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公开(公告)号：DE1611463B1
公开(公告)日：1971-12-16
申请号：DE1611463
申请日：1968-03-15
Applicant: IBM
Inventor： HOLLAND CAUDILL ALLISON , JUN GOFF , EDWARD PALMER LEON
Abstract: 1,193,887. Ink-ribbon mechanism. INTERNATIONAL BUSINESS MACHINES CORP. 13 March, 1968 [15 March, 1967], No. 12155/68. Heading B6F. Varying successive throws of vibrator mechanism.-In a feed mechanism for single pass ink ribbons of the total release type, such as carbon, or of the plastic type, in which the ink ribbon is lifted to the printing position for each print operation, is advanced longitudinally in increments, and is lifted by varying amounts for each successive longitudinal advance, means are selectively operable to interrupt the operation of the ribbon feed so that the ribbon is advanced at intervals of a preselected number of print operations, and the amount of ribbon left for each successive print operation between those at which the ribbon is advanced is varied slightly to a combined extent, between ribbon advance operations, which is less than the extent of the variation of ribbon lift at each successive ribbon advance operation. In practice, said means is rendered inoperative for a carbon ribbon and operative for a plastic ribbon. The ribbon 20 is lifted by guides 62, 63, Fig. 4, connected to arms 64, 65 which are pivotable about a rod 67 by a cam follower 77 pivoted at 78 and co-operating with a cam 79 on the drive shaft 42, which is rotated once for each print operation. The cam follower 77 acts on the arm 64 through a pin 75 slidably received in a slot 76 of the cam follower 77, so that the position of the pin 75 in the slot 76 governs the extent to which the ribbon is lifted by the cam 79. The pin 75 is connected through a link 73 to a cam follower 71, Fig. 5, which co-operates with a cam surface on the periphery of a ratchet wheel 36 controlling the advance of the ribbon 20, to change the position of the pin 75 for each ribbon advance. The ribbon is advanced by a feed roller (27), Figs. 1, 6 (not shown), co-operating with a pressure roller (26), the feed roller being rotated by a pawl 46 which is reciprocated by a cam 43 on the shaft 42 acting on a follower 44 and which rotates the ratchet wheel 36 stepwise. The reciprocation of the pawl 46 may be prevented by a lever 51, Fig. 2, for a preselected number of print operations, the operation of both the ribbon advance and ribbon lift variation mechanisms being thereby interrupted. While the lever 51 prevents such reciprocation by engagement with a pin 54, the extent of ribbon lift is varied slightly by changing the pivot point of the arm 64 by means of an eccentric 106, Fig. 4. The eccentric is rotated for each print operation by a pawl (104), Fig. 3 (not shown), reciprocated by engagement with the cam 79 and effecting stepwise rotation of a ratchet wheel (105) formed integral with the eccentric. The lever 51 is held against the pin 54 by a spring 90 for a preselected number of print operations after which it is pivoted about a pin 52 by a cam 91 acting on a projection (93, Fig. 1) of the lever 51. The cam 91 is rotated by a fraction of the angle between the lobes 95 formed thereon by a pawl 96, Fig. 2, engaging a ratchet wheel 94 and reciprocated by engagement with the cam 79, Fig. 4. The lever 51 may also be removed from engagement with the pin 54 by a mode change lever 55 so that the ribbon is advanced and the lift varied for each print operation for use with carbon ribbons. The eccentric 106 is not rotated in this mode of operation. Tension arrangements.-Since plastic ribbons are less strong than carbon ribbons, the tension applied to the ribbon in the plastic ribbon mode of operation is made less than that applied in the carbon ribbon mode. A roller 111, Fig. 2, tensions the ribbon due to the action of a spring 116, which is less taut in the plastic ribbon mode as shown than in the carbon ribbon mode wherein a pin on the underside of the mode change lever 55 engages a shoulder 58, owing to a corresponding change in position of a lever 109 to which the spring 116 is connected. Stencilling arrangements.-A "stencil" lever (35, Fig. 1) stops rotation of the feed roller (27) by preventing reciprocation of the pawl 46 and also suppresses ribbon lift by disengaging the cam follower 71 from the ratchet wheel periphery, thus moving the pin 75 to a position whereby rotation of the cam follower 77 does not transmit motion to the arm 64. Ribbon loading arrangements.-A load/unload lever (131, Fig. 1) co-operates with a lug 135, Fig. 4, to lift the ribbon guides 62, 63 above the printing position, and also separates the pressure roller (26) from the feed roller (27) to facilitate loading and unloading ribbons. The ink ribbon feed mechanism may be mounted on a movable type carriage incorporating a spherical type head 14, Fig. 4, or may be fixed to a typewriter base, the platen then being movable.
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Patent Agency Ranking
公开(公告)号：DE1955825A1
公开(公告)日：1970-05-27
申请号：DE1955825
申请日：1969-11-06
Applicant: IBM
Inventor： ARTHUR HEIDT WILLIAM , EDWARD PALMER LEON , O'NEIL SCHAEFER JOHN
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公开(公告)号：DE1611444B1
公开(公告)日：1971-06-09
申请号：DE1611444
申请日：1967-07-20
Applicant: IBM
Inventor： EDWARD PALMER LEON
Abstract: 1,144,835. Typewriters. INTERNATIONAL BUSINESS MACHINES CORP. 5 July, 1967 [22 July, 1966], No. 30855/67. Heading B6F. Actions using auxiliary power.-A keyboardoperated printer has key levers 10 which operate a plurality of interposers 20, the selected depressed interposer being driven to the left, Fig. 1, by a half-revolution of a drive 56 to operate selection bails 60 and returnable to the right after each selection to enable a subsequent selection, but when a repeat action is required the interposer is held against full return so causing the selected bails to be maintained operative and the drive mechanism to operate repeatedly. Movement from the key to the interposer is via a pivoted dauber 18, the right-hand end of the interposer 20 is lowered .underneath a leaf spring 30 while a bail 40 is depressed to release a latch 40, 41 whereupon a lever 43 is urged to the left by a spring 47 and a clutch latch 62 on the right-hand end of the lever 43 releases a clutch sleeve member 50 and a drive belt 55 rotated by the clutch rotates the drive .shaft 56 which operates the now depressed interposer 20. In a single operation the interposer 20 returns rearwardly and upwardly by means of a spring 26 and comes to rest, as shown, against the spring 34 and clear of the drive shaft 56 which is stopped by the relatching of the clutch sleeve 50 by the latch 62. The latch is moved into engagement with one of the sleeve shoulders 51 by levers 65, 65 pivoted by the drive 56. Prevention of repeat operation.-The dauber 18 is pivoted counter-clockwise by the interposer 20 if the key is held down too long so as to prevent an unintended repeat operation. Repeat operation.-When a repeat operation is required a repeat key is depressed while the required character or other action key is held depressed. The character key may be released but repeated action occurs as long as the repeat key is held. The key lever 70, Fig. 70, has a resilient part 74 and engages and pivots an angular repeat bail 67, this moves into the return path of a stepped ear 76 having a latching surface 77. The clutch bail 40 is held depressed and the drive continues to operate Key-interlocks.-A crowded ball interlock device 30 co-operates with a raised hook 32 on the interposers 20 to prevent more than one action occurring at one time.
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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
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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公开(公告)号：DE1906830A1
公开(公告)日：1970-04-30
申请号：DE1906830
申请日：1969-02-12
Applicant: IBM
Inventor： EDWARD PALMER LEON
Abstract: 1,216,173. Typewriters. INTERNATIONAL BUSINESS MACHINES CORP. 23 Jan., 1969 [14 Feb., 1968], No. 3829/69. Heading B6F. A typewriter includes a key 65 which when depressed acts, on subsequent depression of a character key 41, to effect printing of the selected character without an associated letter space movement, followed by automatic printing of a predetermined character such as underscore and a subsequent letter space movement. The typewriter comprises a single element printing head 11 actuated on depression of a character key 41 by a mechanism (not shown) acted on by lugs 43a during leftward motion of an interposer 43 under the impulse of a filter shaft 51. The printing head 11 is advanced in the letter space direction by an excapement mechanism through a linkage 55, a lever 57 and a torque bar 59. On depression of the key 65, the key is latched in place by a slot 73 engaging a frame 71 owing to a spring 79, a pin 81 thereby acting to depress a bar 87 into a position such that a step 91 thereof is in the path of a blade 53 of the filter shaft 51. On depression of the character key 41, rotation of the filter shaft is initiated through a bail 45. The selected character is impressed, and simultaneously the bar 87 is driven leftward to rotate a ratchet-wheel 97 and coupled cam 109 so that a follower 113 is urged to the right and the escapement linkage is broken by displacement of the lever 57 away from engagement with the bar 59 by engagement of an end 125 of the cam follower 113 with a portion 127 of the lever 57. The rotation of the cam 109 also acts to draw a follower 129 downwardly, a portion 141 thereof depressing a underscore interposer 63. A second cycle of the filter shaft 51 is thereby initiated, causing impression of an underscore. Simultaneously, the bar 87 is again impelled to the left to rotate the ratchet-wheel 97 and cam 109 further. The follower 113 is thereby drawn to the left by a spring 121, to reconnect the lever 57 with the bar 59 and permit the operation of the letterspacing escapement mechanism. The follower 129 returns to its inoperative position with the underscore interposer 63. The key 65 remains latched in its operative position for continuous underscoring until manually released. A ball interlock 20 is provided to prevent actuation of a second key before a printing and underscoring cycle is completed.
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公开(公告)号：DE1283856B
公开(公告)日：1968-11-28
申请号：DEJ0019631
申请日：1961-03-21
Applicant: IBM
Inventor： EDWARD PALMER LEON
Abstract: 899,368. Typewriters &c. INTERNATIONAL BUSINESS MACHINES CORPORATION, Nov. 18, 1960 [March 28, 1960], No. 39684/60. Class 100(4) A key operated machine such as the single element printer shown has key buttons 5 on key levers 6 and associated interposers 7 which may be integral therewith. The key levers and interposers are clamped to a bar 1 and depression of a key causes the interposer to flex and its finger portion 9 to pass through an opening 12 into holes 16, 17 in control tapes 15. This downward movement of the interposer 7 causes a reduced portion 27 to move down an opening 31 in a plate 30 to become engaged behind a shoulder 35 to hold the interposer latched if the key is released. Later in a cycle of operations thus initiated a cam 75 on a power shaft 50 acts through linkage to move a knock-off bar 38 to the left to disengage the interposer 7 from the shoulder 35 to allow it to return to an inoperative position and to its initial position when the key is released. In the single element printer shown flexing of an interposer 7 rocks a bail 26 to close contacts 28 to initiate a single cycle of the power shaft 50 by engaging a clutch 53. In the cycle a cam 70 releases the tapes 15 so that those having long holes 17 engaged by the finger 9 move under the action of springs 20 while those having holes 16 engaged are held stationary. Movement of the tapes 15 acts through selecting links 90-94 selectively engaged by a bail 140 actuated by cams 72, 73, as described in Specification 873,920, to rotate and tilt the print head 44 to select the desired character which is imprinted when a cam 71 actuates a lever 152. The cam 70 then acts to restore the tapes 15 to their original position while release of the finger 9 allows the interposer to rise to return the bail 26 to open the contacts 28 to disengage the clutch 53.
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