INDEX 



343 



PAPER, Insulating 



for Laminations, disadvantages, 35 

 Manilla, 246-248 

 Mica, 248 

 Red Rope, 246, 247 



Parshall and Hobart on Armature Wind- 

 ings, note 137 

 Patents 



Alioth Form-wound Coils [German 

 Patent, D.R.P. 34783 of 

 1885], 255 



Eickmeyer Form-wound Coils [English 

 Patent, 2246 of 1888], 225 ; 



Hobart's 



fig. 257 

 Form-i 



-wound Coil [British 

 Patent, 17,489 of 1901] 255 ; 

 fig. 257 



Sayers, W.B., Winding for Form- 

 wound Coils [12,801 of 1904], 

 312 ; fig. 314 



Siemens' Form-wound Coil [No. 2196 

 of 1903], 312 ;figs. 314 



Webber Winding Form [U.S., No. 

 561,636 of 1896], 258, and 



figs. 



Peripheral Speed of High Speed Com- 

 mutators, 126 



Periphery Die for cutting Slot and 

 Periphery, 44 ; fig. 46 



Permeability 

 Sheet Steel, 10 



Tests, various methods, 13 et seq. see 

 also Testers 



Pertinax for Slot Linings, 248 



Pin Winding, 301 



Pitch, Definition of, 132, 135 



Plane Former for Coils, 261 ; fig. 260 



Polyphase Motors, Testing for faults in 

 Windings, 335 



Power Shears for cutting Sheet Steel, fig. 

 36 



Automatic Punching Machine, 38 ; figs. 



47, 48 



Double Crank, 50 

 Geared Disc-cutting, figs. 53, 54 

 Index, 46 ; figs. 47-49 

 Notching Machine, 51 ; fig. 52 

 Size of, 36 

 Squeezing Commutators, 200-ton Press 



foil fig. 116 



Stamping, 30 Some makers of, 55 

 Pressing Armature Coils, 259 ; fig. 260 

 Presspahn for Slot Linings, 246, 247 



Shellac'd, Advantages, note 249 

 Presspahn-mica for Slot Linings, 248 

 Construction and Properties of, 252, 



253 

 Pressure required 



Assembling Core, 90, 91 

 Conductors, pressure between, 195^ 235 

 Hydraulic, for Assembling Commutator, 

 ' 111, 115, 117, 118 ; figs. 

 112, 116 



Pressure required (continued) 



Stamping Core Plates, 36, 53 



Terminals of Y and A connected Wind- 

 ings, Pressure between, 184 



Testing Armatures, 333 



See also Electromotive Force 

 Punches 



French Type Description &ndfigs., 43, 

 44 



Imperfections, 89 

 Punching Machines, see Press 

 Punchings 



Assembling, Care required, 89 



See also Stampings 



RANGES, No. for Alternating Current 

 Windings, 187, 191 ; Table 

 189 



Spiral Coil, 199 ; Table 202 

 Red Fibre, Securing Conductors in Slots, 



98 

 Red Rope Paper for Slot Linings, 246, 



247 



Re-entrancy of Continuous Current Wind- 

 ings, Table 157 

 Resistance 



End Rings, 101, 102 

 Sheet Steel, Specific Resistance, 25, 26 

 Richter Testing Apparatus, 16, 29 ; fig. 

 31 Total Iron Loss given 

 by, 26 



Ring Cutting Machine, fig. 38 ; see also 

 Shears, Circular and Rotary 

 Rings 

 Building for Commutators, 109 ; figs. 



108, 109, 112-115 



Clamping for Commutators, Construc- 

 tion, 122 Material, 128 

 Collector for Alternating Current Wind- 

 ings, 166, 179, 182, 240-245 

 End for Squirrel Cage Rotors, Con- 

 struction and Securing, 97- 

 105 



Equaliser for Continuous Current Wind- 

 ings, 269, 270 

 Gas pipe for heating Commutators, 112, 



114 ; fig. Ill 



Mica End Rings for Commutators, 107 

 Thickness, 117 



V Rings, Arrangement, 120, 121 

 Rotary Converter Windings, see Windings, 



Alternating Current 

 Rotary Shears, fig. 39 

 Rotor 



Bars, see Conductors 

 Continuous Current Machines, 1 

 Distinction between Stator, Rotor, 

 Armature and Field, 2, 6 ; 

 Chart, 8 



Induction Motor, see Induction Motors 

 Slip Ring, 6-, fig. 7 

 Squirrel Cage, see that title 

 See also Induction Motor Rotors 



Rules for Testing Sheet Iron, 27 



TY OF tlF.C~ 



ACULTY or * ' - fc 



LABORATORY, 



