ENGINE No. 31. 



Simple Non-Condensing Engine. 



Kind of engine Four valve (Corliss) 



Number of cylinders ... 2 



Diameter of each cylinder 



Diameter of each piston rod 



Stroke of each piston 



Clearance 



H.P. constant for one Ib. in.e.p. one rev. per minute . 



Inside diameter of steam pipe 



Condition of valves and pistons regarding leakage . 



Data and Results of Feed-Water Tests. 



ms. 

 ins. 



ins. 



16 



21 

 42 



2.5 % 



.042 H.P. 



7 ins. 



Fairly tight 



Measurements based on Sample Diagrams. 



Engine No. 31 has a pair of cylinders drawing steam from 

 horizontal return tubular boilers. There was only a small 

 amount of leakage in any of the valves and pistons. The 



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