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loose-coupled (not comparable)

  1. (rail transport, Britain, historical) Of older railway wagons, having a chain coupling between them, without the buffers on each wagon touching those of the next wagon when the train was in motion.
    • 1961 December, “Talking of Trains: Derailment near Laindon”, in Trains Illustrated, page 717:
      The line here rises in the up direction, for the most part on a 1 in 132 gradient, and three spring-operated catch points—Basildon West, Basildon and Vange—are provided at intervals on the up line between the two stations, to derail any runaway wagons of a loose-coupled freight train.