Welcome to my private telephone collector's
website, I'm mainly collecting phones with some additional switches,
small switchboards etc. But the're simple telephone sets too.
In this place you'll find some English general
information and a few typical telephone sets. By clicking the picture
you'll get more detailled pages.
Televerket AB 112
The first practically-realised voice connections
were made by directly wired BELL-telephones,
but already some yars ago the Germen REISS
demonstrated the use of "microphone", battery and telephone
- the finally most used principle today.
At the beginning the batteries were placed close to the singles
subscribers instruments - the so-called Local Battery System (LB).
A magneto was probably used for ringing the remote station .
Switchboards came in use to random connect several stations. A drop-down
indicator shows the calling line, for connections mostly cords were
used. The end-of-call ringing releases an other indicator.
Very small switchboards were of the cordless type. A plug in a matrix
of sockets connects lines as desired.
10 Lines (Televerket)
Intercom For Home Use
sets with direct line acess were introduced to reach the other subscribers
without any operator's help. Especially for private use the telephone
sets were of more simple construction, f.e. single wiring, battery
ringing and doing without induction coils.
It was very costly to maintain all the remote subscribers batteries.
At the beginning of the 20th century central located batteries were
introduced: CB-Systems were made.
To prevent waiting times for the switchboard operator automatic
exchange systems were invited and became more and more in use. By
turning a finger wheel ("dial") the subscriber himself
established the connections. Rining, charging and terminating were
Dial Table Set With Counter
(Wall Set, Estonia)
small office use so called "intertrough switches" came in
use. That are small switchboards for both one exchange and extension
where the connections are made manually. Mostly they are powered by
subscribers line from public exchange. The extension's set was probably
a simple subscribers instrument.
Private Branch Exchanges the number of users rapidely increased.
Internal calls were free of charge but mostly all phones could share
the limited lines to the public exchange. Small manual line-powered
switchboards in a great variety came in use.
1 Exch. + 2 Extn.
Intercommunication Set SA 25b
To get a direct and random acess to all exchange lines and extensions
intercommunication sets up to 6 exch. and 31 extn. were employed.
Some of those instruments became very large and hard to operate. The
wiring of the whole system was extremly complex and expensive.
invited to enjoy the complete collection by clicking Home and
Index or directly here.