DE147785C

DE147785C -

Info

Publication number: DE147785C
Application number: DENDAT147785D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die Erfindung betrifft eine Sicherung für Schrauben mit versenktem Kopf sowie für Schraubenmuttern.The invention relates to a fuse for screws with a countersunk head and for Nuts.

Die Sicherung besteht aus einer den Schraubenkopf umgebenden Hülse aus streckbarem Metall, deren Wandung sowohl in den Schlitz des Schraubenkopfes als auch in eine Aussparung in dem umgebenden Stoffe eingedrückt wird, wodurch eine feste Verbindung zwischen letzterem und der Schraube hergestellt wird.The fuse consists of an expandable sleeve surrounding the screw head Metal, the wall of which both in the slot of the screw head and in a Recess is pressed into the surrounding fabrics, creating a firm connection between the latter and the screw is established.

Dient die Sicherung für Schraubenmuttern, so wird in den Schraubenbolzen in der Längsachse eine kleine Kopf schraube eingeschraubt, deren in die zu sichernde Mutter versenkter Kopf in gleicher Weise mittels einer Hülse gesichert wird, wodurch eine feste Verbindung zwischen Mutter und Bolzen entsteht.If the lock is used for screw nuts, the screw bolts in the A small head screw is screwed into the longitudinal axis, its into the nut to be secured recessed head is secured in the same way by means of a sleeve, whereby a solid connection between nut and bolt is created.

Die Zeichnung zeigt die Sicherung, und zwar ist Fig. 1 ein Schnitt durch dieselbe und Fig. 2 eine Ansicht von oben. Fig. 3 zeigt die Sicherung als Muttersicherung gleichfalls im Schnitt.The drawing shows the fuse, namely Fig. 1 is a section through the same and Fig. 2 is a view from above. Fig. 3 also shows the fuse as a mother lock on average.

Die Figuren sind in großem Maßstabe gezeichnet. The figures are drawn on a large scale.

. Die beiden Platten A und B (Fig. 1 und 2) sind miteinander durch die Schraube C verbunden, deren Kopf D in der Platte B versenkt liegt.. The two plates A and B (FIGS. 1 and 2) are connected to one another by the screw C , the head D of which is countersunk in the plate B.

Auf der einen Seite des zylindrischen Loches, welches für die Aufnahme des Schraubenkopfes dient, ist eine Aussparung a in Gestalt eines umgekehrten halben Hohlkegels oder dergl. angebracht. In dieses Loch b ist ziemlich genau eine Hülse c aus dünnem, streckbarem Metall, beispielsweise aus Kupfer, eingepaßt. Der Boden dieser Hülse ist umgepreßt und mit einem Loch versehen, durch welches der Schrauben- 40' bolzen C hindurchgeht. Beim Einschrauben der Schraube legt sich der Kopf dicht an die Hülse c an. Darauf wird die zylindrische Wandung der Hülse ungefähr auf halber Höhe, von ihrem oberen Ende an gerechnet, an zwei Stellen ausgebaucht, und zwar zweckmäßig in Gestalt eines umgekehrten halben Hohlkegels. Die eine dieser Stellen liegt an dem einen Ende des Schlitzes e im Schraubenkopf, während die andere in die Aussparung a eingreift. Die Ausbauchungen sind in der Figur durch die punktierten Linien ff¹ bezeichnet. On one side of the cylindrical hole, which is used to receive the screw head, a recess a in the form of an inverted half hollow cone or the like is attached. In this hole b , a sleeve c made of thin, stretchable metal, for example made of copper, is fitted with a good degree of accuracy. The bottom of this sleeve is crimped and provided with a hole through which the screw 40 'bolt C passes. When the screw is screwed in, the head rests tightly against the sleeve c . Thereupon the cylindrical wall of the sleeve is bulged at two points approximately halfway up, calculated from its upper end, specifically in the form of an inverted half hollow cone. One of these points is at one end of the slot e in the screw head, while the other engages in the recess a. The bulges are indicated in the figure by the dotted lines ff ¹ .

Durch die Ausbauchung f ist die Hülse c fest mit dem Kopf d verbunden, welcher sich ohne die Hülse nunmehr nicht drehen kann; andrerseits ist die Hülse durch die in die Aussparung α eingreifende Ausbauchung f¹ mit dem umgebenden Körper verbunden und dadurch gegen Drehung gesichert.Through the bulge f , the sleeve c is firmly connected to the head d , which can no longer rotate without the sleeve; on the other hand, the sleeve is connected to the surrounding body by the bulge f ¹ engaging in the recess α and thus secured against rotation.

Um die Schraube wieder herausschrauben zu können, genügt es, der Hülse c ihre erste Gestalt annähernd wieder zu geben, sei es, indem man die Schraube mit Hilfe eines in eine Brustleier eingespannten Schraubenziehers herausschraubt, sei es, in-In order to be able to unscrew the screw again, it is sufficient to give the sleeve c approximately its first shape again, be it by unscrewing the screw with the help of a screwdriver clamped in a breast vault, be it in

Claims

using any other suitable tool, such as a chisel, awl or the like. These latter tools can also be used to bulge the sleeve in the same way. The bulging and the restoration of the original sleeve shape can be made much easier by making two slots in the sleeve c, ίο which run to about half the height from the upper end of the sleeve and of which one at one end of the Slot e lies in the screw head, while the other is located on the recess a, the position of which in relation to the slot e is variable depending on the required tightening of the screw C. The safety device can also be used as a nut safety device, as FIG. 3 shows. For this purpose, the nut B is provided on its upper surface with a recess e, which receives the countersunk head D of a screw, the bolt C in a threaded hole in the nut belonging to the bolt A, namely in its longitudinal axis be screwed in. It is then sufficient to insert a sleeve c between screw and nut and to make a recess α in the cylindrical wall of the recess located in the nut. The fuse described above can be used for all possible purposes and can be implemented in any shape, size and arrangement. Godfather ν τ-Α ν sr ruche:

1. Securing for screws with countersunk head, characterized in that that the screw head is surrounded by a sleeve made of stretchable material, the wall of which in several places in corresponding Recesses in the screw head and the surrounding body bulged to connect the sleeve to the, 45 screw head and to the surrounding body.

2. embodiment of the fuse for screws according to claim 1, characterized characterized in that the wall of the sleeve surrounding the screw head at one end of the screw head slot is pressed into this, at the other end into a corresponding recess in the surrounding body.

3. embodiment of the fuse for screws according to claim 1 as a nut lock, ■ characterized in that the nut to be secured has a recess for receiving the head of a small screw which goes in one in the axial direction in the screw bolt Drilled hole and screwed into the nut against rotation by an interposed flared sleeve is secured.

1 sheet of drawings.