127 



cam room. It rn;. :ul usually is. fl 



sc of Ixt stagnant 



.lining any soapy substance. 

 Q. What \\ould you do alter being bothered in 



A. Gean out the boiler and get better \\ JKM- 



Q. How would you manage yur pumps* while the 



is foaming: 5 

 Keep them running full. 



Q. w: 



A. In order c up for the extra an 



or going out with the steam. 



Q v 



>n is steam retained or admitted in front 

 of the piston head at the finish of stroke or when the 

 engine is on "center." , 



Q. What is it for? 



It helps to overcome the "inertia" and momcn- 

 of the reciprocating parts of the engine, and en- 

 ables the engine to pass the center without a jar. 



Q. How would you increase the cushion in an en- 

 gine? 



A. By increasing the lead. 

 Q. What is lr 



;ie amount of opening the port shows on the 



