84 



A RMA TURK CONSTR UCTION 



sioned to abut precisely against one another ; on the contrary, a 

 distance of some 0*5 mm. is allowed between the radial sides of 

 neighbouring sectors, as indicated in Figs. 87 and 88. 



FIG. 87. FIG. 88. 



Diagrams showing clearance between adjacent Sectors. 



It is distinctly preferable to have the division between two 

 sectors along the middle of a tooth (Fig. 87) instead of at the 



FIG. 89. 



FIG. 90. 



Armature Laminations. 



middle of a slot (Fig. 88). The two arrangements are indicated in 

 Figs. 87 and 88, and it will be understood from these figures that 

 the disadvantage of the arrangement shown in Fii:. < v 3 is that 

 there is a liability to rough places at the middle of the bottom of 



