Trap & Catch points
Trap points were normaly found where a loop branches off and before it re-joines the mainline also where sidings have no headshunt. I.e. to shunt you would have to use the mainline where by the points would be reversed so shunting move can take place.As years ago where by a pick up freight would uncouple on the mainline and shunt the yard. Catch points on the other hand are spring points which when a train has passed either one or two blades would spring open as to de-rail any wagons that could have broken away from the train and run backwards.So as above description Trap points are worked from a controlling signal box, Catch points are train worked NOTworked by a signal box. Just for information the catch points at the bottom of the Lickey Incline have been clipped out of use pending recovery??????.PHILL. Hope this answers your query.
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