CARD TRANSLATOR FOR NATIONWIDE DIALING 



1095 



mounts may be swung aside as gates to gain access to the photo-trans- 

 sistor lenses for cleaning. The photo-transistor mounts are illustrated 

 by Fig. 38. 



COVERS 



Covers are provided for the four sides of the translator and its top. 

 These covers may be dismounted quickly when servicing is necessary. 

 The base casting is cut away beneath the covers so as to form air passage 

 ways to its interior. The covers are perforated near their top and in this 

 way a chimney effect is created which is beneficial to cooling. 



4 A AND B APPAILiTUS UNITS 



All of the static elements, that is, the light source, the collimating 

 lenses, the card cage, the pull-up magnet superstructure, the photo- 

 transistor mounts, the terminal block, and the multi-terminal jack sub- 

 assemblies, the framework, the covers and sundry details are combined 

 in a subassembly known as the 4 type apparatus unit. 



COMPREHENSIVE SCHEMATIC 



The over-all appearance of the working translator is disclosed in 

 Figs. 12, 13, 39 and 40. The principal component groupings entering 

 the assembly have been discussed at some length and have been illus- 



Fig. 40 — Translator (card access side). 



