AT137413B - Inner formwork (cast core) for the production of hollow bodies made of concrete, plaster and similar materials. - Google Patents

Inner formwork (cast core) for the production of hollow bodies made of concrete, plaster and similar materials.

Info

Publication number
AT137413B
AT137413B AT137413DA AT137413B AT 137413 B AT137413 B AT 137413B AT 137413D A AT137413D A AT 137413DA AT 137413 B AT137413 B AT 137413B
Authority
AT
Austria
Prior art keywords
concrete
plaster
production
hollow bodies
bodies made
Prior art date
Application number
Other languages
German (de)
Inventor
Karl Schmidt
Original Assignee
Karl Schmidt
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Karl Schmidt filed Critical Karl Schmidt
Application granted granted Critical
Publication of AT137413B publication Critical patent/AT137413B/en

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Landscapes

  • Moulds, Cores, Or Mandrels (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Innenschalung (Gusskern) zur Herstellung von Hohlkörpern aus Beton, Gips und ähnlichen Materialien. 



   Um in Körpern aus Beton, Gips od. dgl. Hohlräume zu schaffen, wurden bisher schwere, zusammen- setzbare Holz-oder Eisenkonstruktionen als Innenschalung verwendet. 



   Der Zweck der Erfindung ist, die Nachteile dieser Innenschalungen, wie hohe Anschaffungskosten, zeitraubendes Zusammensetzen und Beschädigung der Hohlkörper, beim Ausschalen zu vermeiden. Dies wird durch Verwendung von leichten, nicht steifen Materialien, wie Gewebe, Papier usw., als Hülle, welche durch Einführen und Aufpumpen einer Gummiblase die nötige Widerstandskraft erhält, erreicht. 



   Besonders geeignet ist dieses Verfahren für die Herstellung von Betonkörper mit geringem Quer- schnitt, z. B. Eisenbetonmasten. 



   Der Arbeitsvorgang ist folgender : Nach Einbringen des Eisengerippes in die Aussenschalung wird die Hülle a, welche die Gummiblase b enthält, an die Stelle des Hohlraumes gebracht, nach Aufpumpen der Gummiblase b auf den erforderlichen Druck in der richtigen Lage fixiert und mit Beton c umgeben.
Nach Erhärten des Betons c und Entleeren des Druckmittels kann die Gummiblase b aus der Hülle a leicht entfernt werden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Inner formwork (cast core) for the production of hollow bodies made of concrete, plaster and similar materials.



   In order to create cavities in bodies made of concrete, plaster of paris or the like, heavy, composite wooden or iron constructions have been used as internal formwork.



   The purpose of the invention is to avoid the disadvantages of these inner formworks, such as high acquisition costs, time-consuming assembly and damage to the hollow bodies, when stripping. This is achieved by using light, non-rigid materials such as fabric, paper, etc. as a cover, which is given the necessary resistance by inserting and inflating a rubber bladder.



   This process is particularly suitable for the production of concrete bodies with a small cross-section, e.g. B. Reinforced concrete poles.



   The process is as follows: After the iron framework has been placed in the outer formwork, the shell a, which contains the rubber bladder b, is brought to the place of the cavity, after the rubber bladder b has been inflated to the required pressure, it is fixed in the correct position and surrounded with concrete c.
After the concrete c has hardened and the pressure medium has been emptied, the rubber bladder b can easily be removed from the envelope a.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

Da die Hülle a sehr billig ist, belässt man sie im Innern des Mastes, wodurch eine Beschädigung beim Ausschalen ausgeschlossen ist. 0 PATENT-ANSPRUCH : Innenschalung (Gusskern) zur Herstellung von Hohlkörpern aus Beton, Gips und ähnlichen Materialien, dadurch gekennzeichnet, dass sie aus einer Hülle (a) aus Pappe, Stoff od. dgl. besteht, welche die erforderliche Widerstandsfähigkeit durch eine in die Hülle eingeführte, durch Aufpumpen auf den nötigen Druck gebrachte Gummiblase (b) erhält. EMI1.1 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. Since the shell a is very cheap, it is left inside the mast, which prevents damage when stripping. 0 PATENT CLAIM: Inner formwork (cast core) for the production of hollow bodies made of concrete, plaster and the like Materials, characterized in that they consist of a cover (a) made of cardboard, fabric or the like, which is given the required resistance by a rubber bladder (b) introduced into the cover and inflated to the required pressure. EMI1.1 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT137413D 1933-01-28 1933-01-28 Inner formwork (cast core) for the production of hollow bodies made of concrete, plaster and similar materials. AT137413B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT137413T 1933-01-28

Publications (1)

Publication Number Publication Date
AT137413B true AT137413B (en) 1934-05-11

Family

ID=3639693

Family Applications (1)

Application Number Title Priority Date Filing Date
AT137413D AT137413B (en) 1933-01-28 1933-01-28 Inner formwork (cast core) for the production of hollow bodies made of concrete, plaster and similar materials.

Country Status (1)

Country Link
AT (1) AT137413B (en)

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