412:
174:
392:
218:
278:
357:
131:
262:
372:
242:
323:
154:
193:
339:
17:
277:
411:
116:
coupling was with the automatic coupler (with the buffers retracted), while connection to the locomotive was with the buffer-and-chain system with a screw coupler. Today this dual coupling system has been adopted for all loco-hauled passenger trains in Great
Britain to allow faster shunting operations.
52:
or "knuckle coupler". These are incompatible with each other, but where some railroads have obtained older, less expensive used rolling stock from different countries or regions, instead of having to standardize on one form of coupler, it may be useful to be able to use either type of coupler on a
115:
that lowers to reveal a hook for a screw-type chain coupling. When in use, a pin through the buckeye shank rests in the conventional hook. No chain is provided on dual-coupled vehicles, since the chain on the other vehicle can be used when the knuckle coupler is out of the way (down). Inter-stock
391:
217:
305:
60:
and chain and knuckle couplers on the same car, provided that the knuckle can swing out of the way. Alternatively, either a lug to hold the chain is cast in the body of the coupler or a chain is mounted on top of the coupler. This is also done with an
371:
130:
103:
is placed on the
Russian side, backing up and compressing the buffers so that the chain can be laid on the hook. (That is also the common way of coupling locomotives to or from wagons, faster than unscrewing the link.)
173:
241:
192:
153:
88:
on the opposite side of the knuckle coupler. Most Indian freight cars use the knuckle coupler alone, without buffers, whereas passenger coaches almost exclusively use
99:
Some
Russian locomotives and wagons have buffers together with the central coupler. When coupling to Finnish equipment, a short chain with a block that fits in the
356:
322:
261:
500:
44:
have different couplers depending on the purpose and type of equipment being used and its intended destination. European rolling stock tend to use
425:. The knuckle component has been removed, allowing a pin to drop in the vertical hole in the head to mate with the link forming an ad-hoc coupler.
304:
582:
338:
232:
92:
and buffers. Exceptions are the new LHB coaches imported from Europe, and a few other makes of carriages converted to use
527:
84:: the knuckle coupler remains in position and does not swing away when not in use. The screw coupling is mounted on a
575:
497:
378:
137:
298:
and the
Shibata coupler is shown as swung out of the way. There is a pivot in common allowing both to swing.
610:
605:
467:
462:
348:
310:
654:
626:
568:
442:
248:
160:
107:
British locomotive-hauled passenger carriages adopted a dual coupling system in the 1950s. They have
45:
402:
329:
477:
291:
268:
25:
199:
179:
57:
418:
398:
659:
363:
112:
674:
8:
203:
108:
664:
637:
252:
93:
397:
Transition era AAR knuckle coupler. The gap in the knuckle accommodates the link of a
716:
695:
472:
295:
591:
457:
531:
504:
437:
422:
73:
631:
452:
287:
283:
224:
183:
164:
145:
81:
77:
49:
29:
21:
555:
36:
EMU (right). The dual couplers are mounted to a pivot, allowing both to swing.
710:
649:
405:
and the vertical hole in the knuckle accommodates the pin of either coupler.
89:
41:
382:
228:
644:
344:
314:
100:
62:
679:
515:
447:
33:
66:
560:
202:
13252 fitted with dual buffer-and-chain/janney coupler at the
141:
85:
76:
are fitted with a 'transition coupler' that incorporates a
16:
385:
coupler pockets for moving standard and narrow gauge cars.
53:
piece of rolling stock without having to remove anything.
556:
Adapter piece between Janney coupler and
Willison coupler
231:
fitted to commuter rail multiple units at New York's
294:. The Janney coupler is shown in position on the
708:
125:Indian and British dual couplings with buffers
576:
247:Hybrid coupler allowing automatic as well as
583:
569:
267:A Finnish locomotive with dual coupling {
72:Locomotives and some freight cars of the
362:A Janney coupler adapter installed on a
15:
136:Dual coupling on a modern locomotive. (
709:
564:
235:. The adapter is seen from the bottom
590:
377:This locomotive was derailed by the
48:while American rolling stock uses a
528:"Centre Buffer Coupler of AAR type"
13:
182:fitted with dual buffer-and-chain/
14:
728:
549:
223:Coupling adapter for use between
186:, knuckle is swung out of the way
32:locomotive (left) connected to a
410:
390:
370:
355:
337:
321:
303:
276:
260:
240:
216:
191:
172:
167:swung out of the way (drop head)
152:
129:
111:and a central Buckeye automatic
290:on the right (far side) of the
520:
509:
491:
1:
484:
379:1906 San Francisco earthquake
163:/semi automatic coupler with
138:Indian locomotive class WAG-9
56:It is possible to mount both
140:) The chain is mounted on a
40:Different types of railroad
7:
611:Railway coupling conversion
606:Railway coupling by country
468:Railway coupling conversion
463:Railway coupling by country
430:
381:. The locomotive had three
328:Bell-and-hook coupler with
212:Dual couplings and adapters
10:
733:
119:
46:buffers and chain couplers
688:
619:
598:
443:Bell link-and-pin coupler
636:Type F & H :
417:Dual coupling between
349:bell-and-hook couplers
37:
419:link & pin system
311:Bell-and-hook coupler
227:on a locomotives and
19:
660:Scharfenberg coupler
632:Janney / AAR coupler
399:link and pin coupler
364:Scharfenberg coupler
233:Pennsylvania Station
144:on the right of the
655:Unicoupler/Intermat
251:couplings on Swiss
204:Mid-Norfolk Railway
159:British-style dual
109:retractable buffers
665:Norwegian coupling
638:Tightlock coupling
516:Coupler conversion
503:2009-05-19 at the
38:
704:
703:
627:Buffers and chain
473:Sets of carriages
724:
592:Railway coupling
585:
578:
571:
562:
561:
543:
542:
540:
539:
530:. Archived from
524:
518:
513:
507:
495:
458:Railway coupling
414:
403:Johnston coupler
394:
374:
359:
345:Willison coupler
341:
330:Johnston coupler
325:
315:Willison adapter
307:
280:
264:
249:buffer-and-chain
244:
229:WABCO-2 couplers
220:
195:
176:
161:buffer-and-chain
156:
133:
94:knuckle couplers
732:
731:
727:
726:
725:
723:
722:
721:
707:
706:
705:
700:
684:
615:
594:
589:
552:
547:
546:
537:
535:
526:
525:
521:
514:
510:
505:Wayback Machine
496:
492:
487:
482:
478:Unilink coupler
453:Knuckle coupler
438:Barrier vehicle
433:
426:
423:knuckle coupler
415:
406:
395:
386:
375:
366:
360:
351:
342:
333:
326:
317:
308:
299:
292:Shibata coupler
281:
272:
269:Unilink coupler
265:
256:
245:
236:
221:
207:
196:
187:
177:
168:
157:
148:
134:
122:
113:knuckle coupler
101:central coupler
82:knuckle coupler
74:Indian Railways
12:
11:
5:
730:
720:
719:
702:
701:
699:
698:
692:
690:
686:
685:
683:
682:
677:
672:
667:
662:
657:
652:
647:
642:
641:
640:
629:
623:
621:
617:
616:
614:
613:
608:
602:
600:
596:
595:
588:
587:
580:
573:
565:
559:
558:
551:
550:External links
548:
545:
544:
519:
508:
498:SAB WABCO C-AK
489:
488:
486:
483:
481:
480:
475:
470:
465:
460:
455:
450:
445:
440:
434:
432:
429:
428:
427:
416:
409:
407:
396:
389:
387:
376:
369:
367:
361:
354:
352:
343:
336:
334:
327:
320:
318:
309:
302:
300:
284:JNR Class EF81
282:
275:
273:
266:
259:
257:
246:
239:
237:
225:Janney coupler
222:
215:
213:
209:
208:
197:
190:
188:
184:janney coupler
178:
171:
169:
158:
151:
149:
135:
128:
126:
121:
118:
90:screw couplers
78:screw coupling
50:Janney coupler
30:JNR Class EF63
28:couplers on a
9:
6:
4:
3:
2:
729:
718:
715:
714:
712:
697:
694:
693:
691:
687:
681:
678:
676:
673:
671:
670:Dual coupling
668:
666:
663:
661:
658:
656:
653:
651:
650:C-AKv coupler
648:
646:
643:
639:
635:
634:
633:
630:
628:
625:
624:
622:
618:
612:
609:
607:
604:
603:
601:
597:
593:
586:
581:
579:
574:
572:
567:
566:
563:
557:
554:
553:
534:on 2014-02-21
533:
529:
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517:
512:
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502:
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490:
479:
476:
474:
471:
469:
466:
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461:
459:
456:
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446:
444:
441:
439:
436:
435:
424:
420:
413:
408:
404:
400:
393:
388:
384:
380:
373:
368:
365:
358:
353:
350:
346:
340:
335:
331:
324:
319:
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312:
306:
301:
297:
293:
289:
285:
279:
274:
270:
263:
258:
254:
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243:
238:
234:
230:
226:
219:
214:
211:
210:
206:in April 2009
205:
201:
194:
189:
185:
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175:
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166:
162:
155:
150:
147:
143:
139:
132:
127:
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117:
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105:
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97:
95:
91:
87:
83:
79:
75:
70:
68:
64:
59:
54:
51:
47:
43:
42:rolling stock
35:
31:
27:
23:
18:
669:
536:. Retrieved
532:the original
522:
511:
493:
383:link and pin
347:adapter for
332:adapter link
255:locomotives
180:Mark 1 coach
106:
98:
71:
55:
39:
645:SA3 coupler
288:AAR coupler
146:AAR coupler
63:SA3 coupler
689:Categories
680:Draft gear
538:2014-04-29
485:References
448:Draft gear
296:centerline
198:Prototype
34:115 series
80:within a
67:SAB WABCO
65:built by
20:Combined
717:Couplers
711:Category
696:Couplers
501:Archived
431:See also
675:Drawbar
620:Systems
599:General
421:with a
165:knuckle
120:Gallery
58:buffers
26:Shibata
253:Re 420
200:Mark 2
22:Janney
401:or a
313:with
142:hinge
86:hinge
286:the
24:and
713::
271:)
96:.
69:.
584:e
577:t
570:v
541:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
