TELEPHONE No. 47

Telephone No. 47	Telephone No. 47 Mark 4

Originally called the "Telephone, Fire, PO" it was later renamed as the Telephone No. 47.

It was a CB Fire telephone used for direct connection between buildings and the local Fire Station.

The original Telephone No. 47 was used in private buildings connected directly to London Fire Brigade Stations.  These had a lock on the door which could be opened with a Key, Lock, Telephone No. 47.

The Handset on the later Mark 4 (shown to the right) was a Telephone No. 184.

The Mark 4 was introduced in 1937 and had a Teak casing which was painted red (BS 381, Tint No. 538).

The internal metalwork was painted white.

This telephone was not available in the 1956 Rate Book.

Circuit Diagrams - FA 26 and N147.

Drawings - 63001 and 63002 (Mark 4).

Specification - S12.

Telephone includes (1928 & 1933):-
1 x Condenser, M.C. No. 1.
1 x Lock, Telephone No. 47.
1 x Key for Telephone No. 47.
1 x Cord, Instrument No. 222.
1 x Receiver, Bell No. 1A.
1 x Glass No. 13.
1 x Transmitter No. 9.

Telephone Mark 235 includes also:-
1 x Hook, Receiver F.
1 x Switch, Receiver No. 2.
1 x Transmitter, No. 1 with Adapter, Transmitter in place of Transmitter, No. 9.

Telephone Mark 4 includes (1947):-
1 x Clip No. 29.
1 x Key, Locks, Telephone No. 47.
1 x Coil, Induction No. 18.
1 x Lock for Telephone No. 47.
1 x Condenser, M.C. No. 102.
1 x Switch, Receiver No. 2.
1 x Glass No. 48.
1 x Hook, Receiver Z.
1 x Telephone No. 184, with Cord, 4/42A, Brown, 28".

Last revised: August 16, 2026