Part 6

Westinghouse Socket 59

Adapters for Edison Screw Sockets, 1892 60

Various Series Bases in Use, 1892 61

Edison “Municipal” System, 1885 62

Edison “Municipal” Lamp, 1885 63

Shunt Box System, 1887 64

Enclosed Arc Lamp, 1893 65

Open Flame Arc Lamp, 1898 66

Enclosed Flame Arc Lamp, 1908 66

Constant Current Transformer, 1900 68

Series Incandescent Lamp Socket with Film Cutout, 1900 70

Nernst Lamp, 1900 71

Diagram of Nernst Lamp 72

Cooper-Hewitt Mercury Vapor Arc Lamp, 1901 73

Diagram of Cooper-Hewitt Lamp for Use on Alternating Current 74

Luminous or Magnetite Arc Lamp, 1902 75

Diagram of Series Magnetite Arc Lamp 76

Mercury Arc Rectifier Tube for Series Magnetite Arc Circuits, 1902 77

Early Mercury Arc Rectifier Installation 78

The Moore Tube Light, 1904 79

Diagram of Feeder Valve of Moore Tube 80

Osmium Lamp, 1905 82

Gem Lamp, 1905 83

Tantalum Lamp, 1906 84

Tungsten Lamp, 1907 86

Drawn Tungsten Wire Lamp, 1911 87

Quartz Mercury Vapor Lamp, 1912 88

Gas Filled Tungsten Lamp, 1913 89