160 



ARMATURE CONSTRUCTION 



last conductor is reached through a "special lead" as indicated 

 in the diagram. There is an irregularity in the pitch. Starting 

 from conductor No. 1, yb is 9 ; thus 1 is connected with the back 



4-CIRCUIT SIMPLEX WINDING, 



Derived from a 2-circuit, double winding of the formula c = ny+2m (48 = 4x11+2x2) 

 by omitting every other segment. 



FIG. 194. 



end to 10. yf is 11 in all cases. Thus 10 is connected over the 

 front end to 21. But after traversing 21, it is connected over the 

 back end to 32 ; i.e. yb is then 11. Thus, while yf is always 11, 

 yb is alternately 9 and 11. This irregularity is undesirable for 



