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Kellogg company logo as used from the 1920s to the 1950s. The Kellogg Switchboard and Supply Company was an American manufacturer of telecommunication equipment. Anticipating the expiration of the earliest, fundamental Bell System patents, Milo G. Kellogg, an electrical engineer, founded the company in 1897 in Chicago to produce telephone exchange equipment and telephone apparatus.
A split-50 M-type 66 block with bridging clips attached. A 66 block is a type of punch-down block used to connect sets of wires in a telephone system. They have been manufactured in four common configurations, A, B, E and M. [a] A and B styles have the clip rows on 0.25" centers while E and M have the clip rows on 0.20" centers.
Hammacher Schlemmer began printing and distributing a company catalog in 1881. In 1912, it printed its largest catalog to date, spanning 1,112 pages. A hardbound copy of the 1912 catalog is housed in the Smithsonian’s permanent collection. By 1926, the Hammacher Schlemmer had moved uptown to a larger space at the company's present location of ...
Western Electric Co., Inc. was an American electrical engineering and manufacturing company that operated from 1869 to 1996. A subsidiary of the AT&T Corporation for most of its lifespan, Western Electric was the primary manufacturer, supplier, and purchasing agent for all telephone equipment for the Bell System from 1881 until 1984, when the Bell System was dismantled.
In 1947, the company was the fourth-largest mail-order distributor in the United States with $79.2 million in sales and changed its name to Aldens, Inc. [2] In 1957, sales were $102.4 million, they had 4,795 employees, and operated catalog telephone stores in 68 cities. [2]
The model 500 telephone was designed for long service life. Telephones in the Bell System were owned by and leased from the telephone company, which was responsible for keeping them in good condition. The telephones were rugged and reliable and intended to last for decades with little maintenance.
A telephone keypad is a keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number. It was standardized when the dual-tone multi-frequency signaling (DTMF) system was developed in the Bell System in the United States in the 1960s – this replaced rotary dialing , that had been developed for ...
Hand telephone sets consist of three principal parts: the handset, a handset mounting, and an apparatus box, called variously desk set box, bell box, subscriber set, or just subset. This box is typically mounted on a wall or desk-side, and contains an electromagnetic bell ringer and a speech transformer , called induction coil , to connect the ...
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