BELLSET No. 25

Bakelite cased Bellset which superseded the wooden Bellset No. 1 but was similar electrically.

Introduced in the early 1930's to match the new Bakelite cased Telephone No. 162. There was no rush to introduce this new Bellset as the GPO had large numbers of the wooden Bellset No. 1 in stock.

Fitted with a capacitor (shown to the left of the bell ringer), a two winding induction coil (shown to right of the bell ringer) and a bell ringer. The ringer mechanism is a Bell No. 59A (twin 500 ohm ringer coils).

The Bakelite covers were generally supplied coloured black, but could also be obtained in Jade green, Chinese red or Ivory.

The Bellset is usually wall mounted and the cover was produced in plastic in the colours black, red, green and ivory.

The 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).

Used on non-ASTIC telephones i.e. Candlesticks and Telephone No. 162 and No. 196.

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.

If a telephone is mounted on the Bellset then a Cord, Inst., No. 3/74H (Colour), 9" is required.

This Bellset can difficult to find nowadays, but a conversion kit is now available to fit to any Wooden or Bakelite Bellset. Click here for more information.

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 Coil, Induction, No. 18.
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 Coil, Induction, No. 18.
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

Circuit diagram - N525.

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

Some of these were made by Ericsson, their Model No. 3098 - Diagram N50834 (dated 1935).

Additional Pictures