US3923141A - Dual feed rate ribbon mounting and transport assembly - Google Patents

Dual feed rate ribbon mounting and transport assembly Download PDF

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Publication number
US3923141A
US3923141A US484621A US48462174A US3923141A US 3923141 A US3923141 A US 3923141A US 484621 A US484621 A US 484621A US 48462174 A US48462174 A US 48462174A US 3923141 A US3923141 A US 3923141A
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US
United States
Prior art keywords
ribbon
spool
assembly
spring
take
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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
US484621A
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English (en)
Inventor
Hans-Georg Hengelhaupt
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TA Triumph Adler GmbH
Original Assignee
Triumph Werke Nuernberg AG
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Publication date
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Application granted granted Critical
Publication of US3923141A publication Critical patent/US3923141A/en
Assigned to TRIUMPH-ADLER AKTIENGESELLSLCHAFT FUR BURO-UND INFORMATIONSTECHNIK reassignment TRIUMPH-ADLER AKTIENGESELLSLCHAFT FUR BURO-UND INFORMATIONSTECHNIK CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE 8/13/80 Assignors: TRIUMPH WERKE NURNBERG AKTIENGESELLSCHAFT
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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/28—Detachable carriers or holders for ink-ribbon mechanisms
    • 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

Definitions

  • An assembly for accommodating either carbon or solvent film ribbons includes mechanism couplable to a driver in a machine which is effective to elevate and feed ribbon mounted therein.
  • the mechanism incrementally feeds carbon ribbon at a first constant rate or solvent ribbon at a second constant rate and includes a transport roller for driving the periphery of a flange on a ribbon take-up spool and means for decreasing the angle of rotation of the transport roller as the diameter of wound ribbon on the take-up spool increases to provide a constant feed increment.
  • a feature of the invention resides in the ability to exchange one assembly for another including assembly decoupling means, which serves to prevent unwinding of ribbbon from a supply spool and to maintain ribbon tension so that the assembly may be remounted again to use remaining unused ribbon.
  • the invention relates to ribbon mounting and transport assemblies for carbon or solvent ribbons; more particularly, it relates to assemblies which can be exchangeably mounted according to the type of ribbon required and which are couplable to ribbon elevating and drive means in power-driven typewriters and similar machines; and specifically, to assemblies which include means to transport ribbon in constant predetermined feed increments.
  • the basic position of a clutch spring adapted to couple the motion of a driver to a transport roller, is changed relative to the driver thereby varying the angle of rotation of the transport roller according to the respective diameter of the coil of ribbon wound on a take-up spool as determined by a sensing device which is coupled to a control lever.
  • the end of the lever is guided by a first cam surface provided in the support plate of the ribbon mechanism, and acts upon a clutch spring positioning lever mounted on the transport roller shaft to thereby set the position of the clutch spring relative to the driver, thus determining the onset of rotation of the transport roller for every forward stroke of the driver.
  • the assembly mounts a solvent ribbon, and to achieve maxium utilization of the solvent film ribbon by overlapping the impressions on the ribbon, there is provided on the base plate a manually pivotable, multi armed lever guided by a fixed pin and capable of snapping from one to another detent notch provided in the base plate which acts to rock the control lever, and to establish a second cam or guide surface to control the path of motion of the control lever and, hence, the clutch spring positioning lever thereby determining the onset of rotation of the transport roller so that the impressions overlap on the ribbon in horizontal direction.
  • decoupling means serve to apply a brake to the supply spool and to hold the ribbon between supply and take-up spools under proper tension so that when the assembly is again required the ribbon is properly positioned for mounting.
  • the feed increment of the transport can be manually shifted to make it adaptable to a required feed increment according to the respective ribbon to be used.
  • Another object of the invention is to provide a ribbon transport assembly which can accomodate either carbon film or solvent film ribbons which may be exchangeably mounted on a power-driven typewriter to allow use of different ribbons.
  • Another object of the invention is to provide exchangeably mountable ribbon transport assemblies including transport means which maintains ribbon feed increments constant at a feed rate required for solvent or carbon film ribbons.
  • Still another object of the invention is in the provision of a transport roller in a ribbon transport assembly, which includes spooled ribbons, whose angle of drive is decreased in proportion to the coil diameter of used ribbon.
  • a further object of the invention is in the provision of a ribbon transport assembly, which mounts spooled ribbons, that can be removed for replacement yet holds the ribbon against unravelling and under proper tension ready for remounting.
  • FIG. 1 is a section (with parts not shown) of a ribbon transport assembly, including ribbon spools, operatively mounted in a machine and showing details of the transport roller clutch springs.
  • FIG. 2 is a view of a ribbon transport assembly carrying spooled carbon film ribbon looking from the top of FIG. 1;
  • FIG. 3 is a view, similar to FIG. 2, showing a larger quantity of used carbon ribbon on the take-up spool;
  • FIG. 4 is a view, similar to FIG. 2, showing the ribbon transport assembly carrying spooled solvent film ribbon and set to incrementally feed same.
  • ribbon spools Referring now to the drawing and with particular reference to FIG. 1, there is shown a ribbon transport assembly generally designated by reference numeral 11 wherein, as shown in FIG. 2, supply and take-up ribbon spools generally designated respectively by reference numerals 12 and 13 carrying either carbon or solvent film ribbon 14C or 148 are mounted.
  • the spools l2, 13 on which the carbon or solvent film ribbons 14 are .wound comprise a hollow core 15 and a single flange 16, which are mounted as will hereinafter appear in the ribbon transport assembly.
  • a drive pin 21 associated with a part in the machine which oscillates incident to each print action enters between a fork 22 formed on a depending arm of a ribbon vibrator, generally designated by reference numeral 23.
  • the vibrator 23 has forwardly extending spaced arms 24, 25, the ends of which are formed with ribbon guide channels 26, 27 which, with the arms 24, 25 and ribbon 14, embrace the type head 18.
  • the drive pin 21 and vibrator 23 may be variably driven successively through different cyclically repeating angular increments by conventional means to present, for example, three different horizontal levels of a ribbon for printing.
  • the vibrator 23 is pivotally mounted as at 28 on a bracket 31 formed on an assembly support plate 32.
  • An arm 33 on the vibrator 23 extends above the pivot 28 and is coupled as at 34 to a rearwardly extending driver 35 having an extension 36 which extends through an opening 37 in the support plate and is guided by a slot 38 in a bracket 39 on the support plate.
  • FIG. 2 there is shown the assembly 11 mounting a carbon ribbon supply 12 and take-up spools 13.
  • the supply spool core has a larger diameter than the take-up spool core.
  • These spools are mounted, flanged side up, while the assembly 11 is inverted prior to mounting the assembly 11 to the operational position shown in FIG. 1 on corresponding support cores 41 rotatably mounted on pins 42 extending from the support plate 32.
  • Corresponding detent formations (not shown) on the spool and support cores are provided so that spool and support cores rotate as one.
  • the carbon ribbon 14C intended for one passage only, is led from the supply spool 12, equipped with a brake in the form of a spring 43 wrapped around a reduced portion of support core 41 across a deflector 44- aud the two guides 26, 27 of the ribbon vibrator arms 24, and another deflector 45 to the take-up spool 13 mounted on a support core 41.
  • the drive train for incrementally feeding the ribbon 14 comprises the vibrator 23 and the driver 35 mounted to the vibrator.
  • the driver 35 acts upon a leg 46 of a one-way clutch spring 47 surrounding a bushing 48 integraliy formed with a transport roller 51 which is freely rotatable on a support pin 52 fastened in the base plate 32.
  • the clutch spring 47 designed in the form of a coil (FIG. 1) is mounted on the bushing 48 together with a wound one-way clutch spring 53.
  • the spring leg 46 moved by the driver 35, bears against the inner side of the bent down end of shorter arm 54 of a dual-armed clutch spring positioning lever 55 which is rotatably mounted on pin 52 and establishes the starting position of leg 46 of the clutch spring 47 relative to the end of the driver 35; thereafter, the angle of rotation of transport roller 51 is determined as a function or" the instantaneous magnitude of the outside diameter of the coil 57 of ribbon 14C wound up on the take-up core spool 15.
  • the rotary motions of the transport roller 51 are transmitted to the peripheral rim of the take-up spool flange 16 by means of an intermediate roller 58 mounted on arm 49 of a dual-armed lever 61 also pivotally mounted on pin 52.
  • the freely turning return lock spring 53 wound over the bushing 48 prevents the transport roller 51 from reversing during the return stroke of lever 55, and its free leg 62 is hooked into a notch 63 of a shifting rod 64 in which the leg 62 is retained without backlash by the spring wire 65.
  • the shifting rod 64 is pivotably mounted, as at 66, to a locking lever 67 which, in turn, is pivotably mounted on the base plate 32, as at 68; its inward end carrying a spring 71 which embraces the ends of and influences the brake spring 43 when the locking lever 67 is rotated to release its rightwardly extending end 69 from a groove in locking pin 19 to permit withdrawal and removal of the assembly 11.
  • a single-armed return lever 72 which is loaded by the helical extension spring 73 hooked into the locking lever 67 and which, through a downwardly bent end 74, traps the ends 46 of the clutch spring 47 between itself and the bent down end of short arm 54 of the'lever 55 to effect the return of the clutch spring 47 to its starting position after every completed forward stroke of the driver 35.
  • a sensing device is provided to control the angle of rotation of the transport roller 51 and, hence, of the take-up spool 13 as a function of the outside diameter of the coil 57 of ribbon 14C wound on this spool 13.
  • the sensing device comprises a sensing arm 75 which is spring loaded by a helical extension spring 76 and is mounted on the pin 77.
  • the arm 75 supports at its free end a sensor pin 78 sliding over the ribbon coil 57.
  • a control lever 79, linked to this sensing arm 75 at 81 is carried along by the latter, and a slider pin 82, guided along a curved path in the form of a cam surface 83 machined into the base plate 32, is attached to the rounded enlarged free end 84 of the control lever 79.
  • the pin 82 glides along the longer arm 85 of the lever 55, thereby turning the latter and also the clutch spring 47 counterclockwise.
  • the driving motion goes from the ribbon vibrator 23 to the driver 35 which pushes the bent leg 46 of the clutch spring 47 with every forward stroke of the vibrator 23; in turn, moving the transport roller 51 by a corresponding angular amount which is determined by the size of the outside diameter of the ribbon coil 57 wound up on the take-up spool 13.
  • the sensing arm 75 senses the radius to the periphery of the ribbon coil 57 on the takeup spool 13.
  • the angleof rotation of the transport roller 51, and with it also the angle of rotation of the take-up spool 13, is decreased in this manner so that for every stroke the length of ribbon transported is the same regardless of the'outside diameter of the ribbon coil.
  • the intermediate roller 58 is manually swung away from the rim of the takeup spool flange 16 by means of a tab 60 on lever 61.
  • the sensing arm 75 including the control lever 79, jumps inward into its starting position under the force of the extension spring 76.
  • the round portion 86 of the sensing arm 75 then rests against the support core 41.
  • the pin 78 which is spaced from portion 86 by the width of the take-up spool core 15, is, therefore, out of reach of the spool core so that the empty spool 13 can be put in place unhindered.
  • the return lever 72 returns the clutch spring 47 and the lever 55 into their starting positions.
  • the lock lever 67 which is spring loaded by extension spring 87, is swung counterclockwise.
  • the shifting rod 64 is taken along also which turns the transport roller 51 in feed direction by a small amount through the return clutch spring 53 hooked into it.
  • the return clutch spring acts as a feed spring and the clutch spring 47 as a locking spring, and the rotation of the transport roller 51 moves the last impression on the ribbon away from the point of impression to avoid overlaps of the new and the old impressions when the carbon ribbon assembly 11 is replaced.
  • the brake spring 43 ends are drawn together and tightened to brake the feed spool 12 in its last phase of motion against unintentional turning to avoid slackening of the ribbon. This tightens the ribbon at the same time.
  • a three-armed positioning lever 91 is provided for this purpose mounted on the support plate 32 and influencing the control lever 79. The rest position and the operating position of this lever 91, as shown in FIG.
  • the angle of rotation of transport roller 51 is thereby so decreased that the points of impression on the ribbon will overlap.
  • the transport step amounts to about one-fifth of normal.
  • the transport roller 51, the intermediate roller 58 and the rim of the take-up spool 13 may be knurled or serrated, or a combination of rubberized friction rollers may be used in their manufacture.
  • the application of the object of the invention is not restricted to ribbon mechanisms where the ribbon is typed on in three horizontal lines, but is also suited for mechanisms with ribbons to be typed on in a single line only.
  • a ribbon support and ribbon feed assembly comprising a support plate
  • a rotatable transport roller responsive to the movement of said vibrator means for incrementally rotating said take-up spool
  • said means coupled to said sensing means comprising a link having a follower pin
  • said pin acting on said means for initially positioning said spring end to increase the distance between said spring end and said vibrator means in response to the sensing of an increased diameter of wound ribbon on said take-up spool by said sensing means.
  • An assembly as recited in claim 2 further comprising lever means to removably lock said assembly on a machine part, a drag spring normally loosely mounted around the supply spool, said lever means having a connection to said drag spring and to said second clutch spring whereby when moved to release said assembly it 6.

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  • Impression-Transfer Materials And Handling Thereof (AREA)
US484621A 1973-07-21 1974-07-01 Dual feed rate ribbon mounting and transport assembly Expired - Lifetime US3923141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2337191A DE2337191C3 (de) 1973-07-21 1973-07-21 Transportvorrichtung für Karbonoder Plastikfarbbänder für kraftangetriebene Schreib- und ähnliche Maschinen

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US3923141A true US3923141A (en) 1975-12-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
US484621A Expired - Lifetime US3923141A (en) 1973-07-21 1974-07-01 Dual feed rate ribbon mounting and transport assembly

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US (1) US3923141A (OSRAM)
JP (1) JPS5413804B2 (OSRAM)
DE (1) DE2337191C3 (OSRAM)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074799A (en) * 1975-07-17 1978-02-21 Brother Kogyo Kabushiki Kaisha Ribbon cartridge having slack preventing means
FR2391853A1 (fr) * 1977-05-27 1978-12-22 Ibm Cartouche a ruban pour machine a ecrire et son mecanisme d'entrainement
US4168127A (en) * 1976-10-21 1979-09-18 Triumph Werke Nurnberg A.G. Constant rate ribbon winding mechanism
US4372697A (en) * 1981-06-22 1983-02-08 International Business Machines Corporation Ribbon drive arrangement for a printer
US4402621A (en) * 1981-09-25 1983-09-06 International Business Machines Corp. Ribbon cartridge with ribbon guide arms
US4440514A (en) * 1980-02-02 1984-04-03 Olympia Werke Ag Adjustable ribbon feed rates dependent upon ribbon type for ink ribbon cassettes
US4456193A (en) * 1981-09-16 1984-06-26 Bell & Howell Company Web advancement sensing methods and apparatus
US4475829A (en) * 1981-04-30 1984-10-09 International Business Machines Corporation Capacitive metering means for uniform ribbon feed and take-up mechanism
US4615628A (en) * 1985-04-02 1986-10-07 Shape Inc. Ribbon cartridge with self-contained ratchet and drive gear assembly
US4886383A (en) * 1988-02-29 1989-12-12 Smith Corona Corporation Tape cassette for metering correction tape feed
USD308070S (en) 1987-11-30 1990-05-22 Smith Corona Corporation Ribbon cassette
USD310384S (en) 1988-04-19 1990-09-04 Smith Coronoa Corporation Ribbon cassette
US5083877A (en) * 1990-04-18 1992-01-28 Pelikan, Inc. Tape feed control apparatus for a correction tape cassette for a typewriter
US5267803A (en) * 1987-11-30 1993-12-07 Smith Corona Corporation Cassette having compatibility arrangement
WO2001003940A1 (fr) * 1999-07-13 2001-01-18 Dassault Automatismes Et Telecommunications Cassette a ruban consommable, notamment pour dispositif de traitement de titres de transport

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017753B1 (de) * 1979-04-20 1984-06-20 Ascom Autelca Ag Farbbandtransport- und -umschaltvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283876A (en) * 1962-05-14 1966-11-08 Siemens Ag Endless ink ribbon arrangement for typewriters
US3348650A (en) * 1961-08-12 1967-10-24 Mecanographie Japy Soc D Ribbon feed mechanism for typewriters, computers, and similar machines
US3349887A (en) * 1964-12-28 1967-10-31 Ibm Ribbon mechanism
US3643777A (en) * 1970-07-23 1972-02-22 Scm Corp Typewriter ribbon cartridge
US3677486A (en) * 1970-05-01 1972-07-18 Burroughs Corp Uniform ribbon feed apparatus
US3704836A (en) * 1970-04-08 1972-12-05 Ricoh Kk Automatic cartridge tape threading device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348650A (en) * 1961-08-12 1967-10-24 Mecanographie Japy Soc D Ribbon feed mechanism for typewriters, computers, and similar machines
US3283876A (en) * 1962-05-14 1966-11-08 Siemens Ag Endless ink ribbon arrangement for typewriters
US3349887A (en) * 1964-12-28 1967-10-31 Ibm Ribbon mechanism
US3704836A (en) * 1970-04-08 1972-12-05 Ricoh Kk Automatic cartridge tape threading device
US3677486A (en) * 1970-05-01 1972-07-18 Burroughs Corp Uniform ribbon feed apparatus
US3643777A (en) * 1970-07-23 1972-02-22 Scm Corp Typewriter ribbon cartridge

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074799A (en) * 1975-07-17 1978-02-21 Brother Kogyo Kabushiki Kaisha Ribbon cartridge having slack preventing means
US4168127A (en) * 1976-10-21 1979-09-18 Triumph Werke Nurnberg A.G. Constant rate ribbon winding mechanism
FR2391853A1 (fr) * 1977-05-27 1978-12-22 Ibm Cartouche a ruban pour machine a ecrire et son mecanisme d'entrainement
US4440514A (en) * 1980-02-02 1984-04-03 Olympia Werke Ag Adjustable ribbon feed rates dependent upon ribbon type for ink ribbon cassettes
US4475829A (en) * 1981-04-30 1984-10-09 International Business Machines Corporation Capacitive metering means for uniform ribbon feed and take-up mechanism
US4372697A (en) * 1981-06-22 1983-02-08 International Business Machines Corporation Ribbon drive arrangement for a printer
US4456193A (en) * 1981-09-16 1984-06-26 Bell & Howell Company Web advancement sensing methods and apparatus
US4402621A (en) * 1981-09-25 1983-09-06 International Business Machines Corp. Ribbon cartridge with ribbon guide arms
EP0075665A3 (en) * 1981-09-25 1984-06-06 International Business Machines Corporation Ribbon cartridge with integral pivoted ribbon guide
US4615628A (en) * 1985-04-02 1986-10-07 Shape Inc. Ribbon cartridge with self-contained ratchet and drive gear assembly
USD308070S (en) 1987-11-30 1990-05-22 Smith Corona Corporation Ribbon cassette
US5267803A (en) * 1987-11-30 1993-12-07 Smith Corona Corporation Cassette having compatibility arrangement
US4886383A (en) * 1988-02-29 1989-12-12 Smith Corona Corporation Tape cassette for metering correction tape feed
USD310384S (en) 1988-04-19 1990-09-04 Smith Coronoa Corporation Ribbon cassette
US5083877A (en) * 1990-04-18 1992-01-28 Pelikan, Inc. Tape feed control apparatus for a correction tape cassette for a typewriter
WO2001003940A1 (fr) * 1999-07-13 2001-01-18 Dassault Automatismes Et Telecommunications Cassette a ruban consommable, notamment pour dispositif de traitement de titres de transport
FR2796372A1 (fr) * 1999-07-13 2001-01-19 Dassault Automatismes Cassette a ruban consommable, notamment pour dispositif de traitement de titres de transport
US6511238B1 (en) 1999-07-13 2003-01-28 Dassault Automatismes Et Telecommunications Cassette with consumable tape, in particular for transport ticket processing device

Also Published As

Publication number Publication date
DE2337191C3 (de) 1978-11-09
JPS5049016A (OSRAM) 1975-05-01
DE2337191A1 (de) 1975-02-06
DE2337191B2 (de) 1978-03-23
JPS5413804B2 (OSRAM) 1979-06-02

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AS Assignment

Owner name: TRIUMPH-ADLER AKTIENGESELLSLCHAFT FUR BURO-UND INF

Free format text: CHANGE OF NAME;ASSIGNOR:TRIUMPH WERKE NURNBERG AKTIENGESELLSCHAFT;REEL/FRAME:003935/0913

Effective date: 19800813