GB782141A - Method and apparatus for producing hollow glass articles - Google Patents

Method and apparatus for producing hollow glass articles

Info

Publication number
GB782141A
GB782141A GB18003/55A GB1800355A GB782141A GB 782141 A GB782141 A GB 782141A GB 18003/55 A GB18003/55 A GB 18003/55A GB 1800355 A GB1800355 A GB 1800355A GB 782141 A GB782141 A GB 782141A
Authority
GB
United Kingdom
Prior art keywords
mandrel
tube
vacuum
domed
heated
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
Application number
GB18003/55A
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 GB782141A publication Critical patent/GB782141A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/07—Re-forming tubes or rods by blowing, e.g. for making electric bulbs
    • C03B23/073—Vacuum-blowing
    • C03B23/076—Shrinking the glass tube on to a mandrel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

782,141. Shaping glass articles. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R. T. June 21, 1955 [June 24, 1954], No. 18003/55. Class 56. A closed-ended glass tube 13, particularly an envelope of an electric discharge device, is shrunk to accurate internal diameter on a rotating mandrel 1 with means for maintaining a vacuum between the mandrel and the inside of the tube comprising a hollow central shaft 6 communicating with radial slots 4 in the domed head 2. The bottom end 11 of the tube is heated until it collapses on to and seals against the mandrel whereupon the heating is continued upwardly, with the vacuum being maintained, until the entire tube engages the mandrel up to its closed top end. The domed end 14 of the article is preferably heated and shaped on to the domed end of the mandrel before the bottom end of the tube is heated and the vacuum applied. The mandrel is internally cooled.
GB18003/55A 1954-06-24 1955-06-21 Method and apparatus for producing hollow glass articles Expired GB782141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU782141X 1954-06-24

Publications (1)

Publication Number Publication Date
GB782141A true GB782141A (en) 1957-09-04

Family

ID=10980293

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18003/55A Expired GB782141A (en) 1954-06-24 1955-06-21 Method and apparatus for producing hollow glass articles

Country Status (1)

Country Link
GB (1) GB782141A (en)

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