DE183672C

DE183672C -

Info

Publication number: DE183672C
Application number: DENDAT183672D
Authority: DE

Description

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KAISERLICHESIMPERIAL

PATENTAMT,PATENT OFFICE,

Gegenstand der Erfindung bildet eine Sehe Itvorrichtung für das Farbband an Rotationsmaschinen zur Herstellung schreibmaschim inähnlichen Druckes mit zwei in bekannter Weise im Typenzylinder angeordneten, das um den Zylinder herumgeschlagene Farbband tragenden Walzen.The subject of the invention is a viewing device for the ribbon on rotary machines for the production of typewriters in similar Print with two arranged in a known manner in the type cylinder, the rollers carrying ribbon wrapped around the cylinder.

Zu diesem Zweck ist die Achse des Typnnzylinders mit einem Exzenterzapfen verseh ;n,For this purpose, the axis of the type cylinder is provided with an eccentric pin; n,

ίο der ein mit einer geeigneten Vorrichtung zum Weiterschalten der Farbbandwalzen versehenes Exzenter trägt, das mit seinem Antriebser de von der jeweilig abgewickelten Farbbai idwalze auf die andere verstellt werden kann, wodurch ein selbsttätiges Überführen des Farbbandes von einer Walze zur anderen erfolgt.ίο the one with a suitable device for Continuing the ribbon rollers provided eccentric carries the de with its Antriebser can be adjusted from the respective unwound ink roller to the other, whereby an automatic transfer of the ribbon from one roller to the other takes place.

Zwischen den Farbband walzen, die in bekannter Weise je mit einem Schaltrad v;rsehen sind, ist an dem freien Ende des Exzenters eine doppelarmige Schaltklinke angeordnet, die vermittels eines an der eir en Zylinderseiten wand angelenkten Schwingarn ies abwechselnd mit dem einen oder dem anderen Schaltrade in Eingriff gebracht wird.Roll between the ribbon, which is known in Way are each provided with a ratchet wheel is at the free end of the eccentric a double-armed ratchet arranged, which by means of an on the egg Cylinder sides wall hinged swinging twine alternately with one or the other Ratchet is engaged.

Die Erfindung ist in der Zeichnung in einer beispielsweisen Ausführungsform dargestellt. The invention is shown in the drawing in an exemplary embodiment.

Fig. ι ist eine Ansicht des Formzylind;rs mit Führungsvorrichtung des Farbbandes n;.ch Fortnahme mehrerer Teile.Fig. Ι is a view of the forme cylinder; rs with guide device of the ribbon n; .ch removal of several parts.

Die linke Gestell wange ist fortgelassen und die rechte ist teilweise abgebrochen gezeichr et, um die innere Einrichtung sichtbar werc.en zu lassen.The left frame cheek is omitted and the right one is drawn partially broken off, to make the interior furnishings visible.

Fig. 2 ist ein lotrechter Querschnitt nach Linie 2-2 der Fig. 1 von links nach rechts gesehen.Fig. 2 is a vertical cross-section taken along line 2-2 of Fig. 1 from left to right seen.

Fig. 3 ist ein lotrechter Schnitt nach Linie 3-3 der Fig. 1 von rechts, nach links gesehen. FIG. 3 is a vertical section along line 3-3 of FIG. 1 viewed from the right to the left.

Fig. 4 ist ein Querschnitt durch das Ende des Formzylinders nach Linie 4-4 der Fig. 3.FIG. 4 is a cross section through the end of the forme cylinder along line 4-4 of FIG. 3.

Fig. 5 ist ein Querschnitt durch die die Walzen tragenden Zapfen nach Linie 6-6 der Fig· 3·Fig. 5 is a cross-section through the journals carrying the rollers taken along line 6-6 of FIG Fig 3

In den Zeichnungen stellt A eine der beiden Seitenwangen des Maschinengestelles dar. In dieser und in der anderen linken, nicht gezeichneten Gestellwange, liegt eine Welle b, auf welcher der Typenzylinder B sitzt. Auf diesem sitzen Längsleisten b^l mit Zwischenräumen , welche zur Aufnahme der Typen dienen. In einer Ausnehmung b² des Typenzylinders sind innerhalb des Zylinders zwei Rollen oder W⁷alzen*Z) und D¹ in bekannter Weise angeordnet, 'welche das Farbband C tragen; dieses wird von einer Rolle zur anderen um den Typenzylinder geführt, wie es in Fig. 2 veranschaulicht ist. Der Typenzylinder wird in geeigneter Weise gedreht Und bedruckt hierbei in bekannter Weise das zwischen ihm und einem Gegendruckglied hindurchgeführte Papier. An einer Stirnseite des Typenzylinders ist ein Zahnrad b^% angebracht, welches mit dem Typenzylinder zusammen umläuft.In the drawings, A represents one of the two side cheeks of the machine frame. In this and in the other left frame cheek (not shown) there is a shaft b on which the type cylinder B is seated. On this sit longitudinal strips b ^l with spaces which are used to accommodate the types. In a recess b ^{2 of} the type cylinder within the cylinder two rollers or W ⁷ alzen * Z) and D ¹ are arranged in a known manner, 'which carry the ribbon C; this is guided from one roller to the other around the type cylinder, as illustrated in FIG. 2. The type cylinder is rotated in a suitable manner and prints in a known manner the paper passed between it and a counter-pressure element. A gear wheel b ^{% is} attached to one end of the type cylinder and rotates together with the type cylinder.

Die beiden Farbbandwalzen D, D^l werden an einem Ende durch Tragzapfen H getragen, welche in der Seitenwand b^& des Typen-'The two ribbon rollers D, D ^l are carried at one end by support pins H , which in the side wall b ^{& of} the type '

Claims

Cylinder B. Springs d *, which sit at the other end of the rollers, secure the rollers in their position during operation; Both rollers can bezw by pressure to the left of the pin H. the machine can be lifted (Fig. 3 and 4). On the pin H sit ratchet wheels J and J1, each of which is brought into engagement with a pawl in order to wind up or unwind the ink ribbon on the roller D or D1 accordingly. The switching device for the ratchet wheels consists of an eccentric E, which sits on an eccentric pin A1 of the frame wall A that remains at rest; the latter is a pin eccentric to shaft b of the type cylinder. The eccentric carries a pin e near its end, on which a pawl e1 is arranged, which is brought into engagement alternately with one or the other ratchet by means of a swing arm F hinged to the cylinder side wall. The eccentric is arranged so that no movement is communicated to the ratchet wheel during most of the rotation of the type cylinder; but during the time during which the recess b2 passes on the printing substrate, the pawl eΎ engages in a tooth of the ratchet wheel that is switched on and rotates it inwards by one tooth. On the side wall Z> 5 of the type cylinder sits a swing arm F (Fig. 2 and 3), which has slots f. These sit loosely around the pins H of the dye rollers. This arm F is also provided with a slot / 1 through which the pin e extends. The swing arm F is able to guide the upper end of the eccentric arm and determines the path of movement of the pawl e1. A small piston G on the type drum, which is under spring pressure, is able to hold the swing arm F against unintentional displacement from one of the two end positions. He gets the pawl e1 in position to alternately operate the ratchet wheels. On the arm F sit two spring-loaded pawls f2, each of which is able to come into engagement with the associated ratchet wheel and prevent backward movement. As can be seen, the movement of the ribbon is reversed by the movement of the swing arm F from one of its positions to the other. This movement is automatically caused as soon as one of the reels is empty because the other role holds the end of the tape and BEZW during winding. Switching on the one roller, the tape is stretched so that the ratchet wheel that has been switched so far is pushed away by the associated pawl. This movement rotates the swing arm F so that the spring-loaded piston G jumps into the other cavity of the plate f3 attached to the upper end of the arm. This ensures the movement of the arm in the opposite position; this further changes the direction of winding, as indicated, and the movement continues in the other direction until the other roll is empty, whereupon the direction of movement of the ribbon is reversed again in the same way. Sponsorship τ claims:

1.Switching device for the ink ribbon on rotary machines for the production of typewriter-like printing with two rollers arranged in the type cylinder, carrying the ink ribbon wound around the cylinder, characterized by a stationary eccentric pin surrounding the axis of the type cylinder (A ¹ J, which moves one of the type cylinder, Eccentric (e) provided with a suitable device for indexing the ribbon rollers, which can be adjusted with its drive end from the respectively unwound ribbon roller to the full.

2. Switching device according to claim 1, characterized in that between the ribbon rollers (D, D ¹ J, each carrying a ratchet wheel (J respectively J ¹ J ) in a known manner, a double-armed pawl attached to the free end of the eccentric (E) (e ¹ ) is arranged, which by means of a swing arm (F) articulated on one cylinder side wall is brought into engagement alternately with one or the other ratchet.

3. Switching device according to claim 1 and 2, characterized in that the eccentric pin (A ^l ) forms a piece with the frame (A) , and that the pawl (e ^l ) bearing end of the eccentric (E) in an opening in the cylinder side wall plays.

4. Switching device according to claim 1 and 2, characterized in that the type cylinder carries a locking device influenced by spring to automatically hold the swing arm (F) in its two working positions.

1 sheet of drawings.