US3171530A - Ribbon feed mechanism - Google Patents

Ribbon feed mechanism Download PDF

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Publication number
US3171530A
US3171530A US205392A US20539262A US3171530A US 3171530 A US3171530 A US 3171530A US 205392 A US205392 A US 205392A US 20539262 A US20539262 A US 20539262A US 3171530 A US3171530 A US 3171530A
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US
United States
Prior art keywords
ribbon
lever
cam
print
pawl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US205392A
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English (en)
Inventor
Jerome B O'daniel
Leon E Palmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL294440D priority Critical patent/NL294440A/xx
Priority to BE634144D priority patent/BE634144A/fr
Priority to NL137441D priority patent/NL137441C/xx
Priority to NL13744D priority patent/NL13744C/xx
Priority to US205392A priority patent/US3171530A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to AT483463A priority patent/AT260293B/de
Priority to CH749263A priority patent/CH411947A/de
Priority to FR938442A priority patent/FR1360654A/fr
Priority to DE19631436662 priority patent/DE1436662B2/de
Priority to SE6792/63A priority patent/SE306543B/xx
Priority to GB24955/63A priority patent/GB982774A/en
Application granted granted Critical
Publication of US3171530A publication Critical patent/US3171530A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/36—Ribbon-feed devices or mechanisms with means for adjusting feeding rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/40—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction
    • B41J33/44—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically
    • B41J33/51—Ribbon-feed devices or mechanisms with arrangements for reversing the feed direction automatically and characterised by the use of particular reversing control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/04—Ink-ribbon guides
    • B41J35/10—Vibrator mechanisms; Driving gear therefor
    • B41J35/12—Vibrator mechanisms; Driving gear therefor adjustable, e.g. for case shift
    • B41J35/14—Vibrator mechanisms; Driving gear therefor adjustable, e.g. for case shift for multicolour work; for ensuring maximum life of ink ribbon; for rendering ink-ribbon inoperative

Definitions

  • This invention is directed to ribbon feeding mechanisms for typewriters, and more particularly to mechanisms which are adjustable manually for causing different feeding operations depending on the kind of ribbon used.
  • a higher quality of print can be obtained from a plastic ribbon like that disclosed in a co-pending application, Serial Number 171,188, field February 5, 1962, by H. T. Findlay et al.
  • This ribbon has many small pockets in which ink is entrapped and a small portion of the ink is forced from these pockets on each typing operation. There is no passing of ink between the pockets by capillary action as there is in a cloth ribbon and so there is no need to wait for a recovery of the ribbon after a typing action.
  • A'number of high quality printed characters can be obtained when typing successively on the same area of the plastic ribbon.
  • the feed mechanism is designed to shift the ribbon transversely a slight amount after each character is typed.
  • the ribbon feeding mechanism of the present invention is provided with manually operated control elements which may be set by the operator for causing any one of the operations mentioned above.
  • An object of this invention is to provide an improved ribbon feeding mechanism for a typewriter.
  • Another object is to provide an improved ribbon feeding mechanism which can be adjusted by the operator to feed ribbon in different ways depending on the type of ribbon used.
  • Still another object is to provide a ribbon feeding mechanism which is operable to locate a ribbon in a plurality of different positions transversely of type elements during the typing of characters and then to advance it a short distance longitudinally where it is again shifted transversely of the type elements as characters are typed, such action continuing until the ribbon has been advanced its full length.
  • Yet another object is to provide a ribbon feed mechanism which operates to feed one type of ribbon longitudinally past typing elements with an automatic reversal in its direction of feed when either end of the ribbon is reached, and being adjustable to feed another type of ribbon longitudinally in steps after it has shifted the ribbon transversely in incremental steps for a predetermined number of typing operations, the mechanism operating with such adjustment to feed the ribbon in only one direction.
  • FIG. 1 is a plan View of the improved ribbon feeding mechanism.
  • FIG. 2 is a perspective view of a ribbon lift mechanism associated with the feeding mechanism and operable to lift the ribbon varying distances.
  • FIG. 3 is an enlarged vertical sectional view taken on the plane of the line 33 in FIG. 1.
  • FIG. 4 is a perspective view of means for supporting and driving spools on which ribbon is wound.
  • a pair of ratchet wheels 1 and 2 rotatably supported by a plate 3 and carrying spindles 4 on which ribbon spools may be mounted.
  • a pawl 5 is oscillated while engaging one or the other of the ratchet wheels to cause a driving of one spool so as to wind ribbon on that spool while it is being unwound from the other spool.
  • a member 6 is moved into the path of the pawl so it is driven rearwardly by the latter during the next oscillation.
  • an arm 7 on the member 6 is positioned in front of a transversely extending arm 8 on a toggle member 10.
  • the toggle member is rocked in a counterclockwise direction and acts through a spring 11 to swing the pawl 5 into engagement with the other ratchet Wheel.
  • a carrier 16 for a single print head like that shown in the patent.
  • the carrier slides along a shaft 17 and carries with it a sleeve 18 which is keyed for rotation with the shaft while sliding longitudinally thereof.
  • a cam 20 mounted on the sleeve is a cam 20 which is operable to drive a member 21 slidably mounted on a bracket 22 connected, as shown in FIG. 3, to the carrier 16.
  • One end of the member 21 is bent upwardly to provide a surface 23 which acts on the cam 20, and its other end is also bent upwardly to provide a surface 25 which acts on a member 26 pivotally supported by a pin 27 in a bracket 23 attached by means, not shown, to the plate 3.
  • the lower end of the pawl 5 is loosely mounted on the pin 27 and has a finger 29 acting on the member 26 so that a rocking of the latter in a counterclockwise direction causes the pawl to swing in the same direction against the action of a spring 30. It will be seen that this causes a driving of one or the other of the ratchet wheels 1 and 2.
  • the pawl 5 is driven ia distance to rotate one of the ratchetwheelstwo teeth.
  • This drive is employed-whens. fabric ribbon-is used in order to advance it'far en'ough V either direction;
  • inern ber 21 is driven: only farenough to actuate the-pawl f StEor rotating afratchet wheel one tooth. space, and this 7 v V 4 extending ribbon guide -.rr 1e mbers56, as shown; Thefian.
  • Control of e movement by the mentber 21 is accomplished bytwo latching pawl-s and36 pivotally mounted on the bracket 22' and engageable with the edge ofa -laterally projecting portion '37 on the 'rnerrrber 2-1-:'- Pawl 35 controls movement of member 21when a plastic rib: hon is being used and has ,;two spaced shoulders 'and 3-9. which may be located selectively in the path of the, project- .ing'porti0n-37. 'when'theshoulder'38engages theportion 37, the'rnem ber 21 is held in a position whichipermi ts its actuationhy the camonly far.
  • the shoulder 39 0a pawl 35 holds the fmern ber 21, as shown-in FIG. 3, to prevent a" feeding of the ribbon longitudinally.
  • the Team moves 'the member 21 'toi-dri've'"one of ⁇ the ratchet wheels one tooth and thenthe shoulder 39'h01ds the member 21 free of .the camjuntil the predetermined nunrberof print" operations has been completed again.
  • Pawl 36 has a single s houlder ii) which i s engageable'wi-th the portion 37 for holding the member 21 free of the; 20".”
  • This pawl isiactive vto"f 'ireventf iihbon fie'ed when themechanism is adjusted forcutting ste'ncilig
  • the ⁇ ; mechanisms ⁇ for eontrollingpawls 35 and 36 will be :de-' V a 1 e e 50 a shghtamount oneachprintoperation to locate theribhen in a'difierent transverse position.
  • a handle portion50 pefr'ini-ts manual'actwation of the member 47 for forcing the arm 46 against the finger 45 I to swing the outer'en-ds of theli-ft'arms 42 upwardly so 5 the ribbon israised to aposi'tion in which it may be easily changed.
  • a toggle spring 52 Connected between the flange'44 and a pin 51 on the me r nber 47 is a toggle spring 52 for holding the member 47 in either positiontowhioh it maybe moved.
  • A'stopj p in 53 limitsthe swinging of the member 47 in Extending parallel to the.
  • lift arms 42 is a pair of upper armsSS carrying, at one end; studs '55"which are pivotally supported in'thesicles of the carrier 16.
  • the outer-ends of the arms 42; 55 are pivotally connected to vertically rangement is. such that a swingingof the arms42'on the rod 43 results'in a movement of the guide members up or down in arvertical-pl-ane;
  • a control rod 61 is slidahly received WlllhlfliheiSlllfl to taota's a support for the arm 42.
  • Another'rneans is provided for swinging-the lever 64 V and having a finger 75 'engageable witha'pin 76 on the lever 64.
  • For-tr ed on the lever 74 is aiprojecting portion wheel 800d a stationary pivot 81.
  • the lever 74 may be swung either to its operative positionshownin FIG. 1 1n 'whichit'controls the .lifting of'the ribbon or to an in- Iprovidedinits right end aislot 83 sli-dably ⁇ receiving a pin 8.4 carried by amanu aliy actuated lever 85' whi-chswings j
  • the 'lever 74 is heldain by a. spring $6. j.
  • FIG. 1 Extending from the member 91 to a point overlying the ratchet wheel 80 is an arm 93 having an end portion 94 lying in the path of a stud 95 projecting from the side of the cam 78.
  • Driving of the ratchet wheel 80 is effected by a dog 96 engaging teeth on the wheel and connected to a lever 97 pivoted at 98 and having a follower portion 99 engaging the cam 21).
  • the ratchet wheel 80 is driven one tooth on each rotation of the shaft 17 and this takes place once for each print operation.
  • the cam 78 rotates and rocks the lever 74 slightly so its finger 75 either positively swings the lever 64 counterclockwise or permits this lever to swing clockwise under the action of the spring 62 on the control rod 61. In either case, the position of the ;control rod is shifted slightly so as to increase or decrease the lifting of the ribbon.
  • the cam 78 reaches a position in which the stud 95 engages the end portion 94 of the arm 93, the next stepping of the ratchet wheel results in a rocking of the member 91 to engage its hookshaped arm 90 with the tail portion 88 of the latching pawl 35.
  • the movement of the member 91 is just sulficient to raise the pawl until its shoulder 39 is out of the path of the projection 37 so the member 21moves toward the cam 26 until the projection engages the shoulder 38.
  • the next rotation of the cam 20 results in a driving of the member 21 so it rocks the feed pawl 5 to drive one of the ratchet wheels for the ribbon spools a distance of one tooth space.
  • the ratchet wheel 89 also turns and causes the stud 95 to slide off the end portion 94 of the arm 93.
  • Member 91 then rocks in a direction to release the tail portion of the pawl 35 and permit the latter to engage its shoulder 39 with the portion 37 for holding the member 21 free of the cam 26 until another rotation of the cam 78 is completed.
  • a member 101 mounted at one end on the pivot 69 and having a finger portion 102 extending past the left side of the handle'portion 70 on the lever 68.
  • the other end of the member 101 carries a button 103 which is slidably received in a slot 164 formed in a bar 195, and another slot 106 in the bar slidably receives a button 107 on a bracket 108 fixed to the carrier 16.
  • the bar 195 is provided with a hooked end 199 which receives an end portion
  • a spring 119 is connected between the bracket 198 and the bar 105 for holding the latter in the position shown.
  • the lever 85 When it is desired to use the mechanism for feeding a "fabric ribbon, the lever 85 is rotated manually in a clockwise direction from the position shown in FIG. 1. This results in a sliding of the pin 34 in the slot 83 to effect a swinging of the lever 74 in a clockwise direction.
  • the lever is rotated until the pin 84 engages the end of the bar and slides the latter to the left on the button 107.
  • This sliding motion of the bar is continued until the right end of the slot 164 engages the button 103 and swings the member 1111 clockwise until it engages a projecting portion 111 on the member 91, causing the latter to pivot clockwise until its hooked arm 99 rocks the latching pawl 35 completely out of the path of the projection on the member 21.
  • the feed pawl S is in a position to drive the ratchet wheel 2 for feeding the ribbon from left to right.
  • a projecting portion 112 which is engageable with an arm 114 (FIG. 4) of the toggle member 10.
  • the finger 112 acts on the arm 114 to swing the toggle member 19 to a position in which .it pulls the pawl 5 into engagement with the wheel 2.
  • the mechanism described should be prevented from either lifting the ribbon or feeding it longitudinally.
  • the lever 68 is free for rotation manually to shift the pin 71 along the inner arcuate surface of the lever 64.
  • the rod 61 With the lever 68 swung to its extreme left hand position, the rod 61 is held at a point in the slot 66 to give maximum lift of the ribbon for effecting typing on the low part of the ribbon.
  • the lever 68 is swung counterclockwise, the rod 61 moves in the slot 69 toward the pivoted end of the member 57 and reduces the lift of the ribbon.
  • a cam portion 116 Formed on the lever 68 adjacent its pivoted end is a cam portion 116 which acts against a tail piece 117 on the latching pawl 36, as shown more clearly in FIG. 3, for holding the pawl out of engagement with the projec 2' V r g 7 tion 37 on the member 21.
  • the cam'p ortion' 116 movesaway from the tail piece 117 and permits the pawl "36-to drop, tof'its operative position.
  • the shoulder on the pawl 36 drops-in back' of the projection 37 and holds the member-21. from following the cam. During this-time, no feeding of thet-ribbon take's Y place.
  • a mechanism'for moving I versely and longitudinally relative to a point "of contact a between a print element and a platen comprising, infcor'n t be modified and embodied in variousforms without fdean inked ribbon transbination:
  • y ,1 1 means supporting said'guiding meansfor movement in a direction extending transversely of said ribbon to locatethetlatter in different ver-ticalpositionSrelative to said point of contact, I V a member movable to, diifer'ent positions relative to Q said supporting means and acting on the latter for]: transmittingmotion thereto, saidgmember adapted tobe driven in each of its different positions for trans- .1
  • the mechanism of claim 1 in Whichsaid means for ⁇ 5 shifting sai member includes: a I a ratchet wheel, t a 1 I 7, means operating on each p 'nting action 'foradvancing said ratchet wheel; I I i t a' cam fixed to said ratchet, wheeltor rotationtherewith, I 1i and a lever arranged for actuation bysaid cam and operatively connected to said memberffor shifting thelatter. 7 i T V 3; A mechanismforfmoving an inked ribbon selective- Ily ,either "different distances transversely relative, to a point of m q b tween a print element and a platen on;
  • steps oneach print action a first lever adapted to be actuated by said control cam for-moving said member to ditferent positions, a' second lever"adapted -to be actuated for releasing saidlatchfrom said'oscillated element, 7
  • a first lever adapted to be actuated by said control cam for moving said member to different positions
  • a manually actuated lever which is operable to move said member to any one of different positions when said first lever is moved to a position free of said control cam and said second lever is moved to a position holding said latch released.
  • a mechanism for feeding an inked ribbon relative to a point of contact between a print element and a platen comprising, in combination:
  • said means for moving said member to a different one of said different positions and said means for advancing said ribbon comprising a ratchet wheel
  • means including a lever actuated by said cam and operatively connected to said member for moving the latter,
  • a mechanism for feeding an inked ribbon relative to a point of contact between a print element and a platen wherein the ribbon is of the type which is fed longitudinally once past said point of contact and discarded comprising, in combination:
  • a mechanism for feeding an inked ribbon relative to a point of contact between a print element and a platen wherein the ribbon is of the type which is fed longitudinally once past said point of contact and discarded comprising, in combination:
  • means including a cyclically operable print shaft for effecting relative movement between said print element and said platen to cause printing of characters;
  • a mechanism for feeding an inked ribbon relative to a point of contact between a print element and a platen wherein the ribbon is of the type which is fed longitudinally once past said point of contact and discarded comprising, in combination:
  • means including a cyclically operable print shaft for effecting relative movement between said print element and said platen to cause printing of characters;
  • said cannmeans being associated tudinally; t 7 '13.
  • a mechanismifor feedingan inked ,ribbonrelative toa point-ofcontactobetween a print element anda platen wherein the ribbon. is of the type Which'is fed jlo-ngitw. I dinallyonce: past: said: point on contact and discarded comprising, in combination: 7 p means including a; cyclically operable-print" sbaft'for effectingrelative;movement, between said print e1e' mentiandzsaidzplaten-to causeprintingoftcharacters, guiding means for said ribbon, f
  • cam:follower means is moved to said ineffective camfollowing position to position said member. actingjon said guiding means'in avpredeter-i omined 'position andto' prevent; operation of: said means for advancing'said-ribbon.

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  • Impression-Transfer Materials And Handling Thereof (AREA)
US205392A 1962-06-26 1962-06-26 Ribbon feed mechanism Expired - Lifetime US3171530A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
NL294440D NL294440A (de) 1962-06-26
BE634144D BE634144A (de) 1962-06-26
NL137441D NL137441C (de) 1962-06-26
NL13744D NL13744C (de) 1962-06-26
US205392A US3171530A (en) 1962-06-26 1962-06-26 Ribbon feed mechanism
CH749263A CH411947A (de) 1962-06-26 1963-06-17 Verfahren und Vorrichtung für den Farbband-Transport
AT483463A AT260293B (de) 1962-06-26 1963-06-17 Verfahren und Vorrichtung zur besseren Ausnutzung eines einmal durch die Maschine, z.B. Schreibmaschine laufenden Farbbandes aus Kunststoff
FR938442A FR1360654A (fr) 1962-06-26 1963-06-18 Mécanisme d'alimentation de ruban
DE19631436662 DE1436662B2 (de) 1962-06-26 1963-06-19 Vorrichtung für den Farbband-Transport
SE6792/63A SE306543B (de) 1962-06-26 1963-06-19
GB24955/63A GB982774A (en) 1962-06-26 1963-06-24 Ribbon feed mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US205392A US3171530A (en) 1962-06-26 1962-06-26 Ribbon feed mechanism

Publications (1)

Publication Number Publication Date
US3171530A true US3171530A (en) 1965-03-02

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ID=22762004

Family Applications (1)

Application Number Title Priority Date Filing Date
US205392A Expired - Lifetime US3171530A (en) 1962-06-26 1962-06-26 Ribbon feed mechanism

Country Status (5)

Country Link
US (1) US3171530A (de)
AT (1) AT260293B (de)
CH (1) CH411947A (de)
GB (1) GB982774A (de)
SE (1) SE306543B (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302766A (en) * 1962-09-12 1967-02-07 Royal Typewriter Co Inc Ribbon handling mechanism
US3346090A (en) * 1963-05-31 1967-10-10 Ibm Ribbon feed mechanism
US3442366A (en) * 1966-03-18 1969-05-06 Ibm Ribbon tension control
US3481446A (en) * 1966-10-11 1969-12-02 Telefunken Patent Ribbon feeding arrangement for n-digit code imprints
US3528536A (en) * 1967-03-15 1970-09-15 Ibm Ribbon feed mechanism for a single pass ribbon
US3598220A (en) * 1969-03-19 1971-08-10 Litton Business Systems Inc Ribbon-lifting mechanism for a typewriter
US3604549A (en) * 1968-07-16 1971-09-14 Ibm Dual feed rate ribbon mechanism and supply cartridge therefor
US3741364A (en) * 1971-01-08 1973-06-26 Datel Corp Ribbon shift assembly
US3782521A (en) * 1971-07-29 1974-01-01 Triumph Werke Nuernberg Ag Ribbon lifting mechanism for a power-driven typewriter
US3811547A (en) * 1972-08-31 1974-05-21 Ibm Cyclically rotatable eccentric pivot for ribbon reverse lever
US3835770A (en) * 1970-02-27 1974-09-17 Suwa Seikosha Kk Compact flying printer
US3904016A (en) * 1972-08-09 1975-09-09 Triumph Werke Nuernberg Ag Typewriter ribbon arrangement having interchangeable ribbon loadable cartridges with attached movable ribbon lifters
USRE28796E (en) * 1970-02-27 1976-05-04 Kabushiki Kaisha Suwa Seikosha Compact flying printer
US4022313A (en) * 1975-11-19 1977-05-10 Redactron Corporation Ribbon lifting mechanism
US4132486A (en) * 1977-01-05 1979-01-02 Bunker Ramo Corporation Ribbon platform mechanism for extending ribbon life
US4167345A (en) * 1976-08-11 1979-09-11 Svenska Kassaregister Ab Printing apparatus with selectively movable printing heads
US4302118A (en) * 1977-05-27 1981-11-24 International Business Machines Corporation Typewriter cartridge and feed mechanism therefor
US4347007A (en) * 1977-05-27 1982-08-31 International Business Machines Corporation Typewriter cartridge and feed mechanism therefor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US677111A (en) * 1894-04-26 1901-06-25 Union Type Writer Company Ribbon-feed mechanism for type-writers.
US990406A (en) * 1910-02-03 1911-04-25 Union Typewriter Co Type-writing machine.
US1929448A (en) * 1931-10-23 1933-10-10 Coxhead Ralph C Corp Ribbon vibrating and ribbon shifting mechanism
US2840218A (en) * 1954-12-13 1958-06-24 Ida S Pelton Typing apparatus and supplies for typists to enable them to secure finer writing results at less cost
US2902136A (en) * 1957-12-20 1959-09-01 Ibm Ribbon mechanism
US2919008A (en) * 1957-12-27 1959-12-29 Ibm Ribbon lift mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US677111A (en) * 1894-04-26 1901-06-25 Union Type Writer Company Ribbon-feed mechanism for type-writers.
US990406A (en) * 1910-02-03 1911-04-25 Union Typewriter Co Type-writing machine.
US1929448A (en) * 1931-10-23 1933-10-10 Coxhead Ralph C Corp Ribbon vibrating and ribbon shifting mechanism
US2840218A (en) * 1954-12-13 1958-06-24 Ida S Pelton Typing apparatus and supplies for typists to enable them to secure finer writing results at less cost
US2902136A (en) * 1957-12-20 1959-09-01 Ibm Ribbon mechanism
US2919008A (en) * 1957-12-27 1959-12-29 Ibm Ribbon lift mechanism

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302766A (en) * 1962-09-12 1967-02-07 Royal Typewriter Co Inc Ribbon handling mechanism
US3346090A (en) * 1963-05-31 1967-10-10 Ibm Ribbon feed mechanism
US3442366A (en) * 1966-03-18 1969-05-06 Ibm Ribbon tension control
US3481446A (en) * 1966-10-11 1969-12-02 Telefunken Patent Ribbon feeding arrangement for n-digit code imprints
US3528536A (en) * 1967-03-15 1970-09-15 Ibm Ribbon feed mechanism for a single pass ribbon
US3604549A (en) * 1968-07-16 1971-09-14 Ibm Dual feed rate ribbon mechanism and supply cartridge therefor
US3598220A (en) * 1969-03-19 1971-08-10 Litton Business Systems Inc Ribbon-lifting mechanism for a typewriter
USRE28796E (en) * 1970-02-27 1976-05-04 Kabushiki Kaisha Suwa Seikosha Compact flying printer
US3835770A (en) * 1970-02-27 1974-09-17 Suwa Seikosha Kk Compact flying printer
US3741364A (en) * 1971-01-08 1973-06-26 Datel Corp Ribbon shift assembly
US3782521A (en) * 1971-07-29 1974-01-01 Triumph Werke Nuernberg Ag Ribbon lifting mechanism for a power-driven typewriter
US3904016A (en) * 1972-08-09 1975-09-09 Triumph Werke Nuernberg Ag Typewriter ribbon arrangement having interchangeable ribbon loadable cartridges with attached movable ribbon lifters
US3811547A (en) * 1972-08-31 1974-05-21 Ibm Cyclically rotatable eccentric pivot for ribbon reverse lever
US4022313A (en) * 1975-11-19 1977-05-10 Redactron Corporation Ribbon lifting mechanism
US4167345A (en) * 1976-08-11 1979-09-11 Svenska Kassaregister Ab Printing apparatus with selectively movable printing heads
US4132486A (en) * 1977-01-05 1979-01-02 Bunker Ramo Corporation Ribbon platform mechanism for extending ribbon life
US4302118A (en) * 1977-05-27 1981-11-24 International Business Machines Corporation Typewriter cartridge and feed mechanism therefor
US4347007A (en) * 1977-05-27 1982-08-31 International Business Machines Corporation Typewriter cartridge and feed mechanism therefor

Also Published As

Publication number Publication date
AT260293B (de) 1968-02-26
GB982774A (en) 1965-02-10
SE306543B (de) 1968-12-02
CH411947A (de) 1966-04-30

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