DE531386C

DE531386C - Knuepferschnabel

Info

Publication number: DE531386C
Application number: DEM110367D
Authority: DE
Original assignee: HERMANN RAUSSENDORF FA
Current assignee: HERMANN RAUSSENDORF FA
Priority date: 1929-06-02
Filing date: 1929-06-02
Publication date: 1931-08-12

Description

Die Erfindung bezweckt durch eine neue Formgebung des Knüpferschnabels für Bindemäher u. dg¹!. Landmaschinen die Nachteile der bisher bekannten Knüpferschnäbel zu beseitigen, die auf dem nahen Zusammenliegen bzw. Zusammenrücken von Einklemmungsstelle und Umschnürungsstelle und auf dem nahen Zusammenliegen von Einklemmungsstelle und Zungendrehpunkt beruhen.The invention aims with a new design of the knotting bill for binding mower u. Dg ^1!. Agricultural machinery to eliminate the disadvantages of the previously known knotter beaks, which are based on the close together or moving closer together of the pinch point and constriction point and on the close together of the pinched point and tongue pivot point.

Bei dem üblichen Knüpferschnabel (vgl. Abb. 5) liegt die Zungendrehachse ausladend hinter der Knüpferachse, und die Stelle, an welcher der Schnabel von den Fäden umschlungen wird, unterhalb der Knüpferachse.In the usual knotter's bill (see Fig. 5), the axis of rotation of the tongue is protruding behind the knotter axis, and the place where the beak is entwined by the threads is below the knotter axis.

Da der Schnabel eine ziemliche Länge hat, würde an sich die Einklemmung der beiden im Querschnitt erscheinenden Fadenlagen auch weit vorn geschehen können, so daß Klemmstelle und Umschnürungsstelle in erwünsehter Weise weit auseinander liegen könnten, d. h. die Klemmstelle weit weg von der Drehachse der Klemmzunge. Die Erfahrung hat indessen gelehrt, daß die einzuklemmenden Fäden in der Regel weit zurück rutschen (vgl. Abb. 5). Das nahe Zusammenliegen von Klemmsteile und Umschnürungsstelle hat aber den Nachteil, daß der Knüpfer zwischen beiden Stellen keinen nennenswerten Fadenvorrat hält, aus dem bei seiner Drehung, also beim Abziehen der Fadenschlinge, Bindegarn nachgezogen werden könnte. Der bei der Wirkungsweise des Knüpfers unvermeidliche Nachzugsbedarf muß also anderweit gedeckt werden, entweder durch stärkeres Zusammenziehen der vom Faden umschlungenen Garbe oder durch Nachziehen des Fadens aus dem Fadenhalter. Beides ist mißlich, denn eine straff umschnürte Garbe gibt nichts her, und das Nachziehen aus dem Fadenhalter setzt eine bestimmte Regelung der Einklemmung im Fadenhalter voraus, welche schwer zu treffen ist. Bei allzu loser Einklemmung im Fadenhalter mißlingt die Knotenbildung, während bei allzu fester Einklemmung der Faden reißt. Der zweite Nachteil des bekannten Knüpferschnabels, welcher in der allzu nahen Lage der Einklemmungsstelle der Fäden- zur Zungendrehachse besteht, äußert sich darin, daß Unterschiede in der Fadendicke oder der gegenseitigen Lage der beiden Fäden erheblich verschiedene Winkelstellungen zwischen Unterlippe und Zunge herbeiführen, so daß bei großer Fadenstärke oder Übereinanderliegen beider Fäden der Schnabel in der Schlußstellung sich aufsperrt und das Abziehen des Knüpfers vom Schnabel in Frage gestellt wird. Mit diesem Übelstand ist aber um so mehr zu rechnen, als zum Binden zumeist minderwertige, vielfach vom Landwirt selbst roh hergestellte Fäden von recht ungleichmäßiger Dicke verwendet werden.Since the beak is quite a length, the entrapment of the two would in itself The thread layers appearing in the cross-section can also occur far in front, so that the clamping point and constriction point are more desirable Way could be far apart, d. H. the terminal point far away from the axis of rotation of the clamping tongue. Experience has, however, shown that those to be trapped The threads usually slip far back (see Fig. 5). The close proximity of the clamping parts and the constriction point but has the disadvantage that the knotter between the two places is not worth mentioning Holds a supply of thread from which when it is turned, i.e. when the thread loop is pulled off, Twine could be tightened. The one that is inevitable when the knotter works The need for traction must therefore be met in some other way, either by tightening the threads around which the thread is wrapped Sheaf or by pulling the thread out of the thread holder. Both is annoying, because a tightly tied sheaf gives nothing, and pulling out of it The thread holder requires a certain regulation of the entrapment in the thread holder, which is hard to hit. If the jamming in the thread holder is too loose, it will fail Knot formation, while the thread breaks if it is too tightly clamped. The second disadvantage of the well-known knotter beak, which is in the all too close position of the pinch point the thread to the tongue axis of rotation is expressed in the fact that differences in the thread thickness or the mutual position of the two threads are considerably different Bring angular positions between the lower lip and tongue so that with a large thread thickness or if both threads lie one on top of the other, the beak unlocks itself in the final position and the peeling of the knotter from the beak is in question. With this Evil condition is all the more to be expected as for binding mostly inferior, often Rough threads made by the farmer himself and have a rather uneven thickness are used will.

Es sind auch Knüpfer bekannt, deren Unterlippe mit steil ansteigenden Rändern versehen ist, dabei liegt aber die Drehachse der Klemmzunge vor der Knoterachse,There are also knotters known whose lower lip has steeply rising edges is provided, but the axis of rotation of the clamping tongue lies in front of the knotter axis,

Claims

531886

The clamping point and the constriction point or the clamping point and the tongue pivot point are therefore located particularly close together.

Using the last-mentioned design of the lower lip on knotters from the previous one described type results according to the invention a knotter with a channel-shaped lower lip and protruding behind the knotter axis lying clamping tongue axis of rotation, which ίο indicates that the edges of the lower lip are behind the on the front part the beak restricted 'clamping point up to about the height of the back of the in the clamping position located tongue rise steeply, while the back of the tongue lowers towards the constriction point.

The drawing represents an embodiment of the subject matter of the invention, namely demonstrate:

Fig. Ι the empty beak in the closed state,

Fig. 2 and 3 cross-sections along lines 2-2 and 3-3 of Fig. 1, Fig. 4 the closed beak during the knotting process,

Fig. 5 a common type of knotter's bill.

The subject of the invention is designed while maintaining the known beak shape according to Fig. 5 in view of the position of the tongue axis of rotation d and the constriction point so that the edges of the channel-shaped lower lip b rise steeply behind the clamping point to about the back height of the upper beak c in the clamping position. As a result, the clamping point is relocated to the foremost part of the beak, preventing the layers of thread to be clamped from slipping into the depth of the beak (as in Fig. 5). In this way, on the one hand, in the thread stretches between the clamping point and the constriction point, the desirable thread betrayal is created for pulling the thread, and on the other hand, the aforementioned locking of the beak is avoided in the case of thick threads or threads lying one on top of the other at the clamping point, because differences can occur with the large distance between the clamping point and the clamping tongue axis of rotation d do not make a significant difference in the angular position between the lower lip and the clamping tongue c in the thread thickness.

According to the invention, the back of the clamping tongue c lowers again somewhat behind the steep rise of the edges of the lower lip b , so that only the profile of the lower lip at the constriction point is considered as a support for the tying threads. In the cross-sections shown in Fig. 2 and 3, the decrease in the circumference of the beak profile towards the tip of the beak is indicated by a dashed representation of a looping thread.

Ρλ

'κυ cn:'κυ cn:

Knotters' bill with a groove-shaped lower lip and behind the knotter's axis lying tongue axis of rotation for binding mowers, straw binders and straw balers, characterized in that the edges of the Lower lip · (&) behind that restricted to the front part of the beak Clamping stalls up to about the height of the back of the tongue in the clamped position (c) rise steeply as the back of the tongue becomes the constriction point lowers.

For this purpose ι sheet of drawings