GB541699A - Improvements in electric incandescent flash lamps - Google Patents
Improvements in electric incandescent flash lampsInfo
- Publication number
- GB541699A GB541699A GB10075/40A GB1007540A GB541699A GB 541699 A GB541699 A GB 541699A GB 10075/40 A GB10075/40 A GB 10075/40A GB 1007540 A GB1007540 A GB 1007540A GB 541699 A GB541699 A GB 541699A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grams
- powder
- magnesium
- june
- magnesium powder
- 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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 229910001487 potassium perchlorate Inorganic materials 0.000 abstract 2
- 229910000861 Mg alloy Inorganic materials 0.000 abstract 1
- 239000000020 Nitrocellulose Substances 0.000 abstract 1
- 229940072049 amyl acetate Drugs 0.000 abstract 1
- PGMYKACGEOXYJE-UHFFFAOYSA-N anhydrous amyl acetate Natural products CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 abstract 1
- 239000008240 homogeneous mixture Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229920001220 nitrocellulos Polymers 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S149/00—Explosive and thermic compositions or charges
- Y10S149/11—Particle size of a component
- Y10S149/114—Inorganic fuel
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Powder Metallurgy (AREA)
- Resistance Heating (AREA)
Abstract
541,699. Photographic flash-lamps. BRITISH THOMSON-HOUSTON CO., Ltd. June 10, 1940, No. 10075. Convention date, June 9, 1939. Drawings to Specification. [Class 9 (ii)] In a. gas-filled electric flash-lamp, preferably using pure aluminium in the form of fine wire or ribbon as the combustible material, the tungsten or like heating filament is enclosed in a thin coating of magnesium powder and potassium perchlorate mixed with a suitable binder. Zirconium powder may also be embodied, a particular composition described being as follows:- 4 ... 5 per cent. nitrocellulose solution. 5ccs.; potassium perchlorate, 5 grams; zirconium powder, 6.5 grams; magnesium powder 1 to 4 grams, preferably 2.4 grams. Amyl acetate may be used to assist in obtaining a homogeneous mixture and to thin out the same to the desired consistency, into which the filament and adjacent portions of the leading-in wires are dipped. It is also stated that the magnesium powder may be applied as a final coating or after-dip; and aluminiums-magnesium alloys may replace pure aluminium as the combustible material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US262209A US2285125A (en) | 1939-03-16 | 1939-03-16 | Flash lamp |
| US278288A US2280598A (en) | 1939-03-16 | 1939-06-09 | Flash lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB541699A true GB541699A (en) | 1941-12-08 |
Family
ID=34221029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10075/40A Expired GB541699A (en) | 1939-03-16 | 1940-06-10 | Improvements in electric incandescent flash lamps |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US2285125A (en) |
| AT (2) | AT163983B (en) |
| CH (1) | CH292829A (en) |
| FR (1) | FR866015A (en) |
| GB (1) | GB541699A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2791111A (en) * | 1953-01-15 | 1957-05-07 | Westinghouse Electric Corp | Fulminator for photoflash lamps |
| US2756577A (en) * | 1954-04-07 | 1956-07-31 | Gen Electric | Flash lamp and ignition means therefor |
| DE963940C (en) * | 1954-10-29 | 1957-05-16 | Gen Electric | Ignition mass for flashlight lamps |
| US2791114A (en) * | 1954-10-29 | 1957-05-07 | Gen Electric | Flash lamp and ignition means therefor |
| US2913892A (en) * | 1956-08-06 | 1959-11-24 | Union Carbide Corp | Photoflash lamp |
| US2955447A (en) * | 1957-07-16 | 1960-10-11 | Sylvania Electric Prod | Photoflash lamp |
| US3220224A (en) * | 1962-05-25 | 1965-11-30 | Westinghouse Electric Corp | Photoflash lamp |
| US3540818A (en) * | 1968-08-28 | 1970-11-17 | Sylvania Electric Prod | Photoflash lamp |
| US3521984A (en) * | 1968-08-28 | 1970-07-28 | Sylvania Electric Prod | Photoflash lamp |
| US3625641A (en) * | 1969-05-23 | 1971-12-07 | Sylvania Electric Prod | Photoflash lamp |
| US5821451A (en) * | 1996-12-19 | 1998-10-13 | Eastman Kodak Company | Photoflash particle mixture |
| US20050079166A1 (en) | 2003-05-21 | 2005-04-14 | Alexza Molecular Delivery Corporation | Self-contained heating unit and drug-supply unit employing same |
| US7402777B2 (en) | 2004-05-20 | 2008-07-22 | Alexza Pharmaceuticals, Inc. | Stable initiator compositions and igniters |
| CA2576961A1 (en) | 2004-08-12 | 2006-03-02 | Alexza Pharmaceuticals, Inc. | Aerosol drug delivery device incorporating percussively activated heat packages |
-
1939
- 1939-03-16 US US262209A patent/US2285125A/en not_active Expired - Lifetime
- 1939-06-09 US US278288A patent/US2280598A/en not_active Expired - Lifetime
-
1940
- 1940-06-06 FR FR866015D patent/FR866015A/en not_active Expired
- 1940-06-10 GB GB10075/40A patent/GB541699A/en not_active Expired
-
1947
- 1947-06-06 AT AT163983D patent/AT163983B/en active
- 1947-06-23 AT AT166186D patent/AT166186B/en active
- 1947-07-21 CH CH292829D patent/CH292829A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT166186B (en) | 1950-06-26 |
| US2285125A (en) | 1942-06-02 |
| FR866015A (en) | 1941-06-13 |
| CH292829A (en) | 1953-08-31 |
| AT163983B (en) | 1949-09-10 |
| US2280598A (en) | 1942-04-21 |
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