18 



ZOOPBAXOQRAPHY 



while uncovered the lens to their full capacity. 



Figure 4 illustrates a portable battery of twelve 

 electro-photographic exposors; it consists of a rectan- 

 gular box divided into compartments, open at the front 

 and rear. 



In twelve of these compartments are arranged 

 rollers, curtains, magnets, etc. , as previously described, 

 and a compartment through which a focusing lens is 

 used. The two end compartments provide for the 

 adjustment of the camera, which is supported in the 

 box to the rear of the exposing arrangements. A 



Fig. 4. 



cable of insulated wires for connecting the twelve mag- 

 nets with the exposing motor, contains a wire for the 

 return current. As seen in the engraving, seven of 

 the magnets by the passage of their respective cur- 

 rents have completed their releasing operations. In 

 the eighth compartment the two apertures in the 

 exposing band are in the act of effecting an exposure. 

 The remaining four magnets are awaiting their turn 

 for action. 



Figure 5 is a photographic camera divided into 



