304 



ARMATURE CONSTRUCTION 



A length of wire is cut off the reel sufficient to wind <>no coil ; 

 the length may be arrived at from the number of turns and the 

 mean length of turn. The pins are then displaced in the order 

 indicated in Fig. 364, commencing with No. 1. The whole length 

 of wire runs through the slot each time a pin is displaced. 



When slots Nos. 10 and 3 have been filled, the job appears as 

 in Fig. 365. The pins are now put into slots 11 and 2, and when 

 these are finished the state of affairs is as in Fig. 366. 



Fio. 364. Arrangement of Pins in Slots, showing Order of Winding. 



FIG. 365. Slots 3 and 10 Wound. 



Slots 12 and 1 are next taken in, and when these are finished 

 and the blocks cleared away the coil appears as in Fig. 367, and the 

 ends are marked S and T in accordance with the convention of 

 Chap. IX. One may see how the actual shape and form of the 

 winding of this coil corresponds to the diagram of the type in 

 Fig. 207. 



The stator will now be moved through an angle of 60 so that 

 the block may be set up in a vertical position ready for winding 

 the next adjacent coil in the back range. The stator is repeatedly 



