ENGINE No. 82. 



Four valve cross compound, 24" and 46" x 48". Speed, 

 75 revolutions per minute. 



The high-pressure cylinder of this engine is of the four-valve 

 type. The low-pressure cylinder has slide valves with cut-off 

 adjustable by hand. These diagrams show the effect upon the 

 distribution of the load between the cylinders produced by 

 changing the cut-off in the low-pressure cylinder. In one case, 

 No. 82 a, it was set at the % mark, and the other, No. 826, at the 

 | mark. In the former the power developed by the high-pressure 

 cylinder was 408 H. P., and by the low-pressure cylinder 300 

 H. P., while in the latter, the quantities were respectively 

 480 and 222. The diagrams are from the crank end. 





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