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    1.
    发明专利
    未知

    公开(公告)号：DE1058101B

    公开(公告)日：1959-05-27

    申请号：DEI0009554

    申请日：1954-12-22

    Applicant: IBM DEUTSCHLAND

    Inventor： ROTH ROBERT INGERSOLL ,  JOHNSON REYNOLD BENJAMIN

    IPC: H01C8/02

    Abstract: 758,508. Electric digital-data-storage apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 21, 1954 [Dec. 24, 1953], No. 36898/54. Class 106 (1). A data storage device utilizes the physical phenomenon that if two electrodes are placed in a mixture of finely divided metallic particles and a non-conducting fluid, and if a high potential is momentarily applied across the two electrodes, then the metallic particles are drawn towards the electrodes and form a conductive path between them which path remains, even when the potential is removed, until the mixture is agitated to redisperse the metallic particles. In the particular embodiment described a number of metal containers hold the mixture (tricresyl phosphate and iron filings) each one 17, Figs. 1 and 2, being supported on a bridge plate 19 insulated from a base plate, and each one having associated with it a set of 10 electrodes 42 which extend into the mixture and which are supported on a frame 39 pivoted at either end by links 35, 36 to a second frame 28 slidably mounted on pins 26 to be able to move in a direction parallel to the base plate. A spring 47 tends to move the upper frame 39 to the right, Fig. 2, but this is prevented by a member 49a, and a spring 44 tends to keep the lower frame 28 in contact with a fixed abutment 46. In operation data is entered by first energizing a solenoid to lift the member 49a, thus releasing the upper frame and allowing it to move to the right and downwards, bringing each electrode to a distance of 0.025 inch from the base of its associated container, and data is entered into a particular container by applying a high-potential pulse (300 V.) between the container and a selected electrode thus forming a conductive path between the selected electrode and the base of the particular container. A 10- key keyboard controlled circuit is described for entering data successively into each container. Data stored in a particular container is read out by applying a voltage to the particular container and observing to which of the associated 10 electrodes the voltage is transmitted. An electrical read-out circuit suitable for controlling a record-card punch is described. The store is cleared by momentarily energizing a solenoid 60 which causes the lower frame 28 to be pulled to the left, Fig. 2, and by de-energizing the first mentioned solenoid so that as the lower frame moves to the left, back to its original position under control of the spring 44, the link 35 engages the member 49a and raises the electrodes returning them to their original positions, thus the device is reset and each container of fluid is agitated.

    3.
    发明专利
    未知

    公开(公告)号：DE941938C

    公开(公告)日：1956-04-19

    申请号：DEI0002962

    申请日：1950-10-01

    Applicant: IBM DEUTSCHLAND

    Inventor： ROTH ROBERT INGERSOLL

    Abstract: 698,674. Supply systems for discharge lamps. BRITISH TABULATING MACHINE CO., Ltd. April 17, 1950 [April 19, 1949], No. 9375/50. Drawings to Specification. Class 38 (iv). [Also in Groups XIX, XX and XL (b)] In a machine for making photographic film records of punched record cards, a fluorescent discharge lamp for exposing through cardcontrolled shutters a continuously moving photographic film is fed from a multivibrator so that the discharge frequency is sufficiently raised to avoid striations appearing across the width of the exposed and developed film record, which comprises a dark ground having clear spots in positions corresponding to the card perforations.

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