FUNDAMENTALS OF TELETYPEWRITERS 



633 



on a typebar machine or typewriter. The entire machine costs 

 appreciably less than the more comprehensive No. 15 machine. The 

 No. 26 machine is illustrated in Fig. 7. 



Fig. 7 — No. 26 teletypewriter. 



Features of Tape Teletypewriters 



In the case of tape teletypewriters it is also necessary to have a clean 

 printed record and occasionally there is a need for carbon copies. 

 Accordingly, the tape machine standard for the Bell System is a type- 

 bar machine using an inking ribbon and known as the No. 14 teletype- 

 writer. It is illustrated in Fig. 8. 



