DESCRIPTION OF THE LOCOMOTIVE.
In order to become an engineer, the first thing necessary is to gain a thorough understanding of the peculiarly complicated machine which it is the duty of engineers to control.
This is of the highest importance, and a careful study of this chapter and the diagrams accompanying it will be of great assistance to anybody who contemplates becoming an engineer.
There are locomotives and locomotives, all built on the same general plan, but varying in details according to the ideas of their builders, and the class of work which they are expected to perform.
An American Locomotive with Two Driving Wheels.
Thus for elevated roads and short surface lines, devoted principally to passenger travel, locomotives of light capacity are employed; costing less at the start, and being less expensive to run.
American Locomotive With Four Driving Wheels.
The "dummy" is even a grade below these, being practically a stationary engine set on a car with driving wheels attached.