BELLSET No. 21


Wooden Bellset used on long lines.

Used on the following systems (1928):-

  1. For C.B., C.B.S., Nos. 2 and 3, or magneto systems; with Tele-
    phone No. 154 or No. 196LB.  Diagram C.B. 1333.
  2. For C.B.S. No. 1 systems; with Telephone No. 154.  Diagram C.B.S. 559.
  3. For automatic systems; with Telephone 156LB.  Diagram A.T. 1872.

Used on the follow systems (1946):-
For use with Telephones, Nos. 156LB, 196LB ... and l/196LB.

There were variations of this Bellset - the Mark 234 and Mark 3.

Bellset includes (1928):-
1 x Bell, No. 1A, unmounted.
1 x Coil, Induction, No. 15.
1 x Condenser, M.C., No. 30.

Bellset includes (1946 and 1956):-
1 x Bell No. 1A, Unmounted.
1 x Clip No. 14.
1 x Bell-gong No. 2, Oxidized.
1 x Bell-gong No. 2A, Oxidized.
1 x Coil, Induction, No. 21A.
1 x Condenser, M.C., No. 102
1 x Case No.1.

Circuit diagram - N521.

Picture taken in 1929.

Adjustment of Magneto bells

 
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Last revised: April 02, 2020

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