Figure 91. — Central station of Ja- 

 blochkofF electric light system ( 1 880) 

 for illuminating an exposition of 

 paintings in Paris. From La Lu- 

 miere electrique, June 15, 1880, vol. 

 2, p. 228. 



were 8 or 1 6 electromagnets in each of the stationary 

 rings and in the disk armature. The alternator was 

 constructed in three sizes — 4-, 8-, and 16-light 

 machines that, with their exciters, required, respec- 

 tively, 4, 7, and 13 hp. The smallest machine was 

 cited as providing a light of 300 candles from each 

 of the four "candles." The Siemens firm also manu- 

 factured a self-excited alternator (fig. 90). 



For a while it seemed as if the JablochkofT system 

 might be the solution to the problem of the electric 

 light. During the next few years its application 

 expanded quite rapidly; in addition to its use in 

 cities (figs. 91, 92) it was utilized to light the cabins 

 of ships. But the sudden rise of this new device came 

 to an almost equally as sudden halt as more economic 

 means of subdividing the electric light were developed. 



406 



BULLETIN 228: CONTRIBUTIONS FROM THE MUSEUM OF HISTORY AND TECHNOLOGY 



