874 



THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1954 



THE MOLDING DIE 



Experiijuntal Work 



No attempt will be made to discuss the many ideas on mold desiji;n 

 which were conceived, evaluated and either discarded or improved in 

 arriving at the designs now employed. The in^'estigation was undertaken 



ns m m -^-^^:m-^ 



Fig. 10 Cycle, tiining aiul elect runic heater controls for niuldnig machine. 



