NATIONAL TELEPHONE COMPANY
B640


MAGNETO INTERCOMMUNICATION

TABLE SET

Pattern No. B640

Comprises - Hand Combination Transmitter and Receiver, Cord, Automatic Cradle - switch, Induction Coil, Lightning Arrester, Magneto Generator, Bell, Line Selector and Wall Rosette and Cord.

The same general remarks apply as in the case of Patterns Nos. B625 and B630 and further, the Line Selectors of both patterns (Nos. B635 and B640) are fitted with a mechanical click which reduces the risk of making contact with two stations at once.

5, 10, 15, 20, 25 & 30 line models.

Was B92 in the 1903 Catalogue.
 

 
BACK Home page NTC
Home Page
Search the Site Glossary of Telecom Terminology NTC
Telephone
Quick Find
All Telephone Systems

Last revised: July 07, 2020

FM2