NEWSfrom All Quarters of the "World - ericssonhistory.com
NEWSfrom All Quarters of the "World - ericssonhistory.com NEWSfrom All Quarters of the "World - ericssonhistory.com
checked and supplemented if necessary. Such amendments are seldom requiredbut can be effected very easily since they are made the following day.Time factors and codes are inserted manually on a summary (fig. 6) fromwhich the cards are punched.From these cards, the monthly machine statistics are produced by automaticmachine operations. An example is shown in fig. 7. The weekly statistics showdaily load, while the monthly statistics show total load.What makes the statistics valuable for the Punched Card Department is thefact that they are based on reliable and correct time factors.The statistics are analysed; from them the monthly summaries for thedifferent runs are made, and diagrams for the most important types of machinesare drawn. All this provides a basis for a punched card supervisor to plan andimprove procedures, control and reduce costs as well as coordinate the threeimportant factors:operators—machines—processes
NEWS fromAll Quarters of the "WorldMillionth 500-Line SelectorGift to DesignerAt a ceremony at the Soderhamnfactory of L M Ericsson on Wednesday,October 12, 1960, the millionth500-line selector passed along the assemblyline to its final testing station.Among those present were MessrsSven T Aberg, knut Kaell, MaltePatricks and Hans Werthen.In a speech to mark the occasionMr Aberg thanked all those who havebrought the company's products to theposition they occupy on the worldmarket today. His remarks wereaddressed especially to Mr Kaell, thedesigner of the 500-selector, whichhad now reached the million mark.Mr Aberg presented the jubileeselector to Mr Kaell as a memento.The basic principle of the 500-selector is the bare wire multiple inventedin 1913 by Axel Hultman,Telephone Director of the SwedishTelecommunications Administration.In 1918 Knut Kaell made a study ofthe most suitable size of selector inrelation to cost and volume, andfound that a 500-line selector wouldbest meet the requirements. In cooperationwith David Lienzen hedesigned a prototype of the 500-selectorwith bare wire multiple, whichL M Ericsson still manufactures.The first exchange operating on thissystem was opened in Rotterdam onMay 10, 1923, being followed byexchanges at Hamar and Kristiansundin Norway in the autumn of the sameyear, and at Stockholm, Norra Vasa,at the New Year 1924. Orders thereafterflowed in in rapid succession. Bythe end of 1949, 500,000 of theselectors had been made at the headfactory in Stockholm.The 500-selector of today is stillbased on the original ideas, though certainparts have been redesigned andimproved in the course of the years.New production methods, new materials,and the severer operating requirementsof exchanges have beenthe guiding factors.All in all, at the year end 1959,3,111,940 lines were connected to L MEricsson 500-selector exchanges, and401,110 lines were on order. Someexchange equipments have been manufacturedby subsidiary companies,Elektrisk Bureau in Norway andFATME in Italy. The oldest exchangesare still operating with theoriginal selectors.(Above) Mr Sven T Aberg, president of L MEricsson, presents the millionth selector to thedesigner, Mr Knut Kaell.(Below) Messrs Kaell and Patricks, JohnEricsson, Manager of the Soderhamn factory,Gosta Eriksson, foreman, and Mr Werthenfollow the selector on its passage along theassembly line.
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- Page 5 and 6: application stage. To be sure, the
- Page 7 and 8: varistors and the British Post Offi
- Page 9 and 10: Gas pressure is being increasingly
- Page 11 and 12: In the field of radio link and wave
- Page 13 and 14: Fig. 4 X 7798Integrated time-multip
- Page 15 and 16: e calculated at a reasonable cost.
- Page 17 and 18: cally attractive. This means that m
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- Page 23 and 24: Fig. 9 X 7790Exploded drawing of th
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- Page 33: in that machine's "output" column.
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checked and supplemented if necessary. Such amendments are seldom requiredbut can be effected very easily since <strong>the</strong>y are made <strong>the</strong> following day.Time factors and codes are inserted manually on a summary (fig. 6) fromwhich <strong>the</strong> cards are punched.From <strong>the</strong>se cards, <strong>the</strong> monthly machine statistics are produced by automaticmachine operations. An example is shown in fig. 7. The weekly statistics showdaily load, while <strong>the</strong> monthly statistics show total load.What makes <strong>the</strong> statistics valuable for <strong>the</strong> Punched Card Department is <strong>the</strong>fact that <strong>the</strong>y are based on reliable and correct time factors.The statistics are analysed; from <strong>the</strong>m <strong>the</strong> monthly summaries for <strong>the</strong>different runs are made, and diagrams for <strong>the</strong> most important types <strong>of</strong> machinesare drawn. <strong>All</strong> this provides a basis for a punched card supervisor to plan andimprove procedures, control and reduce costs as well as coordinate <strong>the</strong> threeimportant factors:operators—machines—processes
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