BELLSET No. 26


Standard GPO Bellset used with Telephone No. 232 and No. 1/226 or where a capacitor and bell is required.

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 1975 with a thinner plastic cover coloured grey or ivory. 

The early covers were 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 later cover was called the Cover No. 71A Colour and made of Toughened Polystyrene Type 1 (Specs BS3126 & S116).

The early cased bell sets could be fixed under a 100 or 200 type table telephone.  Special fixing screws are required which supplied as standard on the earlier bell sets.   A Cord, Inst., No. 4/51H, Brown, 9" or Cord., Inst., No 5/22H, Brown, 9" would also be required.

During the 1950's the capacitor was changed to a later model which was cylindrical in shape.

There is also a Bellset No. 26D.  This contains a Bell No. 59D- 1 unmounted and is used on PST installations.

Introduced circa 1932 and superseded by Bellset No. 50A circa 1983.

Bellset includes (1946):-
1 x Bell No 59A, Unmounted.
1 x Bell-gong No. 2, Nickelled.
1 x Bell-gong No. 2A, Nickelled.
1 x Clip No. 29.
1 x Condenser, M.C., No. 102.
2 x Part, No. 2/SSC/17.
2 x Part, No. 1/SSC/338.
1 x Part, No. 1/SGU/1 (Colour).
1 x Part, No. 1/SCO/1 (Colour).
2 x Washers, Locking, No. 1210.

Bellset includes (1956):-
1 x Bell No 59A, Unmounted.
1 x Bell-gong No. 2, Nickelled.
1 x Bell-gong No. 2A, Nickelled.
1 x Clip No. 29.
1 x Capacitor, Paper No. 7705.
2 x Part, No. 2/SSC/17.
2 x Part, No. 1/SSC/338.
1 x Part, No. 1/SGU/1 (Colour).
1 x Part, No. 1/SCO/1 (Colour) Cover - superseded by Cover No. 71A (Colour).
2 x Part, No. 1/DCL/110. (Capacitor clips)
1 x Part, No. 18/SBU/18. (Bush)
1 x Part, No. 1/SBA/6. (Baseplate)
2 x Washers, Locking, No. 1-2 BA.
1 x Parts, No. 1/SST/63.

Diagram - N526.
Drawing - 63034.
Specification - S89.

Adjustment of Magneto bells

Click here for the difference between a Bell and a Bellset

How to spot a reproduction Bakelite Bellset cover

Covers and dimensions

To connect a Bellset No. 26 to a UK plug and socket system please wire as follows:-

  1. Connect the white wire of a line cord (or connect directly to a line socket on terminal 5) - Bellset terminal 2.
  2. Connect the blue wire of a line cord (or connect directly to a line socket on terminal 3) - Bellset terminal 9.
  3. Connect a 3.3k ohm resistor between Bellset terminals 9 and 8.

 


Original bell set with Bakelite cover

 

Later variant with plastic cover


GPO Factories Dept, Cwmcarn.  Bellset No. 26 flow line (Picture dated 1956)

 

 
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Last revised: March 03, 2021

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