Schedule of Classification 



PAGE 



Insulators 709 



Location of Faults in Con- 

 ductors ... 709-710 

 Cables ... ... 709-710 



5900 Physiological Electricity. 

 (See also Physiology 4500- 

 4580.) 710-711 



Electrical Instruments and Apparatus. 



6000 General ... 711-720 



Alarms 711-712 



Applications of Electricity 712-713 

 Blasting by Electricity... 712 

 Railways ... ... 713 



Electric Traction ... 714-715 



Railways ... 714-715 



Tramways ... ... 715 



Electric Transmission of 



Energy ... 715-718 



Distribution of Energy 717 



Long Distance Trans- 

 mission ... 717-718 

 6005 Electrometers and Electro- 

 scopes. (See also 5740.) 720-724 

 Electrometers . . . 720-723 

 Absolute Electro meters ... 721 

 Capillary Electrometers 721-722 

 Quadrant Electrometers 722-723 

 Electroscopes ... 723-724 

 6010 Galvanometers, Resistance 

 Comparators, Voltmeters, 

 Wattmeters, etc. Re- 

 gistering Instruments. 

 (See also 5700.) 724-738 

 Ammeters ... ... ... 725 



Ammeters and Voltmeters 725 



Balance, Electric ... 725-726 



Electric Meters ... 726-727 



Electrodynamometers . . . 727 



Galvanometers ... 728-734 



Ballistic Galvanometers 729 



Mirror Galvanometers ... 731 



Tangent Galvanometers 733 



Registering Insti-uraents... 735 



Rheostats 735-736 



Voltameters ... 736-737 



Voltmeters 737 



Wattmeters ... 737-738 



6015 Variable Currents, Apparatus 

 for Determining the Cha- 

 racter of. (See also 5705.) 738-739 

 6020 Apparatus for Starting . and 



Regulating Currents 739-741 

 Commutators ... ... 739 



Regulators... ... ... 740 



Relays. (See also 6480.)... 740 

 6025 Frictional Electrostatic 



Machines ... 741-742 



Plate Machines 742 



6027 Induction Electrostatic 



Machines 742-745 



6030 



6040 



6043 



6045 



6047 



6050 

 6060 



6070 



PAGE 



Electrophorus 743 



Holtz Machine 744 



Wimshurst Machine ... 745 

 Electromagnets. (See also 



5410.) 745-750 



Attractive Power ... ... 746 



Forms of Electromagnets 747-748 

 Magnetism ... ... ... 749 



Solenoids 749-750 



Induction Coils. Trans- 

 formers. Interrupters 750-756 

 Induction Coils ... 750-752 



Ruhmkorf Coils. . . 751-752 



Transformers ... 752-755 



Alternate Current Trans- 

 formers ... ... 752 



Distribution by Trans- 

 formers ... ... 753 



Losses ... ... ... 754 



Interrupters ... 755-756 



Mercury Interrupters ... 756 

 Wehnelt Interrupter ... 756 

 Wireless Telegraph Appa- 

 ratus. Coherers, (See 

 also 6615.) ... 757-758 



Coherers 757-758 



Alternators. (See also 6460.) 758-759 

 Coupling ... ... ... 758 



Parallel Coupling ... 758 

 Forms of Alternators ... 759 

 Converters and Rectifiers 759-760 

 Converters ... 759-760 



Transformation of Alter- 

 nating Currents into Con- 



tinuous Currents 



760 



6080 



Magneto-Electric Machines 760-762 



Dynamos 762-771 



A rmatures 763-764 



Reaction 763-764 



Efficiency 765-766 



Forms of Dynamos 766-768 



Gramme Machine . . . 767 



Power 769-770 



Theory 770-771 



Motors 771-776 



Alternating Current Motors 771-773 

 Asynchronous Motors 771-772 

 Polyphase Motors ... 772 

 Revolving Field Motors 772-773 

 Synchronous Motors ... 773 

 Continuous Current Motors 773-774 



Efficiency 774 



Electricity as a Motive 



Power 774 



Electromagnetic Motors 774-775 

 Electromagnetism as a 



Motive Power 775 



Electric Lamps. (See also 



3090, 4202 and 6830.) 776-782 

 Arc Lamps ... 776-778 



. Arc Lamps, Carbons for ... 778 



