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London & North Western Railway Society
Glossary for the LNWR Society

Glossary Results for Word "Coupling"

Coupling Part of the draw gearExplain 'Draw Gear', device for connecting one vehicle to the next. Couplings on goods wagons were simply three linksExplain 'Three Link Coupling' of stout chain (vehicles so connected were termed “loose coupled”Explain 'Loose Coupled'.) See also InstanterExplain 'Instanter coupling' couplings.
Couplings on passenger rated stock were slightly more sophisticated, with the central link being replaced by a screwExplain 'Screw Coupling' thread which enabled the coupling to be adjusted so as to keep the adjacent buffers in contact and under compression so as to avoid surging and oscillation.