54 



ENGINE TESTS. 



Engine No. 4 exhausts into a jet condenser with direct-con- 

 nected air-pump. One end is run condensing, and the other 

 end non-condensing. The boilers are of the vertical type, 

 which superheat the steam. Steam was supplied for other 

 purposes than power, and the amount thus used was deter- 

 mined and allowed for. There was slight leakage of the steam 

 valves. The exhaust valves and piston were practically tight. 

 The load was that of a cotton mill. 



ENGINE No.4 



80- 



60- 



40- 



20- 



80^ 



60- 



40- 



20- 



0- 

 10- 



Head End 



Crank End 



