Information card retrieval device

Claim 1

An information card retrieval device comprising a multiplicity of information cards each carrying picture information, a multiplicity of jackets each provided with a search code and containing one of said information cards, a plurality of magazines each for containing a plurality of such jackets, a drum for supporting said plurality of magazines in juxtaposition, a means for determining the search code for a desired jacket of said jackets, a selector means actuated by the operation of said determining means a detector means for detecting the addresses of said magazines on said drum to generate detection pulses, a counter means for counting said detection pulses, a register means for setting a desired address of the magazine addresses, a comparator means for comparing the content of said register means with that of said counter means, a driving means for rotating said drum upon instructions from said comparator means and moving a desired magazine of said magazines to said selector means, a means for retreating a jacket-holding means when said driving means stops, and a means for pulling out the jacket selected by said selector means from said desired magazine.