DE536478C - Device for reheating glass pieces - Google Patents
Device for reheating glass piecesInfo
- Publication number
- DE536478C DE536478C DE1930536478D DE536478DD DE536478C DE 536478 C DE536478 C DE 536478C DE 1930536478 D DE1930536478 D DE 1930536478D DE 536478D D DE536478D D DE 536478DD DE 536478 C DE536478 C DE 536478C
- Authority
- DE
- Germany
- Prior art keywords
- glass
- glass pieces
- pieces
- reheating
- reheating glass
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C17/00—Sofas; Couches; Beds
- A47C17/64—Travelling or camp beds
- A47C17/66—Travelling or camp beds having specially-adapted body-carrying surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nursing (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Description
Vorrichtung zum Wiedererwärmen von Glasstücken Beim Pressen von Linsen wird der Glasrohling zunächst auf einer Arbeitsplatte so weit erhitzt, daß er die zum Pressen notwendige Bildsamkeit annimmt. Lästig ist dabei, daß das erweichte Glasstück auf der glühenden Arbeitsplatte leicht anhaftet. Man kann diesen Übelstand vermeiden durch Anwendung eines Streumehls aus Schamotte o. dgl., muß aber dabei die Verschmutzung der Glasstücke mit in Kauf nehmen und deshalb dem Preßling für die spätere Bearbeitung in der Schleiferei eine größere Dicke erteilen, als dies sonst notwendig wäre.Device for reheating glass pieces when pressing lenses the glass blank is first heated on a countertop so far that it the takes on the malleability necessary for pressing. What is annoying is that it softened Piece of glass stuck to the glowing worktop. One can do this evil Avoid by using a dusting made from chamotte or the like, but must take the contamination of the glass pieces with and therefore the compact for the later processing in the grinding shop give a greater thickness than this otherwise would be necessary.
Es ist deshalb vorgeschlagen worden, um das Anhaften der Preßlinge ohne Verwendung von Streumitteln zu vermeiden, die ersteren während der Erwärmung mittels eines geeigneten Werkzeuges ständig in Bewegung zuhalten. Dieses Verfahren besitzt aber insofern noch einen Nachteil, als es dann, wenn eine große Anzahl Preßlinge zugleich erwärmt werden, wie es ja aus wirtschaftlichen Gründen meist geschieht, kaum möglich ist, all diese Preßlinge gleichzeitig in Bewegung zu halten. Es kommt dann natürlich leicht vor, daß das eine oder andere Glasstück in Folge ungenügender Bewegung dennoch auf der Unterlage festklebt. Die Erfindung schlägt deshalb vor, anstatt jeden Preßling für sich zu verschieben, der Heizplatte eine solche Bewegung zu erteilen, daß die auf ihr ruhenden Glasstücke sich dauernd relativ zu ihr bewegen.It has therefore been proposed to prevent the compacts from sticking without using scattering agents to avoid the former during heating using a suitable tool to keep it constantly in motion. This method but still has a disadvantage in that it is when a large number of compacts are heated at the same time, as it usually happens for economic reasons, it is hardly possible to keep all these compacts in motion at the same time. It is coming then of course it is easy to find that one or the other piece of glass is unsatisfactory as a result Movement still sticks to the surface. The invention therefore proposes instead of moving each compact for itself, the heating plate makes such a movement to grant that the pieces of glass resting on it move continuously relative to it.
Die praktische Durchführung des erfindungsgemäßen Vorschlages kann beispielsweise dadurch geschehen, daß man die Arbeitsplatte in Form eines hohlen Zylinders (Trommel) ausführt, der sich, während die Glasstücke erhitzt werden, dauernd um seine Achse dreht. Man kann aber auch die bisherige flache Form der Arbeitsplatte beibehalten und ihr eine schnelle oszillierende Bewegung erteilen, die bewirkt, daß die auf ihr liegenden erweichten Glasstücke sich ebenfalls hin und her bewegen.The practical implementation of the proposal according to the invention can for example done by making the countertop in the form of a hollow Cylinder (drum) executes, which, while the glass pieces are heated, continuously rotates around its axis. But you can also use the previous flat shape of the worktop and give it a rapid oscillating motion that causes that the softened pieces of glass lying on it also move back and forth.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE536478T | 1930-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE536478C true DE536478C (en) | 1931-10-23 |
Family
ID=6557322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1930536478D Expired DE536478C (en) | 1930-04-23 | 1930-04-23 | Device for reheating glass pieces |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE536478C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE741741C (en) * | 1941-06-10 | 1943-11-30 | Hirschberger Optische Werke G | Process for reheating pieces of optical glass in a preheating furnace |
-
1930
- 1930-04-23 DE DE1930536478D patent/DE536478C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE741741C (en) * | 1941-06-10 | 1943-11-30 | Hirschberger Optische Werke G | Process for reheating pieces of optical glass in a preheating furnace |
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