ERICSSON TELEPHONE
No's N2515, N2516, N2517, N2518 & N2520


Magneto Telephones
N2515 shown

n2515.jpg (10263 bytes)The casework of this instrument is of polished hardwood and incorporates a handy writing desk and a battery compartment measuring 7.25 x 6.5 x 3.25 inches which will accommodate 2 dry or inert cells.

The equipment comprises a compact "alnico" magnet generator, ringer, anti-side-tone induction coil, Bakelite micro-telephone and enclosed terminals.

The wiring is arranged so that a condenser may be readily added in the ringer or receiver circuit as desired.

Micro-telephone Cord N4021
Receiver N6819
Inset N7752
Earpiece N4443
Mouthpiece N8634
Diaphragm N4400
Generator Handle N56393

Code No.  

Generator  

Ringer ohms  

Dimensions ins  

Weight lb

Introduced

N2515  

Standard  

1000  

15 x 8.75 x 8.75  

9.5

1947

N2516  

Heavy Duty  

2000  

15 x 8.75 x 8.75  

9.75

N2517 1 magnet 1000 15 x 8.75 x 8.75 11.25 1946
N2518 Mining use 2000 15 x 8.75 x 8.75 11 1950
N2520 1 magnet 2000 15 x 8.75 x 8.75 1953

See also section on N2516


MINING TYPE
CERTIFIED SAFE FOR MINE SURFACE USE UNDER COVER
CERTIFICATE T/Tel. 66

This instrument has the same appearance as that illustrated above, but is designed and equipped for mine work, and has been approved by the Mines Department as intrinsically safe, and may, therefore, be connected with the underground circuits.

In common with other certified apparatus its connection and use is governed by the Telephone and Signalling Order S.R. & 0. 1938-1407.

It is intended solely for use on the surface and under cover, as in offices, etc., where an ironclad telephone is out of place. It is not suitable for use below ground or in exposed positions.

Mines Department Type - Model N2518

Taken from the Ericsson catalogue, edition No. 49

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Last revised: April 16, 2000