134 



ARMATURE CONSTRUCTION 



In Fig. 159 we have added the two front ends of each turn 

 carrying them to independent commutator segments. But this 

 gives us 192 segments, and we have stated that our winding, 

 which comprises 192 conductors, has one turn, i.e. two conductors, 



FIG. 159. Front-end connections. 



per commutator segment, and hence only 96 segments. Thus we 

 must merge every pair of adjacent segments into a single segment, 

 taking care, however, to take such pairs as are not the neighbour- 

 ing terminals of a single turn, otherwise we should simply obtain 

 a set of 96 short-circuited turns. 



FIG. 160. Elements of Armature Winding Diagram. 



With this precaution we shall obtain the diagram of Fig. 160, 

 in which the dotted radial lines on the commutator are the lines 

 which in Fig. 159 divided the now merged segments. In Fig. 

 161 these dotted lines are suppressed. This is still not quite in 

 the conventional form ; there is still required the further minor 

 modification introduced in the complete diagram of Fig. 162, and 



