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    2.
    发明专利
    未知

    公开(公告)号：NO142657C

    公开(公告)日：1980-09-24

    申请号：NO754353

    申请日：1975-12-22

    Applicant: IBM

    Inventor： ABELL WILLIAM ALBERTUS JR ,  FIELD THOMAS RAY ,  HAUS RALPH ANTHONY ,  SHAKIB IRAJ DAVID

    IPC: B41J7/50 ,  B41J7/54 ,  B41J7/32 ,  B41J1/60

    Abstract: Disclosed is a mechanism for shifting the rack of a selection mechanism for a single element printer from one position to another in timed relationship to the translation of a barrel cam which provides the necessary mechanical input to control the amount of rotation of the typehead. The control of the rack shift mechanism is a cam arrangement operated in timed relationship with the translating barrel cam to provide for the shifting of the rack at the beginning of each print cycle, if necessary, and the retaining of the rack in its shifted position at the completion of the cycle, thereby eliminating the necessity to provide for the time required to shift the rack back to its home position at the end of the cycle. The elimination of the restore operation of the rack provides more time during the cycle to operate the selection mechanism and accomplish printing or conversely provides for a smaller amount of time being required for the necessary functions thereby providing the capability of operating the remainder of the mechanism at a faster rate.

    3.
    发明专利
    未知

    公开(公告)号：CH598012A5

    公开(公告)日：1978-04-28

    申请号：CH1499476

    申请日：1976-11-29

    Applicant: IBM

    Inventor： ABELL WILLIAM ALBERTUS JR

    IPC: B41J19/62 ,  B41J21/08

    Abstract: Disclosed is a control mechanism and device for conditioning a typewriter to backspace on every other depression of a keylever and at the same time to prevent printing on all depressions of keylevers. Additionally, the typewriter is conditioned to not print on those cycles in which a backspace movement is not included.

    4.
    发明专利
    未知

    公开(公告)号：BR9002994A

    公开(公告)日：1991-08-20

    申请号：BR9002994

    申请日：1990-06-26

    Applicant: IBM

    Inventor： ABELL WILLIAM ALBERTUS JR ,  BRUNER DAVID ALLEN

    IPC: H01H13/14 ,  H01H3/12 ,  H01H13/70 ,  H01H3/60

    Abstract: A long keybutton (10) is stabilized with a pair of arms (22) and an interconnecting shaft (26). The ends of the arms (32) are connected to the keybutton using a thin serpentine section (28) which distributes stress and forces to improve life of the part, and permits integral molded keybuttons. The integral molded part with the stability of the portions of the keybutton permits the automated assembly of the stabilized keybutton with the keyboard frame (14).

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