GB867635A - Improvements in "flash lamp" - Google Patents
Improvements in "flash lamp"Info
- Publication number
- GB867635A GB867635A GB14482/59A GB1448259A GB867635A GB 867635 A GB867635 A GB 867635A GB 14482/59 A GB14482/59 A GB 14482/59A GB 1448259 A GB1448259 A GB 1448259A GB 867635 A GB867635 A GB 867635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bulb
- zirconium
- electrode
- contact
- nitrocellulose
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
- F21K5/02—Light sources using charges of combustible material, e.g. illuminating flash devices ignited in a non-disrupting container, e.g. photo-flash bulb
Abstract
867,635. Photoflash lamps. GENERAL ELECTRIC CO. April 28, 1959 [June 3, 1958], No. 14482/59. Class 9(2). A photoflash lamp comprising a cylindrical glass bulb 1 containing a combustible filling has recessed ends to house electric contacts 6, 7 and so protect the ignition means from stray electrostatic charges. To make the bulb, the ends of a piece of glass tubing may be heated before pressing-in the cup-shaped contacts. Contact 7 may be secured to an electrode 4, while contact 6 has a central opening 12, through which priming 5 is applied to the electrode 4. The bulb is then filled with shredded foil or wire, before the creation of an oxygen atmosphere in the bulb. The electrode 3 attached to a sealing disc is then inserted in the contact 6 and soldered in position. The combustible filling may be aluminium, magnesium or zirconium and the primer is a porous mixture of a metallic powder such as zirconium, or zirconium mixed with magnesium, and an oxidizing agent such as potassium perchlorate, bonded by nitrocellulose. In an example 90% by weight zirconium and 10% potassium perchlorate is suspended in a solution of nitrocellulose in amylacetate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US739579A US3000200A (en) | 1958-06-03 | 1958-06-03 | Flash lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB867635A true GB867635A (en) | 1961-05-10 |
Family
ID=24972943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14482/59A Expired GB867635A (en) | 1958-06-03 | 1959-04-28 | Improvements in "flash lamp" |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3000200A (en) |
| AT (1) | AT209186B (en) |
| CH (1) | CH371959A (en) |
| DE (1) | DE1116058B (en) |
| GB (1) | GB867635A (en) |
| NL (1) | NL239766A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4309166A (en) * | 1977-12-23 | 1982-01-05 | U.S. Philips Corporation | Combustion flashbulb |
| GB2134097A (en) * | 1982-12-11 | 1984-08-08 | Diehl Gmbh & Co | Incendiary agent composition |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3304750A (en) * | 1965-06-29 | 1967-02-21 | Gen Electric | Photoflash lamp |
| US3515928A (en) * | 1966-07-15 | 1970-06-02 | Gen Electric | One-shot arc lamp with mass of vaporizable wire between electrodes |
| EP0186898A3 (en) * | 1984-12-31 | 1988-10-05 | GTE Products Corporation | Rapid flash lamp |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2060552A (en) * | 1932-08-25 | 1936-11-10 | Sirian Lamp Co | Discharge controlling means for discharge lamps |
| US2009094A (en) * | 1932-12-24 | 1935-07-23 | Gen Electric | Electric lamp or similar device |
| US2451557A (en) * | 1945-02-24 | 1948-10-19 | Eitel Mccullough Inc | Electron tube for high frequency |
| US2835787A (en) * | 1953-06-24 | 1958-05-20 | Eastman Kodak Co | Magazine-loading flash holder |
| US2771589A (en) * | 1954-12-14 | 1956-11-20 | Sylvania Electric Prod | End cap for fluorescent lamp |
-
1958
- 1958-06-03 US US739579A patent/US3000200A/en not_active Expired - Lifetime
-
1959
- 1959-04-28 GB GB14482/59A patent/GB867635A/en not_active Expired
- 1959-05-08 AT AT346159A patent/AT209186B/en active
- 1959-05-14 CH CH7323959A patent/CH371959A/en unknown
- 1959-06-02 NL NL239766A patent/NL239766A/xx unknown
- 1959-06-02 DE DEG27179A patent/DE1116058B/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4309166A (en) * | 1977-12-23 | 1982-01-05 | U.S. Philips Corporation | Combustion flashbulb |
| GB2134097A (en) * | 1982-12-11 | 1984-08-08 | Diehl Gmbh & Co | Incendiary agent composition |
Also Published As
| Publication number | Publication date |
|---|---|
| US3000200A (en) | 1961-09-19 |
| AT209186B (en) | 1960-05-25 |
| NL239766A (en) | 1964-01-27 |
| DE1116058B (en) | 1961-10-26 |
| CH371959A (en) | 1963-09-15 |
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