Talk:Railway coupling

message: Allison? What's that?
It is called the JANNEY coupling, after its inventor, Eli Janney. I might add that I couldn't find any reference to "Allison" couplings on the 'Net.
Anyway, I am going to try to merge this article with the "Coupler" article, and try to make it all make sense.
...I have now done that.
:: Maybe Allison is a mishearing of the Russian SA3 Willison ... Tabletop 09:54, 21 February 2006 (UTC)
thread_title:  Allison Willison 

message: A more complete list of railways that use Janney couplers would be nice!
Tabletop 05:08, 26 Jan 2005 (UTC)
replies: text:  Photos of the ends of trains are often small and dark, making it hard to tell what kind of couplers are in use.  Tabletop 09:55, 21 February 2006 (UTC)
replies: text: The China Railways use the AAR coupler, any hard couver edition of Jane's World Railways will tell you so. The various Chinese steam locomotives imported into N. America did not need to have their coplers changed. Trackside 140 - QJ Steam Locomotives At Bureau Jct., Illinois Peter Horn User talk 00:22, 16 November 2010 (UTC)

text: I have added Chinese QJ steam locomotives 15 Sept 2006 Peter Horn User talk 15:31, 15 June 2011 (UTC)
replies: text: By the way there is a newer article (page) called Janney coupler. Peter Horn User talk 15:37, 15 June 2011 (UTC)
thread_title:  Which railways use Janney couplers? 

message: Substantially the same content is now duplicated at Coupling (railway) and Coupler.  We should standardise on one and make the other a redirect or disambiguation page.  The accurate content at Coupler predates Coupling (railway), so that might be an argument in one direction.  The word 'coupler' is more common in US English, while 'coupling' is more common in British English (probably because a European railway coupling is not a single device, but rather the combination of hook and chain for draft forces and buffers for buff force). —Morven 07:24, Jan 26, 2005 (UTC)
:Hello all, Coupler is an disambiguation page. So what/where is that "duplication"? Peter Horn User talk 23:47, 15 November 2010 (UTC)
thread_title:  Duplicated content 

message: :Section heading but no further comments were added by anon editor at 213.78.107.245
Good question.  First off, do you have a definition or another reference that discusses them?   I haven't heard of this kind before.  slambo 20:18, July 12, 2005 (UTC)
:: Before there were screw couplings there were three link couplings, say around 1850.  To reduce the slack, the middle link was replaced with a screw thread which could tighten or losen the coupling.    Tabletop (talk) 01:13, 22 May 2009 (UTC)
thread_title:  What about three-link couplers? 

message: Having just seen the picture of the BSI coupling in the section on UK couplings above, can anyone explain how it works?--Robbie aka Zoqaeski 12:33, 15 April 2006 (UTC)
replies: text: I've found some better photos for some of the types above, and a good article on how some types - but nothing on how the BSI coupler works. I'll ask on a mailing list I'm on. Thryduulf 15:51, 15 April 2006 (UTC)
thread_title:  BSI coupling 

message: Unknown Coupler seen on Swiss EMU Peter Horn User talk 16:18, 16 November 2010 (UTC)
replies: text: The coupler on the photo looks to me like a "Schwab Verkehrstechnik Frontkupplung". -- 145.253.237.114 15:58, 4 September 2006 (UTC)
replies: text:  Can be put a thumbnail of this picture in the Gallery?    Tabletop (talk) 02:51, 25 March 2009 (UTC)
thread_title:  New Coupler design 

message: Does anybody have information about this type?  BenBurch 15:22, 17 November 2006 (UTC)
replies: text: I doubt that such a thing exists as a railway coupier. Google was of no help. Peter Horn User talk 16:33, 16 November 2010 (UTC)
replies: text: Nobody has stepped to the plate. Perhaps it is a Janney coupler head that drops down? Peter Horn User talk 02:48, 13 December 2016 (UTC)
thread_title:  Arrow Drop Coupler 

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thread_title:  GA Re-Review and In-line citations 

message: This article is currently at Good article review. LuciferMorgan 21:09, 20 August 2007 (UTC)
replies: text: This article has been delisted per the discussion, now in archive, found here. Once the issues have been addressed and the article is brought up to the standards listed at WP:WIAGA, the article may be renominated at WP:GAC. Best regards, LARA♥LOVE 03:59, 31 August 2007 (UTC)
thread_title: [[WP:GA/R|Good article review]]

message: "The AAR coupler has stood the test of time since its invention, and has seen only minor changes:
"It is clear that the original Janney coupler is no longer compatible with the latest AAR couplers."
These statements occur one right after the other, and seem contradictory. If the changes have been "only minor," why is the Janney incompatible with the AAR couplers? 66.234.220.195 (talk) 16:27, 11 February 2008 (UTC)
replies: text: See Talk:Coupling (railway)#Not original research, just visual comparison. below. Peter Horn User talk 23:42, 15 November 2010 (UTC)
thread_title:  Contradictory statements? 

message: File:Coupler ABC 2.jpg|ABC Coupler c1910 with backup chainsABC
File:Coupler Nigeria 2.jpg|ABC Coupler c1950 in Nigeria
File:Coupler AO Benguela.jpg|Unknown coupler in Angola on Benguela Railway  http://mikes.railhistory.railfan.net/r011.html 
File:Coupler KY 71 Norwegan.jpg|Kenya chopper aka Norwegan coupler
File:Railroad Coupling (CMRR).jpg|AAR aka Alliance aka Centre Buffer Coupler
File:Togo Eisenbahn 086 1990-02.jpg|Togo Buffer and chains, German ?? Heritage
Peter Horn User talk 22:26, 15 November 2010 (UTC)
thread_title:  Gallery 

message: What does it mean to be "bufferlocked"? I have an idea from the article, but either a link to an article describing or explaining it, or a parenthetical explanation (e.g., "buffers slide away from each other on a curve so that one gets hooked behind the other," or whatever explanation is accurate and understandable) ought to be included. 69.42.7.98 (talk) 14:56, 30 August 2009 (UTC)
thread_title:  Bufferlocked? 

message: Just for the record, one needs only to look at the illustrations to see that the knuckle contour of the original janney coupler Coupling (railway)#Janney coupler and that of the actual prototype AAR coupler Coupling (railway)#AAR coupler that is still in use are quite imcompatible. Peter Horn User talk 03:18, 20 March 2010 (UTC)
replies: text: The Original contour is that shown on the patent drawing(s). The actual contour is that of first prototype or the first production model, and the latter is the one still in use today. Peter Horn User talk 00:49, 16 November 2010 (UTC)
thread_title:  Not original research, just visual comparison. 

message: Could someone upload Drawing of an AAR type E knuckle coupler from US Army Field Manual FM 55-20, Figure 8-9 AAR type E knuckle coupler? Peter Horn User talk 19:50, 22 May 2010 (UTC)
thread_title:  Additional image 

message: The railways in the Middle East, Arabia, and North Africa (especially the standard gauge ones) don't yet join up much, but are likely to do so in the foreseeable future as large if not vast sums of money are spend on them.  Links to Europe and China are also likely.  Concentrating on locomotives and freight wagons since passenger units tend to have their own automatic couplings, there are three couplings in use, AAR, SA3 and Buffers, with the addition of dual fitment and adaptors.  What are these systems likely to be?    Tabletop (talk) 00:11, 16 November 2010 (UTC)
thread_title:  Middle East & North Africa couplings 

message: Re Coupling (railway)#Dual coupling: Locomotives and some freight cars of the Indian Railways are fitted with a 'transition coupler' that incorporates a screw coupling hook within an SA3 coupler: the head of the coupler remains in position and does not swing away when not in use. The screw coupling hook is mounted on a lug within the coupler which is built by SAB WABCO.SAB WABCO C-AK  (The previous text made no sense compared to what is shown on the link) Most Indian freight cars use the SA3 coupler alone, without buffers, whereas passenger coaches almost exclusively use screw couplers and buffers. Exceptions are the new LHB coaches imported from Europe, and a few other makes of carriages converted to use knuckle couplers.Coupler conversionCentre Buffer Coupler of AAR typeWhy would passsenger cars use tightlock coulplers and freight cars use SA3 couplers??? I smell rotten fish. It seems/appears that the following diagram is totally misleading . I think I'll revert my revision(s) and get rid of that misleading image Peter Horn User talk 00:30, 19 November 2010 (UTC)
replies: text: Surely AAR not SA3 !    Tabletop (talk) 00:56, 16 April 2012 (UTC)

text: I have made the intended reversion. Now can someone find an appropriate image showing a knuckle coupler with a lug incorporated? Peter Horn User talk 00:55, 19 November 2010 (UTC)
thread_title:  Clarification needed 

message: Peter Horn User talk 00:30, 19 November 2010 (UTC)
replies: text: I have made the intended reversion. Now can someone find an appropriate image showing a knuckle coupler with a lug incorporated? Peter Horn User talk 00:55, 19 November 2010 (UTC)
thread_title:  Refs 

message: A search for "draft gear" points to this article, which doesn't even use the term, let alone describe the subject.  It does seem a logical place for the subject, though. 208.103.155.224 (talk) 09:45, 21 January 2011 (UTC)
replies: text: Added a redirect from draft gear, and a mention in the lead section.
I've never heard of draft gear - have heard of draw gear though...?  — Preceding unsigned comment added by 109.94.137.1 (talk) 13:10, 26 April 2013 (UTC)

text: See Draft gear at work. Peter Horn User talk 05:16, 23 May 2013 (UTC)
thread_title:  Draft Gear? 

message: For Arrow (railcar) & Talk:Arrow (railcar)#Coupler, what is a Budd "Pin and Cup" style? Peter Horn User talk 00:23, 16 April 2012 (UTC)
replies: text: See Railway coupling#WABCO N-Type. Peter Horn User talk 05:21, 23 May 2013 (UTC)
thread_title:  Something new 

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thread_title:  Blacklisted Links Found on the Main Page 

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thread_title:  External links modified 

message: I see that on the sar3 section it is mentioned that Finland use sar3.
That is wrong, they have stayed with Russian gauge but also stayed with screwcouplers. If you go the Helsinki railway station and look at the train to Petersburg you will see that there are buggers and sar3 on the Russian locomotive and an adapter for screw coupler. (I once saw when the adapter got in wrong and they worked with sledgehammer for many minutes to get the adapter out. After they got it out everything worked fine, with the same adapter.)Seniorsag (talk) 15:56, 30 October 2016 (UTC)
thread_title:  Finland and sar3 

message: I saw something about English 3 link and screw coupling.
England for a long time used 3 link, sometime late they invented a triangular link (sometime after the war) which in one position gave the long slack coupling and in the other a short stiff coupling. It was faster but not quite as good as screw.
Reason for slack coupling is that when you are not using rollerbearings you must have slack between the carriages to be able to start rolling on one at a time. after rolling about a ½ turn there are oil back in the bearing and friction is about  nil, but before it is metal to metal and need a high breakavay force. The locomotive can break and start a few carriages at a time but not a long train. The same applies in cold wheater when the snow have melted from brake heat and train have stood long enough for the water to freese. (Worse if driver forgot to release the brakes just before stopping and the brakeblocks are frozen to the wheel! Solution: reverse so the springing in the buffers will enable you to break lose one carriage at a time.)Seniorsag (talk) 16:11, 30 October 2016 (UTC)
thread_title:  3 link coupling 

message: For Eastlake Park Scenic Railway#Carriages, what are Coit's automatic couplings? Peter Horn User talk 14:27, 1 November 2016 (UTC)
replies: text: No answers yet. Peter Horn User talk 02:14, 1 February 2019 (UTC)
thread_title:  Yet another new one 

message: thumb|Schwab coupler type FK-15-10
For SZU Be 510, what is a Schwabe coupler? Peter Horn User talk 02:51, 13 December 2016 (UTC)
replies: text: Perhaps it should be Schwab coupler? Peter Horn User talk 14:58, 14 December 2016 (UTC)
replies: text: Files added. Peter Horn User talk 15:52, 14 December 2016 (UTC)
replies: text: Make that Schwab coupler, see Railway coupling#Gallery. Peter Horn User talk 16:06, 14 December 2016 (UTC)
replies: text: Make that Schwab coupler. Peter Horn User talk 19:25, 22 September 2017 (UTC)
replies: text: See also Railway coupling#Gallery It looks like the two files (images) feature the same coupler. Peter Horn User talk 13:01, 1 February 2019 (UTC)
thread_title:  '''Schwabe coupler''' 

message: In :de:Kupplung (Bahn) there is :de:Trompetenkupplung. Peter Horn User talk 19:16, 22 September 2017 (UTC)
replies: text: That would probably be the Bell-and-hook coupler or perhaps also the Johnston coupler. Peter Horn User talk 02:02, 1 February 2019 (UTC)
thread_title:  Another one 

message: Railway coupling#Schwab coupler. What does TRN stand for? Peter Horn User talk 17:14, 11 February 2021 (UTC)
replies: text: I found Transports Régionaux Neuchâtelois Peter Horn User talk 17:19, 11 February 2021 (UTC)
thread_title:  TRN 

message: Is this in any way related to Railway coupling#Wedgelock coupler? Peter Horn User talk 17:15, 16 December 2021 (UTC)
replies: text: No. The firm has only been going since 1987, whereas the Wedglock coupler used on the London Underground has been around since the introduction of the 1935 Tube Stock. Besides that, the couplings described are means of attaching a bucket, shovel etc. to an excavator. Totally different. --Redrose64 🌹 (talk) 22:34, 16 December 2021 (UTC)
thread_title:  Wedgelock coupler 

message: What are the maximum trailing loads for the different types of coupling?  Consider no mid-train locomotives and/or end-of-train locomotives. ----MountVic127 (talk) 02:47, 19 April 2022 (UTC)
thread_title:  Loads 

message: The gallery that User:Peter Horn is repeatedly trying to insert makes this article nigh unreadable. The gallery, set to a height of 300px, takes up the entire screen, and the caption on one of the images becomes massively distorted. The images in that section should be left as thumbnails. This is bad enough when I'm looking at it on my PC, on mobile the article most certainly becomes unreadable. Trainsandotherthings (talk) 01:06, 23 September 2022 (UTC)
replies: text: What is the problem? Ding things your way leaves for immage/files detached from and floating away from the pertinent sections
*
*
*
*thumb|Transition era AAR knuckle coupler. The gap in the knuckle accommodates the link of a link and pin coupler and the vertical hole in the knuckle accommodates the pin. 
Peter Horn User talk 01:48, 23 September 2022 (UTC)
replies: text: As I said above,  Trainsandotherthings (talk) 01:50, 23 September 2022 (UTC)

text: Issues with images not lining up with relevant text can be addressed by the use of things like Template:Clear, not just turning everything into giant galleries. Trainsandotherthings (talk) 01:52, 23 September 2022 (UTC)
replies: text: There are plenty of galleries in the article already, one or two more is not really terribly. Peter Horn User talk 03:48, 23 September 2022 (UTC)

text: Regardless, the caption on one immage is way too long anyway. Some of it should be incorporated in the section itself Peter Horn User talk 02:00, 23 September 2022 (UTC)
replies: text: On that point I agree. That should be in the text. Trainsandotherthings (talk) 02:08, 23 September 2022 (UTC)
replies: text: @Trainsandotherthings Could you have a kick at it? Peter Horn User talk 04:21, 23 September 2022 (UTC)
thread_title:  Enough with the galleries 

message: The article is primarily a list of types, and it simply tries to be comprehensive about listing every type that is or has been used.  That's great and is highly valuable, but it would be very helpful to have some kind of summary of the main types in use now.  It could be that the section listing different types could start with a category that is the main types in use now, followed by types that are in use limited areas or applications, followed by obsolete or mostly obsolete types.  Or it could be a section before that, that gives a quick overview of the main types in use now without as much detail about them.  This could be part of the lead.  Another way to address this would be to have a table of types and where and when they have been used.
I don't have enough expertise to do this myself, so it would be great if somebody who knows more did it. Ccrrccrr (talk) 13:56, 19 February 2023 (UTC)
thread_title:  Needs a summary of types currently widely used 

message: The accident subsection at the end makes an unsourced statement that different coupler types have different accident rates... followed by two singular accident examples.  In an article currently focused on many many different equipment styles, this subsection seems unhelpful  Remove it? Youblend2 (talk) 23:11, 14 July 2023 (UTC)
thread_title:  Accident subsection: revise or remove