ENGINE No. 20. 



Simple Condensing. 

 Kind of engine ....... ......... 



Number of cylinders , ............. 2 



Diameter of each cylinder ............. 28 



Diameter of each piston rod 



Stroke of each piston 



Clearance 



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



Inside diameter of steam pipe 



Inside diameter of exhaust pipe 



Condition of valves and pistons regarding leakage 



Data and Results of Feed- Water Tests. 



Four valve 



ins. 

 ins. 

 ft. 



.3694 H.P. 



9 ins. 



10 ins. 



Some leakae 



Measurements based on Sample Diagrams. 



Engine No. 20 has a pair of cylinders with gridiron unbal- 

 anced slide valves. It is fitted with a jet condenser, operated 



97 



