During the 1890's Herman Hollerith, an employee of the Census Bureau, invented the punched-card, and all census work until 1948 was done by means of millions of these cards. The majority of machines used to sort the cards separating them into 12 stacks. There were a few machines that could separate cards into 30 stacks. Final punched card sorting required many passes of the cards to obtain useful data. In the 1940's the Census Bureau asked NIST engineers if it was possible to develop a machine to sort punch-cards into as many categories as desired. The Conveyer Belt Card Sorter was the answer to this request.
The Conveyer Belt Card Sorter was invented by Dr. Jacob Rabinow.
Escort Memory acts as a set of Nylon Cams.
The invention is U.S. Patent No. 2,961,093.
Last Updated on October 24, 2004
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