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    3.
    发明专利
    未知

    公开(公告)号：MX145515A

    公开(公告)日：1982-03-01

    申请号：MX17312078

    申请日：1978-04-14

    Applicant: IBM

    Inventor： SCHAEFER JOHN O'NEIL

    IPC: B41J32/00 ,  B41J31/09 ,  B41J33/28 ,  B41J33/38 ,  B41J33/56 ,  B41J35/10 ,  B41J35/14 ,  B41J35/23 ,  B41J35/28 ,  B41J33/00

    Abstract: Disclosed is a cartridge and a cartridge assembly for a typewriter, the assembly comprising a pair of case members, each case having a separate chamber and including means for releasably connecting the two cases in superimposed overlapping relation. First and second pairs of spaced apart ribbon guide means are associated with each of the cases and dimensioned to be aligned, first pair to second pair. Each of the case members includes a separate supply and take-up spool, the supply spool having a fixed axis of rotation and the take-up spool having a shiftable axis of rotation along a translatory path. An opening is provided along one edge of each of the cases, the openings being aligned in the paths while the take-up spools are biased in their respective paths towards the opening. Also disclosed is a drive mechanism for the cartridge in which the type of ribbon (for example, carbon or cloth) is indicated on the cartridge by a cam arrangement and, upon insertion into the machine, automatically selects the correct feed and ribbon lift mechanism to minimize ribbon wastage.

    ROTARY-TO-LINEAR MOTION CONVERSION DEVICE AND TYPEWRITER CHARACTER SELECTION MECHANISM INCLUDING THE SAME
    8.
    发明专利
    ROTARY-TO-LINEAR MOTION CONVERSION DEVICE AND TYPEWRITER CHARACTER SELECTION MECHANISM INCLUDING THE SAME 未知

    公开(公告)号：DE3061835D1

    公开(公告)日：1983-03-17

    申请号：DE3061835

    申请日：1980-01-25

    Applicant: IBM

    Inventor： SCHAEFER JOHN O'NEIL

    IPC: B41J1/60 ,  B41J7/50 ,  B41J7/52 ,  B41J7/54 ,  B41J7/56 ,  F16H25/12 ,  F16H53/04 ,  F16H21/20

    Abstract: A rotary-to-linear motion conversion device comprises a rotatable shaft (32) and an annular cam surface member (36) encircling the shaft (32) and pivotally mounted on a bracket (44) secured to the shaft (32). The member (36) is engaged by an arm (27) of a pivoted cam follower (26) biased towards the member (36). The portion of the member (36) diametrally opposite the pivot (40) engages a slider (48) rotatable with the shaft (32). The slider (48) engages a flange (56) and a collar (60). Between the collar (60) and a fixed stop (64) are four selectively withdrawable interposers (70, 72, 74 and 76) of increasing incremental widths. Two such devices are included in a typewriter character selection system to control tilt and rotation of a typehead. The tilt and rotate cam members are mounted so that they pivot to vary the cam rise. The rise of the cam is controlled by the interposers under the influence of the keyboard.

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