Just a few last bits of stuff to finish the article off. Most locomotives have a bell. Bells can be either hand rung with a pull cord, or mechanically operated with air pressure.
Inside the cab you will have some means of actuating that bell so either a cord or a valve handle. If a locomotive has gravity fed sand domes there will be a lever that attached to the base of the sand dome and extends back into the cab through the front wall. You will see a cord for the whistle that either goes through the front wall out to the whistle on the steam dome or some whistles are on the cab roof if the steam dome is inside the cab and the chord will come through the roof.
On the floor in the cab is sometimes a lever that you pull up or push down that is connected to the ash pan. The ash pan is nothing more really than the floor of the fire box. There are doors on it that drop down and dump the ash into a lined pit between the rails.
On a vacuum brake locomotive you will see a little different set up than the positive pressure brake systems like the Westinghouse. The brake handle on these almost looks like a hybrid between the Westinghouse brake lever and an injector. It has an exhaust pipe that exits through the roof of the cab. That device is called the “ejector” and looks like this
Amazon book on Eames Vacuum Brakes
i have a fondness for the Eames vacuum brakes. One because the Coeur d’Alene Railways and Navigation company used them exclusively for their short existence and because they are just different. Unlike the Westinghouse system they are steam actuated and use a venturi like an injector. You pull on handle that is horizontal and this “turns on” the brakes by applying steam to the venturi creating negative pressure. With that on then you can pull on the vertical lever which regulates how much vacuum is applied to the brakes and thereby determining how much brake is applied.
I think that’s about it. I hope it helps. If you are going to want to actually model this stuff I highly recommend downloading and reading and following David Fletcher’s build article. There is also a lot of diagrams that show the various stuff. And I will always try and answer questions.
I hope you enjoyed this and found it useful.