Thank you good teacher! You and many UA-cam videos explain it well. There are so many questions, and each of your videos contribute to a full understanding.
Very informative, exactly what I was looking for! I'm planning to run a TRPG session which will be taking place on a train and wanted to understand this mechanism in case the players decide to mess with the couplers 😂
Using Janney couplers together with buffers looks a bit special, compared to North America (Janney/AAR only) or Europe (buffers but a simpler hook and loop coupler). I take it that the buffers must be pressed together slightly before the couplers will lock? But it makes sense to keep the buffers after a coupler conversion. By the way, I believe Type F, the improved coupler used for freight cars, is designed to prevent cars from decoupling and turning over during a derailment. If a car starts to topple, the neigboring cars will resist this, as the coupler is designed to prevent that type of rotation. And avoiding decoupling is a defense against telescoping of cars during an accident. The passenger type coupler has this safety feature, but also comes with sprung drawbars (i.e. the connection between car and coupler), which provides better comfort for the passengers. But the buffers, if present, provide more or less the same comfort, i.e. reduced jolting due to "slack action".
Wow that's a great observation, I was so focused on the coupler that i completely missed buffers in the last 'uncoupling' part of the video. The video definitely is from the Indian subcontinent. let me look into it as to what is the purpose of having both couplers and the buffer. I agree Type F prevents telescoping. I should have included it in the video. Thanks a lot for the fulsome comment. These discussions are very enriching not just for you and I but for the readers as well.
As I recall, many Indian trains are equipped with both knuckle/Janney/Automatic couplers and with the old Buffer-and-Chain setup, so they'll be compatible with both newer and older rolling stock. Some early Australian locomotives were also equipped with both coupling systems.
For passenger trains this is combined with a Pullman gangway with the faceplates being in compression. The friction between adjacent faceplates provides damping. After a while these faceplates become highly polished. This feature is important for achieving good ride quality.
Some passenger trains with chain and link couplers are smoother due to being able to crank the chain down tight nearly eliminating all slack in the train. As for freight trains knuckles are better as you mentioned due to efficiency
Dont call it a Janney coupler, the Janney coupler is the first patent for a knuckle and it was different because it had a rotary pin instead of a lifting pin, it also worked wayyyy worse
ive wondered this for many years (my dad worked for a class 1 railroad in the US for 42 years but no longer remembers) HOW do the couplers, with the pin on the bottom work? you show them at 6:15. the pin cant 'drop' to make the connection because gravity would pull them down and disengage the knuckle. there must be some complicated linkage to LIFT the pin and hold it up in engagement
There's a bit more inside a coupler than just a pin. When you "pull the pin" on a freight car, it lifts a block that allows a hook to move that allows the knuckle to swing open. There's more than one design out there of course. I've seen knuckle couplers on an old Interurban trolley car where you pull a chain on the side of the car that "pulls the pin" from inside the drawbar. Definitely different, but also necessary when your rolling stock will negotiating streetcar curves through downtown streets.
I assume the last shots are of Indian or Pakistan railway, they use both Janney style and train buffers. Very interesting combination. And thank you for the video.
The last shots are from the Indian Railways and what you see is two locomotives being decoupled. A lot of locomotives in the Indian railways have both Janney/CBC couplers as well as side buffers (at both ends). That way a locomotive can pull newer passenger cars/coaches with Janney couplers as well as older passenger cars/coaches with chain and buffer couplers. Freight cars in the Indian railways only have Janney couplers.
0:49 Wouldn't it have been be much safer to just add a small ladder to each car so that the guy could just hold onto it and move with the car "rammed into" instead of having to move by himself? Or even better, have the guy starting outside, then move in-between when the two cars are together? 🧐
Agree but I am guessing these instances happen because of complacency. When you do this 30 times everday for 365 days for 10-15 years, you start becoming complacent and want to save time so you start doing these things.
found one source for that clip: ua-cam.com/video/Fw1axr_4-xQ/v-deo.html people in that vid speak German and I can assure you : no thats not SOP, and *probably* enough to lose your job.
That was SOP in France in the past, now the man is supposed to wait on the side, to improve safety. I don't know if it is still SOP in some european countries, though.
Thank you good teacher! You and many UA-cam videos explain it well. There are so many questions, and each of your videos contribute to a full understanding.
These type of comments make it worth it. thanks for liking.
Very informative, exactly what I was looking for! I'm planning to run a TRPG session which will be taking place on a train and wanted to understand this mechanism in case the players decide to mess with the couplers 😂
haha i hope the video explains these couplers well enough for that purpose.
Using Janney couplers together with buffers looks a bit special, compared to North America (Janney/AAR only) or Europe (buffers but a simpler hook and loop coupler). I take it that the buffers must be pressed together slightly before the couplers will lock? But it makes sense to keep the buffers after a coupler conversion.
By the way, I believe Type F, the improved coupler used for freight cars, is designed to prevent cars from decoupling and turning over during a derailment. If a car starts to topple, the neigboring cars will resist this, as the coupler is designed to prevent that type of rotation. And avoiding decoupling is a defense against telescoping of cars during an accident. The passenger type coupler has this safety feature, but also comes with sprung drawbars (i.e. the connection between car and coupler), which provides better comfort for the passengers. But the buffers, if present, provide more or less the same comfort, i.e. reduced jolting due to "slack action".
Wow that's a great observation, I was so focused on the coupler that i completely missed buffers in the last 'uncoupling' part of the video. The video definitely is from the Indian subcontinent. let me look into it as to what is the purpose of having both couplers and the buffer.
I agree Type F prevents telescoping. I should have included it in the video. Thanks a lot for the fulsome comment. These discussions are very enriching not just for you and I but for the readers as well.
As I recall, many Indian trains are equipped with both knuckle/Janney/Automatic couplers and with the old Buffer-and-Chain setup, so they'll be compatible with both newer and older rolling stock. Some early Australian locomotives were also equipped with both coupling systems.
For passenger trains this is combined with a Pullman gangway with the faceplates being in compression. The friction between adjacent faceplates provides damping. After a while these faceplates become highly polished. This feature is important for achieving good ride quality.
Knuckles. The superior couplers! Why the rest of the world does not recognize their greatness I will never know.
Some passenger trains with chain and link couplers are smoother due to being able to crank the chain down tight nearly eliminating all slack in the train. As for freight trains knuckles are better as you mentioned due to efficiency
Dont call it a Janney coupler, the Janney coupler is the first patent for a knuckle and it was different because it had a rotary pin instead of a lifting pin, it also worked wayyyy worse
You are correct
Explained very well
Great explanation, thanks for your great service
It was very informative. Thank you.
Uk trains have buttons to automatically decouples the train if no work then use the lever outside
ive wondered this for many years (my dad worked for a class 1 railroad in the US for 42 years but no longer remembers) HOW do the couplers, with the pin on the bottom work? you show them at 6:15. the pin cant 'drop' to make the connection because gravity would pull them down and disengage the knuckle. there must be some complicated linkage to LIFT the pin and hold it up in engagement
There's a bit more inside a coupler than just a pin. When you "pull the pin" on a freight car, it lifts a block that allows a hook to move that allows the knuckle to swing open. There's more than one design out there of course. I've seen knuckle couplers on an old Interurban trolley car where you pull a chain on the side of the car that "pulls the pin" from inside the drawbar. Definitely different, but also necessary when your rolling stock will negotiating streetcar curves through downtown streets.
Wow, that's a good explanation 😍
Glad you liked it
I assume the last shots are of Indian or Pakistan railway, they use both Janney style and train buffers. Very interesting combination.
And thank you for the video.
The last shots are from the Indian Railways and what you see is two locomotives being decoupled. A lot of locomotives in the Indian railways have both Janney/CBC couplers as well as side buffers (at both ends). That way a locomotive can pull newer passenger cars/coaches with Janney couplers as well as older passenger cars/coaches with chain and buffer couplers. Freight cars in the Indian railways only have Janney couplers.
Most important thing is the Trains. Libality❤❤
very well explained Good
Thanks for liking
0:49 Wouldn't it have been be much safer to just add a small ladder to each car so that the guy could just hold onto it and move with the car "rammed into" instead of having to move by himself? Or even better, have the guy starting outside, then move in-between when the two cars are together? 🧐
Agree but I am guessing these instances happen because of complacency. When you do this 30 times everday for 365 days for 10-15 years, you start becoming complacent and want to save time so you start doing these things.
Hi class 415/416 2:09 class 319s 2:24
So, where are the ties?
How are they uncoupled?
It shows uncoupling at the around the 06:37 mark.
You pull a lever that lifts the pin holding the coupler shut. In the US at least the lever is on the side of the car.
0:47 That was a stunt. ..right? I thought for sure a man was about to get killed.
That can't be SOP can it?
found one source for that clip: ua-cam.com/video/Fw1axr_4-xQ/v-deo.html people in that vid speak German and I can assure you : no thats not SOP, and *probably* enough to lose your job.
That was SOP in France in the past, now the man is supposed to wait on the side, to improve safety.
I don't know if it is still SOP in some european countries, though.
They are called buckeyes the fact you don show the British saying of it when the British invented trains makes me think England doesn’t exist
Take it easy! :) Janney was the one who first invented/patented this type of couplers right?
Your comment makes me suspect that english doesnt exist
need somebody whos less ethnic to explain such an iconic component
I apologize, was there anything you didn't like?
Less ethnic? That's just doesn't make any sense.
your wife as racist as you are?