GB2005657A - Making incandescent lamps - Google Patents
Making incandescent lampsInfo
- Publication number
- GB2005657A GB2005657A GB7833706A GB7833706A GB2005657A GB 2005657 A GB2005657 A GB 2005657A GB 7833706 A GB7833706 A GB 7833706A GB 7833706 A GB7833706 A GB 7833706A GB 2005657 A GB2005657 A GB 2005657A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- exhaust tube
- incandescent lamps
- pinch
- tube
- 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.)
- Granted
Links
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H01K3/12—Joining of mount or stem to vessel; Joining parts of the vessel, e.g. by butt sealing
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
In incandescent lamps having a pinched seal surrounding an exhaust tube, it is customary to heat the exhaust tube in situ in the surrounding glass envelope and then to pinch the softened envelope on to the tube. This involves complex heating arrangements. According to the method of invention the envelope (1) and exhaust tube (2) are heated separately by respective burner assemblies (7, 8) and are moved into their relative positions, and the pinch formed, when each has reached the required temperature. This provides a simpler and more rapid manufacturing operation. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772737681 DE2737681A1 (en) | 1977-08-20 | 1977-08-20 | METHOD OF MANUFACTURING ELECTRIC LIGHT BULBS WITH AT LEAST ONE PISTON CRUSH |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2005657A true GB2005657A (en) | 1979-04-25 |
GB2005657B GB2005657B (en) | 1982-02-10 |
Family
ID=6016950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7833706A Expired GB2005657B (en) | 1977-08-20 | 1978-08-17 | Method of manufacturing electric incandescent lamps |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5442876A (en) |
DE (1) | DE2737681A1 (en) |
FR (1) | FR2400770A1 (en) |
GB (1) | GB2005657B (en) |
IT (1) | IT1098152B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57163946A (en) * | 1981-03-31 | 1982-10-08 | Toshiba Corp | Manufacture of tubular bulb |
DE19621329C1 (en) * | 1996-05-28 | 1997-12-04 | Schott Glaswerke | Process for producing a lamp and lamp produced by the process |
DE19621330C1 (en) * | 1996-05-28 | 1998-01-02 | Schott Glaswerke | Process for producing a lamp and lamp produced by the process |
JP4857456B2 (en) * | 2000-05-29 | 2012-01-18 | 凸版印刷株式会社 | Vacuum deposition system |
-
1977
- 1977-08-20 DE DE19772737681 patent/DE2737681A1/en not_active Ceased
-
1978
- 1978-08-16 FR FR7823877A patent/FR2400770A1/en active Pending
- 1978-08-17 IT IT26805/78A patent/IT1098152B/en active
- 1978-08-17 GB GB7833706A patent/GB2005657B/en not_active Expired
- 1978-08-17 JP JP9959978A patent/JPS5442876A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
IT7826805A0 (en) | 1978-08-17 |
JPS5442876A (en) | 1979-04-05 |
IT1098152B (en) | 1985-09-07 |
FR2400770A1 (en) | 1979-03-16 |
GB2005657B (en) | 1982-02-10 |
DE2737681A1 (en) | 1979-02-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |