DE103492C

DE103492C -

Info

Publication number: DE103492C
Application number: DENDAT103492D
Authority: DE

Description

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KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die den Gegenstand vorliegender Erfindung bildende Papiereinzieh-Vorrichtung ist für Schreibmaschinen mit auf dem Papierschlitlen drehbar gelagertem Pnpierwnlzenrahmen bestimmt und zeichnet sich dadurch aus, dafs die die Papiereinziehwalzen in der Arbeitslage fest gegen die Papierwalze andrückenden Federn infolge Entlastung die Einziehwalzen schwächer gegen die Papierwalze drücken, um die Verschiebung des Papiers auf der Papierwalze ohne Gefahr der Beschädigung desselben zu bewerkstelligen , wenn der Rahmen in die Aul'kipplage gebracht wird. Dies geschieht durch Vermittclung eines auf der Schlittenwange gleitenden Führungsarmes, der eine Theildrehung der die Papiereinziehwalzen tragenden Welle und damit die Entspannung der auf dieser Welle angebrachten, die Lagerarme der Papiereinziehwalzen beeinflussenden Federn veranlafst.The subject of the present invention paper feeding device is for Typewriters with a paper roller frame rotatably mounted on the paper slide and is characterized by the fact that the paper feed rollers are fixed in the working position springs pressing against the paper roller weaken the draw-in rollers as a result of the relief Press against the platen to stop the paper from moving on the platen without risk of damaging the same when the frame is in the Aul'kipplage is brought. This is done by placing one on the carriage cheek sliding guide arm that allows a partial rotation of the paper feed rollers bearing shaft and thus the relaxation of the bearing arms attached to this shaft the springs influencing the paper feed rollers.

. Wird der Walzenrahmen in die Arbeitslage zurückgebracht, so wird durch das Zurückgleiten des Führungsarmes die Welle in ihre ursprüngliche Lage zurückgedreht und dadurch die Feder gespannt, so dafs die Papiereinziehwalzen wieder fest gegen die Papierwalzen andrücken. . If the roller frame is brought back into the working position, it will slide back of the guide arm rotated the shaft back to its original position and thereby the spring is tensioned so that the paper feed rollers press firmly against the paper rollers again.

Auf beiliegenden Zeichnungen ist:The attached drawings show:

Fig. 1 eine Hinteransicht der Papierwalze nebst Zubehör,Fig. 1 is a rear view of the paper roller together with accessories,

Fig. 2 eine Unteransicht des von hinten umgelegt angenommenen Kipprahmens mit der Papierwalze.Fig. 2 is a bottom view of the tilt frame assumed folded from behind with the Paper roller.

Fig. 3 und 4 sind Schnittdarstellungen der Papierwalze mit der Papiereinzieh-Vorrichtung; sie zeigen die parallel zur Papierwalze angebrachte Welle im Schnitt mit durch Federn becinflufsten losen Schwingarmen.3 and 4 are sectional views of the paper roller with the paper feeding device; they show the shaft attached parallel to the paper roller in a section with springs caused by loose swing arms.

Fig. 5 und 6 sind zwei Querschnittdarsteliungen des Walzenrahmens, der die Papierwalze nebst der Papiereinziehvorrichtung tra'gt und durch den linksseitigen Handhebel aus dex Arbeitslage gemäfs Fig. 5 in die Aufkipplage gema'fs Fig. 6 zu bewegen ist.Fig. 5 and 6 are two Querschnittdarsteliungen of the roll frame, the tra'gt the platen together with the Papiereinziehvorrichtung and to be moved by the left-hand lever of dex working position gemäfs Fig. 5 gema'fs in the Aufkipplage Fig. 6.

Mit dem einen oder jedem der beiden Enden einer Welle 61 ist ein Arm 70 verbunden, dessen unteres Ende zweckmiifsig mit einer Frictionsrolle 71 ausgestattet ist, die gegen die darunter liegende Querschiene des Schlittens anliegt. Sofern der Walzenrahmen in seiner normalen oder Druckstellung (Fig. 5) ist, befindet sich der Arm 70 in der hier ersichtlichen Lage, und zu dieser Zeit wird die Welle 61 derart gehalten, dafs deren Federn 68 ihre gröfste Kraft beim Andrücken der Einziehwalzen 65 gegen die Papierwalze W ausüben. Sobald " indessen der Rahmen behufs Durchsicht der Druckzeile emporgehoben wird (Fig. 6), gleitet der Arm 70 vorwärts auf der Querschiene 1 1 des Schlittens entlang und bewirkt dadurch eine Theildrehung der Welle 61. Die so veranlafste Drehung der Welle 61 in Beziehung zu ihren Lagern ist hinsichtlich der Richtung derart, dafs sich die Federn 68 theilweise entspannen. Hierdurch findet ein Drucknachlafs der Walzen 65 in Bezug auf die Anpressung gegen die Papierwalze VK statt, so dafs die von Hand erfolgende Verschiebung des Papiers auf der Papierwalze ohne Gefahr der Papierbescha'digung bewerkstelligt werden kann. Sobald der Rahmen wieder in seine Arbeitslage gebracht wird, drücken wiederumAn arm 70 is connected to one or each of the two ends of a shaft 61, the lower end of which is expediently equipped with a friction roller 71 which rests against the cross rail of the carriage below. If the roller frame is in its normal or pressure position (FIG. 5), the arm 70 is in the position shown here, and at this time the shaft 61 is held in such a way that its springs 68 exert their greatest force when they are pressed against the draw-in rollers 65 the platen W exercise. However, as soon as the frame is lifted up to see the print line (Fig. 6), the arm 70 slides forward on the cross rail 11 of the carriage and thereby causes a partial rotation of the shaft 61. The thus caused rotation of the shaft 61 in relation to theirs With regard to the direction, the bearing is such that the springs 68 relax in part. This results in a slackening of the pressure of the rollers 65 in relation to the pressure against the paper roller VK, so that the manual displacement of the paper on the paper roller without the risk of paper damage. As soon as the frame is brought back into its working position, press again

Claims

die Prcfsvvalzcn 65 the paper firmly against the Paper roller.

The uprights 3 1 are attached to the transverse rails 11 connecting the ends of the carriage rails 7 and 9 and contain the bearings for the trunnions 32 which protrude from the end brackets 33 of the frame which echoes the paper roll IF. The end brackets 33 of the frame are connected by means of front and rear rods 34 and 35 and are provided with ¹ bearings for the paper roll shaft tv . The pegs 32 of the frame are located at the rear beyond the paper roller shaft W; consequently, if the frame is rotated about these pins in the forward direction, the underside of the platen IF is exposed and the written line can therefore be seen. The end brackets 33 of the frame end at the front with Fiifsen 36, which lie on lugs 37 which protrude inward from the end slide rails 11 (FIGS. 5 and 6); this limits the downward movement of the frame and the paper roller. The ends of the oscillating shaft 38, which extends lengthwise in front of the paper roller and each end of which is connected to a hook 39, are supported in the foot-shaped sets 36. The lower hooking part of the latter is intended to engage a projection 37 in such a way that the frame is thereby held in its usual working position; the left-hand hook 39 of the shaft 38 is formed in one piece with a handle arm 40 reaching forward, and this handle arm enables the typist to release the hook 39 with a hand movement and to rotate the frame around pin 32 into the position according to FIG. 6 . The upper end of the hook 39 forms a hook 41 which engages over the rod 34, whereby the movement of the hook 39 with the handle 40 is limited.

The paper table 60 is provided with backward curved end flanges, and through this goes through the shaft 61, for which the bearings ö2 at the EndbUgcln 33 of the Frame (Fig. 5 and 6) are provided.

On the paper table 60 holes are provided through which the rollers 65 press against the paper on the paper roller VF. These paper pull-in rollers 65 shown in FIGS. 3 and 4 as well as FIGS. 1 and 2 are supported in bearings by levers 66 connected by means of bolts 67, which are attached to the shaft 61 as swing arms. The pressure of each roller 65 against the paper roller W is exerted by means of the double-wound helical spring 68 which surrounds the rod 61 and is fastened on the one hand to this rod and on the other hand to the cross bolt 6j or some other abutment.

Pa τ ε nt claim:

Paper feeding device for typewriters with rotatably mounted on the carriage Paper roller frame, characterized in that, in order to enable easy shifting of the paper on the With the frame raised, the paper roller is positioned on the pivot axis (61) of the paper feed rollers (65), influencing the latter Springs by a guide arm (70) attached to the rocker rod and sliding on the slide cheek Turning up the paper roller frame can be partially relaxed.

1 sheet of drawings.