Improvements in Intercommunication Telephones and Switches therefor

28,922. Bell, F. G. Dec. 18. Telephone systems; telephones. - In an intercommunication telephone set, the line-selector A is attached to the transmitter M, which is revolubly mounted so as to be agitated by the use of the lineselector. The end of the selector is formed with a hole H which engages with the convex surface of the contact-studs c , c , &c. and thus keeps the selector in position. The indicating numbers may be marked on the centre of the contact-studs, so as to be visible through the hole H, thus avoiding the use of separate number plates. In a modification, the end of the line-selector is forked, as shown in Fig. 3.