FORCED-COOLED TRANSFORMERS 



ir,3 



of the Pennsylvania Power and Water Co. The boiler- 

 plate shell is riveted to a cast-iron base to which the trans- 



.'. 

 I'THI.T eon . ; . MM interior view 



tr;iM-f..nn. r ..f tli.- - type, built by th.- Am. ncai; ' 



