I always thought that the steamdome provided steam to the cylinders, but this drawing appears to show otherwise.
What am I missing?
Look in the same book on Google referenced for the crosshead, and search for steam dome.
In the diagram you referenced in your above reply look at items 13, 14, 16, & 20. the dry pipe (Item 16) is the input to the superheater tubes, the output of the superheater tubes (item 20) go down the steam-pipe (not labeled in this diagram), which is a ‘Y’ one branch going to each of the steam chests (i.e. right & left) Item 23 shows the right steam chest only.
Discussion of the steamdome is found here:
Figure 41 is on page 77
I was right, the steamdome provides steam to the cylinders.
The steam dome is where the steam collects and is fed to the engine.
In older steam engines, the throttle is in the steam dome. The output from the throttle either goes directly to the cylinders or through the superheaters and then to the cylinders.
In newer steam engines, the steam from the steam dome goes to the superheaters and from there, it goes through the throttle and then to the cylinders.
Yes, and the explanation is on page 110-111, Questions: 115, 116, 117.
It houses the throttle mouth assembly. Its purpose was to provide a raised area in the boiler where steam could collect above the boiling water as not to allow any to be drawn into the steam pipe and hence to the cylinders, which would be very bad indeed if any did.
Yes sir Vic you are correct and that was called ‘priming’, additionally, one cause of priming was excessive use of the whistle, which would lower the pressure in the boiler rapidly and that could cause ‘foaming’ especially if you had untreated mineralized water, and like you said (priming) that caused problems because water doesn’t compress at all, very bad for pistons.
I dunno–Steve’s asking a whole lot of questions about steam locomotives. I’m torn as to whether that’s a sign that change is a-comin’, or the sky is falling. 
Later,
K
Both! But the only place the sky will fall is at Deer Park! 
…but steam doesn’t rise in “Coldstream” water…at least not under any great pressure…!!!
You often see a mist over a cold stream, but that isn’t steam…!!!
I’m happy to see steam in a young fellow’s life. It shows he’s under some minor pressure to advance to higher plains/planes/playnes…!!! There is great hope for young Stephan.
I see a fine steam engine of some sort, gracing his viewing shelf in short order.
Lets be clear fellows…there is a difference between a steam engine and a steam locomotive…steam engines are used in a variety of applications, a STEAM LOCOMOTIVE uses a steam ENGINE to power a train…
Fred Mills said:
....but steam doesn't rise in "Coldstream" water.......at least not under any great pressure.....!!!You often see a mist over a cold stream, but that isn’t steam…!!!
Padre,
Rumour has it that Regner will be producing a RhB G3/4 (aka tank Mogul) next year - or at least present one at the 2009 NTF. If that happens “I need one really badly.”