340 



INDEX 



Dick, Kerr & Co. (continued} 

 Evolution of a Strip Coil, 268 

 Large finished Commutator, figs. 120 



Component parts, fig. 121 

 Rotor of Alternating Current Generator, 



fig. 2 



Ventilating Spacing Piece, fig. 76 

 Winding of Alternator, 212, 216 ; fig. 



214 

 Die Work, 35 et seq. 



Eddy-current Loss affected by, 21 

 Imperfections, 89 

 Index v. Compound Dies, 36-38 

 Types of Die 



11 Bliss" Double Die, 43 ; fig. 44 

 Compound, 35-38 ; fig. 44 

 Die for slot and periphery, 44 ; fig. 46 

 Finger, 43 



French, 43 ; figs. 43, 44 

 German, 43 ; figs. 44, 45 

 Index, 35-38 



Disc-Cutting Press, see Press 

 Disc and Ring Cutting Machine, fig. 38 



See also Shears, Circular and Rotary 

 Distribution of Windings, see Windings 

 Drifts for assembling Core, 85 

 Ducts, Core, 74, 80, 104 

 Dynamic Balance, 331 

 Dynamo Electric Machines, 1 



Classification of parts, 6 ; CJiart, 8 



EDDY Current Loss, see Losses 

 Eickmeyer Form-wound Coil, 255 ; fig. 



257 



Electro-magnetic Design, 136 

 Electromotive Force 

 in Armature Windings, 137 

 Single Coil Winding. 173 

 Y and A connected Armatures, 184 

 in Induction Motor Rotor, 6 

 Sine Waves, 182 

 See also Pressure 



Emery Wheel for grinding surface of In- 

 duction Motor Rotor, 105 ; 

 fig. 106 

 End Rings for 

 Commutators 



Clamping, 109, 122 ; figs. 108, 109, 



112-115 Material, 128 

 Insulating, 107 Arrangement, 120, 



121 Thickness, 117 

 Squirrel Cage Rotors 



Circular Rotor Bars, fastening End 



Rings, 99-102 



Construction and Securing, 97-105 

 Rectangular Rotor Bars, fastening 



End Rings, 103 ; figs. 104 

 Kesistance, 101, 102 

 Screwed End Rings, 103 ; fig. 105 

 End Windings, Banding of, 329 

 Epstein, Prof. J. 

 Ageing, note 10 



Hysteresis Tester, 26 ; figs. 28-30 Test 

 Instructions, 27 



Equaliser Rings for Continuous Current 

 Armatures, 269, 270 ; fig. 

 269 



Ewing Hysteresis Tester, 13 et seq. ; figs. 



13, 15 

 Permanent Magnets, note 21 



FIBRE for separating Clamping Blocks from 



Commutator Segments, 110 

 Field, 



Distinction between Stator, Rotor, Ar- 

 mature and Field, 2, 4, 6 ; 

 Chart, 8 



External Rotating, 7 

 Internal 



Rotating, 2, 6 

 Stationary, 7 

 Windings, 1 



Figure of Loss, Definition, note 10 

 Finger Die, 43 

 Fingers, Spacing, 75-80 

 Finishing and Testing Armatures, 328 



et seq. 



Form versus Hand Winding, 320 

 Formers, Winding, for straight and bent 



Coils, 320 ; figs. 321 



Foucault Current Losses, see Losses, Iron 

 Frame, 56 et seq. 



Box type, 67 ? fig. 72 



External Stationary Armature Frames, 



62 ; figs. 69-73 

 Split, 67 ; figs. 72, 73 

 French Chalk for assembling Core Plates, 



87 

 French Practice 



Customary composition and thickness of 



Laminations, 26 

 Thickness of Sheet Iron for Laminations, 



note 13 



French Type Die, 43 ; figs. 43, 44 

 Frucht on Stampings, 29, 34 

 Laminations, Process of Stamping, 40 ; 

 %*. 41, 42 



GAS Pipe Rings for Heating Commutator, 

 112, lUjfig. Ill 



Gauging Commutator during Assembling, 

 110 ; fig. Ill 



General Electric Co. Equaliser Ring Con- 

 struction (Old), fig. 271 



Generators, see Alternating Current, and 

 Continuous Current Genera- 

 tors 



German Rules for Iron" Ageing" defini- 

 tion, note 10 



German Type Die, 43 ; figs. 44, 45 



Gramme Ring 



Armature Hand Wound Coils, 254 

 Windings, 7 



Grinder for preparing Armature Core, 287 ; 

 fig. 288 



Grounds in Commutator, Testing for, 117 



Guillotine for cutting Sheet Insulation, 

 287 ; fig. 289 



