GB519355A - Improvements in and relating to methods of hermetically sealing vitreous or ceramic vessels - Google Patents

Improvements in and relating to methods of hermetically sealing vitreous or ceramic vessels

Info

Publication number
GB519355A
GB519355A GB29913/38A GB2991338A GB519355A GB 519355 A GB519355 A GB 519355A GB 29913/38 A GB29913/38 A GB 29913/38A GB 2991338 A GB2991338 A GB 2991338A GB 519355 A GB519355 A GB 519355A
Authority
GB
United Kingdom
Prior art keywords
tube
enclosure
heating
pressure
relating
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
GB29913/38A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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
Priority to NL54277D priority Critical patent/NL54277C/xx
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB29913/38A priority patent/GB519355A/en
Priority to US263358A priority patent/US2169112A/en
Priority to DE1939P0079814 priority patent/DE701250C/en
Priority to FR860870D priority patent/FR860870A/en
Publication of GB519355A publication Critical patent/GB519355A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/40—Closing vessels

Abstract

519,355. Jointing glass. BRITISH THOMSONHOUSTON, CO., Ltd., SCOTT, W. J., and COWHIG, W. T. Oct. 15 1938, No. 29913 [Class 56] [Also in Groups XI and XL] A method of sealing glass or similar enclosures such as an incandescent lamp bulb 1 consists in applying heat to, so as to fuse, the internallyprojecting end 3 of a tube through which the pressure within the enclosure is adjusted prior to sealing. Heating may be effected electrically by a heater coil 4 fed separately from, or in parallel with, the filament 6, or by. an inductively-heated metal cap 14, Fig. 4, placed over the end of the tube 4 and movable so as to apply pressure thereto. The method is more particularly applicable to enclosures filled with gas under pressure such as discharge devices but is also applicable to evacuated vessels such as thermionic valves, vacuum flasks &c. According to the Provisional Specification, an externally-projecting tube on the enclosure is sealed off by heating within a bell-jar which is hermetically sealed and connected to a vacuum pump or gas supply system.
GB29913/38A 1938-10-15 1938-10-15 Improvements in and relating to methods of hermetically sealing vitreous or ceramic vessels Expired GB519355A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL54277D NL54277C (en) 1938-10-15
GB29913/38A GB519355A (en) 1938-10-15 1938-10-15 Improvements in and relating to methods of hermetically sealing vitreous or ceramic vessels
US263358A US2169112A (en) 1938-10-15 1939-03-22 Hermetically sealed vessel
DE1939P0079814 DE701250C (en) 1938-10-15 1939-09-28 Method for sealing electric incandescent lamps or discharge vessels filled with gas or steam under excess pressure
FR860870D FR860870A (en) 1938-10-15 1939-10-16 Improvements to the emptying and sealing processes of airtight containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29913/38A GB519355A (en) 1938-10-15 1938-10-15 Improvements in and relating to methods of hermetically sealing vitreous or ceramic vessels

Publications (1)

Publication Number Publication Date
GB519355A true GB519355A (en) 1940-03-21

Family

ID=10299234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29913/38A Expired GB519355A (en) 1938-10-15 1938-10-15 Improvements in and relating to methods of hermetically sealing vitreous or ceramic vessels

Country Status (5)

Country Link
US (1) US2169112A (en)
DE (1) DE701250C (en)
FR (1) FR860870A (en)
GB (1) GB519355A (en)
NL (1) NL54277C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473860A (en) * 1946-11-09 1949-06-21 Gen Electric Internal exhaust seal for electric lamps and similar devices
GB694672A (en) * 1951-02-23 1953-07-22 Hivac Ltd Improvements in or relating to electric incandescent lamps
US2664517A (en) * 1952-02-27 1953-12-29 Westinghouse Electric Corp Tipless quartz lamp
US2889670A (en) * 1954-04-21 1959-06-09 Nat Union Electric Corp Method of manufacturing an electron tube
US3351802A (en) * 1964-06-12 1967-11-07 Sylvania Electric Prod Single ended, quartz type incandescent lamp
TWM272222U (en) * 2005-02-14 2005-08-01 Hung Mian Light Source Co Ltd Power-saving bulb

Also Published As

Publication number Publication date
DE701250C (en) 1941-01-11
FR860870A (en) 1941-01-25
US2169112A (en) 1939-08-08
NL54277C (en)

Similar Documents

Publication Publication Date Title
GB518455A (en) Improvements in high-pressure metal-vapour electric discharge lamps
GB519355A (en) Improvements in and relating to methods of hermetically sealing vitreous or ceramic vessels
GB533107A (en) Improvements in and relating to methods of exhausting and sealing evacuated envelopes having a metal portion in which the seal is effected
GB560244A (en) Improvements in electric discharge lamps
GB605329A (en) Manufacture of cold electrode fluorescent discharge lamps
GB533106A (en) Improvements in and relating to methods of exhausting and sealing envelopes having a metal portion to which the seal is applied
US2674973A (en) Apparatus for coating incandescent
US2103028A (en) Electric conduction device
GB788655A (en) Improvements in electric discharge lamps
US2491880A (en) Method of gettering incandescent lamps or discharge tubes
US2810283A (en) Photoflash lamp
US2918763A (en) Method of making a pressure filled lamp
GB571709A (en) Improvements in or relating to thermionic devices
GB538855A (en) Improvements in or relating to high-pressure metal vapour electric discharge tubes
GB586129A (en) Improvements relating to photoflash lamps
GB484566A (en) Improvements in and relating to electric incandescent lamps
US3321662A (en) Electric lamp with tubular body and light transmitting closure having over-lapping flange seal
GB577738A (en) Improvements relating to sealing conductors through exhaust tubes of evacuated vitreous envelopes
GB514967A (en) Improvements in and relating to electric discharge devices
GB857108A (en) Improvements in or relating to vitreous seals
GB777140A (en) Improvements in or relating to the manufacture of electric discharge devices
GB559800A (en) Method of forming lead-in seals for enclosed electrical apparatus
US2219925A (en) Vacuum tube device
GB526612A (en) Improvements relating to the filling with a gas above atmospheric pressure of containers such as incandescent lamps and electron discharge apparatus
GB1255030A (en) Method of sealing vacuum vessels