BELL No. 1A & BELL No. 1A Unmounted
mounted, wooden cased bell box. The bell box comprises of a 1000 ohm
magneto ringer, 16c/s only (AC) and two bell gongs (2.5" / 64mm).
Two variants were produced, one with a bias spring and one without.
The Bell ringer mechanism is called a "Bell No. 1A, Unmounted" and this, on it's own, is generally fitted to most wooden wall phones and Bellsets. This Bell ringer was also produced with a Bias Spring and called the "Bell No. 1A, unmounted, with Bias Spring".
The Bell No. 1 was introduced circa 1913, whilst the Bell No. 1A, Unmounted was introduced circa 1909.
The housing is called a Case No. 3.
Dimensions - 8 inches high by 6¾ inches across.
The Buzzer No. 1 is exactly the same except that the bell gongs and clapper arm on the ringer are not fitted.
Normally fitted with matched bell gongs, but where a distinctive tone is
required, the following combination of 2.5in gongs can be used:-
Therefore it should NOT be used as the only Bellset on any Candlestick or Telephone No. 162. It can, however, be used as a simple extension bell.
Superseded by Bell No. 59A.
Drawing - 1796.
Drawing - 62933 (unmounted Mk 234).
British Ericsson (ETL) produced some of these bells and their part number was N3100T.
How to wire your Bell No. 1A to work on a modern telephone sockets as a bell only
Bell No. 1A Unmounted
Bell No. 1A, unmounted
Bell No. 1A, unmounted, with Bias Spring
Last revised: March 25, 2023