CARD TRANSLATOR FOR NATIONWIDE DIALING 



1089 



for an indefinite period. This was accomplished by providing hooked 

 end bails pivotally mounted on the pull-up magnet structure and so 

 arranged that they may readily be swung into a position where their 

 hooked ends enter the top notches in the end edges of the cards. A 

 manually operated crank is provided whereby the bails and hence the 

 cards may be elevated. The mechanism employed is shown in Figs. 27, 

 28 and 34. It will be noted that the bails are arranged to act much like 

 ice tongs, that is, the heavier the load the more securely they grip. 



CLEARING A ''CARD CRASH" 



It is possible, under certain conditions, involving double trouble, for 

 the pull-up magnet circuit to be broken while the latches are operated 

 clear of their code select bar supporting position. If this happens, the 

 card stack will fall and unless the translator is very lightly loaded, the 

 weight of the card stack will overcome the solenoid retractile springs and 

 all of the cards will move down to the pull-down magnet pole face level. 

 Such a condition has been dubbed a ''card crash". If it occurs, the pull-up 



DYNAMiC- 

 UNIT 



APPARATUS 



i 



ELEVATOR 

 TABLE 



CARD TRANSLATOR 

 TABLE 



Fig. 35 — Portable elevator table. 



