Wide to Gauge Trap Points

[Alasdair]

We use them on the Underground for centre turnback sidings, for example at Rayner's Lane. The neat part is that each switch rail is paired with a point forming the other half of a crossover from the running line, so 2 levers control 4 point machines in three switches. As Peter mentioned above it makes the point to point locking nice and easy, and sorts out flank protection too. Each numbered pair locks the other normal, so three states are possible; 1) both normal = through running, and siding trapped, 2) Entry crossover reverse & exit direction line locked for through running, 3) Exit crossover reverse & entry direction line locked for through running.