ENGINE No. 34. 141 



Engine No. 34 is a cross compound with horizontal jacketed 

 cylinders and unjacketed receiver. Steam supplied to the low- 

 pressure cylinder first circulates through the jacket space, 

 entering at the bottom at a central opening. The jackets are 

 drained into tanks, which are emptied by means of pumps 

 operated by the engine. The water of condensation from this 

 source during the tests amounted to 600 Ibs. per hour, or 

 about 7 jo of the total quantity of steam used by the engine. 

 The condenser is of the jet type with a direct connected air- 

 pump. Steam is supplied from horizontal return tubular boil- 

 ers. A calorimeter test showed that the amount of moisture 

 was T 2 o of 1 %. The exhaust valves and pistons of both 

 cylinders, and the steam valves of the low-pressure cylinder 

 were found to be practically tight. The steam valves of the 

 high-pressure cylinder showed some leakage. The load con- 

 sisted of cotton machinery. 



