Almon Strowger
Almon Brown Strowger (1839 - May 26th 1902) is a contractor of Undertaking American. He is the first inventor to deposit an exploitable patent intended for the automatic Téléphonie.
Almon B. Strowger industiellement deposited a exploitable Brevet in 1891 (US Patent No 447918 6/10/1891) on a " Switch automatique" intended to establish, without the assistance of a human operator a connection between two subscribers of a telephone center.
American contractor of undertaking with Kansas City (Missouri), it is persuaded that the wife of its competitor, employed as operator of the telephone to the manual telephone center of the local company of telephone, takes part in a deflection of trade of the customers in mourning to the profit of her husband.
It entrepend then of the studies in order to eliminate the manual operations during the establishment of a communication. It then designs a selector which, by to some extent imitating the movement of selection of the operators, is the object of its patent.
This switch allows him the November 3rd 1892, to bring into service the first automatic telephone center of almost 75 subscribers extensible at 99 in the city of the Door in Indiana. This exchange was built with its associates Joseph B. Harris and Moses A. Meyer by their company " Stowger Automatic Telephones Exchange Compagnie" founded in October 1891.
The selection of the subscriber to be called was made, in this first version, by pressing the number of time necessary on keys representing the hundreds, tens and units of the number to be reached.
To improve the use of its invention, Strowger, with its associates, then develops, in 1896, the dial of classification to ten digits of the telephone. Telephone centres using the " strowger" will cover planet and will be famous for their robustness.
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