Post by mrfs42 on Feb 6, 2008 7:42:15 GMT
I've been suffering from insomnia lately, and my usual stock of timetables and translating things have't been helping - so I've been working my way along the bookcases. As a result I've got a quick couple of questions on KWS signalling that have been puzzling me for the past few early mornings.
9 lever frame - single track.
Were all levers in use on this frame? If the locomotive left behind by a departing train ran out behind the departing train would it have been held by a shunt signal near the bufferstops? Making the installation with all 9 levers in use: shunt, twin arm starter from platform, points, facing point lock, wrong direction shunt for the light engine, advanced starter somewhere under Swan Lane, outer home on the approaches from Borough?
22 lever frame - single platform
Even using the 1892 Stockwell plan as a 'serving suggestion' with every move signalled (signals for both possible directions at the four corners of the crossover), separate facing point locks for opposite ends of crossover points, an advanced starter [1] and an outer home I can only get up to a maximum of 16 levers used out of a total of 22. Most accounts (well, those I can find in my insomnia) state that there were 5 spares here - as above was there a shunt signal to hold light engines in the platform or were there in fact two advanced starters - one to hold light engines prior to shunting back and another nearer Borough?
[1] I guess that the reversed picture in Connor's small disused LU stations book is one (if there were two) of the advanced starter?
9 lever frame - single track.
Were all levers in use on this frame? If the locomotive left behind by a departing train ran out behind the departing train would it have been held by a shunt signal near the bufferstops? Making the installation with all 9 levers in use: shunt, twin arm starter from platform, points, facing point lock, wrong direction shunt for the light engine, advanced starter somewhere under Swan Lane, outer home on the approaches from Borough?
22 lever frame - single platform
Even using the 1892 Stockwell plan as a 'serving suggestion' with every move signalled (signals for both possible directions at the four corners of the crossover), separate facing point locks for opposite ends of crossover points, an advanced starter [1] and an outer home I can only get up to a maximum of 16 levers used out of a total of 22. Most accounts (well, those I can find in my insomnia) state that there were 5 spares here - as above was there a shunt signal to hold light engines in the platform or were there in fact two advanced starters - one to hold light engines prior to shunting back and another nearer Borough?
[1] I guess that the reversed picture in Connor's small disused LU stations book is one (if there were two) of the advanced starter?
