NATIONAL TELEPHONE COMPANY
B670


Telephones for existing Electric Bell Wires

COMPLETE SICK ROOM SET

Pattern No. B670

Pattern No. B670 consists of - for the patient - a Hand Combination Transmitter and Receiver, with Ringing and Speaking Keys in the Handle, and a “House” Set - to be placed in the apartment with which it is desired to communicate - comprising a Granular Carbon Transmitter, Watch Receiver, Cord, Automatic Switch, Buzzer, two No. 4 Dry Cells, and 12 yards of flexible Cord, with a 2-pin Connector, for the purpose of readily connecting the two instruments together.

This Set is complete in itself, and is intended for establishing immediate communication between two rooms, etc.

If it is so desired, the Hand Combination can be replaced by another “House” Set, thus enabling a call to be effected either way, by means of the buzzer, and a ringing key which is provided.

Was B102 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