The Steam Engine Familiarly Explained and Illustrated With an historical sketch of its invention and progressive improvement; its applications to navigation and railways; with plain axioms for railway speculators

CHAPTER VII.

Chapter 722 wordsPublic domain

DOUBLE-ACTING STEAM ENGINE, _continued_.

On the Valves of the Double-acting Steam Engine. -- Original Valves. -- Spindle Valves. -- Sliding Valve. -- D Valve. -- Four-Way Cock. 108