US3154185A - Typewriter ribbon control arrangement - Google Patents

Typewriter ribbon control arrangement Download PDF

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Publication number
US3154185A
US3154185A US160963A US16096361A US3154185A US 3154185 A US3154185 A US 3154185A US 160963 A US160963 A US 160963A US 16096361 A US16096361 A US 16096361A US 3154185 A US3154185 A US 3154185A
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Prior art keywords
ribbon
coupling
lever
take
carbon paper
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US160963A
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English (en)
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Kamp Hans
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Olympia Werke AG
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Olympia Werke AG
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    • 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
    • B41J35/22—Mechanisms permitting the selective use of a plurality of ink ribbons
    • B41J35/23—Mechanisms permitting the selective use of a plurality of ink ribbons with two or more ribbon guides

Definitions

  • the present invention relates to a typewriter ribbon control arrangement, and more particularly to apparatus provided in a business machine, such as a typewriter, for selectively using either a standard two-color ribbon, or a carbon paper ribbon.
  • Typewriters are known in which, instead of a twocolor ribbon, two separate ribbons are provided, each of which is of a difterent color.
  • the ribbons are guided in separate guide forks, and are alternately wound up on spools on the right side, and on the left side of the guide fork.
  • Drive means are provided which are used for winding up one or the other of the two ribbons.
  • the arrangement has the disadvantage that the ribbon, which is not in use, is without tension, and consequently tends to form a loose loop in the guide fork which interferes with the operation of the other ribbon. This arrangement is unsuitable for use with a carbon paper ribbon, which passes only once and in one direction through the machine.
  • Apparatus for selectively using a carbon paper ribbon and a standard ribbon in a typewriter.
  • a carbon paper ribbon is threaded through the guide fork of the typewriter, and the ribbon transporting means of the machine are used for driving a friction drive attachment for the carbon paper ribbon.
  • the arrangement requires an exchange of the ribbons, and the mounting of an adapter, as well as a threading of the ribbon to be used into the guide fork from which the previously used ribbon has to be removed.
  • the standard width of a carbon paper ribbon is smaller than the width of an inked ribbon, a narrower guide must be inserted into the standard guide fork. The exchange of the ribbons is consequently so time consuming and involved, that it is preferably avoided by the operators of the typewriter or business machine.
  • an adapter for the carbon paper ribbon is mounted on a cover, which replaces the standard cover of the typewriter.
  • this construction it is necessary to dis connect the mechanism by which the standard ribbon fork is raised, since otherwise jamming of the carbon paper ribbon cannot be avoided.
  • a disadvantage of this, and similar arrangements, is that the used carbon paper ribbon is not wound up, but runs into a waste container adjacent the typewriter. The discarded carbon paper ribbon may interfere with the operation of the machine, or soil the support table or papers thereon.
  • Another object of the invention is to provide a ribbon control arrangement permitting selective use of an ink 3,154,185 Patented Get. 27, 1964 ribbon and a carbon paper ribbon in a business machine.
  • Another object of the present invention is to use the setting means, which are provided for setting the ribbon fork of the ink ribbon to red, black, or stencil respectively for an additional purpose, namely for setting the typewriter for operation with the carbon paper ribbon.
  • Another object of the present invention is to provide take-up means for winding up the carbon paper ribbon only in one direction, such take-up means being provided in addition to the conventional ribbon transporting means by which the ink ribbon is alternately wound up in opposite directions.
  • Another object of the present invention is to render the take-up means for the carbon paper ribbon inoperative when the machine is set to operation with an ink ribbon, and operative when the machine is set to operation with the carbon paper ribbon.
  • Another object of the present invention is to provide a special guide fork for the carbon paper ribbon in addition to the standard guide fork for the ink ribbon.
  • Another object of the present invention is to operate the guide fork for the carbon paper ribbon and the guide fork for the ink ribbon, by the same actuating drive mechanism, and to provide coupling means for selectively coupling the respective guide fork to the common actuating drive mechanism.
  • a further object of the present invention is to transport the carbon paper ribbon by a pair of friction rollers, which are step-wise driven, and to drive a take-up reel through a resilient means wln'ch stores some of the drive energy to hold the take-up reel in a position in which the carbon paper ribbon is taut.
  • first and second guide means are provided for a first ribbon and a second ribbon, and coupling means can be moved between a position connecting actuating drive means with the first guide means, and a position connecting the actuating drive means with the second guide means.
  • Setting means which are preferably used for setting one of the ribbons so that different zones of the ribbon become operative, are connected to the coupling means for shifting the same.
  • Take-up means including transporting rollers and a take-up reel are provided for winding up the carbon paper ribbon.
  • the take-up means is also controlled by the same setting means, and is rendered operative only when the setting means set the coupling means to connect the actuating means with the guide means of the carbon paper ribbon.
  • each guide fork can be raised by an operating lever.
  • the coupling means include a member slidable along the operating lever of the standard guide fork, and being turned by the setting means to vary the effective arm of this operating lever whereby the standard guide fork is raised to a diflferent extent, as in conventional machines.
  • the coupling member can be turned by the setting means to an additional position in which it does not actuate the operating lever of the standard guide fork, but actuates the guide fork for the carbon paper ribbon.
  • the operating lever of the standard guide fork is provided with a recess in which a projection of the coupling member ineffectively moves, if the machine is set to operation with the carbon paper ribbon.
  • This recess is similar to the recess which is provided in conventional machines for rendering the guide fork inoperative during stencil operations.
  • the take-up means for the carbon paper ribbon are driven from a stepwise operating drive means and include a pair of friction rollers directly driven from the stepwise operating drive means, and a take-up reel which is driven through a resilient transmission member capable of storing energy so that the take-up reel is biased to hold the carbon paper ribbon taut.
  • a resilient transmission member capable of storing energy so that the take-up reel is biased to hold the carbon paper ribbon taut.
  • an endless spring loop passes over two pulleys and the drive pulley has a greater peripheral speed than the driven pulley which is connected to the take-up reel.
  • the spring loop is tensioned while slipping on the pulleys.
  • FIG. 1 is a perspective view illustrating an embodiment of the invention in a position in which the lower zone of a two-color ribbon is used, and in which the guide fork is not actuated;
  • FIG. 2 is a fragmentary side view of the embodiment of FIG. 1 shown in the same position, with certain parts omitted for the sake of simplicity and clarity;
  • FiG. 3 is a fragmentary side view, corresponding to FIG. 2, but illustrating the raised operative position of the guide fork for the ink ribbon;
  • FIG. 4 is a fragmentary side view illustrating a position in which the machine is set to operation with a carbon paper ribbon
  • FIG. 5 is a fragmentary side view corresponding to FIG. 4, but illustrating the ribbon fork for the carbon paper ribbon in the raised operative position.
  • a specialribbon guide fork 3 of narrower width for a carbon paper ribbon 4 is provided behind the conventional guide fork 1 for an ink ribbon 2.
  • Ink ribbon 2 is wound up by conventional spools which alternately move the ribbon to the right and to the left in a conventional manner.
  • the carbon paper ribbon 4 is Wound off a let-off reel 5 which is turnably mounted'on a fixed axle 5a and is prevented from rapid turning movement by conventional brake means, not shown.
  • a resilient member may engage the outer rim of let-off reel 5.
  • roller 8 is connected through a shaft 12 to a stepping Wheel 19 which is driven by a pawl 11 in clockwise direction, as viewed in FIG. 1, and is prevented from turning in the opposite direction by a ratchet stop 81: provided adjacent roller 8 on shaft 12, as will be described hereinafter in greater detail.
  • a ratchet stop 81 provided adjacent roller 8 on shaft 12, as will be described hereinafter in greater detail.
  • the transported ribbon 4 is wound up on a take-up reel -6 driven by a shaft 16 which is connected to shaft 12 by a resilient transmission including a smaller pulley 13 on shaft 12, a'larger pulley on shaft 16, and a resilient spring loop 14 passing through corresponding peripheral grooves on pulleys 13 and 15.
  • the peripheral speed of pulley 13 is greater than the peripheral speed of pulley 15 which is determined by the rotary speed of take-up reel 6 and of pulley 15, so that the spring loop 14 slips on pulley 15 and is tensioned on its driving run 14a. Consequently, energy is stored in spring portion 14a, and when friction rollers 8 and 9 stop, spring portion 14a contracts, and biases reel 6 to turn in the clockwise wind-up direction so that the paper ribbon between rollers S, 9 and reel 6 is made taut.
  • a power drive roll 52 drives an eccentric disc 51 mounted on a lever 53 which is connected by a link 53a to a double-armed lever 17 so that lever 17 rocks and transmits its rocking movement through a projection 11a to pawl 11 so that the stepping wheel 10 is stepwise turned when the projection 11d engages the ratchet wheel 16.
  • a spring 17a connects pawl 11 with lever 17, and urges pawel 11 to an operative position in which pro jection 11d cooperates with the ratchet Wheel 10.
  • another spring 2tld is secured to a part 20a which is mounted on a linkage 20 by screws 29b passing through slots 200 in part 213a, and through corresponding bores in linkage 29.
  • the position of the part 252a can be adjusted until the spring force of spring 29d exceeds the spring force of spring 17:: in the normal position shown in FIG. 1 so that pawl 11 is held by spring Zild in an inoperative disengaged position in which projection 11d does not cooperate with ratchet wheel 16 rocking under control of lever 17 so that the transmission between the power drive roll 52 and take-up reel 6 is disengaged.
  • the linkage 21 is mounted on a pair of parallel arms 21 and 22 for movement parallel to itself.
  • Arm 22 is secured to a shaft 23 mounted on the machine frame, and arm 21 is mounted on a shaft 21a.
  • a cam follower roller 292 is mounted on the end of linkage 29 and cooperates with a cam 19 which is secured to a setting disc 18 for turning movement.
  • Cam 19 has four operative cam track portions, each of which is provided with a slight depression receiving cam follower roller 20s in the corresponding turned position of cam 19. In these positions of the setting means 18, 19, the spring 21b, acting on arm 21, pulls linkage 29 to the right as viewed 'in the drawing so that pawl 11 is in its inoperative position. In the position of cam 19 shown in FIGS.
  • cam follower roller Zile abuts a projection portion of cam 19 so that linkage 2i and part 29a are shifted to the left resulting in lesser tension of spring 2003 so that the spring force of spring 17a is sufficient for turning pawl 11 to its operative position in which projection 11d cooperates with ratchet wheel 11 and turns transporting roller 8.
  • a ratchet device Sb on shaft 12 prevents turning movement of ratchet wheel 1% in the opposite direction.
  • the first three cam track portions of cam 19 are used for setting the ink ribbon 2 between a position in which the black zone of the same is used, a position in which the red zone or" the same is used, and a position in which the ribbon is not used at all so that a stencil may be typed.
  • the general shape of the setting disc 18 and its arrangement in the typewriter corresponds to conventional arrangements so that no substantial rebuilding is necessary if a standard machine is adapted for use with a carbon paper ribbon in accordance with the present invention. It is only necessary to replace the standard cam with cam 19 which has a fourth projecting cam track portion coggeratmg through cam follower roller Ztle with linkage Arm 22 turns shaft 23 and a fixed lever arm 23a when the setting means 18, 19 is operated.
  • a lever 61 is mounted on a shaft 63 on a frame part 64 of the machine, and is articulated to another-lever 62 on which a coupling lever 29 is pivotallyvmounted.
  • Lever 29 has a projection 29a and a projecting pin 2% on which another coupling lever 23b is turnable.
  • the end of coupling lever 23b is articulated to lever arm 23a, so that, upon turning of shaft 23, coupling lever 29 is turned about its fulcrum on lever 62 an angle which corresponds to the turning angle of shaft 23, such turning angle being determined by the effective radius of the respective cam track portion of cam 19 acting on cam follower 29a of linkage 20.
  • An operating member 28 has a central bridging portion mounted on a fulcrum pin 128 for turning movement and two arms 28b and 28a.
  • Arm 28c is pivotally connected to guide fork 1 so that turning of operating member 23 in counterclockwise direction will result in raising of guide fork 1 from the normal lower position shown in FIGS. 1 and 2 to the higher operative position shown in FIG. 3.
  • Arm 28b has a slot 28a formed with two recesses 28c and 28d. Projecting pin 2% moves in slot 28a when the coupling member 29, 23b is shifted under control of cam 19. In the position shown in FIG. 1 and FIG. 2, the effective arm of operating lever 28b between pin 29]; and shaft 128 is the shortest.
  • pin 2% is located opposite the recess 28d. If cam 19 is further turned, pin 2% is located on the portion between recesses 28c and 28d, and when the highest cam track portion is effective, as shown in FIG. 4, pin 2% is located in the region of recess 230.
  • the second operating member 3% is mounted on a pin 130 on a frame portion, and has one arm articulated to guide fork 3, and another arm with a transverse projection 30a which cooperates with projection 2% if lever 29 is in the position shown in FIG. 4 in which pin 2% is located in the region of recess 280.
  • a rocking lever 24 is freely turnable on shaft 23 and has one end articulated to lever 62, and another end articulated to a link 25 which is pivotally connected to an arm 26 on a member 54 which has two supporting arms 54a and 54b turnably mounted on a shaft 540.
  • a projection of member 54b cooperates with pins 51a on the eccentric member 51 when the same is rotated by power roll 52.
  • member 5'4 and arm 26 are rocked, and this rocking movement is transmitted to the actuating lever 24 which reciprocates coupling member 2317, 29.
  • Such reciprocation effects an angular movement of operating member 28, if pin 2% abuts the edge of slot 28a, and is not located in the region of one of the recesses 28c and 23d.
  • An ink ribbon 2 is threaded in a conventional manner through the guide fork 1, and the end portion of a carbon paper ribbon on a supply spool on reel 5 is threaded through the guide fork 3, the guide 7, through the friction rollers g and 9, and secured to the take-up reel 6.
  • cam 19 is in the position shown in FIG. 2.
  • member 54 is rocked in a conventional manner by power drive roll 52 acting on eccentric member 51, and actuating lever 24 rocks coupling member 23b, 29 so that projecting pin 2% efiects an angular turning movement of operating lever 28 in counterclockwise direction resulting in raising of guide fork 1 to the operative position shown in FIG. 3 in which the red portion of the ribbon 2 is located in the path of the type lever.
  • This position of the setting means 18 may be indicated by a black mark on the outside of the typewriter casing, not shown.
  • linkage 20, 26a is shifted to the left, and the length of spring 20d is reduced, resulting in a reduction of the spring force so that the spring force of spring 17a prevails to pull pawl 11 to its operative position in which projection 11d cooperates with ratchet wheel 10.
  • Power drive roll 52 rotates eccentric disc 51, and effects through linkage 53, 53a rocking movement of lever 17 which is transferred to pawl 11 which turns ratchet wheel 10 stepwise so that the roller 8, and through gears 8a and 9a, also roller 9 are turned resulting in transport of the carbon paper ribbon 4 toward the take-up reel.
  • the take-up reel 6 is also driven by ratchet wheel 10 through shaft 12 and the pulley drive 13, 14, 15, so that the used paper ribbon 4 is wound up.
  • the run 14a is tensioned during the operation, since the peripheral speed of pulley 13 is greater than the peripheral speed of pulley 15 which is determined by the rotary speed of take-up reel 6 whose angular position is determined by paper ribbon 4.
  • the spring belt 14 slips thus in the groove of pulley 15 so that run 14a is tensioned while in the inoperative position of pawl 11, the part 14a contracts, and biases reel 6 to.
  • a typewriter ribbon control arrangement comprising, in combination first guide means for a first ink ribbon; second guide means fora second carbon paper ribbon; actuating means including a power roll; first coupling means movablebetween a first position for connecting said actuating means with said first guide means and a second position for connecting said actuating means with said second guide means, .said first and second guide means, respectively, being moved by said actuating means for rendering said firstand second ribbons, respectively, operative; take-up means for said second ribbon; second springbiased coupling means having a first inoperative position, and biased to move to a second coupling position for coupling.
  • setting means having a first position and a second position for shifting said first coupling means between said first and second positions, said setting means in said first position holding said second coupling means in said inoperative position, and permitting in said second position said spring-biased second coupling means to move to said second coupling position so that said take-up means winds up said second ribbon.
  • a typewriter ribbon control arrangement comprising, in combination first guide means for a first ink ribbon; second guide means for a second carbon-paper ribbongactuating means including a power roll; first coupling means movable between a plurality of first positions for connecting said actuating means with said first guide means and a second position for connecting said actuating means with said secondguide means, said first guide means being operated in said first positions by said actuating means for placing said first ribbon in different positions for rendering different zones of said first ribbon operative or inoperative, and said second guide means being operated by said actuating means for rendering said second ribbon operative; take-up means for said second ribbon; second spring-biased coupling means having a first inoperative position, and biased to move to a second coupling position for coupling said actuating means with said take-up means so that the same are driven for winding up said second ribbon; and setting means having a plurality of first positions and a second position for shifting said first coupling means between said plurality of first positions, and said second position, and for shifting said second coupling
  • a typewriter ribbon control arrangement comprising, in combination, a first guide fork for a first ribbon; first operating means for said first guide fork including an operating lever having a slot with a recess; a second guide fork for a second ribbon; second operating means for second guide fork including an operating member; actuating means; coupling means including a coupling member having a portion movable in said slot-between a plurality of first positions cooperating with different portions of said operating lever to vary the effective radius of said operating lever, and a second position cooperating With said operating member, said portion being located in said recess in said second position, said coupling member being actuated by said actuating means to effect in said first positions movement of said first guide fork to different positions for rendering different zones of said first ribbon operative or inoperative, and to elfect in said second position movement of said second guide fork for rendering said second ribbon operative while said portion moves inelfectively in said recess so that the movement of said coupling member is not transferred to said operating lever; and setting means connected
  • a typewriter ribbon control arrangement comprising, in combination, a first guide fork for a first ribbon
  • first operating means for said first guide fork including a first operating member; a second guide fork for a second ribbon, said second ribbon being a carbon paper band; second operating means for said second guide fork including a second operating member; actuating means; coupling means including a coupling member movable between a plurality of first positions cooperating with different portions of said first operating member, and a second position cooperating with said second operating member, said coupling member being actuated by said actuating means to effect in said first positions movement 'of said first guide fork to different positions for rendering different zones of said first ribbon operative or inoperative, and to etfect in said second position movement of said second guide fork for rendering said second ribbon operative; take-up means for said second ribbon, said take-up means including a take-up reel for winding up said second ribbon, a pair of cooperating rollers adapted to transport said second ribbon towards said take-up reel and through said second guide fork, a stepping wheel connected to one of said rollers for turning the same, a stepping
  • a typewriter ribbon control arrangement comprising, in combination, a first guide fork for a first ribbon; first operating means for said first guide fork including a first operating lever; a second guide fork for a second ribbon, said second ribbon being a carbon paper band; second operating means for said second guide fork including a second operating lever; actuating means including a rockable actuating lever; coupling means including a coupling member turnable between a plurality of first positions located opposite and cooperating with different portions of said first operating lever, and a second position cooperating with said second operating lever, said coupling member being connected to and actuated by said rockable actuating lever to effect in said first positions movement of said first guide fork to different positions for rendering different zones of said first ribbon operative or inoperative, and to effect in said second position movement of said second guide fork for rendering said second ribbon operative; take-up means for said second ribbon; drive means including a first rocking drive member, a second rocking drive member, means for actuating said rocking drive members, a first linkage connecting
  • a typewriter ribbon control arrangement comprising, in combination, first control means for moving an ink ribbon to an operative position; second control means for moving a carbon paper ribbon to an operative position; power drive means; coupling means including a coupling member movable between a plurality of first positions coupled with different portions of said first control means, and a second position coupled with said second control means and disengaged from said first control means, said coupling member being actuated by said power drive means to effect in said first positions movement of said first control means for different distances for rendering dififerent zones of said ink ribbon operative, and to effeet in said second position movement of said second control means for rendering said carbon paper ribbon operative; take-up means for winding up said carbon paper ribbon; transmission means connecting said power drive means with said take-up means and having a disengaged position; and setting means connected to said coupling member and having a plurality of first positions for shifting said coupling member between said first positions, and having a second position for shifting said coupling member to said second position, said setting means being
  • a typewriter ribbon control arrangement comprising, in combination, first control means for moving an ink ribbon to an operative position; second control means for moving a carbon paper ribbon to an operative position; power drive means; coupling means including a coupling member movable between a plurality of first positions coupled with different portions of said first control means, and a second position coupled with said second control means and disengaged from said first control means, said coupling member being actuated by said power drive means to effect in said first positions movement of said first control means for different distances for rendering different zones of said ink ribbon operative, and to effeet in said second position movement of said second control means for rendering said carbon paper ribbon operative; take-up means for winding up said carbon paper ribbon; transmission means including a stepping mechanism having a drive member, said transmission means connecting said actuating means with said take-up means; and setting means connected to said coupling member and having a plurality of first positions for shifting said coupling member between said first positions, and having a second position for shifting said coupling member to said second position,
  • a typewriter ribbon control arrangement comprising, in combination, first control means including an operating member for moving a first ribbon to an operative position, said operating member having a recess; second control means for moving a second ribbon to an operative position; coupling means having a first movable coupling member, said coupling means being shiftable between a first position in which said first coupling member is lo cated opposite an edge of said operating member, and a second position in which said first coupling member is located opposite said recess of said operating member, said coupling means having a second coupling member cooperating with said second control means in said second position of said coupling means and being inoperative in said first position; setting means connected to said coupling means for shifting the same between said first and second positions; and actuating means for actuating said first and second coupling members so that in said first position of the coupling means said first coupling member is moved transversely to said edge to actuate said operating member and said first control means, and so that in said second position of said coupling means said first coupling member moving into said rece
  • a typewriter ribbon control arrangement comprising, in combination, first control means including an operating member for moving a first ribbon to a plurality of operative positions, said operating member having a recess; second control means for moving a second ribbon to an operative position; coupling means having a first movable coupling member, said coupling means being shiftable between a plurality of first positions in which said first coupling member is located opposite an edge of said operating member, and a second position in which said first coupling member is located opposite said recess of said operating member, said coupling means having a second coupling member cooperating with said second control means in said second position of said coupling means and being inoperative in said first positions; setting means connected to said coupling means for shifting the same between said first positions and said second position; and actuating means for actuating said first and second coupling members so that in said first positions of the coupling means said first coupling member is moved transversely to said edge to actuate said operating member and said first control means so that said first ribbon is moved to difierent operative positions

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233716A (en) * 1962-04-26 1966-02-08 Grundig Max Ribbon positioning arrangement
US3397767A (en) * 1965-09-07 1968-08-20 Robert B. Hobbs Erasure tape mechanism for typewriters
US3598220A (en) * 1969-03-19 1971-08-10 Litton Business Systems Inc Ribbon-lifting mechanism for a typewriter
US3603443A (en) * 1969-03-19 1971-09-07 Litton Business Systems Inc Selective ribbon-handling mechanism for carbon and fabric ribbons
US3724633A (en) * 1970-12-30 1973-04-03 Ibm Feed system for an adhesive ribbon or the like
US3727743A (en) * 1970-03-07 1973-04-17 Triumph Werke Nuernberg Ag Carbon ribbon transporting and installation facilities
US3741364A (en) * 1971-01-08 1973-06-26 Datel Corp Ribbon shift assembly
US3788442A (en) * 1972-06-27 1974-01-29 Ibm Erase ribbon feed
US3927747A (en) * 1974-04-01 1975-12-23 William H Wolowitz Printing machine in which the ribbons in two different cartridges may be selectively used
US4145146A (en) * 1975-11-29 1979-03-20 Citizen Watch Co. Ltd. Recording medium feeding apparatus for printer
US4203677A (en) * 1977-09-14 1980-05-20 Exxon Research & Engineering Co. Printer ribbon lift assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US851142A (en) * 1906-10-31 1907-04-23 Underwood Typewriter Co Type-writing machine.
US1052104A (en) * 1910-07-21 1913-02-04 Underwood Typewriter Co Type-writing machine.
US2161856A (en) * 1937-04-28 1939-06-13 Coxhead Ralph C Corp Ribbon mechanism
US2609077A (en) * 1949-10-22 1952-09-02 Underwood Corp Ribbon feed for typewriting machines
FR1144446A (fr) * 1955-06-18 1957-10-14 Paillard Sa Machine à écrire
US2930470A (en) * 1958-11-24 1960-03-29 Ibm Reel mechanism for typewriter ribbons
US3022724A (en) * 1960-03-21 1962-02-27 Gottscho Inc Adolph Marking apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US851142A (en) * 1906-10-31 1907-04-23 Underwood Typewriter Co Type-writing machine.
US1052104A (en) * 1910-07-21 1913-02-04 Underwood Typewriter Co Type-writing machine.
US2161856A (en) * 1937-04-28 1939-06-13 Coxhead Ralph C Corp Ribbon mechanism
US2609077A (en) * 1949-10-22 1952-09-02 Underwood Corp Ribbon feed for typewriting machines
FR1144446A (fr) * 1955-06-18 1957-10-14 Paillard Sa Machine à écrire
US2930470A (en) * 1958-11-24 1960-03-29 Ibm Reel mechanism for typewriter ribbons
US3022724A (en) * 1960-03-21 1962-02-27 Gottscho Inc Adolph Marking apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233716A (en) * 1962-04-26 1966-02-08 Grundig Max Ribbon positioning arrangement
US3397767A (en) * 1965-09-07 1968-08-20 Robert B. Hobbs Erasure tape mechanism for typewriters
US3598220A (en) * 1969-03-19 1971-08-10 Litton Business Systems Inc Ribbon-lifting mechanism for a typewriter
US3603443A (en) * 1969-03-19 1971-09-07 Litton Business Systems Inc Selective ribbon-handling mechanism for carbon and fabric ribbons
US3727743A (en) * 1970-03-07 1973-04-17 Triumph Werke Nuernberg Ag Carbon ribbon transporting and installation facilities
US3724633A (en) * 1970-12-30 1973-04-03 Ibm Feed system for an adhesive ribbon or the like
US3741364A (en) * 1971-01-08 1973-06-26 Datel Corp Ribbon shift assembly
US3788442A (en) * 1972-06-27 1974-01-29 Ibm Erase ribbon feed
US3927747A (en) * 1974-04-01 1975-12-23 William H Wolowitz Printing machine in which the ribbons in two different cartridges may be selectively used
US4145146A (en) * 1975-11-29 1979-03-20 Citizen Watch Co. Ltd. Recording medium feeding apparatus for printer
US4203677A (en) * 1977-09-14 1980-05-20 Exxon Research & Engineering Co. Printer ribbon lift assembly

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NL6605113A (en, 2012) 1966-07-25
NL266071A (en, 2012)
GB972580A (en) 1964-10-14

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