Superheaters and Throttle Linkage

[NW Mailing List]

This has been a great discussion for somebody who is trying to learn the 
details of steam locomotive operations.  I hope to hear more along this topic.

Many thanks to Jimmy Lisle for sharing the diagram.  Some of us engineer 
types can't talk without drawing or looking at pictures.
Keep it up!

Rick Huddle
Delaware

     ----- Original Message -----
     From: NW Mailing List
     To: nw-mailing-list at nwhs.org
     Sent: Wednesday, August 27, 2008 10:10 AM
     Subject: Re: Superheaters and Throttle Linkage

     I've always marveled at the 'American' brand front end throttle. It is 
a beautiful complicated casting that uses an array of small valves similar 
to an automobile engine valve that open progressively. The casting also 
includes the superheater connections with what I call their A and B 
chambers for saturated and superheated steam respectively. The whole thing 
rested comfortably and readily accessible beneath the removable panel 
behind the stack. The exterior operating rod and bell crank that Gordon has 
referred to are a clue to where the throttle is.

     It is one of the most modern and sophisticated components of the late 
steam era. It would look good in my living room as a (large) coffee table.

     Ted Goodman (Columbus)