"We welded the wrapper sheet to the boiler tube, welded on the
steam dome and then dropped the firebox back in and welded in the mud ring, and started putting in stay bolts, using 3/4-inch hot-rolled round stock.
Think back to thermodynamics 101: this point is the top of the
steam dome.
* Skin-pack
steam dome features skin-tight film that maximizes appearance and shelf life, expands for controlled-steam cooking and peels easily away for serving right from the tray.
At first the steam escape valve and eventually a special long nozzle connected to a valve in the
steam dome of the early espresso machines were employed to obtain steam for the milk.
"What makes it really odd," Steve says, "is that the smokestack passes through the
steam dome. Most boilers have the
steam dome in the center of the boiler, but on this one it's up front so the smoke can go through the
steam dome.
"What Wright did was bring the horizontal
steam dome from England," Dave explains.
It uses a piston valve located in the top of the boiler's
steam dome, held down by a lever connected to an adjustable Chatillon spring balance.
"After that, I took a piece of pipe about the right size for a model steam engine, and started adding things: the
steam dome, firebox and so on."