N-1 CARRIER TELEPHONE SYSTEM 



435 



Die Cast Chassis 



In order that components of varying types and sizes may be mounted 

 with their terminals in good position for wiring, the chassis construction 

 must provide for a variety of mounting surfaces in various planes. Such 

 chassis cannot be fabricated economically even in large quantities, because 



Fig. 12— Operator using electrically operated wire wrapping pistol. All wires are precut 

 to suitable length. 



of the multitude of operations required. They can, however, be designed for 

 economical die casting. One of the eleven such castings used in the system 

 is illustrated in Fig. 13. In addition to reduced costs, the die castings offer 

 a number of other advantages. Die castings are uniform in dimensions, 

 facihtating assembly as well as aiding the interchangeabiUty of the plug-in 



