A NOVEL INSTRUMENT.
THE TELEPHONE AUTO-
COMMUTATOR.
In a recent issue of the " Scientific American " mention is made of a novel instrument which has lately been installed in the Paris offices of the "Direction Generate des Postes efc des Telegraphes."
The apparatus, supplied to each contributor to the telephone system, beyond the usual devices is supplied with a dial which has numbers up to, say, 9,999, each instrument having its special number. The dial in motion, carries along with it a toothed wheel, which is connected with the bat-' tery and breaks the circuit of a number equal to the figures indicated in' any., movement .in bringing each required figure into action. The commutator in the central office is actuated by the current — an elec-tro-magnet causing a vertical rod to ascend ono notch. The apparatus appears at present to be serviceable to a. hundred subscribers. * '■'■■■'•■% - - Less than a year back a contemporary published a letter from a correspondent who offered to discuss with any mechanical or electrical expert an idea he had for avoiding the cost and delay entailed by speakers having to be connected by the central office.
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https://paperspast.natlib.govt.nz/newspapers/TS19010501.2.12
Bibliographic details
Star (Christchurch), Issue 7087, 1 May 1901, Page 2
Word Count
189A NOVEL INSTRUMENT. Star (Christchurch), Issue 7087, 1 May 1901, Page 2
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