DE136138C - - Google Patents

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Publication number
DE136138C
DE136138C DENDAT136138D DE136138DA DE136138C DE 136138 C DE136138 C DE 136138C DE NDAT136138 D DENDAT136138 D DE NDAT136138D DE 136138D A DE136138D A DE 136138DA DE 136138 C DE136138 C DE 136138C
Authority
DE
Germany
Prior art keywords
model
models
parts
shape
solidified
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
Application number
DENDAT136138D
Other languages
German (de)
Publication of DE136138C publication Critical patent/DE136138C/de
Active legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C7/00Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/005Adjustable, sectional, expandable or flexible patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Claims (1)

?HES? HES PATENTAMT.PATENT OFFICE. Vr 136138 KLASSE 31 c. Vr 136138 CLASS 31 c. Die seitherigen Verfahren, zur Herstellung von Formen für die Kunstgiefserei Modelle aus elastischem Stoff und zwar solche aus Gelatine mit einem Zusatz von Buchdruckwalzenmasse zu verwenden, haben sich in der Praxis als unbrauchbar erwiesen insofern, als solche Modelle während der Einformung ihre Gestalt veränderten und vor allem bei Herausnahme aus der fest gewordenen Form beschädigt und ganze Theile, beispielsweise vorstehende Gliedmafsen, abgerissen wurden. Diese in der Form zurückgebliebenen Theile muisten dann mit Hilfe von heifsem Wasser aufgelöst und aus der Form entfernt werden, was sehr umständlich und zeitraubend war. Ein wesentlicher Nachtheil war ferner der, dafs ein solches Modell nur einmal verwendet werden konnte und daher für jede weitere Form ein neues Modell angefertigt werden mufste, was ebenfalls sehr umständlich war und viel Geschick erforderte.The previous process for the production of molds for art foundry models made of elastic material, namely those made of gelatine with the addition of letterpress roller mass have proven useless in practice in that such models changed their shape during the molding and especially when they were removed from the solidified form and whole parts, for example protruding ones, damaged Limbs, have been torn off. These parts, which have remained in shape, must then dissolved with the help of hot water and removed from the mold, which is very good Was cumbersome and time consuming. Another major disadvantage was that such a thing The model could only be used once and therefore a new one for each additional shape Model had to be made, which was also very cumbersome and a lot of skill required. Nach dem vorliegenden Verfahren nun werden die Gufsformen mittels theilweise hohler elastischer Modelle hergestellt, d. h. das dem Original genau entsprechende Modell besteht aus Kautschuk und ist im Inneren, soweit es die Abmessungen zulassen, hohl, so dafs bei der Herausnahme dieses Modelles aus der fest gewordenen Form alle Theile desselben bequem ausweichen können, eine Beschädigung der fertigen Form sowohl, als auch besonders eine Verletzung oder gar Abreifsen einzelner Theile des Modelles daher ganz ausgeschlossen ist. Letzteres kann aus diesem Grunde für eine unbeschränkte Anzahl Formen verwendet werden. Versuche haben gezeigt, dafs Gegenstände, deren Form mit Hilfe solcher Modelle hergestellt war, vollständig genau dem Modell entsprechen, woraus hervorgeht, dafs eine Veränderung des Modells während der Einformung absolut nicht stattfindet und auch die Herausnahme des Modells aus der fest gewordenen Form ohne Schwierigkeit zu bewerkstelligen ist.According to the present process, the casting molds become more elastic by means of partially hollow ones Models made, d. H. the model that corresponds exactly to the original consists of Rubber and is hollow inside, as far as the dimensions allow, so that in the case of the Removal of this model from the solidified form all parts of it comfortably can evade, damage to the finished form both, and especially one Injury or even wear of individual parts of the model is therefore completely excluded. For this reason, the latter can be used for an unlimited number of forms. Experiments have shown that objects, their shape, can be produced with the help of such models correspond exactly to the model, from which it follows that a change of the model absolutely does not take place during the molding and also the removal of the model from the solidified form can be achieved without difficulty. Pate nt-A ν Spruch:Godfather nt-A ν saying: Herstellung von Formen für Kunstgufs mittels elastischer Modelle, dadurch gekennzeichnet, dafs das dem Original genau nachgebildete Positivmodell aus Kautschuk oder dergl. besteht und im Inneren, soweit es angängig ist, hohl ist, so dafs bei Herausnahme des Modells aus dem fest gewordenen Formmaterial alle etwa vorspringenden Theile bequem ausweichen können und eine Verletzung derselben nicht stattfindet.Production of molds for artificial castings by means of elastic models, characterized in that that the positive model exactly copied from the original is made of rubber or the like and inside, as far as it is accessible, is hollow, so that when the model is removed, it is out all protruding parts comfortably evade the solidified molding material and a violation of the same does not take place.
DENDAT136138D Active DE136138C (en)

Publications (1)

Publication Number Publication Date
DE136138C true DE136138C (en)

Family

ID=404113

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DE (1) DE136138C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997017150A2 (en) * 1995-11-07 1997-05-15 Firth Vickers Centrispinning Ltd. Making a metal shape by casting
GB2322585A (en) * 1995-11-07 1998-09-02 Firth Vickers Centrispinning L Making a metal shape by casting

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997017150A2 (en) * 1995-11-07 1997-05-15 Firth Vickers Centrispinning Ltd. Making a metal shape by casting
WO1997017150A3 (en) * 1995-11-07 1997-07-03 Firth Vickers Centrispinning L Making a metal shape by casting
GB2322585A (en) * 1995-11-07 1998-09-02 Firth Vickers Centrispinning L Making a metal shape by casting
GB2322585B (en) * 1995-11-07 1999-09-29 Firth Vickers Centrispinning L Making a metal shape by casting
US6116327A (en) * 1995-11-07 2000-09-12 F.V.C. Limited Making a metal shape by casting

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