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    3.
    发明专利
    未知

    公开(公告)号：DE1611448B1

    公开(公告)日：1970-07-30

    申请号：DE1611448

    申请日：1967-09-13

    Applicant: IBM

    Inventor： JAMES YOUNG RICHARD

    IPC: B41J5/22

    Abstract: 1,141,587. Typewriters, &c. INTERNATIONAL BUSINESS MACHINES CORP. 1 Aug., 1967 [14 Sept., 1966], No. 35210/67. Heading B6F. In a keyboard-operated printer comprising printing means such as printing head 12 and a platen 11 movable relatively for character spacing, and wherein operation of a character key sets storage means e.g. an interposer 25 which selects and controls the printing of the character, means are provided whereby if a character key is depressed whilst a control means causing relative movement of the printing means and platen for carriage return or tabulation is operative, the storage means is prevented from effecting printing until the relative movement is completed. Depression of a character key such as 21 or 22 depresses an associated interposer 25 to release the latter from a latch spring 25a whereupon a spring 25b moves the interposer rightwardly beneath the latch 25a to a storage position. Normally, a cyclicallyrotatable shaft 26 is now operated to move the interposer leftwardly and during such movement the interposer acts upon bails 25c which through mechanism 30 effects character selection, printing and letter spacing escapement operation. Rotation of the shaft 26 and power driving of the mechanism 30 is accomplished through a cyclically-operable spring clutch 40. The clutch 40 is rendered operative by leftward movement of a link 42 under the action of a spring 44. Such movement is normally prevented by the engagement of a latch 43 on the link 42 with a stationary frame part 14, but downward movement of an interposer 25 depresses a bail 28 which releases the latch 43, so that link 42 moves leftwardly and operates the clutch 40 to initiate a printing cycle. A ball interlock 29 is provided which prevents the simultaneous presence of two interposers 25 in the storage position but permits the movement of an interposer to storage position whilst a previous set interposer is operating to effect printing. Carriage return.-Character-spacing movements of the type-head carriage 13 are effected under control of a conventional escapement mechanism by a spring 54 through a capstan 53 and cord 51. For carriage return a key 23 is depressed causing, through mechanism 60, energizing of a motor 55 which drives the capstan 53 so as to return the carriage 13 and wind up the spring 54. A shaft 61 is rotated anti-clockwise by the mechanism 60 to a position where it is retained by the engagement of an arm 62 thereon with a latch 63. Near the end of the return movement a carriage stop 65 engages a stop 64 on a margin rack 66 and moves the rack leftwardly. The movement of the rack 66 operates to release the latch 63 through a bell-crank 68 so that the shaft 61 returns to its initial position and the motor 55 is stopped. Tabulating.-Depression of a tabulation key 24 causes release of the carriage escapement so that the carriage 13 moves freely under the action of the spring 54 until a sensing finger 72 on the carriage engages a pre-set stop. 71. The finger 72 is on a member 73 pivoted by a pin-andslot 74 to the carriage 13 and normally held by a spring 75 in the position shown where the finger 72 is out of alignment with stop 71. Lugs 73a, 73b on the member 73 engage a torsion bar 76 which, when the key 24 is depressed, is rotated and pivots the member 73 about the pin 74 so that finger 72 is now aligned with the stop 71. A catch 77 holds the member 73 in this position until the finger 72 engages the stop 71 whereupon the member 73 is moved leftwardly and clear of the catch 77 so that the parts 73, 76 can return to normal positions wherein control of the carriage 13 by the escapement is restored. Interlock between the carriage return or tabulating mechanism and the printing mechanism.- Means are provided to prevent movement of link 42 to initiate a printing cycle after an interposer 25 has been moved to a stored position, if a carriage return or tabulating action is taking place, but allows printing to take place when the action is completed. A finger 80 attached to a shaft 81 is normally held by a spring 82 clear of a shoulder 45 on the link 42. If, however, a carriage return movement is initiated, the anticlockwise rotation of shaft 61 actuates a link 69 to rotate shaft 81 and move the finger 80 into the path of shoulder 45 so that the link 42 cannot complete an operative stroke until the carriage return is completed and the parts 61, 69, 80, 81 are restored to their normal positions. Similarly, if a tabulating movement is initiated, a link 79 connected to the torsion bar 76 operates the shaft 81 and finger 80. The shaft 81 is mounted in slots 85 so that if a carriage return or tabulation operation is initiated prior to the full restoration of the link 42 from a previous cycle, and the finger 80 strikes the bottom of the link 42, the shaft 81 can move bodily to prevent damage.

    4.
    发明专利
    未知

    公开(公告)号：DE1561241A1

    公开(公告)日：1972-03-09

    申请号：DE1561241

    申请日：1967-01-12

    Applicant: IBM

    Inventor： EDWARD PALMER LEON ,  O'NEIL SCHAEFER JOHN ,  JAMES YOUNG RICHARD

    IPC: B41J7/66 ,  H04L13/16

    Abstract: 1,154,111. Typewriters &c. INTERNATIONAL BUSINESS MACHINES CORP. 3 Jan., 1967 [14 Jan., 1966], No. 192/67. Heading B6F. Machines with types on spherical surfaces; power assisted type actions; permutation typeselecting mechanisms.-A typewriter having a spherical type head 72 mounted on a traversible carriage (not shown) is provided with a character selection mechanism comprising a stack of slides 60, and a plurality of probe members 50 one for each character key lever 20 the probe members being provided with a pair of opposed edges 51, 52 to probe coded slots 61, 62 disposed along opposite edges of the slides and associated with upper or lower case characters, respectively. Depression of a key lever 20 causes a primary dobber 26 to rock downwardly a control link 40 whose lug 47 depresses its associated probe member 50 whereby the latter is biased by a leaf spring 15 to move in one or otherdirection along line L to probe the respective coded slots 61, 62. Probe member is latched in its position by a lug 54, 58 which enters an aperture 35 in a bracket 34. Depression of probe member 50 enables a one-revolution clutch 13 through link 18 and latch 14, whereby a cam controlled slide mechanism 64 releases the slides 60 for movement under bias of springs 63 to rock character selecting latches 11. Slides 60 are then restored by the mechanism 64 and the probe member 50 is restored by the link 40 which is moved forwardly by a leaf spring 43 attached to a bail 42 which is reciprocated by a cam 44 and then upwardly by a leaf spring 46, whereby the arm 59 of probe member 50 is raised when a lever 45 has moved the probe member to release its lug 54 or the link 40, during its forward movement has engaged the arm 59 to release its lug 58 from engagement with the aperture 35. Closing electric circuits for printing.-The slides 60 may be provided with spurs to close electrical contacts 69 during their sliding movement. Case-shift mechanism ; key sections.-Coded slots 61, 62 are associated with upper and lower case, respectively, and the probe members 50 are biased to probe the slots by leaf springs 15 which are displaced by link 16 under control of a cam 17 which is actuated by a case shift mechanism 12 on depression of a case-shift key 22. Key levers; repeat power action prevention; repeated power action.-The key levers 20 are provided with slots 23 at one end to mount them pivotally on a bracket 31 and with hooks 25 at the other end for engagement with a rod 33 to limit their upward movement. Repeat power action due to protracted key depression is prevented by limiting the downward movement of the key lever 20 by causing a lug 28 to abut a stationary frame 38 and providing the primary dobber 26 with a surface 27 which arrests the restoring movement of the link 40. Repeated power action by certain keys is possible by replacing the lug 28 by a spring 28 1 so that the key lever may be depressed to a greater extent and by providing the key lever 20 with a secondary dobber 29 which engages the upper edge 48 of restored link 40 and keeps it in a depressed position in which the probe member 50 is probing repeatedly its associated coded slot 61, 62. Key touch regulating arrangements.-Key touch is regulated by varying the width of key lever restoring leaf springs 80 which engage lugs 81 on the key levers 20, whereby entire keyboard control is effected by an operator touch control lever 82 articulated to a crank arm 83. Key switches.-Mis-operation of fast sequentially operated links 40 is prevented by a ball interlock mechanism 41 which permits only one link to be inserted at any one time. Release of the links 40 is effected early in the cycle by a bail 42 actuated by a cam 44 as so to permit the insertion of a second link thereinto. The bail 42 carries a number of leaf springs 43, one for each link, which engage the respective link and move it out of the ball interlock a restoring spring 46 urging the link 40 upwardly into its starting position. Variable impression arrangements.-Stack of slides 60 is associated with a further slide 76 coupled to a cable 75 which is attached to a slidable yoke to displace a roller 74, mounted in a cradle 71, into contact with one of a number of cams 73 which effect angular displacement of the cradle articulated to the spherical type head 72.

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