BELLSET No. 26


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

The Bellset is usually wall mounted and originally had a black or coloured Bakelite case.

Later versions had a plastic cover in elephant grey or ivory and the capacitor 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.

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 Parts, No. 2/SSC/17.
2 x Parts, No. 1/SSC/338.
1 x Parts, No. 1/SGU/1 (Colour).
1 x Parts, 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 Parts, No. 2/SSC/17.
2 x Parts, No. 1/SSC/338.
1 x Parts, No. 1/SGU/1 (Colour).
1 x Parts, No. 1/SCO/1 (Colour).
2 x Washers, Locking, No. 1-2 BA.

Diagram - N526.
Drawing - 63034.

Adjustment of Magneto bells

GPO Engineering Instructions on Fire Systems

Click here for the difference between a Bell and a Bellset

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.


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

 

 
 
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Last revised: May 14, 2020

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