GB830762A - Method of manufacture of a lamp envelope - Google Patents

Method of manufacture of a lamp envelope

Info

Publication number
GB830762A
GB830762A GB3489257A GB3489257A GB830762A GB 830762 A GB830762 A GB 830762A GB 3489257 A GB3489257 A GB 3489257A GB 3489257 A GB3489257 A GB 3489257A GB 830762 A GB830762 A GB 830762A
Authority
GB
United Kingdom
Prior art keywords
cup
plate member
elongated
vitreous
envelope
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
GB3489257A
Inventor
Hermann Edward Krefft
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.)
Engelhard Industries Inc
Original Assignee
Engelhard Industries Inc
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 Engelhard Industries Inc filed Critical Engelhard Industries Inc
Priority to GB3489257A priority Critical patent/GB830762A/en
Publication of GB830762A publication Critical patent/GB830762A/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
    • C03B23/20—Uniting glass pieces by fusing without substantial reshaping
    • C03B23/207—Uniting glass rods, glass tubes, or hollow glassware

Landscapes

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

Abstract

830,762. Lamp envelopes. ENGELHARD INDUSTRIES Inc. Nov. 8, 1957, No. 34892/57. Class 56. A lamp envelope is produced by bonding an end of an elongated vitreous member to a vitreous plate member substantially centrally thereof, simultaneously heating at least said plate member and shaping said plate member into a cup-like member 1 with the elongated member extending in a direction opposite the opening of the cup-like member, reproducing said cup-like member to provide a complementary cup-like member 3, and bonding the rims 19, 20 to each other to form an envelope from which said elongated members may be removed as shown at lines 21 and 22, Fig. 7. The elongated member may be a tube 8 or a rod 15 which may be fused into an aperture 7, 17 substantially centrally of the plate member 6, 18 respectively, or to a plate member 24 which is then pierced to produce opening 26 Figs. 3, 7, 8 and 9. The plate member may be shaped into a cup-like member using tool 11 and mandrel 10, Fig. 4. Fig. 10 illustrates a non-spherical envelope composed of sections 30 and 31 having walls of varying thickness sealed at 32, having necks 33, 34 of different diameters. The vitreous material may be fused silica.
GB3489257A 1957-11-08 1957-11-08 Method of manufacture of a lamp envelope Expired GB830762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3489257A GB830762A (en) 1957-11-08 1957-11-08 Method of manufacture of a lamp envelope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3489257A GB830762A (en) 1957-11-08 1957-11-08 Method of manufacture of a lamp envelope

Publications (1)

Publication Number Publication Date
GB830762A true GB830762A (en) 1960-03-23

Family

ID=10371195

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3489257A Expired GB830762A (en) 1957-11-08 1957-11-08 Method of manufacture of a lamp envelope

Country Status (1)

Country Link
GB (1) GB830762A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588430A (en) * 1982-09-25 1986-05-13 Sony Corporation Method of manufacturing a glass product and resulting product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588430A (en) * 1982-09-25 1986-05-13 Sony Corporation Method of manufacturing a glass product and resulting product

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