If any of my fellow S scaler is interested.....

Simon

-----Original Message-----
From: Simon Parent
Sent: Friday, November 05, 2004 5:54 PM
To: [EMAIL PROTECTED]
Subject: RE: [cdn_branchline] Re: Question on a steam locomotive
appliance


Thanks very much Brian.

I think you are right on the money. I found 2 diagrams in loco cycl. 1922
that illustrate it. It is even mentioning as you said that it should be
mounted "in place of moderate warmth."

I posted temporally the 2 diagrams for those who are interested.

See:

http://www3.sympatico.ca/sparent2/question/airsignal1.jpg


and

http://www3.sympatico.ca/sparent2/question/airsignal3.JPG

Obviously, CN machinist never bothered changing the location of this device
on 923. I don't have a engineer side when numbered 93 so I don't know if was
eventually changed. Maybe someone could confirm that.

Thanks again
Simon

-----Original Message-----
From: wrecksdale [mailto:[EMAIL PROTECTED]
Sent: Friday, November 05, 2004 1:25 AM
To: [EMAIL PROTECTED]
Subject: [cdn_branchline] Re: Question on a steam locomotive appliance




The part in question, may be an air valve. Note that it is located
near the outlet of the main reservoir. I have a book titled (Up to
Date) Air Brake Catechism, by Robert H. Blackall, October, 1898.

I suspect it is an air reduction valve, to maintain air pressure in
the Train Air-Signal System at 45 P.S.I. It is stated that: It was
formerly customary to locate them [reducing valves] outside, next to
the main reservoir, but now [1898] good practice locates them inside
the cab where they cannot freeze in winter.

The signal walve and whistle were usually located inside the cab,
under the engineer's or fireman's seat.

The whistle signal was used on passenger trains by the conductor, to
communicate with the engineer.

Brian D. Westhouse

--- In [EMAIL PROTECTED], "cn.in.s" <[EMAIL PROTECTED]>
wrote:
> Sorry for the cross posting, I was wondering if someone could help
me
> identify this appliances (click on the link below). I think it
might be an
> oil distributor after flipping pages on my 1941 locomotive
cyclopedia but
> not sure.
>
> It is on a CN mogul class E10a (923 / 93)and it is the only one of
its class
> that have it (at least visible) under the running board. I don't
remember
> seeing it on any other engine class or type after looking dozens
of photos
> and books.
>
> Help will be appreciated.
>
> Thank You
>
> Simon Parent
> Montreal
>
> http://www3.sympatico.ca/sparent2/question/appliance.jpg







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