. The practical telephone handbook and guide to the telephonic exchange . —a pair of receivers being allottedto each listener, one of the pairbeing connected to one trans-mitter, and the other to a separatetransmitter fitted on the oppositeside of the prompters box. Thefigure shows the connection oftwo such transmitters t, and t,to sixteen receivers arranged inpairs, a b, a b. A listener using apair of receivers would thus beconnected by the left-hand one ato the left-hand transmitter t, andby the b receiver to the right-handtransmitter t. With such an ar-rangement the transmitted soundswill b
. The practical telephone handbook and guide to the telephonic exchange . —a pair of receivers being allottedto each listener, one of the pairbeing connected to one trans-mitter, and the other to a separatetransmitter fitted on the oppositeside of the prompters box. Thefigure shows the connection oftwo such transmitters t, and t,to sixteen receivers arranged inpairs, a b, a b. A listener using apair of receivers would thus beconnected by the left-hand one ato the left-hand transmitter t, andby the b receiver to the right-handtransmitter t. With such an ar-rangement the transmitted soundswill be most intense from thatone of the two transmitters which nearest the singer on the stage,so that a distinctly different result is obtained from the tworeceivers of each pair. The effect produced is somewhatanalogous to the action of a stereoscope in giving solidityto a double photographic picture. In the case of the telephoneit is difficult to imagine that the singer is not close in frontof the listener. Police and Fire Alarms.—Much use is now being made of. 499.—Double Receiverfor Electrophone 552 PRACTICAL TELEPHONE HANDBOOK the telephone for the purpose of joining up branch fire andpolice stations, and also for the purpose of giving alarms offire, etc., by the general public. For the latter purpose thetelephone has the advantage over ordinary electric alarmsthat particulars of the case can be supplied by the persongiving the alarm, so that the needful apparatus may be sentto the exact spot, and valuable time thus saved. When intended for use by the general public, the telephone ■Mil STAGE OF THE OPERAt ♦ «.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttelephone, bookyear19
