[PRCo] Re: Fwd: Re: Alexander

[Edward H. Lybarger]

The siding may have been moved to shorten waiting times, or it may have been
part of a reconstruction project on the eastern end of the
Canonsburg-Houston PRW to eliminate a bridge.  There is a file on something
there but I haven't studied it beyond knowing that two R/W maps exist with
it and they are different.

The Former EHL

-----Original Message-----
From: pittsburgh-railways-bounce at lists.dementia.org
[mailto:pittsburgh-railways-bounce at lists.dementia.org]On Behalf Of Jim
Holland
Sent: Monday, February 18, 2002 3:47 PM
To: pittsburgh-railways at dementia.org
Subject: [PRCo] Re: Fwd: Re: Alexander



Good Morning!

> "Fred W. Schneider III" wrote:

> 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.)

	A million thanks for the clarification on the Nachods, Fred.

	Was there a counting device integral with the Nachods that allowed a
second car to follow the first into single track?

	There is a photo on pg.4 of  *Interurban News Letter* (INL) of January
1945 which shows a 3800 roadside by signal 140 as a new US&S
installation.   This photo is identified with the Charleroi line but ED
Lybarger has identified the location as the Van Eman//Murry Hill area of
the Washington line so the cameraman is facing south.
	A photo I have of 1711 at Richfol southbound shows the car has just
cleared the single track with the standard US&S 3-aspect plus one standard
visible for northbound cars.
	My thought on Alexander//Arnold Nachods is that the siding was originally
Banfield and moved to Alexander so rather than continue with US&S that
Nachods were easier to install (IF US&S was originally used - don't know
the date of the move from Banfield to Alexander.

>> 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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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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