130 



ARMATURE CONSTRUCTION 



Hence, as right-hand conductor, of this turn, we should choose 

 1 + 47 = 48, or 1+49 = 50. 



Let us choose the latter, and designate the right-hand 

 conductor as number 50, as shown in Fig. 152. 



We shall make a practice of writing the number of each con- 

 ductor in some such relative position as that shown in Fig. 152. 



In Fig. 153 we have thus drawn and numbered conductors 

 1, 2, 49, and 50. Let us furthermore introduce into Figs. 152 and 

 153 the additional convention of representing all even -numbered 



FIG. 153. 



FIG. 151. 



FIG. 152. 







FIG. 154. FIG. 155. 



Conventional Elements of Winding Diagram. 



conductors by dotted lines. If this is a winding with two 

 conductors per slot, and if 1 and 2 are the top and bottom 

 conductors in one slot, then a moment's reflection will show that 

 49 and 50 are top and bottom conductors respectively of another 

 slot, as indicated in Fig. 154. 



We thus have the further rule which we must always keep 

 distinctly in mind that top conductors are denoted by odd, and 

 bottom conductors by even, numbers. Also, the top conductors 

 are represented by full lines and the bottom conductors by dotted 

 lines. 



It might be supposed that as 1 and 50 constitute the two 

 sides of one turn, 2 and 51 would constitute the two sides of 



