INDKX 



345 



Spread of Winding, 210 Definition, 174, 



176 

 Spreading Armature Coils, Apparatus for, 



259-26.4 



Squaring up Segments, 110 

 Squirrel Cage 



Motors, 95 ; Chart, 8 



Air Gap Depth for Induction Motors, 



45, 104 ; Tables, 46, 105 

 Rotors, 6 



Construction, 95 et seq. 

 Conductors 



Circular, Methods of fastening end 



rings. 99-102 

 Rectangular, Methods of fastening 



end rings, 103 ; Jigs. 104 

 Spider for supporting Laminations, 95 

 Spider and Screwed End Rings, 103 ; 



fig. 105 



See also Induction Motor Rotors 

 Windings, see Windings 



Core Plates, Process, 35 et seq. [also 



Machines, Some Makers of, 55 

 Presses, see Presses 



Stampings, Standard Sizes and Tvpes for 

 Sheet Steel, 29 ; figs'. 32, 33 

 Standardisation Rules for the Testing of 



Sheet Iron, 27 

 Standardising Commission for Iron Testing, 



Recommendations, 27 

 Star Grouping [Y], 179-184 ; figs. 18Q, 



181, 202 



Static Balance, 331 

 Stator 



Alternating Current Machines, 1 

 Distinction between Stator, Rotor, Ar- 

 mature and Field, 2, 4, 6 ; 

 Chart, 8 

 Steel for Laminations, 10 



Composition of low "ageing'' Sheet 



Steel, 11 



Specific Resistance of, 25, 26 

 Standard sizes and types, 29 ; figs. 32, 



33 



See also Iron 



Steiumitz Coefficient (77) 23 Table of 



relation to hysteresis loss, 24 



Stembridge, E. K., Developed Winding 



Diagrams, 138 ; fig. 139 

 Stoll Index Press, fig. 48 

 Strip Bending Machines, 274 

 Strip Winding Insulation, 250 

 Strip Wound 



Armature Coils, see Coils, Form -wound 

 Lap Windings. 288 

 Wave Windings, 297 



TAPE, Insulating 



Jaconet for binding groups of con- 



ductors, 248 

 Method of preparing and impregnating, 



251 



Taping Machines for Strip Wound Coils, 



fig. 277 



Tapping Closed Circuit Windings for 

 Alternating Current, 164, 

 240-245 



Tappings to Armature Windings, 269 

 Temperature 



Ageing, Effect of high temperatures, 



10 

 Annealing Armature Laminations, 10, 



35 



of Commutator during Assembling, 1 12 

 Tension of Binding Bands, 329, 330 

 Terminals of 



Alternating Current Windings, 164 



Polyphase, 179-184 

 Bar Wound Alternator, 325 ; fig. 327 

 Testers for Iron 



Blondel Carpentier Hysteresimetre, 21 



et seq. ; fig. 23 

 Brion, note 16 

 Epstein, 26 Test Instructions, 27 ; figs. 



28-30 

 Ewing's 



Description and Method of testing by, 



13 et seq. ; figs. 13, 15 

 Permanent Magnets, note 21 

 H olden Testers, note 21 

 Mol linger Tester, 27 



Richter Apparatus, 16, 29 ; fig. 31 

 Total Iron Loss given by, 26 

 Testing 



Armatures during Winding, 333-335 

 Commutators for Short Circuits, 110, 114 

 Insulation, 333 



Sheet Iron for hysteresis and perme- 

 ability, 13 et seq. 

 Standardisation Rules for, 27 

 Testing Lamp for detecting Short Circuits, 



110 

 Thickness of 



Commutator Segments, 125 

 Laminations for Armature Cores, 11, 



12 



French practice, 26 

 Induction Motor Rotors and Stators, 



46 



Insulation, 12 

 Mica End Rings, 117 

 Mica Plates, 109 

 Slot Lining, 246 



Thompson, Dr S. P., on Armature Wind- 

 ings, 137 



" Hemitropic " Winding, 170 ; fig. 169 

 Torque, Starting 



Means of obtaining higher, 101 

 Squirrel Cage Motors, 99 

 Traction Dynamo, Commutator Construc- 

 tion for, fig. 119 



Tramway Motor, Insulation Specification 

 for 500-volt Armature Slots, 

 249 



Transformer Cores. Plates annealed after 

 punching, note 35 



23 



