LMS 4F unknown "steam pipe" any one know it's purpose?

[Londontram]

Here's a picture of LMS 4F 4317 seen working on the former Highland railway in the 1930s

 Can anybody tell me the purpose of the elbowed pipe coming out the lower smoke box and going into the running plate near the edge. Also did it have them on both sides?

   Thanks all - Steve

[Steamport Southport]

Pipe for the exhaust steam injector.

 

 

 

 

Jason

[Londontram]

Thanks Jason possible stupid question but as it doesnt appear to be a normal fitment (ive never seen this on pictures of other 4F) was it the one side only do you know?

Edited June 14, 2021 by Londontram
Add info

[New Haven Neil]

2 minutes ago, Londontram said:

Thanks Jason possible stupid question but was it the one side only do you know?

 

Yes just the one side - only one exhaust steam injector was fitted, when they had one - not always IIRC.

[Steamport Southport]

Yes. It seems it was always the opposite side from the ejector pipe (the pipes fitted to the side of the boiler).

 

This one is on the other side.

 

https://www.rail-online.co.uk/p144309771/ec82a188

 

I seem to recall that some 2Ps had them as well.

 

I can't find that much information on them. Some here on the Brassmasters website. Click the red link that says Prototype Notes.

 

http://www.brassmasters.co.uk/4F_etches.htm

Edited June 14, 2021 by Steamport Southport

[Londontram]

Thanks everyone that's been extremely helpful.

   Steve

[Poor Old Bruce]

Where they were fitted, it was on the fireman's side i.e. left-hand drive locos had them on the right and right-hand drive locos had them on the left.

[kevinlms]

1 hour ago, Poor Old Bruce said:

Where they were fitted, it was on the fireman's side i.e. left-hand drive locos had them on the right and right-hand drive locos had them on the left.

Yes, that makes sense.