PULP INSULATION FOR TELEPHONE CABLES 



11 



Defective Wire 



It is necessary to mark defects in the completed wire by placing a 

 white tag in the winding in order that repairs may be made by the 

 twister operators, as there is no opportunity to make them at the pulp 

 machine take-ups. Short breaks in the insulation were often passed 



Fig. 6 — Stringing in a wire at polishers. 



unnoticed by the operators so a bare wire detector was put in which 

 sounds an alarm, indicates the spool position by a light and records 

 the break by number on a position counter and on a master counter. 

 If any one spool shows excessive defects it is rejected. 



