6 ELEMENTS OF ELECTRICAL ENGINEERING. 



Chalmers Company, is shown in Fig. 6. A small machine of 

 this type manufactured by the General Electric Company and 

 arranged for mounting on the shaft of the driving engine or 

 water-wheel, is shown in Fig. 7. Figure 8 shows the revolving 

 field magnet of this machine, and Fig. 9 shows one of the lami- 

 nated pole pieces and one of the field coils. This field coil is 

 made of heavy copper strap wound edgewise and insulated by a 



Ffg. 8. 



paper strip laid between the turns of the copper strap. The two 

 collector rings shown in Figs. 6 and 7 serve for the delivery of 

 direct current to the revolving field magnet, and the stationary 

 armature terminals are connected directly to the receiving circuits 

 in each case. 



Figure 10 is a view of a portion of the revolving field magnet, 

 and Fig. 1 1 shows a portion of the inner face of the stationary 



