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The Western Electric 500-type telephone replaced the 300-type, which had been produced since 1936. The model 500 line was designed by the firm of industrial designer Henry Dreyfuss, the product of several years of research and testing in collaboration with Bell Laboratories and Western Electric. Development started in 1946 with early sketches ...
Henry Dreyfuss (March 2, 1904 – October 5, 1972) was an American industrial designer. He is known for designing the Western Electric Model 500 telephone , the Westclox Big Ben alarm clock, and the Honeywell T87 Round Thermostat .
The telephone was produced at the Western Electric Indianapolis, and later Shreveport Works plants, also the production location of 500 and 2500 series telephones. The Trimline telephone is often confused with the Princess because the Trimline dial lights up, although the dial on the Trimline is in the handset.
A 220 Trimline rotary desk phone, showing the innovative rotary dial with moving fingerstop Early Touch Tone Trimline with round buttons and clear plastic backplate and round non-modular handset cord Redesigned touch-tone desk model Trimline, manufactured on January 9, 1985 The Trimline 2225, one of the last phones made at the Indianapolis Works in 1986 Early foreign made Trimline, December ...
The model 302 telephone is a desk set telephone that was manufactured in the United States by Western Electric from 1937 until 1955, and by Northern Electric in Canada until the late 1950s, until well after the introduction of the 500-type telephone in 1949. The sets were routinely refurbished into the 1960s.
The first two letter series tractors (the A and B) were the first to receive the new modern styling, and other models were added later. The Dreyfuss styling was intended to help Deere & Company compete with the forthcoming Farmall "letter series" of tractors, which, along with the Ford-Ferguson, were John Deere's largest competition at this ...
The 302 had been issued since 1937, but starting in 1950, units were replaced with the new 500-series sets, without having served their useful component life. The 5300 and 5400 series of telephones consisted of the 300-series and the 400-series models converted to approach the appearance and performance of the model 500. [ 1 ]
A typical volume of Bell System Practices from the 1970s. The Bell System Practices (BSPs) is a compilation of technical publications which describes the best methods of engineering, constructing, installing, and maintaining the telephone plant of the Bell System under direction of AT&T and Bell Telephone Laboratories. [1]