Abstract: A retainer element is adapted to prevent randomly filed cards, microfiche, microfiche jackets, or microfilm jackets, from accidental fall from capsules in which they are stored. The retainer element automatically moves to a card-protecting position responsive to removal of the capsule from an information retrieval device, so that cards cannot become lost or misplaced at any time when a capsule is not within the information retrieval device. The retainer element is automatically moved, however, to a card-freeing position responsive to insertion of the capsule in the retrieval device. With the capsule in the retrieval device, a control finger is moved to a position overlying the corners of the cards, microfiche, microfiche jackets, or microfilm jackets, at a particular stage of the selection cycle, and becomes a fulcrum about which selected cards pivot to positions in which the selected cards are engaged in an internal notch of the associated capsule, to facilitate their removal.

Abstract: A self-contained desk-top retrieval device for randomly filed cards or other records, accepts a capsule containing a quantity of the cards, and ejects from the capsule the specific card or cards desired. Each capsule has a series of card support bars differing from those of any other capsule, so that each capsule accepts only cards that are edge-coded to receive the bars. Within each capsule, the accepted cards are further edge-coded, whereby a coded input to a selector slide mechanism underlying the capsule, operates the slides to render accessible only those cards within the capsule that respond to the selected code. Through use of a keyboard incorporated in the equipment, or by operation of a remotely located keyboard of a computer terminal or the like, assurance is provided that no capsule will be accepted by the equipment that does not contain the card or cards desired, and it is further assured that within the proper capsule, no cards will be ejected that do not respond to the selected code.