EP0013699A1 - Changing device for a typedisc in a typewriter or similar business machine - Google Patents

Changing device for a typedisc in a typewriter or similar business machine Download PDF

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Publication number
EP0013699A1
EP0013699A1 EP19790104282 EP79104282A EP0013699A1 EP 0013699 A1 EP0013699 A1 EP 0013699A1 EP 19790104282 EP19790104282 EP 19790104282 EP 79104282 A EP79104282 A EP 79104282A EP 0013699 A1 EP0013699 A1 EP 0013699A1
Authority
EP
European Patent Office
Prior art keywords
type plate
cover
coupling
recess
machine
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.)
Granted
Application number
EP19790104282
Other languages
German (de)
French (fr)
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EP0013699B1 (en
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/en
Application granted granted Critical
Publication of EP0013699B1 publication Critical patent/EP0013699B1/en
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 and 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. With this replacement, the type plate should be able to be removed or inserted as conveniently as possible from the holder without the risk of dropping or soiling the hands with printing ink.
  • a machine-internal container for a type plate is known from German Offenlegungsschrift 2 010 206.
  • This container also has the bearing means for the rotary adjusting shaft of the type plate and, on the other hand, serves to protect the type plate against impurities which could result from internal transmission elements.
  • this known arrangement has no means by which the type plate could be replaced easily and without contamination.
  • a cassette for simplifying equipping the printer with a type plate has become known from German published patent application 2 803 433, the cassette being influenced after insertion into a guide in such a way that the type plate located therein engages in a coupling engagement with the shaft of a drive motor reached. 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 cassette is not a closed container, so that the type plate can easily become dirty when not in use. In addition, this 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 replace the type plate without requiring special skill and without the risk of finger soiling .
  • 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 through the already existing cover of the storage container for the type plate. So no additional aids are required.
  • FIG. 1 shows a type plate 3 which can be non-positively connected via a coupling device 7 to a cover 5 of a storage container 1 serving as an assembly tool.
  • the cover 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 with the cover 5 is non-positively coupled.
  • the cover 5 is designed as a slide and 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 lid 5, which is made of a transparent plastic, has on its sides guide surfaces 31, 33 with which the lid 5 can be inserted into an insertion slot 35 of the storage container 1, which is open on one side.
  • the type plate 3 In order to always be able to insert the type plate 3 in a certain rotational position into the receiving device according to FIGS. 2 and 3, the latter is always held centered in the cover 5 in a position disassembled from a rotary adjustment shaft 37.
  • a centering web 39 is arranged in the cover 5, which engages in a form-fitting manner in a recess 40 in the type plate 3 when the cover 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 peripheral section is cut away.
  • FIGS. 2 and 3 show the rotary setting shaft 37, which can be driven via a motor 45, toothed belt 47 and toothed wheels 48, 49.
  • a coupling member 51 is arranged, 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.
  • the carrier 65 In the working position, the carrier 65 is held according to FIG. 3 by the spring 69, the coupling member 51 of the rotary setting shaft 37 being coupled to the type carrier 3.
  • the receiving device has a stop pin 71.
  • This stop pin 71 is in alignment with the rotary adjusting shaft 37 when it is in the working position finds.
  • This stop pin 71 interacts with a downwardly open recess 73 in the wall 11 of the cover 5 when the type plate 3 with the cover 5 is pushed into the receiving device in the direction of arrow 75 according to FIG. 2.
  • the cover 5 slides with its guide surfaces 31, 33 between guides 77 for the ribbon forks (not shown) for the ribbon 79. The cover 5 can only be pushed into the receiving device if the wall 11 of the cover 5 is opposite the pressure roller 81.
  • the carrier 65 is arranged to decouple the rotary setting 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 cover 5 is first removed from the storage container 1 and pushed into the receptacle in the direction of arrow 103 according to FIG.
  • the cover 5 is pushed with its insertion slot 105 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 cover 5.
  • the carrier 65 is pivoted from the working position according to FIG. 3 into the position according to FIG. 2, the latching lever 83 automatically latching behind the bolt 87 with its latching lug 89.
  • 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 3 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. Now that the type plate 3 of the coupling member 51 of the rotary adjusting shaft 37 is uncoupled, the type plate 3 can be removed with the cover 5 in the direction of arrow 101 according to Figure 2 from the receiving device.
  • 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)

Abstract

1. A device for exchanging a daisy wheel in a printer or similar office machine having an assembly tool with which the daisy wheel can be coupled an inserted into or taken out of a mounting arrangement of the machine so that the daisy wheel can be coupled by means of a coupling arrangement to the free end of a rotary adjustment shaft which can be driven by a motor, characterized in that the assembly tool is formed as an insert member (5) of a storage container (1), the member being insertable with the daisy wheel (3) into the storage container (1) and closing the container in the inserted position and that coupling and alignment elements (17, 23, 39, 40) are arranged in the insert member (5) and on the daisy wheel (3) in order to detachably connect the daisy wheel (3) to the insert member (5) in a particular aligned position.

Description

Die Erfindung betrifft eine Einrichtung zum Wechseln einer Typenscheibe in einer Schreib- oder ähnlichen Büromaschine der im Oberbegriff des Patentanspruchs 1 angegebenen Art.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.

Bei Druckwerken mit Typenscheiben in Schreib- und ähnlichen Maschinen muß auch eine leichte Auswechselbarkeit der Typenscheibe gewährleistet sein. Diese auswechselbare Typenscheibe hat große Bedeutung beim heutigen Übergang auf fremde Sprachen mit anderen Schriftzeichen, auf andere Schriftarten oder auch spezielle Formelzeichen. Bei diesem Auswechseln soll die Typenscheibe möglichst bequem aus der Halterung entfernt oder eingesetzt werden können, ohne daß die Gefahr des Fallenlassens oder der Beschmutzung der Hände mit Druckfarbe besteht.In printing units with type plates in typewriters and 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. With this replacement, the type plate should be able to be removed or inserted as conveniently as possible from the holder without the risk of dropping or soiling the hands with printing ink.

Durch die deutsche Offenlegungsschrift 2 010 206 ist ein maschineninterner Behälter für eine Typenscheibe bekannt. Dieser Behälter weist auch die Lagermittel für die Dreheinstellwelle der Typenscheibe auf und dient andererseits dazu, die Typenscheibe gegen Verunreinigungen, die von maschineninternen Getriebegliedern herrühren könnten, zu schützen. Diese bekannte Anordnung weist aber keine Mittel auf, durch die die Typenscheibe leicht und ohne Beschmutzung ausgewechselt werden könnte.A machine-internal container for a type plate is known from German Offenlegungsschrift 2 010 206. This container also has the bearing means for the rotary adjusting shaft of the type plate and, on the other hand, serves to protect the type plate against impurities which could result from internal transmission elements. However, this known arrangement has no means by which the type plate could be replaced easily and without contamination.

Weiterhin ist durch die deutsche Offenlegungsschrift 2 803 433 eine Kassette zur vereinfachen Bestückung des Druckers mit einer Typenscheibe bekannt geworden, wobei die .Kassette nach Einsetzen in eine Führung dergestalt beeinflußt wird, daß die darin befindliche Typenscheibe in eine kuppelnde Eingriffnahme mit der Welle von einem Antriebsmotor gelangt. Hierdurch wird auch die direkte Berührung mit einem gebrauchten Druckrad bei dessen Austausch vermieden, um eine Verschmutzung der Hände oder Kleidung der die Maschiene bedienende Person mit Druckfarbe zu verhindern. Die bekannte Kassette ist aber kein geschlossener Behälter, so daß die Typenscheibe in Außerbetriebslage auch leicht verschmutzt werden kann. Außerdem wird hierbei nciht vermieden, daß die Typen bei einem etwaigen Fallenlassen der Kassette nicht beschädigt werden.Furthermore, a cassette for simplifying equipping the printer with a type plate has become known from German published patent application 2 803 433, the cassette being influenced after insertion into a guide in such a way that the type plate located therein engages in a coupling engagement with the shaft of a drive motor reached. 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 well-known However, the cassette is not a closed container, so that the type plate can easily become dirty when not in use. In addition, this does not prevent the types from being damaged if the cassette is dropped.

Der Erfindung liegt die Aufgabe zugrunde, eine billige Einrichtung zum Wechseln der Typenscheibe bei Schreib- oder ähnlichen Büromaschinen zu schaffen, bei der jede_Bedienkraft der Maschine die Typenscheibe auswechseln kann, ohne daß eine besondere Geschicklichkeit erforderlich ist und ohne daß die Gefahr einer Verschmutzung der Finger besteht. Außerdem sollen die jeweils gerade nicht benutzten Typenscheiben vor Verschmutzung durch Staub geschützt werden. Diese Aufgabe wird mit der im Patentanspruch 1 angegebenen Erfindung gelöst.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 replace the type plate without requiring special skill and without the risk of finger soiling . In addition, 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.

Die erfindungsgemäße Einrichtung ermöglicht ein sicheres und leichtes Auswechseln der Typenscheibe, ohne daß die leicht zerbrechlichen federnden Zinken mit den Typen dabei berührt werden müssen. Das Abnehmen und Aufsetzen der Typenscheibe aus seiner Aufnahmevorrichtung erfolgt durch den schon vorhandenen Deckel des Aufbewahrungsbehälters für die Typenscheibe. Es sind also keine zusätzlichen Hilfsmittel mehr erforderlich.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 through the already existing cover of the storage container for the type plate. So no additional aids are required.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgegenstandes sind den weiteren Unteransprüchen zu entnehmen.Further advantageous refinements of the subject matter of the invention can be found in the further subclaims.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und im folgenden beschrieben. Es zeigt:

  • Figur 1 die Typenscheibe und den Aufbewahrungsbehälter mit Deckel in schaubildlicher Darstellung,
  • Figur 2 die Aufnahmevorrichtung für die Typenscheibe in der Maschine mit dem Deckel als Montagewerkzeug und
  • Figur 3 eine Darstellung gemäß Figur 2 mit abgezogenem Deckel und geschlossene Kupplung zwischen Typenscheibe und Dreheinstellwelle.
An embodiment of the invention is shown in the drawings and described below. It shows:
  • FIG. 1 shows the type plate and the storage container with lid in a diagrammatic representation,
  • Figure 2 shows the receiving device for the type plate in the machine with the lid as an assembly tool and
  • 3 shows a representation according to FIG. 2 with the cover removed and the coupling between the type plate and the rotary adjusting shaft removed.

In der Figur 1 ist eine Typenscheibe 3 dargestellt, die über eine Kupplungseinrichtung 7 mit einem als Montagewerkzeug dienenden Deckel 5 eines Aufbewahrungsbehälters 1 kraftschlüssig verbindbar ist. Der Deckel 5 besteht aus zwei fest miteinander zu verbindenden und im Abstand zueinander angeordneten Wänden 9, 11, welche zwischen sich einen Einschubschlitz für die Typenscheibe 3 bilden. Die Wand 9 enthält an seinem unteren Ende eine offene Ausnehmung 13 mit federnden Stegen 15, 17, die in konzentrisch zu einer Lagerbohrung 19 an der Typenscheibe 3 angeordnete Rastausnehmungen 23 einer Nabe 21 einrastbar sind. Hierdurch wird die Typenscheibe mit dem Deckel 5 kraftschlüssig gekuppelt. Der Deckel 5 ist als Schieber ausgebildet und weist an seiner Oberseite ein Griffstück 25 mit beidseitigen Griffmulden 27, 29 für die Finger der den Wechsel der Typenscheibe ausführenden Bedienungsperson versehen. Der aus einem transparenten Kunststoff bestehende Deckel 5 weist an seinen Seiten Führungsflächen 31, 33 auf, mit welchen der Deckel 5 in eine Einführungsschlitz 35 des an einer Seite offenen Aufbewahrungsbehälters 1 einschiebbar ist.FIG. 1 shows a type plate 3 which can be non-positively connected via a coupling device 7 to a cover 5 of a storage container 1 serving as an assembly tool. The cover 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. As a result, the type plate with the cover 5 is non-positively coupled. The cover 5 is designed as a slide and 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 lid 5, which is made of a transparent plastic, has on its sides guide surfaces 31, 33 with which the lid 5 can be inserted into an insertion slot 35 of the storage container 1, which is open on one side.

Um die Typenscheibe 3 immer in einer bestimmten Drehstellung in die Aufnahmevorrichtung gemäß den Figuren 2 und 3 einsetzen zu können, wird diese in einer von einer Dreheinstellwelle 37 demontierten Lage immer in dem Deckel 5 zentriert gehalten. Für diesen Zweck ist in dem Deckel 5 ein Zentriersteg 39 angeordnet, welcher in eine Ausnehmung 40 der Typenscheibe 3 formschlüssig eingreift, wenn der Deckel 5 sich mit der Typenscheibe 3 im eingekuppelten Zustand befindet. Die Ausnehmung 40 der Typenscheibe 3 befindet sich vorteilhaft in einem Leersteg 41, welcher keine Typen 43 aufweist und bei welchem ein Teil des radial äußeren Endes des Umfangsabschnitts weggeschnitten ist.In order to always be able to insert the type plate 3 in a certain rotational position into the receiving device according to FIGS. 2 and 3, the latter is always held centered in the cover 5 in a position disassembled from a rotary adjustment shaft 37. For for this purpose, a centering web 39 is arranged in the cover 5, which engages in a form-fitting manner in a recess 40 in the type plate 3 when the cover 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 peripheral section is cut away.

In den Figuren 2 und 3 ist die Dreheinstellwelle 37 dargestellt, welche über ein Motor 45, Zahnriemen 47 und Zahnräder 48, 49 antreibbar ist. An dem freien Ende der Dreheinstellwelle 37 ist ein Kupplungsglied 51 angeordnet, das druckknopfartig mit der Typenscheibe 5 verbindbar ist. Hierbei weist das Kupplungsglied .51 eine Bohrung 53 um die Dreheinstellwelle 37 auf, um deren Nabe 55 eine Schraubenfeder 57 geschlungen ist. Die Nabe 55 enthält zwei gegenüberliegende Schlitze 59 durch welche die Schraubenfeder 57 in die Bohrung 53 ragt. Die in diese Bohrung 53 ragenden Teile der Schraubenfeder 57 sind in eine umlaufende Ausnehmung 61 der Nabe 63 der Typenscheibe 3 einrastbar, wenn die Lagerbohrung 19 auf dem freien Ende der Dreheinstellwelle 37 lagert. Der Motor 45, die Zahnräder 48, 49, der Zahnriemen 47 und die Dreheinstellwelle 37 mit dem Kupplungsglied 51 sind auf einem um eine Achse 67 schwenkbaren Träger 65 in der Aufnahmevorrichtung angeordnet. In der Arbeitsstellung wird der Träger 65 gemäß Figur 3 durch die Feder 69 gehalten, wobei das Kupplungsglied 51 der Dreheinstellwelle 37 mit dem Typenträger 3 gekuppelt ist.FIGS. 2 and 3 show the rotary setting shaft 37, which can be driven via a motor 45, toothed belt 47 and toothed wheels 48, 49. At the free end of the rotary setting shaft 37, a coupling member 51 is arranged, which can be connected to the type disk 5 in the manner of a push button. Here, 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. In the working position, the carrier 65 is held according to FIG. 3 by the spring 69, the coupling member 51 of the rotary setting shaft 37 being coupled to the type carrier 3.

Um die Typenscheibe 3 gemäß Figur 2 in eine zum Kuppeln mit dem Kupplungsglied 51 der Dreheinstellwelle 37 erforderlichen Lage zu bringen, weist die Aufnahmevorrichtung einen Anschlagbolzen 71 auf. Dieser Anschlagbolzen 71 befindet sich in Fluchtlage mit der Dreheinstellwelle 37, wenn diese sich in der Arbeitslage befindet. Dieser Anschlagbolzen 71 wirkt mit einer nach unten offenen Ausnehmung 73 in der Wand 11 des Deckels 5 zusammen, wenn die Typenscheibe 3 mit dem Deckel 5 in Pfeilrichtung 75 gemäß Figur 2 in die Aufnahmevorrichtung eingeschoben wird. Hierbei gleitet der Deckel 5 mit seinen Führungsflächen 31, 33 zwischen Führungen 77 für die nicht dargestellten Farbbandgabeln für das Farbband 79. Das Einschieben des Deckels 5 in die Aufnahmevorrichtung ist nur möglich, wenn die Wand 11 des Deckels 5 der Druckwalze 81 gegenüberliegt. Der Träger 65 ist zum Entkoppeln der Dreheinstellwelle 37 von der Typenscheibe 3 von der Druckwalze 81 wegschwenkbar angeordnet, wobei der Träger 65 in dieser Lage durch eine Rastvorrichtung verrastbar ist. Diese Rastvorrichtung besteht aus einem Rasthebel 83, der mittels der Kraft der Feder 85 mit seiner Rastnase 89 hinter einem festen Anschlag 87 verrastbar ist. Zum Entrasten des Trägers 65 wird lediglich der Rasthebel 83 über einen Handgriff 91 in Pfeilrichtung 93 gegen die Kraft der Feder 85 verschwenkt.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 adjusting shaft 37 when it is in the working position finds. This stop pin 71 interacts with a downwardly open recess 73 in the wall 11 of the cover 5 when the type plate 3 with the cover 5 is pushed into the receiving device in the direction of arrow 75 according to FIG. 2. Here, the cover 5 slides with its guide surfaces 31, 33 between guides 77 for the ribbon forks (not shown) for the ribbon 79. The cover 5 can only be pushed into the receiving device if the wall 11 of the cover 5 is opposite the pressure roller 81. The carrier 65 is arranged to decouple the rotary setting 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.

Die Wirkungsweise des Erfindungsgegenstandes ist folgende:

  • Beim Einsetzen einer neuen Typenscheibe 3 wird diese zusammen mit dem Deckel 5 aus einem Aufbewahrungsbehälter 1 gezogen und in Pfeilrichtung 75 gemäß Figur 2 in die Aufnahmevorrichtung so weit geschoben, bis die Ausnehmung 73 an dem Deckel 5 an dem Anschlagbolzen 71 zur Anlage kommt. Danach wird der Träger 65 in der Raststellung entriegelt, wobei der Rasthebel 83 von Hand in Pfeilrichtung 93 beaufschlagt wird. Durch die Freigabe der Feder 69 wird der Träger 65 um den Drehpunkt-67 in Pfeilrichtung 92 geschwenkt, wobei die Bohrung 53 des Kupplungsgliedes 51 über die Nabe 63 geschoben wird. Hierbei rastet die Schraubenfeder in die umlaufende Ausnehmung 61 ein.-Die formschlüssige Mitnahme der Typenscheibe 3 in Drehrichtung erfolgt über einen Mitnahmezapfen 95 an der Typenscheibe, welcher in eine entsprechende Ausnehmung 97 an einem von dem Motor 45 angetriebenen Antriebsglied 99 spielfrei eingreift. Nach dem Kupplungsvorgang der Typenscheibe 3 mit dem Kupplungsglied 51 der Dreheinstellwelle 37 kann der Deckel 5 in Pfeilrichtung 101 abgezogen werden, wobei die federnden Zinken 15, 17 die Rastvertiefungen 23 der Nabe 21 verlassen. Der Schreibvorgang kann nun mit einer neuen Typenscheibe 3 mit einer gleichen oder anderen Schriftart fortgesetzt werden. Während des Schreibvorganges wird der Deckel 5 wieder in den Aufbewahrungsbehälter 1 geschoben.
The mode of operation of the subject matter of the invention is as follows:
  • When a new type disk 3 is inserted, it is pulled out of a storage container 1 together with the lid 5 and pushed into the receiving device in the direction of arrow 75 according to FIG. 2 until the recess 73 on the lid 5 comes into contact with the stop bolt 71. The carrier 65 is then unlocked in the latching position, the latching lever 83 being actuated by hand in the direction of arrow 93. By releasing the spring 69, the carrier 65 is pivoted about the pivot point 67 in the direction of arrow 92, the bore 53 of the coupling member 51 being pushed over the hub 63. Here, the coil spring snaps into the circumferential recess 61. The positive engagement of the type plate 3 in the direction of rotation takes place via a drive pin 95 on the type plate, which ent speaking recess 97 engages on a drive member 99 driven by the motor 45 without play. After coupling the type plate 3 with the coupling member 51 of the rotary setting shaft 37, the cover 5 can be pulled off in the direction of the arrow 101, the resilient prongs 15, 17 leaving the locking recesses 23 of the hub 21. The writing process can now be continued with a new type plate 3 with the same or a different font. During the writing process, the lid 5 is pushed back into the storage container 1.

Soll die Typenscheibe 3 aus der Aufnahmevorrichtung wieder entfernt werden, so nimmt man zunächst den Deckel 5 von dem Aufbewahrungsbehälter 1 und schiebt diesen in Pfeilrichtung 103 gemäß Figur 3 in die Aufnahmevorrichtung. Hierbei wird der Deckel 5 mit seinem Einschubschlitz 105 über die Typenscheibe.3 so weit geschoben, bis die Ausnehmung 73 wieder auf dem Anschlagbolzen 71 zur Anlage kommt. Bei diesem Einschiebevorgang rasten die federnden Stege 15, 17 wieder selbsttätig in die Rastausnehmungen 23 der Nabe 21 ein, wodurch die Typenscheibe 3 selbsttätig mit dem Deckel 5 gekuppelt wird. Danach wird der Träger 65 aus der Arbeitsstellung gemäß Figur 3 in die Stellung gemäß Figur 2 geschwenkt, wobei der Rasthebel 83 selbsttätig mit seiner Rastnase 89 hinter dem Bolzen 87 einrastet. Bei dieser Schwenkbewegung wird die Typenscheibe 3 durch eine Abstreifvorrichtung 107 von der Dreheinstellwelle 37 automatisch entkuppelt. Diese Abstreifvorrichtung 107 ist ortsfest zwischen dem schwenkbaren Träger 65 und der Typenscheibe 3 in ihrer Arbeitsstellung angeordnet und hat einen halbkreisförmigen Steg 109, welcher konzentrisch zu der Nabe 21 ausgebildet ist. Dieser Steg 109 drückt beim Schwenkvorgang gegen die Typenscheibe 3 und löst die Kupplung. Da nun die Typenscheibe 3 von dem Kupplungsglied 51 der Dreheinstellwelle 37 entkuppelt ist, kann die Typenscheibe 3 mit dem Deckel 5 in Pfeilrichtung 101 gemäß Figur 2 aus der Aufnahmevorrichtung entfernt werden. Um die Typenscheibe immer in einer bestimmten Stellung in dem Deckel 5 zu halten, ist es erforderlich, daß die Ausnehmung 40 an dem Leersteg beim Wechselvorgang immer in derselben Ausgangsstellung befindet. Nur in dieser bestimmten Ausgangsstellung kann der Zentriersteg 39 in die Ausnehmung 40 des Leersteges 41 einrasten.If the type plate 3 is to be removed from the receptacle again, the cover 5 is first removed from the storage container 1 and pushed into the receptacle in the direction of arrow 103 according to FIG. Here, the cover 5 is pushed with its insertion slot 105 over the type plate 3 until the recess 73 comes into contact again with the stop pin 71. During this insertion process, 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 cover 5. Thereafter, the carrier 65 is pivoted from the working position according to FIG. 3 into the position according to FIG. 2, the latching lever 83 automatically latching behind the bolt 87 with its latching lug 89. During this pivoting movement, 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 3 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. Now that the type plate 3 of the coupling member 51 of the rotary adjusting shaft 37 is uncoupled, the type plate 3 can be removed with the cover 5 in the direction of arrow 101 according to Figure 2 from the receiving device. In order to always keep the type plate in a certain position in the cover 5, it is necessary that the recess 40 on the empty web is always in the same starting position during the changing process. The centering web 39 can only engage in the recess 40 of the empty web 41 in this specific starting position.

Das Wechseln der Typenscheibe erfordert also von der die Maschine bedienende Person keine besondere Geschicklichkeit. Ein Beschmutzen der Finger ist bei diesem Wechseln ausgeschlossen.Changing the type plate does not require any particular skill from the person operating the machine. Soiling of the fingers is impossible with this change.

Die Erfindung ist nicht auf die beschriebene Ausführungsform beschränkt, insbesondere kann die beschriebene Kupplungseinrichtung zwischen der Dreheinstellwelle 37 und der Typenscheibe 3 anders ausgebildet sein. Bei diesem Kupplungsvorgang braucht der Träger 65 auch nicht unbedingt geschwenkt zu werden, sondern kann auch eine parallele Bewegung ausführen.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. In this coupling process, the carrier 65 does not necessarily have to be pivoted, but can also execute a parallel movement.

Claims (10)

1. Einrichtung zum Wechseln einer Typenscheibe in einer Schreib- oder ähnlichen Büromaschine mit einem Montagewerkzeug, mit dem die Typenscheibe kuppelbar und in eine Aufnahmevorrichtung der Maschine einsetz- bzw. herausnehmbar ist, wobei die Typenscheibe mittels einer Kupplungseinrichtung am freien Ende einer von einem Motor antreibbaren Dreheinstellwelle ankuppelbar ist, dadurch gekennzeichnet, daß das Montagewerkzeug ein Deckel (5) eines Aufbewahrungsbehälters (1) für die Typenscheibe (3) ist und daß Kupplungs-und Zentrierglieder in dem Deckel (5) und an der Typenscheibe (3) angeordnet sind, um die Typenscheibe (3) mit dem Deckel (5) zu kuppeln und in einer von der Dreheinstellwelle (37) demontierten Lage zu zentrieren.1. Device for changing a type plate in a typewriter or similar office machine with an assembly tool with which the type plate can be coupled and inserted into or removed from a receiving device of the machine, the type plate being able to be driven by a motor by means of a coupling device at the free end Rotary adjustment shaft can be coupled, characterized in that the assembly tool is a lid (5) of a storage container (1) for the type plate (3) and that coupling and centering elements are arranged in the cover (5) and on the type plate (3) in order to couple the type plate (3) with the cover (5) and center it in a position disassembled from the rotary setting shaft (37). 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Deckel (5) als Schieber ausgebildet ist, der an seiner Oberseite ein Griffstück (25) mit Griffmulden (27, 29), an seiner Unterseite die Kupplungseinrichtung (7) für die Typenscheibe (3) und an seinen Seiten Führungsflächen (31, 33) aufweist, mit welchen der Deckel (5) in den an einer Seite offenen Aufbewahrungsbehälter (1) und in die Aufnahmevorrichtung der Maschine einschiebbar- bzw. herausziehbar ist.2. Device according to claim 1, characterized in that the cover (5) is designed as a slide, on its top a handle (25) with recessed grips (27, 29), on its underside the coupling device (7) for the type plate ( 3) and on its sides has guide surfaces (31, 33) with which the lid (5) can be inserted or removed into the storage container (1) which is open on one side and into the receiving device of the machine. 3. Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß der Deckel (5) eine von unten offene Ausnehmung (13) mit federnden Stegen (15, 17) aufweist, welche in konzentrisch zu der Lagerbohrung (19) an der Typenscheibe (3) angeordneten Rastausnehmungen (23) einer Nabe (21) einrastbar sind.3. Device according to claim 1 or 2, characterized in that the cover (5) has a recess (13) open from below with resilient webs (15, 17) which in concentric with the bearing bore (19) on the type plate (3rd ) arranged recesses (23) of a hub (21) can be locked. 4. Einrichtung nach Anspruch 2 oder 3, daß der Deckel (5) zwei im Abstand zueinander angeordnete Wände (9, 11) aufweist, welche einen Einschubschlitz (105) für die Typenscheibe (5) bilden, wobei die eine Wand (9) an ihrem unteren Ende mit den federnden Stegen (15, 17) versehen ist.4. Device according to claim 2 or 3, that the cover (5) has two spaced walls (9, 11) which form an insertion slot (105) for the type plate (5), one wall (9) its lower end is provided with the resilient webs (15, 17). 5. Einrichtung nach Anspruch 4, dadurch gekennzeichnet 4, daß die der Schreibwalze (81) gegenüberliegende zweite Wand (11) des Deckels (5) eine nach unten offene Ausnehmung (73) aufweist, welche beim Einschieben des Deckels (5) in die Aufnahmevorrichtung der Maschine an einem als Begrenzungsanschlag dienenden und in Fluchtrichtung zu der Dreheinstellwelle (37) in deren Arbeitsstellung angeordneten Anschlagbolzen (71) zur Anlage kommt.5. Device according to claim 4, characterized 4 in that the platen (81) opposite the second wall (11) of the cover (5) has a downwardly open recess (73), which when inserting the cover (5) into the receiving device the machine comes to rest on a stop pin (71) which serves as a limit stop and is arranged in the direction of escape to the rotary adjusting shaft (37) in its working position. 6. Einrichtung nach Anspruch 1, dadurch gekennzeichnet , daß die Zentrierglieder einen in dem Deckel (5) angeordneten Zentriersteg (39) aufweisen, welcher beim Einschieben der Typenscheibe (3) in dem Einschubschlitz (105) des Deckels (5) in eine Ausnehmung (40) der Typenscheibe (3) formschlüssig eingreift.6. Device according to claim 1, characterized in that the centering members have a in the cover (5) arranged centering web (39) which when inserting the type plate (3) in the insertion slot (105) of the cover (5) in a recess ( 40) the type plate (3) engages in a form-fitting manner. 7. Einrichtung nach Anspruch 6, dadurch gekennzeichnet , daß die Ausnehmung (40) in einem Leersteg (41) angeordnet ist, welcher keine Typen (43) aufweist und bei welchem ein Teil des radial äußeren Endes des Umfangsabschnittes weggeschnitten ist.7. Device according to claim 6, characterized in that the recess (40) is arranged in an empty web (41) which has no types (43) and in which a part of the radially outer end of the peripheral portion is cut away. 8. Einrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet , daß - die Dreheinstellwelle (37) auf einem schwenkbaren Träger (65) angeordnet ist, welcher in eine von der Schreibwalze (81) entfernte Lage zum Lösen der Kupplung zwischen der Typenscheibe (3) und der Dreheinstellwelle (37) wegschwenkbar angeordnet ist, wobei die Kupplung zwischen der Typenscheibe (3) und der Dreheinstellwelle (37) durch eine Abstreifvorrichtung lösbar ist.8. Device according to one of the preceding claims, characterized in that - the rotary adjusting shaft (37) is arranged on a pivotable carrier (65) which, in a position remote from the platen roller (81), for releasing the coupling between the type plate (3) and the rotary adjusting shaft (37) is arranged so that it can be pivoted away, the coupling between the type plate (3) and the rotary adjusting shaft (37) being releasable by means of a stripping device. 9. Einrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Abstreifvorrichtung (107) einen halbkreisförmigen Steg (109) aufweist, der zwischen der Typenscheibe (3) in der Arbeitsstellung und dem schwenkbaren Träger (65) fest angeordnet ist.9. Device according to claim 8, characterized in that the stripping device (107) has a semicircular web (109) which is fixedly arranged between the type plate (3) in the working position and the pivotable carrier (65). 10. Einrichtung nach Anspruch 2, dadurch gekennzeichnet , daß die Führungen (77) für die Farbbandgabeln Führungsflächen (78) für den Deckel (5) aufweisen.10. The device according to claim 2, characterized in that the guides (77) for the ribbon forks have guide surfaces (78) for the cover (5).
EP19790104282 1978-12-22 1979-11-02 Changing device for a typedisc in a typewriter or similar business machine Expired EP0013699B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782855503 DE2855503C2 (en) 1978-12-22 1978-12-22 Device for changing a type disc in a typewriter or similar office machine
DE2855503 1978-12-22

Publications (2)

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EP0013699A1 true EP0013699A1 (en) 1980-08-06
EP0013699B1 EP0013699B1 (en) 1982-11-17

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Application Number Title Priority Date Filing Date
EP19790104282 Expired EP0013699B1 (en) 1978-12-22 1979-11-02 Changing device for a typedisc in a typewriter or similar business machine

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EP (1) EP0013699B1 (en)
DE (1) DE2855503C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2950071A1 (en) * 1979-12-13 1981-06-19 Olympia Werke Ag, 2940 Wilhelmshaven Mounting for typewriter disc - has retracted setting to allow type changing with special tool
DE8109006U1 (en) * 1981-03-27 1981-08-27 Triumph-Adler Aktiengesellschaft für Büro- und Informationstechnik, 8500 Nürnberg TYPE DISC AND AUXILIARY TOOL FOR USE IN WRITING O.AE. MACHINERY
IT1158917B (en) * 1983-03-30 1987-02-25 Olivetti & Co Spa SERIAL PRINTER
CH654526A5 (en) * 1983-11-25 1986-02-28 Caracteres Sa CHARACTER-HOLDER DISC FOR PRINTER MACHINE.
DE3446849A1 (en) * 1984-12-19 1986-06-26 Alfred Ransmayer & Albert Rodrian, 1000 Berlin Daisywheel arrangement

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE2803433A1 (en) * 1977-02-10 1978-08-17 Xerox Corp IMPACT PRINTER FOR USE WITH A PRINT WHEEL CARTRIDGE
US4124312A (en) * 1977-02-10 1978-11-07 Xerox Corporation Impact printer with print wheel cartridge

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Publication number Priority date Publication date Assignee Title
GB1299131A (en) * 1969-03-20 1972-12-06 Nortron Inc Selective recording unit
DE2639872C2 (en) * 1976-09-04 1978-09-21 Olympia Werke Ag, 2940 Wilhelmshaven Writing mechanism with a type disc

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
DE2803433A1 (en) * 1977-02-10 1978-08-17 Xerox Corp IMPACT PRINTER FOR USE WITH A PRINT WHEEL CARTRIDGE
US4124312A (en) * 1977-02-10 1978-11-07 Xerox Corporation Impact printer with print wheel cartridge

Also Published As

Publication number Publication date
DE2855503A1 (en) 1980-07-03
EP0013699B1 (en) 1982-11-17
DE2855503C2 (en) 1985-12-19

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