[PRCo] Fwd: Re: Alexander

[Jim Holland]

Here is a little more information about signals on the
Interurbans that we discussed more than 1-year ago  (we were
discussing these two photos:::::::

http://davesrailpix.railfan.net/pitts/htm/bvp050.htm

http://davesrailpix.railfan.net/pitts/htm/bvp055.htm :::::::)

JIM

-------- Original Message --------
Subject: [PRCo] Re: Fwd: Re: Alexander
Date: Mon, 18 Feb 2002 10:53:05 -0500
From: "Fred W. Schneider III" <fschnei at supernet.com>
Reply-To: pittsburgh-railways at dementia.org
To: pittsburgh-railways at dementia.org
References: <3C707F78.BD8C35C0 at pacbell.net>

It is not a Union Switch and Signal installation.    Nachod
signals were used on parts of the line.    US&S signals were
used south from Arnold, while Nachods were used northward.  

I never saw a green Nachod aspect in Pittsburgh ... red for
opposing cars, yellow for a car ahead of you, black for
failure or nothing ahead as you approach the signal.   
Signals go from dark to yellow as you enter an empty block.   
I don't know what the third target was for.  

US&S signals were installed on Washington about 1928, except
for areas that involved street paving.    Banfield was in
Houston but I can't remember if it was red dog or asphalt
paving then; I think the former.    EHL knows exactly where
the Nachods were ... I think from Richfol south through
Canonsburg and Arnold north (maybe there were USS in between,
maybe not.)

> Jim Holland wrote:

> Hi Tom!

>         Very interesting.   Might be Nachod and they were
> only 2-aspect - On and Off, Green and Red.   Note the
> contactors in each trolleywire - one to activate the
> signal when entering the single track, the other to reset
> to proceed when clearing the single track.
>         *Maybe*  full blown US&S operated thru track
> circuits were installed later.   My map indicates that it
> is 5,745--feet from the end of double track in Canonsburg
> near Ashland to the center of Alexander (twas
-- Trailing quotes stripped by Listar --

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Waiting for a bus is about as thrilling as fishing,
        with the similar tantalisation that something,
                sometime, somehow, will turn up. 
                        George Courtauld

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James B. Holland

Holland  Electric  Railway  Operation....... 
___"O"--Scale St.-Petersburg Trams Company Trolleycars and...
______"O"--Scale  Parts  mailto:pghpcc at pacbell.net

______Pennsylvania Trolley Museum http://www.pa-trolley.org/
___Pittsburgh  Railways  Company  (PRCo),   1930  --  1950
N.M.R.A.  Life member #2190; http://www.nmra.org

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