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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 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.
Janney coupler, also known as AAR, APT, ARA, CB, center buffer, knuckle, MCB or tightlock coupler [4] [5] Johnston link and pin coupler; link and pin coupler; Miller coupler; Norwegian coupler, also known as chopper or Jones coupler; pin and cup coupler (WABCO N-Type) SA-3, also known as SovietAuto-3, AK69e, CA-3, Russian or Willison coupler
Alternatively it is a short length of pipe with two female National pipe threads (NPT) (in North American terms, a coupler is a double female while a nipple is double male) or two male or female British standard pipe threads. If the two ends of a coupling are of different standards or joining methods, the coupling is called an adapter. Examples ...
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Animated Oldham coupler. An Oldham coupling has three discs, one coupled to the input, one coupled to the output, and a middle disc that is joined to the first two by tongue and groove. The tongue and groove on one side is perpendicular to the tongue and groove on the other.
Side view of a 1.5 to 2.5 inches (38 to 64 mm) adapter. National Hose thread (NH), also known as National Standard Thread (NST). It is the most common type of fire hose coupling used in the United States. The male and female straight (non-tapered) threads screw together and the connection is sealed with a gasket.
The price had risen to $3,000 before eBay closed the auction. [8] [9] In May 2006, the remains of U.S. Fort Montgomery, a stone fortification in upstate New York built in 1844, were put up for auction on eBay. The first auction ended on June 5, 2006, with a winning bid of US$5,000,310.
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