Steam feed is taken from the bottom of the boiler, through the burner flame for superheating, and out to a compression fitting on the valve chest.
12.
The valve chest also contains inserts or liners, which increase the accuracy of the parts and permit ready adjustment when the old liners are worn by use.
13.
The valve chests are usually on top of the cylinders but, in older locomotives, the valve chests were sometimes located alongside the cylinders and inserted through slots in the frames.
14.
The valve chests are usually on top of the cylinders but, in older locomotives, the valve chests were sometimes located alongside the cylinders and inserted through slots in the frames.
15.
A "'timing or valve chest "'is a compartment on an internal or external combustion engine ( e . g . gasoline or steam engine ) which provides access to the tappets and valves.
16.
John Tregoning, of Brooklyn, N . Y ., has patented an improved Steam Valve for pumping engines, which consists in a circumferentially grooved piston rod, which acts as a valve, and in passages that lead from the ends of the valve chest to and across the cylinder heads, and to the exhaust receiver of the cylinder, the said passages being crossed between the valve chest and cylinder heads.
17.
John Tregoning, of Brooklyn, N . Y ., has patented an improved Steam Valve for pumping engines, which consists in a circumferentially grooved piston rod, which acts as a valve, and in passages that lead from the ends of the valve chest to and across the cylinder heads, and to the exhaust receiver of the cylinder, the said passages being crossed between the valve chest and cylinder heads.
