ARMATURE WINDINGS. 



439 



two brush sets as shown in Fig. 57. This winding is singly 

 reentrant. 



Fig. 58 shows a six pole drum duplex lap winding having 60 

 inductors. The dotted lines and shaded commutator segments 



Six-pole drum duplex lap winding, doubly reentrant. Z= 60, front pitch = 1 1, 

 back pitch = -j- 7, commutator pitch = 2, number of paths ='12. 



Fig. 58. 



represent a complete simplex lap winding having 30 inductors, 

 and the full lines and blank commutator segments represent 



