Re: Catchpoints - what are they?

[mack <mack@ncifcrf.gov>]

signal_spotter@my-deja.com wrote:
> 
> Joseph,

The file arrived just fine here. Looks like Linux and Windows
are compatible :-)

> Loop lines are the adjacent line to the main line. I'll try to explain
> it with a diagram.

so a loop isn't neccessarily a loop (closed circle)?

> 
>   -0-0 S1  loop line         S2 -0-0  / catchpoint P10A (OL1 via P10N)
> --+--------------0---------------+---/
>         T1       OL6      T2          \
>                  via P10R              \
>                                         \
>   -0-0 S4  main line    T4   S3 -0-0     \ points P10B  T6  OL1/4
> --+--------------0---------------+--------------+-----------0--
>         T3       OL6 via P10N        T5   S5 0-0-      S6 0-0-
> 
> So hopefully the diagram worked out. Anyway the legend is as follows:
> 
> -0-0   = signal, S1 denotes lever 1 etc
> --+--  = track with blockjoint
> --0--  = track with blockjoint that's an overlap point ie OL6 is the

Yow. Let me think about this a little bit. I've printed it out. I'm sure 
this will be obvious eventually. Do train drivers sit for exams on this
stuff, like the pilot of a plane has to?

> Anyway I hope this helps explain it a bit better.

I may be back to you on this one. Thanks for the layout.

Joe

-- 
Joseph Mack, NA3T, FM05lw EME(B,D) 
AZ_PROJ map server at http://www.wm7d.net/azproj.shtml
mailto:mack@ncifcrf.gov