Earlier sorters IBM card sorter

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hollerith census machine sorting box. sorting box adjunct to, , controlled by, tabulator. sorter , independent machine, later development.


original census sorting box, 1890, manual.


sorting cards became issue during 1900 agricultural census, herman hollerith s company developed 1901 hollerith automatic horizontal sorter, sorter horizontal pockets.


in 1908, designed more compact hollerith 070 vertical sorting machine sorted 250 cards per minute.


the type 71 vertical sorter came out in 1928. had 12 pockets hold 80 cards. sort 150 cards per minute.


the type 75, model 1, 19??, 400 cards per minute


the type 75, model 2, 19??, 250 cards per minute








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