Wall mounted C.B. Bellset with magneto bell, capacitor and induction coil.

Note the lack of bell gongs - the ringer clapper hits the two metal flanges fixed to the Bellset cover (see picture lower left).  Made by Western Electric as their type 131A and later the type 1131A.

Used with Telephone No. 63 which was a basic wall telephone for use in hotel rooms.

Bellset includes (1928):-
1 x Bell, Magneto type, 1000 ohms.
1 x Coil, Induction No. 3 or No. 14.
1 x Condenser, M.C. No. 2.

Circuit diagram - N511.

Diagram - N.T. 9400.

Adjustment of Magneto bells


BACK Home page BT/GPO Telephones Search the Site Glossary of Telecom Terminology Quick Find All Telephone Systems

Last revised: October 16, 2023