CREAMERY MECHANICS 



287 



Engine Foundation. The engine to run smoothly 

 must be placed upon a solid foundation constructed of 

 hard burned brick laid in cement. Where the ground 

 is soft and loose the brick work must be built upon a 

 foundation of coarse stones laid in cement. 



Fig. 80. Steam cylinder and valve chest. 

 PARTS OF THE ENGINE. 



Steam Cylinder and Valve Chest. These are the 

 vital parts of the engine. A section through the cylinder 

 and valve chest is shown in Fig. 80. A represents the 

 cylinder part, B the valve chest. 



Parts of A: i, cylinder heads; 2, bore of cylinder; 

 3, counter bore ; 4, flanges ; 5, stuffing box ; 6, gland. 



Parts of B: 7 and 7\ steam ports; 8, exhaust port; 



