EP0013699B1 - Dispositif pour changer des porte-caractères sous forme de disque dans une machine à écrire ou dans une machine de bureau analogue - Google Patents

Dispositif pour changer des porte-caractères sous forme de disque dans une machine à écrire ou dans une machine de bureau analogue Download PDF

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Publication number
EP0013699B1
EP0013699B1 EP19790104282 EP79104282A EP0013699B1 EP 0013699 B1 EP0013699 B1 EP 0013699B1 EP 19790104282 EP19790104282 EP 19790104282 EP 79104282 A EP79104282 A EP 79104282A EP 0013699 B1 EP0013699 B1 EP 0013699B1
Authority
EP
European Patent Office
Prior art keywords
insert member
daisy wheel
recess
coupling
type plate
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
Application number
EP19790104282
Other languages
German (de)
English (en)
Other versions
EP0013699A1 (fr
Inventor
Alfred Hesse
Alfred Keiter
Hermann Jendricke
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.)
Olympia Werke AG
Original Assignee
Olympia Werke AG
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
Application filed by Olympia Werke AG filed Critical Olympia Werke AG
Publication of EP0013699A1 publication Critical patent/EP0013699A1/fr
Application granted granted Critical
Publication of EP0013699B1 publication Critical patent/EP0013699B1/fr
Expired 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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/24—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being perpendicular to the axis of rotation
    • B41J1/243—Mounting or fixing the carriers

Definitions

  • the invention relates to a device for changing a type plate in a typewriter or similar office machine of the type specified in the preamble of claim 1.
  • the type plate In printing units with type plates in typewriters or similar machines, the type plate must also be easy to replace. This interchangeable type plate is very important in today's transition to foreign languages with other characters, to other fonts or even special formula characters. During this replacement, the type plate should be able to be removed or inserted as conveniently as possible from the holder without there being any risk of dropping or soiling the hands with printing ink.
  • a cassette in the form of a wall having an open recess has been made known by the German Offenlegungsschrift 2803433 to simplify equipping the printer with a type plate, the cassette receiving the type plate in the recess being influenced in such a way that the type plate is inserted into a guide coupling engagement with the shaft from a drive motor. This also avoids direct contact with a used printing wheel when it is replaced, in order to prevent the hands or clothing of the person operating the machine from being contaminated with printing ink.
  • the known cassette is not a closed container, the type plate can also be easily contaminated when not in use. It also does not prevent the types from being damaged if the cassette is dropped.
  • the invention has for its object to provide an inexpensive device for changing the type plate in typewriters or similar office machines, in which any operator of the machine can change the type plate without requiring special skill and without the risk of soiling the fingers consists.
  • the type disks that are not currently being used should be protected from dust contamination. This object is achieved with the invention specified in claim 1.
  • the device according to the invention enables a safe and easy replacement of the type plate without the easily fragile resilient tines having to be touched with the types.
  • the type plate is removed and put on from its holding device by means of the already existing insertion part of the storage container for the type plate. So no additional aids are required.
  • the insertion part 5 consists of two walls 9, 11 which are to be firmly connected to one another and are arranged at a distance from one another and which form an insertion slot for the type plate 3 between them.
  • the wall 9 contains at its lower end an open recess 13 with resilient webs 15, 17, which can be latched into locking recesses 23 of a hub 21 arranged concentrically with a bearing bore 19 on the type plate 3.
  • the type plate is non-positively coupled to the cover.
  • the insert part 5 has on its upper side a grip 25 with recessed grips 27, 29 for the fingers of the operator performing the change of the type plate.
  • the insert part 5, which is made of a transparent plastic, has on its sides guide surfaces 31, 33 with which the insert part 5 can be inserted into an insertion slot 35 of the storage container 1 which is open on one side.
  • an alignment web 39 is arranged in the insert part 5, which engages in a form-fitting manner in a recess 40 in the type plate 3 when the insert part 5 is in the coupled state with the type plate 3.
  • the recess 40 of the type plate 3 is advantageously located in an empty web 41 which has no types 43 and in which a part of the radially outer end of the circumference is cut away.
  • the rotary adjusting shaft 37 is shown, which can be driven via a motor 45, toothed belt 47 and gear wheels 48, 49.
  • a coupling member 51 which can be connected to the type disk 5 in the manner of a push button.
  • the coupling member 51 has a bore 53 around the rotary setting shaft 37, around the hub 55 of which a coil spring 57 is wound.
  • the hub 55 contains two opposite slots 59 through which the coil spring 57 projects into the bore 53.
  • the parts of the helical spring 57 protruding into this bore 53 can be snapped into a circumferential recess 61 of the hub 63 of the type plate 3 when the bearing bore 19 is supported on the free end of the rotary adjusting shaft 37.
  • the motor 45, the gear wheels 48, 49, the toothed belt 47 and the rotary adjusting shaft 37 with the coupling member 51 are arranged on a support 65 which can be pivoted about an axis 67 in the receiving device. 3, the spring 65 is held by the spring 69, the coupling member 51 of the rotary adjustment shaft 37 being coupled to the type carrier 3.
  • the receiving device In order to bring the type plate 3 according to FIG. 2 into a position required for coupling with the coupling member 51 of the rotary setting shaft 37, the receiving device has a stop pin 71.
  • This stop pin 71 is in alignment with the rotary adjustment shaft 37 when it is in the working position.
  • This stop pin 71 interacts with a downwardly open recess 73 in the wall 11 of the insert part 5 when the type plate 3 with the insert part 5 is pushed into the receiving device in the direction of arrow 75 according to FIG. 2.
  • the insertion part 5 slides with its guide surfaces 31, 33 between guides 77 for the ribbon forks, not shown, for the ink ribbon 79.
  • the insertion of the insertion part 5 into the receiving device is only possible if the wall 11 of the insertion part 5 is opposite the pressure roller 81.
  • the carrier 65 is arranged for decoupling the rotary adjusting shaft 37 from the type plate 3 so that it can be pivoted away from the pressure roller 81, the carrier 65 being able to be locked in this position by a latching device.
  • This locking device consists of a locking lever 83 which can be locked with its locking lug 89 behind a fixed stop 87 by means of the force of the spring 85. To unlock the carrier 65, only the locking lever 83 is pivoted in the direction of arrow 93 against the force of the spring 85 via a handle 91.
  • the insertion part 5 is first removed from the storage container 1 and pushed into the holding device in the direction of arrow 103 according to FIG. 3.
  • the insertion part 5 with its insertion slot 105 is pushed over the type plate 3 until the recess 73 comes into contact again with the stop pin 71.
  • the resilient webs 15, 17 automatically snap back into the locking recesses 23 of the hub 21, as a result of which the type plate 3 is automatically coupled to the insertion part 5.
  • the carrier 65 is pivoted from the working position shown in FIG. 3 into the position shown in FIG.,
  • the locking lever 83 automatically engages with its locking lug 89 behind the bolt 87.
  • the type plate 3 is automatically uncoupled from the rotary setting shaft 37 by a stripping device 107.
  • This stripping device 107 is arranged in a fixed position between the pivotable carrier 65 and the type plate in its working position and has a semicircular web 109 which is concentric with the hub 21. This web 109 presses against the type plate 3 during the pivoting process and releases the clutch. Since the type plate 3 is now uncoupled in front of the coupling member 51 of the rotary setting shaft 37, the type plate 3 with the insertion part 5 can be removed from the receiving device in the direction of arrow 101 according to FIG. 2.
  • the invention is not limited to the embodiment described, in particular the coupling device described between the rotary setting shaft 37 and the type disk 3 can be designed differently.
  • the carrier 65 does not necessarily have to be pivoted, but can also execute a parallel movement.

Landscapes

  • Packaging For Recording Disks (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (10)

1. Dispositif pour remplacer une roue porte-caractères dans une machine à écrire ou machine de bureau analogue, avec un outil de montage avec lequel la roue porte-caractères peut être accouplée et être insérée dans ou extraite d'un dispositif de réception de la machine, la roue porte-caractères pouvant être accouplée, au moyen d'un mécanisme d'accouplement, avec l'extrémité libre d'un arbre d'ajustement angulaire entraîné par un moteur, caractérisé par le fait que l'outil de montage est conformé en pièce d'introduction (5) d'une cassette de stockage (1), qui peut être insérée avec la roue (3) porte-caractères dans la cassette de stockage (1) et ferme cette dernière en position d'introduction, et par le fait que des organes d'accouplement et d'orientation (17, 23; 39,40) sont disposés dans la pièce d'introduction (5) et sur la roue (3) porte-caractères, pour relier de manière amovible la roue (3) porte-caractères et la pièce d'introduction (5) dans une position orientée déterminée.
2. Dispositif selon la revendication 1, caractérisé par le fait que la pièce d'introduction (5) présente à sa face supérieure une partie de préhension (25) avec des renfoncements de préhension (27, 29) du côté opposé au mécanisme d'accouplement (7) de la roue (3) porte-caractères et, sur ses côtés, des surfaces de guidage (31, 33) grâce auxquelles la pièce d'introduction (5) peut être introduite dans ou extraitede la cassette de stockage (1) ouverte sur une face et dans le dispositif de réception de la machine.
3. Dispositif selon la revendication 2, caractérisé par le fait que la pièce d'introduction (5) servant de mécanisme d'accouplement comporte une échancrure (13) ouverte par-en bas, avec des languettes élastiques (15, 17) qui peuvent être emboîtées dans des crans (23) d'un moyeu (21), disposés concentriquement à un trou de montage (19) de la roue (3) porte-caractères.
4. Dispositif selon la revendication 3, caractérisé par le fait que la pièce d'introduction (5) présente deux parois (9, 11) distantes l'une de l'autre, qui forment une fente (105) d'introduction de la roue (3) porte-caractères, l'une (9) des parois étant dotée à son extrémité inférieure des languettes élastiques (15, 17).
5. Dispositif selon la revendication 4, caractérisé par le fait que la seconde paroi (11) de la pièce d'introduction (5), faisant face au cylindre d'écriture (81), comporte une échancrure (73) ouverte vers le bas, qui, lors de l'insertion de la pièce d'introduction (5) dans le dispositif de réception de la machine, vient s'appliquer contre un tenon de butée (71) servant de butée limite et placé dans l'alignement de l'arbre (37) d'ajustement angulaire dans la position de travail de ce dernier.
6. Dispositif selon la revendication 1, caractérisé par le fait que les organes d'orientation présentent un ergot de centrage (39) qui, placé dans la pièce d'introduction (5), pénètre par conformation, lors de l'insertion de la roue (3) porte-caractères dans la fente d'introduction (105) de la pièce d'introduction (5), dans un évidement (40) de la roue (3) porte-caractères.
7. Dispositif selon la revendication 6, caractérisé par le fait que l'évidement (40) est ménagé dans une lamelle vierge (41) qui ne comporte pas de caractères (43) et dont une partie de l'extrémité radiale externe de sa zone périphérique est évidée.
8. Dispositif selon l'une des revendications précédentes, caractérisé par le fait que l'arbre (37) d'ajustement angulaire est placé sur un support pivotant (65) qui peut pivoter à une position à l'écart du cylindre d'écriture (81) pour supprimer l'accouplement entre la roue (3) porte-caractères et l'arbre (37) d'ajustement angulaire, l'accouplement entre la roue (3) porte-caractères et l'arbre (37) d'ajustement angulaire pouvant être supprimé par un dispositif de séparation.
9. Dispositif selon la revendication 8, caractérisé par le fait que le dispositif de séparation (107) présente une nervure semi-circulaire (109) qui occupe une position stationnaire entre la roue (3) porte-caractères en position de travail et le support pivotant (65).
10. Dispositif selon la revendication 2, caractérisé par le fait que les guides (77) pour les fourches du ruban encreur comportent en même temps des surfaces de guidage (78) pour la pièce d'introduction (5).
EP19790104282 1978-12-22 1979-11-02 Dispositif pour changer des porte-caractères sous forme de disque dans une machine à écrire ou dans une machine de bureau analogue Expired EP0013699B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782855503 DE2855503C2 (de) 1978-12-22 1978-12-22 Einrichtung zum Wechsel einer Typenscheibe in einer Schreib- o.ä. Büromaschine
DE2855503 1978-12-22

Publications (2)

Publication Number Publication Date
EP0013699A1 EP0013699A1 (fr) 1980-08-06
EP0013699B1 true EP0013699B1 (fr) 1982-11-17

Family

ID=6058007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790104282 Expired EP0013699B1 (fr) 1978-12-22 1979-11-02 Dispositif pour changer des porte-caractères sous forme de disque dans une machine à écrire ou dans une machine de bureau analogue

Country Status (2)

Country Link
EP (1) EP0013699B1 (fr)
DE (1) DE2855503C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2950071A1 (de) * 1979-12-13 1981-06-19 Olympia Werke Ag, 2940 Wilhelmshaven Druckwerk fuer eine schreib- o.ae. bueromaschine mit einer typenscheiben
DE8109006U1 (de) * 1981-03-27 1981-08-27 Triumph-Adler Aktiengesellschaft für Büro- und Informationstechnik, 8500 Nürnberg Typenscheibe und hilfswerkzeug zum einsatz in schreib- o.ae. maschinen
IT1158917B (it) * 1983-03-30 1987-02-25 Olivetti & Co Spa Stampante seriale
CH654526A5 (fr) * 1983-11-25 1986-02-28 Caracteres Sa Disque porte-caracteres pour machine imprimante.
DE3446849A1 (de) * 1984-12-19 1986-06-26 Alfred Ransmayer & Albert Rodrian, 1000 Berlin Typenradanordnung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1299131A (en) * 1969-03-20 1972-12-06 Nortron Inc Selective recording unit
DE2639872C2 (de) * 1976-09-04 1978-09-21 Olympia Werke Ag, 2940 Wilhelmshaven Schreibwerk mit einer Typenscheibe
US4124312A (en) * 1977-02-10 1978-11-07 Xerox Corporation Impact printer with print wheel cartridge
US4127335A (en) * 1977-02-10 1978-11-28 Xerox Corporation Impact printer with cartridge print wheel

Also Published As

Publication number Publication date
DE2855503A1 (de) 1980-07-03
EP0013699A1 (fr) 1980-08-06
DE2855503C2 (de) 1985-12-19

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