\ PROPERTY OF ELECTRICAL LABORATORY, ] 



i FACULTY OF APPLIED SCItNCE. 



Date.. 



CONTENTS 



PAGE 

 PREFACE . V 



LIST OF TABLES 



CHAPTER I 



INTRODUCTORY ...... . . . * . . . . 1 



CHAPTER II 



ARMATURE LAMINATIONS AND THEIR PREPARATION . . . " . 10 



CHAPTER III 



THE ARMATURE FRAME ....... .56 



CHAPTER IV 



ARMATURE CORE VENTILATING PIECES ....'. .74 



CHAPTER V 



ASSEMBLING THE ARMATURE CORE ........ 81 



CHAPTER VI 



CONSTRUCTION OF SQUIRREL CAGE ARMATURES ..... 95 



CHAPTER VII 



COMMUTATOR CONSTRUCTION ........ 107 



CHAPTER VIII 



CONTINUOUS-CURRENT ARMATURE WINDING SYSTEMe . . . 129 



vii 



