ENGINE No. 94. 



Diagram No. 94 is from the steam pipe of the right-hand 

 cylinder of a pair of double-valve engines, 17" x 24", running 

 at a speed of 154 revolutions per minute. 



ENGINE No. 94 



-60 

 -40 

 20 

 



The main pipe here was 140 feet in length, 10" in diameter, 

 and had 3 short right-angle elbows. The branch pipe for the 

 two cylinders were each 6" in diameter and 8' 'in length, and 

 each contained 2 righkangle elbows. This is the same engine 

 as that referred to as No. 10 in the section on Feed-Water 

 Tests, but it was taken with an indicator having a different 

 scale from the diagrams given in connection with the results 

 of those tests. 



It will be seen in this diagram that the effect of the closing 

 of the valves at the points of cut-off are clearly revealed, but 

 that in other respects the various operations are not clearly 

 denned. Considering that the reciprocations are somewhat 

 rapid, and that the diagram shows the effect of the fluctua- 

 tions produced by both cylinders, it is difficult to make a close 

 study of its various features. 



331 



