TELEPHONE No. 76 | |||||||||||||||||||||||||||||||||
 Automatic
Pedestal TelephoneCandlestick table telephone used on S.T. & C's (late Western Electric Co.) Rotary Exchanges at Darlington (October 1914) and Dudley (September 1916). Darlington exchange had an initial capacity of 800 lines but could provide for a total capacity of of 2,800 lines.
The components could not be fitted within the case of the telephone so a Bellset No. 1
with bias spring would be installed. Mark 235 - Western Electric Co. - Used on Dudley Exchange (used Dial No. 6) - see picture to the right. Some of the information here was taken from Diagram N176, the original dated 1918 and the issue 2, dated 1919. The Issue 2 diagram shows the Mk235 set with a Dial No. 6. The GPO Stores Rate Book 1928 confirms the above but also introduces the Dial, Automatic No. 8FW in place of the Dial, Automatic No. 6. A Dial, Auto No. 10FW may also be found on these telephones. The equivalent wall set is the Telephone No. 65. Superseded by the Telephone No. 150W in 1928. Circuit diagram - N176. Circuit diagram - A.T. 318. Telephone mouthpiece sanitisers Click here for more information on Bias Springs.
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Last revised: February 20, 2023FM |