Redd_Kross wrote:
and with communication between them done largely by bells and block instruments. The mid-way station on the mainline was a significant junction and ended up with four sets of instruments and associated bells (all with different rings).
That sounds really cool!
We haven't had the bell codes here in the US but I've read about them in UK published model railway books since the 1970s. Somebody's layout named "Sherwood Section" used bells an article about it is in a book in the other room here at home.
And that's all that's in my brain about it, other than probably half-correct memory of what the bell boxes and indicators look like.
I'm going to go find the book, will return.
_________________
"There are a thousand things that can happen when you go light a rocket engine, and only one of them is good."
Tom Mueller of SpaceX, in Air and Space, Jan. 2011