[PRCo] Re: Nachods, Etc.

[Phillip Clark Campbell]

Thank you, Mr.Josephson; nice description.  It is easy to
associate signalling with interurbans but nachods were
extensively used on the city system as well weren't they.
Two that spring to mind immediately are the 49 and 65 lines.
The latter was predominantly bi-directional single track with
passing sidings.  The 49 had significant single track--on Climax
between the loop and Beltzhoover as well as the long stretch
on New Arlington.  All this was controlled with Nachods.
Mr.Brannon has written about experience with Nachods here.

http://www.davesrailpix.com/pitts/htm/bvp140.htm

http://www.davesrailpix.com/pitts/htm/bvp141.htm

Other South Hills lines using Nachods include several different
sections of the 40, the single track at the loop on the 39, and even
the 38A.
http://www.davesrailpix.com/pitts/htm/wvp111.htm

The 1 & 5 lines used single track at their junction as double track
would not fit; then the outer portion of the 5 was single with a siding
and loop, all Nachod controlled.  The 4-line used single track and a

siding to the outer loop.


The 2 & 3 both had single track at their respective loops.  The nearby
94 also had single track and a siding at the outer end to the loop.
http://www.davesrailpix.com/pitts/htm/wvp076.htm

The intersection of California and Brighton Place was single track
because of narrow streets.  The 6, 7, 10, 13, and 14 all used this 

location controlled by Nachods.  The 6-line also had single track to
the outer loop--almost a repeating theme isn't it--but the 6-lacks
a siding.

The 18, 19, 20 were double track but non-clearance on some curves.
These "may" have included Nachods.  Many non-clearance curves
are simply line of sight on a simple turn but where the devil strip
narrowed for a distance nachods were possible.  While turns were
double track the devil strip was significantly reduced on the 64 and 67
in many places, some using nachods.  The 67 also had a small
portion of single track outbound of Rankin.

Neville Island had extensive single track and not a few sidings with
Nachods.  The outer end of the 23 before crossing the Ohio was
single track prw.

The 27 and 28 used Nachods on the famous "S" turn under the PRR
while the outer end of the 28 was purely single track with 2 sidings
and a loop once PCC service began.  I assume the intersection of
Steuben and Noble was Nachod controlled.

The 55 used Nachods to control the single track in the flood control
zone near E.Pgh didn't it.  The 58 had a significant section of single
track with multiple curves.  The much liked Trafford was single track
with 5 sidings--one rather long across the trestle--and a loop.  This
was nachod controlled.  Near the end many of the sidings were not
functional but one assumes it was still Nachod controlled.  While
only a single franchise car operated a trip or two each day other
equipment like charters could be on the line so signalling is needed.
http://www.davesrailpix.com/pitts/htm/wvp196.htm


The 68-line had a portion of multiple curve single track in Duquesne.
http://www.davesrailpix.com/pitts/htm/wvp078.htm

Plummer and 47th used a single track intersection from the Car House
to double track on both streets probably nachod controlled.

Both the Donora and Washington local lines had considerable single
track controlled by nachods, much not shared by the interurbans.

Somewhere on the internet is a photo of two opposing cars meeting on
New Arlington.  Car 1684 was one; it was on a charter in Pat days.  Only
one revenue car was needed for service who apparently thought the
red signal was a failure so he proceeded.  The photo is labeled wrong
indicating 1684 as the service car.  I can't find it; maybe someone has
that photo or knows its location.

Please add to, clarify, or correct the above.  It is interesting to note all
this nachod controlled territory.

 


Phil




________________________________
 From: Ken and Tracie <ktjosephson at embarqmail.com>
To: SCOTT GREIG <m1903a1 at sbcglobal.net> 
Cc: pittsburgh-railways at dementix.org 
Sent: Sunday, December 25, 2011 12:53 PM
Subject: [PRCo] Nachods, Etc.
 
Scott,
Here's that signaling chapter from the 1920s technical book I mentioned. I'm 
"cc'ing" these quick scans to the Pittsburgh Faithful as the PRCo 
interurbans used Nachods on some stretches and West Penn used a manual 
signaling system in places.

Merry Christmas,

K. 


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