TELEPHONE No. 156 | ||||||||||||||||||||
Automatic and CBS Pedestal Telephone A steel stemmed candlestick table telephone used in CBS No's 1, 2, 3 & Magneto exchange areas. Similar to the Telephone No. 150 it was designed to use a local battery for connection to mainly C.B.S. type exchange systems. But it could also be used in Automatic exchange areas with a Bellset No. 21 on long lines where a normal instrument would give faint speech (Diagram AT1872). In this instance local batteries would still need to be provided and connected to the Bellset. This telephone has no internal components except for switch hooks and the phone requires the correct Bellset to work properly. The switch hook springs in this telephone were totally insulated with no connection to the casing, which made the phone electrically safe. The switch hook consists of two contact sets, one set has three contacts that all make together and the other has a changeover set. Used on the following circuits:- Early table telephones were connected to the internal wiring with a Strip, Flexible Cord Connection. Click here for more information. Telephone includes (1928 and 1946):- To be requisitioned separately as required:- This telephone superseded the Telephone No. 4 and the Telephone No 134. When fitted with a Transmitter No. 1 a Label No. 43C would be fitted between the speaking tube and the transmitter body. This label advised of the Exchange name and number. When fitted with a Transmitter No. 2 a Label No. 78E is fitted. Two Transmitters were used on this telephone. Originally fitted with a 'Transmitter No. 2', this was superseded by the later style Bakelite 'Transmitter No. 22' which accepted the 'Transmitter Inset No. 10' which was itself superseded by the 'Transmitter Inset No. 13'. See also the Telephone Efficiency Committees Report on Common Battery Area telephones. Circuit diagram - N256. Circuit diagram - AT 1872. Drawing - 9543. Specification - D788. How to wire the Telephone No. 156 to make it work in the UK on Plug and Socket Click here for pictures of a Candlestick before refurbishment Click here for Candlestick construction and how to dismantle the phone Candlestick Manufacturing (Messrs Keitmann) How to convert to Plug and Socket Collectors Information - what to look for Telephone mouthpiece sanitisers Terminal Markings
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Last revised: October 17, 2023FM | ||||||||||||||||||||
