BELLSET No. 26
|Standard GPO Bellset used with Telephones
No. 232 and No. 1/226 or in
only a capacitor and bell
The Bellset is usually wall mounted and the cover was produced in plastic in the colours black, red, green and ivory. The early covers were replaced circa 1963 with a thinner plastic cover coloured grey or ivory.
The early covers were called Part No. 1/SCO/1 Colour, the black being produced in Phenolic Resin, Type GX (Specs BS771 & S116) and the three colours in Diakon, Grade L.A. (Spec S116).
The Grey and Ivory covers were called the Cover No. 71A (Colour). They were made of Toughened Polystyrene Type 1 (Specs BS3126 & S116).
Early bell sets could be fixed under a 100 or 200 type Bakelite table telephone. Special fixing screws (Part 1/SSC/338) are required which were supplied as standard on the earlier bell sets. A Ring-driver No. 5 is used with these special screws. A Cord, Instrument, No. 3/74H (Colour), 9" or Cord, Instrument No. 4/51H, Brown, 9" or Cord, Instrument No 5/22H, Brown, 9" would also be required to connect the telephone to the Bellset. Later Bakelite Bellset covers were fitted with screw called the Part 1/DSC/387.
During the 1950's the capacitor was changed to a later model which was cylindrical in shape.
Introduced circa 1932 and superseded by Bellset No. 50A circa 1983.
Bellset includes (1946):-
Bellset includes (1956):-
Diagram - N526.
Drawing - 63034.
Specification - S89.
Converting a Bellset No. 26 to Bellset No. 25 - professional conversion kit
To connect a Bellset No. 26 to the UK plug and socket system wire as follows:-
Original bell set with Bakelite cover
Later variant with plastic cover
GPO Factories Dept, Cwmcarn. Bellset No. 26 flow line
(Picture dated 1956)
Last revised: October 15, 2023