Conner chimney fitting

Any aspect related to the prototype stock.
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Steve Parsons
Posts: 426
Joined: Thu Jun 12, 2014 9:01 pm

Conner chimney fitting

Post by Steve Parsons »

Ok ok I know I should know this and I'm sure I've seen some one ask this same question either on here or another forum fairly recently but what is the item fitted at the base of the back of the chimney on original Conner locomotives? It looks like it could be a lubricator but I'm just guessing.
Conner chimney close up.jpg
Conner chimney close up.jpg (11.25 KiB) Viewed 4219 times
Thanks for any help Steve
(Got a feeling I'm going to kick myself with this as I'm sure I know it but they always say the brain goes first)
Steve Parsons
Posts: 426
Joined: Thu Jun 12, 2014 9:01 pm

Re: Conner chimney fitting

Post by Steve Parsons »

Well I guess I can draw some comfort from the fact that looking at the views this thread has had there's at least 30 other people on this forum who haven't got a clue either.

I ran this question on the RM forum as well and have had some interesting suggestions but one idea that came up a couple of times is the suggestion that it might be some sort of lubricator for the regulator does that sound plausible to anyone?
Jim Summers
Posts: 916
Joined: Tue Aug 14, 2012 8:54 pm

Re: Conner chimney fitting

Post by Jim Summers »

Steve,
I wasn't quick enough in replying, but it is indeed a displacement lubricator (also known as a Roscoe lubricator).

JIm S
Dave John
Posts: 205
Joined: Wed Aug 15, 2012 7:42 am

Re: Conner chimney fitting

Post by Dave John »

Well, I got the lubricator bit right.

But the handrail seems to have a rod down it, operating some sort of mechanism in the chimney. Some sort of damper plate to help firing ?

Just wondering....
Steve Parsons
Posts: 426
Joined: Thu Jun 12, 2014 9:01 pm

Re: Conner chimney fitting

Post by Steve Parsons »

Thanks Jim but a lubricator for what?

Or Was the suggestions right in that it was for the regulator assembly?
Jim Summers
Posts: 916
Joined: Tue Aug 14, 2012 8:54 pm

Re: Conner chimney fitting

Post by Jim Summers »

Steve,

if I may quote from one of my learned friends who specialises in locomotive history of the period:

"The lubricant was fed into the regulator (or maybe just the header in the case of an engine with a domed boiler) and would then find its way into the valves and even the cylinders as well, supplemented in that case by the tallow cups on the footplate. [Methods of arranging] lubrication in the days before superheating seem to have been surprisingly ad hoc and variable."

Rods running inside the handrails to the smokebox feature on many locomotives. I have always assumed it was to the blower, but am open to being corrected, and doubtless will be.
Incidentally, to represent handrails with the rods emerging, I use in telescopic mode very fine tubes designed for syringes, which the Scalefour Society supplied and may still do.

JimS
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