DE135211C

DE135211C - sense with exchangeable blade

Info

Publication number: DE135211C
Application number: DE1901135211D
Authority: DE
Inventors: Ewald Kalthaus
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-05-11
Filing date: 1901-05-11
Publication date: 1902-10-15

Description

Gegenstand der vorliegenden Erfindung ist eine Neuerung an Sensen, deren Schneidkante durch Schleifen ; mit . einem Schleifsteine oder einem Wetzstahle geschärft werden kann, also des so sehr zeitraubenden Dengeins nicht bedarf.The present invention relates to an innovation in scythes, the cutting edge of which by grinding; with . a whetstone or a sharpening steel can be sharpened, so does not need the so very time-consuming dengeins.

Sogen. Schleifsensen sind allerdings bekannt; sie sind aber bisher nur wenig zur Anwendung gekommen, weil sie durch das Schleifen bald zu viel an Breite ; verlieren und deshalb in kurzer Zeit völlig unbrauchbar werden.Soo. Grinding sensors are known, however; however, they have only rarely been used so far because they soon became too wide due to the grinding; lose and therefore in become completely unusable in a short time.

Von den bisher bekannt gewordenen Sensen mit auswechselbarem Blatt unterscheidet sich die vorliegende Erfindung dadurch, dafs das eigentliche Sensenblatt aus einem dünnen, fast nur papierdicken Stahlbleche besteht und an dem steifen Sensenrücken leicht lösbar derart befestigt ist, dafs es in starker Spannung gehalten und dadurch gegen Verbiegen gesichert ist. Durch die Versteifung und die Spannung wird der neue technische Erfolg erzielt, dafs das auswechselbare Blatt sehr dünn ausgeführt werden kann, was für das Schleifen von Vortheil ist.It differs from the previously known scythes with exchangeable blades the present invention in that the actual scythe blade consists of a thin, almost consists of only paper-thick steel sheets and is easily detachable from the stiff back of the scythe is attached so that it is kept in great tension and thereby secured against bending is. The new technical success is achieved through the stiffening and the tension the exchangeable blade can be made very thin, which is advantageous for grinding is.

Auf der Zeichnung ist eine solche Sense in drei Ausführungsbeispielen veranschaulicht. Dabei zeigt:Such a scythe is illustrated in three exemplary embodiments in the drawing. Included shows:

Fig. ι die Sense nach der ersten Ausführung in Draufsicht,Fig. Ι the scythe according to the first embodiment in plan view,

Fig. 2 das Sensenblatt undFig. 2 the scythe blade and

Fig. 3 den Sensenrücken, beide in Ansicht,Fig. 3 the back of the scythe, both in view,

Fig. 4 die Sense in einer unteren Ansicht und4 shows the scythe in a lower view and FIG

Fig. 5 bis 8 Querschnitte nach den Linien A-A, B-B, C-C und D-D der Fig. 1,Fig. 5 to 8 cross sections along the lines AA, BB, CC and DD of Fig. 1,

Fig. 9 eine Sense nach der zweiten Ausführung in Draufsicht,9 shows a scythe according to the second embodiment in plan view,

Fig. 10 das Harnende dieser Sense in Draufsicht und gröfserem Mafsstabe,10 shows the urine end of this scythe in plan view and on a larger scale,

Fig. 11 einen Querschnitt nach Linie E-E und11 shows a cross section along line EE and

Fig. 12 einen Längenschnitt nach F-F der Fig. 10;FIG. 12 shows a longitudinal section according to FF of FIG. 10;

Fig. 13 bis 15 zeigen Ansichten einer dritten Ausführung in den Fig. 10 bis 12 entsprechenden Darstellungen.13 to 15 show views of a third Execution in FIGS. 10 to 12 corresponding Representations.

Es ist α der Sensenrücken, welcher aus einem verhältnifsmäfsig dicken Blechstreifen mit der Sensenform entsprechend gekrümmten Begrenzungen besteht, nach dem einen Ende hin spitz zuläuft und am anderen breiten Ende den zur Befestigung am Schaft dienenden Theil b trägt. Die Aufsenkante c ist zur Versteifung des Ganzen nach oben abgebogen.It is α the back of the scythe, which consists of a relatively thick sheet metal strip with the scythe shape correspondingly curved boundaries, tapers to a point at one end and at the other broad end carries the part b which is used for fastening to the shaft. The outer edge c is bent upwards to stiffen the whole.

Das Sensenblatt d wird gebildet von einem dünnen, etwa papierdicken Stahlblechstreifen, welcher ebenfalls nach dem einen Ende hin spitz zuläuft, aber etwas stärkere Krümmung besitzt als der Sensenrücken a. Die Innenkante des Blattes bildet die Schneide, während die Aufsenkante durch eine auf der Unterseite aufgenietete, entsprechend gekrümmte Schiene e versteift ist.The scythe blade d is formed by a thin, approximately paper-thick sheet steel strip, which also tapers towards one end, but has a somewhat stronger curvature than the back of the scythe a. The inner edge of the sheet forms the cutting edge, while the outer edge is stiffened by a correspondingly curved rail e riveted to the underside.

An diesem Aufsenrande entlang ist auf dem Blatt d in geeigneten Abständen von einander eine Reihe von Stiften mit verbreitertem Kopfe Z/¹/²/⁸ · · -/⁷ angeordnet, während im breiteren Ende des Blattes sich ein in einem Längsschlitze desselben verschiebbarer Niet g befindet. Along this supervisor edge is on the sheet d at suitable intervals from each other a series of pins with widened heads Z / ^{^{^1/2/8}} * · - / ⁷ are arranged, whereas in the wider end of the sheet a thereof in a longitudinal slits displaceable rivet g is located.

Dementsprechend ist der Rückentheil α der Sense mit Schlitzen h h¹ ti². . . h¹ ausgestattet, von welchen der an der Spitze befindliche h Correspondingly, the back part α of the scythe with slots is hh ¹ ti ² . . . h ¹ , of which the headed h

Claims

towards the outer edge of the back, but the rest are open towards the inner edge of the same and where the approximately in the '. Center located slot / z ^{4 is} slightly less deep than the others. In the wider end of the back there is an open longitudinal lock i corresponding to the sliding rivet g.

Α for the assembly of the back and first sheet is d / h introduced the pin in the open on the guard side of the back slot, and then by rotating the two parts around the thus created joint, the other pins / ^{^{^1/2/3}} system. . ./ ⁷ in the associated slots h ¹ ft ² h ^s . . . h ¹ pushed in, whereupon the two parts are connected by pushing the rivet g into the back slot /.

However, this is only possible with strong tension on the leaf, and the latter is also kept in tension by this peculiar connection, since, as stated above, it is more curved than the back α and it is at both ends on one side (Fig. 5 and 8), in the middle but on the opposite side, is supported here by the pin / ⁴ resting against the edge of the shorter slot h * (FIG. 7) and is thereby prevented from making its; to resume their natural position.

This tension prevents the sheet, which is not very resistant due to its small thickness, from bending and prevents the two parts from loosening automatically from one another, since the tension of the sheet presses the sliding rivet g against the inner edge of the slot i and thereby secures it in its position will.

The two other versions differ from the one described in particular in that that with them the tension of the blade can be regulated as required.

In the embodiment according to FIGS. 9 to 12, while the arrangement is otherwise the same, instead of the displaceable rivet g, a fixed pin k is provided on the scythe blade d , which is inserted into a slot I made in the latter when the blade and spine are put together . The pin k extends into the path of the arm η of a double-armed lever η o, which is rotatably held at m on the back part α, so that by turning the latter the pin A is pressed more or less deep into the slot / and thereby the tension of the sheet can be increased or decreased.

To fix the lever η 0 in the desired position, the arm 0 of this lever η ο , which is resilient perpendicular to the plane of the sheet, has a pin p which engages in correspondingly arranged holes q of the leaf nest and thus prevents unintentional rotation.

In the third embodiment according to FIGS. 13 to 5, the lever η ο is replaced by a sliding wedge r , which is held with a slot r ¹ on a pin s located on the back part α in its longitudinal direction and at the same time rotatable.

This wedge r, which extends over the slot I and with its free end receives a support on a second pin t located on the back part, secures the pin k in the slot / and presses it more or less deeply into it depending on its position. as can be easily seen from FIG. 13, and thereby regulates the tension of the scythe blade d again.

In order to prevent an automatic adjustment of the wedge r, it is provided with cutouts 11 on the edge adjacent to the pin t , into which this pin t can be inserted. >

As can be seen, the sheet is so connected to the jerk part in all three cases, that it is in strong tension is maintained, and thus protected against bending, but also ¹ DAF both parties at any time lightweight and can be easily detached from each other.

Pat ε ν τ claim:

A scythe with an exchangeable blade, characterized in that the sheet (d), made of sheet steel and reinforced along the back by a rail, is detachably connected to the back (a) in such a way that it is kept taut and is thus protected against bending, for the purpose of being able to use sheets that are as thin as possible and suitable for grinding.

1 sheet of drawings.