DE130962C - - Google Patents
Info
- Publication number
- DE130962C DE130962C DENDAT130962D DE130962DC DE130962C DE 130962 C DE130962 C DE 130962C DE NDAT130962 D DENDAT130962 D DE NDAT130962D DE 130962D C DE130962D C DE 130962DC DE 130962 C DE130962 C DE 130962C
- Authority
- DE
- Germany
- Prior art keywords
- pipes
- socket
- interior
- pipe
- cast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002184 metal Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
- B22D19/045—Casting in, on, or around objects which form part of the product for joining parts for joining tubes
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die Erfindung bezieht sich auf ein Giefsverbundverfahren und ist besonders zur Herstellung von Rohrverbindungen für Fahrradrahmen und ähnliche Zwecke geeignet.The invention relates to a cast composite process and is particular for manufacture of pipe connections for bicycle frames and similar purposes.
Bei den bisherigen Giefsverbundverfahren für Rohre wurde die Verbindung der letzteren meist in der Weise hergestellt, dafs der durch Verengung des inneren Muffen- oder Rohrtheiles bezw. durch Erweiterung des äufseren Muffen- oder Rohrtheiles gebildete Zwischenraum mit einem leicht schmelzbaren Metall ausgegossen wurde. Diese Verbindungsart zeigt den schwerwiegenden Nachtheil, dafs ein gegenseitiges Verdrehen oder Verschieben von Rohr und Muffe nur durch den Reibungswiderstand zwischen diesen Theilen und daher nicht mit genügender Sicherheit verhindert wird.In the previous Giefsverbundverfahren for pipes, the connection of the latter usually produced in such a way that it is produced by narrowing the inner sleeve or pipe part respectively Gap formed by widening the outer socket or pipe part was poured with an easily fusible metal. This type of connection shows the serious disadvantage that a mutual twisting or displacement of the pipe and socket only by the frictional resistance between these parts and therefore not with it sufficient security is prevented.
Nach vorliegender Erfindung soll dieser Uebelstand dadurch vermieden werden, dafs eine feste und unverrückbare Verbindung der Rohre durch Umgiefsen derselben mit einer Muffe hergestellt wird. Zu diesem Zwecke sind die mit einander zu verbindenden Rohrtheile an den Enden mit einer beliebigen Anzahl unterschnittener, z. B. im Querschnitt schwalbenschwanzförmiger Löcher versehen, in die das Metall beim Angiefsen der Muffe eindringt, so dafs hierdurch unter Zuhülfenahme geeigneter Gufskerne Ansätze gebildet werden, welche die Muffe mit den Rohren fest verbinden, ohne den Innenraum der letzteren auszufüllen oder zu versperren.According to the present invention, this disadvantage is to be avoided by the fact that a firm and immovable connection of the pipes by encapsulating them with a Socket is made. For this purpose the pipe parts to be connected are at the ends with any number of undercut, e.g. B. in cross section dovetail-shaped holes, into which the metal penetrates when the socket is started, so that with the help of suitable cast cores, approaches are formed, which firmly connect the socket to the pipes without filling the interior of the latter or to block.
. Beiliegende Zeichnung veranschaulicht eine nach der Erfindung hergestellte Rohrverbindung, bei welcher die beiden Rohre A und B durch die angegossene Muffe C mit einander verbunden sind.. The accompanying drawing illustrates a pipe connection produced according to the invention, in which the two pipes A and B are connected to one another by the cast sleeve C.
Die Rohre A und B sind an ihren Enden mit Löchern D versehen, deren innerer Durchmesser gröfser ist als der äufsere, so dafs beim Angufs der Muffe C das in die Löcher einfliefsende Metall Ansätze E bildet, deren inneres Ende E1 breiter ist, als der nach aufsen gelegene Theil.The ends of the pipes A and B are provided with holes D , the inner diameter of which is larger than the outer one, so that when the sleeve C is started, the metal that flows into the holes forms extensions E , the inner end E 1 of which is wider than the outer one outward part.
Vor dem Angiefsen der Muffe C wird in das Innere der Rohre A und B natürlich ein cylindrischer Kern eingefügt, welcher das Giefsmetall hindert, in den Innenraum der Rohre zu fliefsen und diesen mehr oder weniger auszufüllen. Before the socket C is cast on, a cylindrical core is of course inserted into the interior of the pipes A and B , which prevents the cast metal from flowing into the interior of the pipes and more or less filling it up.
Die nach vorliegendem Verfahren hergestellten Rohrverbindungen sind besonders für Fahrradtheile verwendbar, bei denen durch das eine Rohr ein anderer Theil, z. B. die Lenkstange oder Sattelstütze hindurchgeht, weil durch die beschriebene Verbindungsweise der Muffe mit den Rohren der Innenraum der letzteren nicht versperrt wird.The pipe connections produced by the present process are particularly suitable for Bicycle parts can be used in which another part, e.g. B. the Handlebar or seat post goes through because of the connection method described Sleeve with the pipes the interior of the latter is not blocked.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE130962C true DE130962C (en) |
Family
ID=399324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT130962D Active DE130962C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE130962C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742527C (en) * | 1942-01-25 | 1943-12-06 | Armaturenfabrik Leipzig Richar | Process for the manufacture of tap fittings |
| DE10257263A1 (en) * | 2002-12-07 | 2004-06-24 | Volkswagen Ag | Process for connecting light metal profiles, e.g. frame elements, on their end sides comprises pre-treating the end regions before casting so that an interlocking joint between the casting material and the profiles to be joined is produced |
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0
- DE DENDAT130962D patent/DE130962C/de active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742527C (en) * | 1942-01-25 | 1943-12-06 | Armaturenfabrik Leipzig Richar | Process for the manufacture of tap fittings |
| DE10257263A1 (en) * | 2002-12-07 | 2004-06-24 | Volkswagen Ag | Process for connecting light metal profiles, e.g. frame elements, on their end sides comprises pre-treating the end regions before casting so that an interlocking joint between the casting material and the profiles to be joined is produced |
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