The valve gear is arranged for operation either automatically or by hand.
This is usually effected by changing the eccentric or valve gear.
The effort of the piston to rise supports the weight of the valves and valve gear.
Some of the most important details of a steam engine are those of its valve gear.
The above engraving, which is a side elevation of the cylinder, shows the valve gear complete.
What is to be done if the engine breaks down other than valve gear?
Illustrations of various valves and valve gear with their principles of operation are given.
The steam pressure on the piston supports the weight of the valves and valve gear.
The chief application of the eccentric is in the steam-engine, where it is used for working the valve gear.
The governor, the Corliss valve gear and the triple compound expansion.