The first one is a portable steam engine, they were used just about everywhere from farms to sawmills to run belt driven machinery and were towed around by bullock team or horses.
They were mounted on four wheels , the front wheels could pivot on a turntable mounted under the smokebox.The back wheels on this one had the axle through the extensions with the holes at the back of the firebox.
The cylinder were mounted on top of the boiler barrell at the front, you can see the holes where the saddle was bolted. The flywheel and cranshaft mounted at the back before the firebox.
Dont know who made this one but check out a Marshall Portable to get an idea of what they are like.