ENGINE No. 97. 



Diagram No. 97 is from a 10" steam pipe supplying a 30" 

 x 72" Corliss engine, making 60 revolutions per minute. 



ENGINE No. 97 



-80 



-60 



-40 



-20 





 - 10 



The steam pipe is 108 feet in length from the main header 

 in the boiler-room, and it contains five short right-angle elbows. 

 The fluctuations of pressure here are of much less extent than 

 in any of the preceding diagrams, due in part probably to the 

 relatively light load on the engine. In view of what the pre- 

 ceding diagrams have shown, the real cause of so little variation 

 may be some peculiar arrangement of the pipes which acted 

 favorably. 



335 



