INCANDESCENT LAMPS. 



203 



carbon is put in its place without any adjustment. There is no 

 apparatus for regulating." 



Previous to constructing the form of lamp we have 

 described, Reynier had contrived a more complicated one, 



FIG. 54. 



in which the carbon cylinder was moved by a clockwork 

 mechanism, checked by the pressure of the carbon rod, the 

 end of which formed a brake, so that the clockwork acted 

 only as the carbon consumed. But he soon saw that the 

 problem admitted of a simpler solution. 



Quite recently Reynier has given his lamp the form shown 

 in Fig. 54, which yields the best results. In this new pattern 



