CARD TRANSLATOR FOR NATIONWIDE DIALING 



1069 



Fig. 21 — Card coding tool. 



only selectively as in the case of the tabs associated with the code select 

 bars were made 3<i" instead of J^'' wide and their outer corners were 

 rounded generously. The additional ruggedness thus provided is par- 

 ticularly beneficial because the end tabs are subject to more abuse than 

 the others in handling. 



Left and right-hand grouping of the holes and tabs was necessary for 

 the dual lense system and to provide space in the central area for guide 

 notches and for mounting the pull-up and pull-down magnets, as shown 

 in Fig. 20. 



Center, top and bottom notches are provided for engagement with 

 card guide bars that position the cards for proper alignment of the 

 holes and tabs. In addition, these notches guide the cards during their 

 operative displacement. 



Other marginal notches are provided for mass lifting of the cards, 

 end-for-end positioning in the card cage, locating the cards properly in a 

 tool for coding cards, and for another tool which facilitates handling the 

 cards in bulk. The coding and bulk card handling tools are illustrated 

 respectively by Figs. 21 and 22. 



The over-all size to accommodate the various elements and to pro- 

 vide adequate strength is 10-%'' wide X 5" high. 



