines expanded across 20 000 miles of the US

Claude Chappe 1792 French engineer First visual telegraphy system between Lille and Paris Strasbourg to Paris Rotating beams of wood Abandoned in 1880

Abraham Edelcrantz’s 1794 Swedish Stockholm to drottningholm Relied on shutters Abandoned in 1880

America Telegraph system in 1844 and ran for 3 years by the US Post office Pioneering washington to Baltimore line Private telegraph companies also were in operation Meaning BT in 1846 - may be the first British telecoms but not the first internationally. The US likely was first. They had the invention but it seems like the US was quicker at monopolizing the invention. Western union - 1st telecommunications monopoly form in 1856 by 5 smaller forms Civil war used this form of communications

Charles Wheatstone and William Fothergill Cooke (BT); did not believe they were the first to do something but rather added to previous inventions. Telecommunications have been around since language itself existed. Saying it is the first company undermines a lot of the preexisting history of communication. As well, systems used globally were in place but companies have a very capitalistic approach to the world - equivalent companies would exist in the ancient world too but had a different name and different technology to do the same thing.

[railwayhistorical]

Notes from the Field

I've got a six-page "short take" article in the latest issue of Railroad History (no. 229). The subject is some of the remaining semaphore signals on the Santa Fe Railway in New Mexico; it's a follow-up to my much longer 2019 article in the same publication (no. 221).

Most of the aging semaphore signals of the Atchison, Topeka & Santa Fe Railway have come down in recent years, replaced by modern devices. But eleven of the 100-year old sentinels soldier on with no replacement signals positioned adjacently. My article provides the location of all, images of several, along with the appearance of Amtrak's Southwest Chief, which is the only train on the line currently tripping these ancient implements.

Three images by Richard Koenig; all taken April 2023.

[estheruary]

The standard CS education ruins everyone when it comes to threads. They aren't hard, they aren't scary, and there's nary a non-trivial program that doesn't use them in some manner. But CS teachers will act like they're some super advanced arcane magic that you shouldn't touch unless you're a 12th level technomancer.

A process is the railway system with depots, data is the cargo, threads are the trains. This metaphor is so apt that semaphores, a thing for coordinating threads, is named after the signaling system used for trains.

If you send two trains to pick up or drop off cargo from the same depot they'll get in each other's way. Many conductors can ask what's at a depot at the same time but sometimes they'll have to wait until one of the trains finishes dropping off their cargo to know what's there. You can't interrupt a train in the middle of unloading so you tell the dispatcher to have the other trains wait.

The math-heavy CS locking stuff isn't usually relevant to the kinds of normal things people use threads for. If you have a bunch of threads fighting over a contentious resources it's probably not a good fit for threads. And that's kinda the point honestly, the times you reach for threads is when they're easy because that's the sign that it's a good fit for your problem domain.

[olddominionrailways]

Exploring the World of LGB Train Parts: A Comprehensive Guide

Introduction:

The world of model trains has captivated enthusiasts for generations, offering a miniature universe that mirrors the charm and intricacies of real-life railroads. Among the various scales available, LGB (Lehmann Gross Bahn) has emerged as a leading name, known for its high-quality and durable products. In this article, we delve into the fascinating realm of LGB train parts, exploring the components that make these miniature locomotives and railways function seamlessly.

I. Understanding the LGB System:

Before delving into the specific parts, it's crucial to grasp the basics of the LGB system. LGB trains are typically designed in the G scale, making them larger than other model trains. The standard gauge of 45mm between the rails contributes to their realism and allows for intricate detailing. LGB trains are also renowned for their durability, making them suitable for both indoor and outdoor use.

II. Locomotives and Power Sources:

A. Locomotives:

Drive Mechanism: LGB locomotives boast robust drive mechanisms that power the wheels, enabling smooth movement along the tracks. The gearing system is precision-engineered, ensuring reliable performance and a realistic driving experience.

Motors: High-quality electric motors are at the heart of LGB locomotives. These motors are designed to provide ample power while maintaining efficiency. The precision of these motors contributes to the precise control and speed variations that enthusiasts appreciate.

B. Power Sources:

Track Power: LGB trains can be powered through the tracks, with electricity supplied by a controller. This traditional method is reliable and straightforward, making it a popular choice for many model train enthusiasts.

Battery Power: For those who prefer a wireless setup or want to run their trains in outdoor settings without access to electricity, battery power is an excellent option. LGB offers battery-powered locomotives and retrofit kits for existing models.

III. Track and Accessories:

A. Track Components:

Rails: LGB track rails are crafted from durable materials, ensuring longevity and resistance to weather elements. The robust design allows for smooth operation and minimal wear, even in outdoor environments.

Turnouts and Switches: Turnouts and switches play a crucial role in directing trains along different paths. LGB offers a variety of turnouts with manual or motorized options, enhancing the flexibility and operational possibilities of the layout.

B. Accessories:

Signals and Lights: LGB provides a range of signals and lights to add realism to your miniature railroad. From traditional semaphore signals to modern LED lights, these accessories contribute to the visual appeal and authenticity of the model.

Bridges and Tunnels: Elevate your model train landscape with LGB bridges and tunnels. These accessories provide visual interest and can be used to create varied and exciting layouts.

IV. Maintenance and Replacement Parts:

A. Cleaning and Lubrication:

Track Cleaning: LGB offers specialized track cleaning solutions to ensure optimal conductivity and prevent dirt buildup on the tracks. Regular cleaning is essential for maintaining smooth locomotive operation.

Lubrication: Proper lubrication of moving parts, such as gears and axles, is vital for preventing wear and ensuring the longevity of your LGB trains. LGB provides lubricants designed for their specific components.

B. Replacement Parts:

Gears and Wheels: Over time, gears and wheels may experience wear. LGB offers replacement gears and wheels to keep your locomotives running smoothly.

Motors and Electronics: In the event of motor or electronic component failure, LGB provides replacement parts to restore your locomotive to its original functionality.

Conclusion:

As we've explored the world of LGB train parts, it's evident that the brand's commitment to quality and detail sets it apart in the realm of model trains. From locomotives and power sources to track components and accessories, LGB provides a comprehensive ecosystem for enthusiasts to build and customize their miniature railroads. Whether you're a seasoned model train collector or a newcomer to the hobby, LGB train parts offer a gateway to a world of creativity, craftsmanship, and endless possibilities.

Source URL: https://bit.ly/48UdVyr

[tovarishfungus]

I recently watched a documentary about the East German Railways in the 90s, after the collapse of the GDR. They were using really old rolling stock on some of the more remote lines and in one scene a kid wanted to take their dog with them on the train. So the friendly conductor opened a little hatch on the side of the passenger car, sat the little dog down in it and closed it again. Like "Off you go into the dog storage compartment, bye!"

That documentary also featured semaphore signals that were lit not by electric lights, but with propane (?) tanks attached to the posts, which I assume had to be manually lit and extinguished each day.