The design incorporated a single horizontal cylinder enclosed in a return-flue boiler.

This is a long horizontal cylinder with a single large flue containing the fire.

The bottom third of the horizontal cylinder was full of liquid, and it glowed.

Battles' design had horizontal cylinders connected to the drive shaft through a 2-speed transmission.

It had the appearance of a small searchlight projecting from a horizontal cylinder that was set on a metal post.

The engines mainly had six horizontal cylinders and were made in several sizes:

For the first time horizontal cylinders were mounted at the front of the locomotive outside the frame.

The machines had two horizontal cylinders, one high and one low pressure.

The general layout is that of a squat horizontal cylinder.

The outside Stephenson valve gear moved the valves on top of the horizontal cylinders.