344 



INDKX 



SAYERS, W. B., Winding for Form-wound 



Coils, 312 ; fig. 314 

 Scales for Ewing Hysteresis Tester, 14 ; 



fig. 15 

 Scott & Mountain 



Assembled Armature Core, fig. 92 

 Casting for frame of Stationary Arma- 

 ture, 62 ; fig. 69 

 Stator of Alternating Current Motor, 



fid- 4 



Wound Stator for Induction Motor 



Winding Diagram, 207 



Winding of, 302-308 ; figs. 



301-307 



Sectors, Clearance between Armature 



Laminations, 82 ; figs. 84 

 Segments, Commutator 



Construction of, 107, 109 ; figs. 108 

 Copper and Mica, Arrangement of. 



110 

 High Speed Commutators, Type for, 



128 



Mica for, 107 



Multiple Circuit Windings, 133 

 Thicknesses, 125 

 Shaft, 1, 4 ; fig. 3 



Commutator, Mounting direct on Shaft, 



126 

 Laminations, Assembling direct on 



Shaft, 95 ; fig. 96 

 Assembly of 27 h.p. Railway Motor, 



61. 1 figs. 65,66 

 Shears 



Circular, 48 ; figs. 36, 38, 39, 40, 50 

 with Angular Cutters, fig. 40 

 with Segment Attachment, 48 ; fig. 



50 



Circular Cutter Shearing Machine, 30 

 Power Shears, fig. 36 

 Rotary, fig. 39 

 Sheet Insulation, Shear for cutting, 287 ; 



fig. 289 



Sheet Steel, see Steel 

 Shellac for Mica Segments, 107, 109 

 Shellac'd Presspahn, Advantages, note 



249 



Short Circuits, Tests for in 

 Commutator, 110, 114, 117 

 Winding, 334 



Shuttle for Winding Gramme-ring Ar- 

 matures, 254 

 Siemens Bros. Form -wound Coil, 312 ; 



figs. 314 



Siemens Drum Type of Armature, Hand- 

 wound Coils, 254 



Siemens - Schuckert - Werke of Vienna 

 Richter apparatus for testing 

 Sheet Steel, 16, 26, 29 ; fig. 

 31 

 Siemens & Halske 



Commutator for 110-k.w., 500-volt 



Dynamo, ./fy. 122 

 Continuous Current Generator, 7 

 Sine Waves, E.M.F., 182 



Sleeve for 



Armature Core Plates, 61 



High Speed Commutator, 126 



117 h.p. Gearless Railway Motor, fn/. 



64 



Slip Ring Rotor, 6 ; fig. 7 

 Slot Insulation, 320 \figjt. 322 



Specification for 500-volt Tramway 



Motor Armature Slots, 249 

 Slot Linings Material, Selection of, 246 

 Slot Wound Armatures, Core Ducts in, 74 

 Slots 



Conductors, Securing in, 98 



Die for cutting Slot and Periphery, 44 ; 



fig. 46 

 Drifts for maintaining true alignment, 



85 

 Eddy Current Loss caused by over-filing, 



21 



Number 



Per Pole per Phase for Alternating 

 Current Windings, 202 ; 

 Tabl.es 203, 210 

 Permissible for two and three phase 



Windings, 210 

 Punching, 35 

 Space Factor in, 246 

 Squirrel Cage Motors, Types, 105 ; fig. 



106 



Wood for Wedges, Disadvantages, Selec- 

 tion and Treatment, 247 

 Smith & Co., Messrs Daniel Armature 

 Disc and Ring Cutting 

 Machine, 39 ; fig. 38 

 Space Factor in Slots, 246 



Thickness of Slot Insulation, 322 

 Specific Resistance of Sheet Steel, 25, 26 

 Specification for 



Insulation for 500-volt Tramway Motor 



Armature Slots, 249 

 Sheet Steel for Laminations, 1 1 

 Testing Sheet Iron, 17, 27 

 Speed, Peripheral, of High Speed Commu- 

 tators, 126 

 Spider 



Armature, 1-4, 56 ; figs. 3, 57-63 

 200-k.w., 6-pole, 135-r.p.m. C.C. 



Generator, 56 ; fig. 59 

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



Generator, 56 ; fig. 60 

 300 -k.w., 10-pole, 100-r.p.m. C.C. 



Generator, 56 ; figs. 57, 58 

 1000-k.w., 16-pole, 19-r.p.m. C.C. 



Generator, 61 ; fig. 63 

 Commutator, 2, 128 ; fig. 3 

 Methods of Keying Laminations, 62 ; 



Jfc. 88 

 Squirrel Cage Armatures, 95, 96, 103 ; 



figs. 97, 105 

 Spiral Coil, see Coil 

 Spiral Coil Windings, 199-201 Properties, 



191 



Split Frame for Armature, 67 ; figs. 72, 

 73 



