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DE1205237B - Process for the production of a glass cathode ray tube blank - Google Patents

Process for the production of a glass cathode ray tube blank

Info

Publication number
DE1205237B
DE1205237B DEE13094A DEE0013094A DE1205237B DE 1205237 B DE1205237 B DE 1205237B DE E13094 A DEE13094 A DE E13094A DE E0013094 A DEE0013094 A DE E0013094A DE 1205237 B DE1205237 B DE 1205237B
Authority
DE
Germany
Prior art keywords
glass
ray tube
cathode ray
production
tube blank
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.)
Pending
Application number
DEE13094A
Other languages
German (de)
Inventor
Istvan Almasi
Istvan Chudik
Attila Dery
Henrik Fried
Janos Gyurikovits
Karoly Jarossy
Karoly Jermendy
Oedoen Kenczler
Ferenc Koeroesi
Janos Levai
Tibor Mihalovits
Bela Reiss
Jenoe Schliess
Alfred Sygall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Egyesuelt Izzolampa es Villamossagi Rt
Original Assignee
Egyesuelt Izzolampa es Villamossagi Rt
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 Egyesuelt Izzolampa es Villamossagi Rt filed Critical Egyesuelt Izzolampa es Villamossagi Rt
Publication of DE1205237B publication Critical patent/DE1205237B/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/04—Other methods of shaping glass by centrifuging
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/20—Uniting glass pieces by fusing without substantial reshaping
    • C03B23/207—Uniting glass rods, glass tubes, or hollow glassware
    • C03B23/217—Uniting glass rods, glass tubes, or hollow glassware for the production of cathode ray tubes or similarly shaped tubes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Description

Verfahren zur Herstellung eines gläsemen Kathodenstrahlröhren-Rohlings Die Erfindung betrifft ein Verfahren zur Herstellung eines gläsernen Kathodenstrahlröhren-Rohlings durch Verschmelzen eines trichterförmigen, nach dem Schleuderverfahren in einer Form hergestellten Glashohlkörpers mit einem Schirmteil.Process for the production of a glass cathode ray tube blank The invention relates to a method for producing a glass cathode ray tube blank by fusing a funnel-shaped, after the centrifugal process in one Mold made hollow glass body with a screen part.

Es ist bekannt, zum Herstellen hohler Formkörper, insbesondere solcher aus Glas, beispielsweise zum Herstellen von Kathodenstrahlröhren-Rohlingen das Schleuderverfahren anzuwenden. Bei diesem Verfahren ist es erforderlich, den erzeugten Glashohlkörper von seinem oberen durch die Herstellung bedingten ungleichförmigen Rand zu befreien. Das geschieht in der Weise, daß der Hohlkörper vor dem Herausnehmen aus der Schleuderform an seinem oberen Ende ringsherum eingeschnitten wird und danach der Rand thermisch abgesprengt wird.It is known to produce hollow molded bodies, in particular such made of glass, for example for the production of cathode ray tube blanks, the centrifugal process apply. In this process it is necessary to use the hollow glass body produced to free from its upper uneven edge caused by the manufacture. This is done in such a way that the hollow body before being removed from the centrifugal mold at its upper end is cut all around and then the edge thermally is blasted off.

Die Durchführung dieser notwendigen Maßnahmen ist jedoch kompliziert, und die verschiedenen Verfahrensschritte sind zeitraubend. Außerdem verursacht das auf das Einschneiden folgende thermische Absprengen einen verhältnismäßig großen Ausschuß.However, the implementation of these necessary measures is complicated, and the various process steps are time consuming. Besides, that causes thermal detonation following the incision is a relatively large one Committee.

Ziel der Erfindung ist, die geschilderten Nachteile zu vermeiden. Nach dem erfindungsgemäßen Verfahren wird ohne Zwischenschaltung weiterer Bearbeitungsgänge nach dem Schleudern des trichterförmigen Glashohlkörpers der Boden bzw. der Schirmteil mit dem Trichterrand unmittelbar verschmolzen. Diese Möglichkeit ist gegeben durch die Verwendung eines Glashohlkörpers, der in einer Form hergestellt ist, die den Glasüberschuß an eine von dem mit dem Schirmteil zu verschmelzenden Rand des Hohlkörpers entfernte Stelle des Innenmantels des Hohlkörpers leitet.The aim of the invention is to avoid the disadvantages outlined. According to the method according to the invention, further processing steps are not interposed after centrifuging the funnel-shaped hollow glass body, the bottom or the screen part fused directly with the funnel edge. This possibility is given by the use of a hollow glass body which is manufactured in a shape that conforms to the Excess glass at one of the edge of the hollow body to be fused with the screen part distant point of the inner jacket of the hollow body conducts.

Die Herstellung von Glashohlkörpem nach dem Schteuderverfahren in einer Form, die den Glasüberschuß vom Rand des Hohlkörpers fernhält, ist an sich bekannt und nicht Gegenstand der Erfindung.The production of hollow glass bodies using the powder extrusion process in a shape that keeps the excess glass away from the edge of the hollow body is in itself known and not the subject of the invention.

Claims (1)

Patentanspruch: Verfahren zur Herstellung eines gläsernen Kathodenstrahlröhrchen-Rohlings durch Verschmelzen eines trichterförmigen, nach dem Schleuderverfahren in einer Form hergestellten Glashohlkörpers mit einem Schirmteil, g e k e n n -z e i c h n e t d u r c h Verwendung eines Glashohlkörpers, der in einer Form hergestellt ist, die den Glasüberschuß an eine von dem mit dem Schirmteil zu verschmelzenden Rand des Hohlkörpers entfernte Stelle des Innenmantels des Hohlkörpers leitet. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 847 332; französische Patentschrift Nr. 424 525. Patent claim: A process for the manufacture of a glass cathode ray tube blank by fusing a funnel-shaped, produced by the centrifugal process in a mold hollow glass body with a shield part, g e k s n -zeichnet d urch using a glass hollow body, which is made in a mold, the excess glass to leads to a point of the inner jacket of the hollow body remote from the edge of the hollow body to be fused with the screen part. Documents considered: German Patent No. 847 332; French patent specification No. 424 525.
DEE13094A 1955-10-22 1956-10-17 Process for the production of a glass cathode ray tube blank Pending DE1205237B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU1205237X 1955-10-22

Publications (1)

Publication Number Publication Date
DE1205237B true DE1205237B (en) 1965-11-18

Family

ID=11003370

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE13094A Pending DE1205237B (en) 1955-10-22 1956-10-17 Process for the production of a glass cathode ray tube blank

Country Status (1)

Country Link
DE (1) DE1205237B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR424525A (en) * 1910-03-15 1911-05-16 Givelet Et Cie Soc Machine for making cylindrical or conical hollow glass objects
DE847332C (en) * 1949-08-01 1952-08-21 Corning Glass Works Method and device for shaping tubular glass bodies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR424525A (en) * 1910-03-15 1911-05-16 Givelet Et Cie Soc Machine for making cylindrical or conical hollow glass objects
DE847332C (en) * 1949-08-01 1952-08-21 Corning Glass Works Method and device for shaping tubular glass bodies

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