INDEX 



339 



Collector Rings for Alternating Current 

 Windings, 166, 179, 182, 

 240-245 



Commutator Construction, 107 ct seq. 

 Assembling 



75-h.p., Ill] fig. 112 

 750-k.w., Ill ; fig. 112 

 Building Rings, 109 ; figs. 108, 109, 



112-115 



Clamping Rings, 122 

 End Rings 



Clamping, Material, 128 

 Insulating, 107 

 Arrangement of, 120, 121 

 Thickness of Mica, 117 

 High Speed Construction, 126 

 Lugs, Connecting to Armature Con- 

 ductors, 122, 124, 291 ; figs. 

 124, 125, 295 

 Mounting Commutator direct on Shaft, 



126 

 Segments in Multiple-circuit Windings, 



133 



Sleeve, 126 

 Spider, 2, 128 ; fig. 3 

 Voltage, lower for Multiple-circuit than 



Two-circuit Windings, 141 

 110-k.w., 500-volt Dynamo, fig. 122 

 Compound Dies, 35-38 ; fig. 44 

 Concentration of Windings, see Windings 

 Conductors 



Commutator Lugs, Methods of connect- 

 ing to, 122, 124 ; figs. 124, 

 125 



Fixing in Slots, 98 

 Insulating and arrangement of groups 



of, 246, 267 



Materials employed in binding to- 

 gether, 248 



Jointing Bars and Connectors in Bar 

 Windings, 325 ; figs. 325, 

 326 

 for Multiple and Two-Circuit Windings, 



Comparison, 143, 144 

 Squirrel Cage Rotors 



Circular Conductors, fastening to End 



Rings, 99-102 

 Rectangular Conductors, fastening to 



End Rings, 103 : figs. 104 

 Types, 98 



Wood for Slot Wedges Disadvantages, 

 Selection and Treatment, 247 

 See also Coils and Winding of Armatures 

 Connections of Coils in Polyphase Wind- 

 ings, 211 ;figs. 207, 213 

 Continuous Current Armature Winding 



Systems, 129 et seq. 



See also Windings, Continuous Current 

 Continuous Current Generators and Motors 

 Current Distribution Rule for obtaining 



direction of Current, 137 

 Generator with Internal Stationary 



Field, 7 

 Rotor as Armature, 1 



Continuous Current Generators and Motors 



(continued) 

 Winding of 



6-pole, 250-k.w., 320-r.p.m., 550- 



volt, 270-278 

 4-pole, 10-h.p., for 500 volts and 950 



r.p.m., 278-286 



Cooling of Squirrel Cage Rotor End Wind- 

 ings, 100 ; figs. 100, 101 

 Copal Varnish for Mica Plates, 109 

 Copper 



Rotor, Amount on, 98 

 Segments, 109 ; figs. 108 

 Core, 1, 4 



Accurate Machining of external surface, 



104 



Emery Wheel for, 105 ; fig. 106 

 Assembling, 81 et seq. 



Drifts for maintaining true alignment, 



85 



Pressure required, 90, 91 

 Rotating Armatures, 81-91 ; figs. 81- 



83 



Assembled, /#& 87-90 

 Stationary Armatures, 91 ; figs. 85-87 



Assembled,^. 91-94 

 Banding of, 329 

 Ducts, 74 



Insulation Paper, disadvantages, 35 

 Loss, see Losses 



Plate Insulation, Space occupied by, 12 

 Plates and-Sheets, see Laminations 

 Preparation for receiving Coils, 287 

 Ventilating Pieces, 74 et seq. ; figs. 74-79 

 Ventilation, 61 ; fig. 67 

 Cotton Tape for binding groups of Con- 

 ductors, 248 



Cramp, W., on Armature Windings, 137 

 Current 



Direction in Motors and Dynamos, 137 

 Distribution in Two-circuit and Multiple- 

 circuit Windings, 142 



DANIELSON, Ernst Winding Squirrel 

 Cage Rotor, 100 ; figs. 100, 

 101 

 Delta (A) Grouping, 179-184 ; figs. 180, 



181, 202 



Derivation of Alternating and Continuous 



Current Windings, Plate xiv. 



Developed Armature Winding Diagrams, 



138 ; figs. 139, 144 



Alternating Current Polyphase Wind- 

 ings, 212 ; figs. 215, 219, 

 221, 223, 224 



Diagrams, Winding, see Windings 

 Diamond-shaped Form-wound Coils, 261 

 Dick, Kerr & Co. 



Armature Spider, 56 ; fig. 62 

 Assembled Armature Core, figs. 89, 90, 



94 



Assembling Armature Core, 82 ; fig. 83 

 Castings for Frame of Stationary Arma- 

 ture, 63 ; figs. 70, 71 



