Source: Wikipedia. Pages: 115. Chapters: Bogie, Coupling, Regenerative brake, Railway air brake, Train horn, Train whistle, Fire-tube boiler, Connecting rod, Vacuum brake, Safety valve, Fusible plug, Voith Turbo-Transmissions, Trolley pole, Valve gear, Injector, Opposed-piston engine, Superheater, Traction motor, Steam locomotive components, Pantograph, Buchli drive, Nathan Manufacturing, Inc., Franco-Crosti boiler, Train event recorder, EMD 645, Cylinder, Dynamic braking, Steam locomotive exhaust system, Combustion chamber, EMD 710, Firebox, Pilot, EMD 567, Baker valve gear, Blastpipe, Steam locomotive condensing apparatus, Feedwater heater, Mechanical lubricator, Long hood, Jacobs bogie, Booster engine, Giesl ejector, Smokebox, Driving wheel, SCOA-P wheel, Thermic siphon, Snifting valve, Cab, Holcroft valve gear, Trailing wheel, ALCO 251, Kunze-Knorr brake, Gölsdorf axle, Leading wheel, Canadian comfort cab, Chimney, Reverser handle, Crosshead, Krauss-Helmholtz bogie, Lateral motion device, Klien-Lindner axle, Adams axle, Locomotive frame, Hancock air whistle, Footplate, Russia iron, Coupling rod, Jackshaft, Pony truck, Countersteam brake, UIC 568, Dead-man's vigilance device, Bissel truck, Short hood, Philadelphia boiler explosion 1815, Mansell wheel, Kirchweger condenser, Flaman Speed Indicator and Recorder, Blomberg B, Drawbar, Sandbox, Beugniot lever, Buffer, Johnson Bar, Counter-pressure brake, Smoke deflectors, Kuhn slide, EMD 265, HT-C truck, Luttermöller axle, RK 215, Belpaire firebox, Running gear, Driver's brake valve, Schwartzkopff-Eckhardt II bogie, Lempor ejector, Radial axle, AAR type A switcher truck, Boxpok, Radial steering truck, Lemprex ejector, Piston rod, Steam dome, Yaw damper, Capuchon, Kylpor ejector, Backhead, Underframe. Excerpt: A coupling (or a coupler) is a mechanism for connecting rolling stock in a train. The design of the coupler is standard, and is almost as important as the railway gauge, since flexibility and convenience are maximised if all rolling stock can be coupled together. The equipment that connects the couplings to the rolling stock is known as the draft gear. The different types of coupling do not always have formal or official names, which makes descriptions of the couplings in use on any railway system problematic. Traditional buffer-and-chain coupler Two cars coupled Chain coupler detail (train in shunting mode) Cars coupled in ride modeThe standard type of coupling on railways following the British tradition is the buffer and chain coupling used on the pioneering Liverpool and Manchester Railway of 1830. These couplings followed earlier tramway practice but were made more regular. The vehicles are coupled by hand using a hook and links with a turnbuckle-like device that draws the vehicles together. In Britain, this is called a screw coupling. Vehicles have buffers, one at each corner on the ends, which are pulled together and compressed by the coupling device. This arrangement limits the slack in trains and lessens shocks. In contrast, Janney couplers encourage comparatively violent encounters in order to engage the coupling fully. The earliest buffers were fixed extensions of the wagon frames, but later spring buffers were introduced. Inefficient and slow, the European system is relatively unsafe because it requires manual coupling between vehicles, exposing workers to the risk of being crushed. However, there is no need for the worker to go between vehicles while they are moving, which.