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. 



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Fig. 80.— Steam cylinder and valve chest. 



PARTS OF THE) EINGINE. 



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; 



