US1930315A - Flash lamp - Google Patents

Flash lamp Download PDF

Info

Publication number
US1930315A
US1930315A US616112A US61611232A US1930315A US 1930315 A US1930315 A US 1930315A US 616112 A US616112 A US 616112A US 61611232 A US61611232 A US 61611232A US 1930315 A US1930315 A US 1930315A
Authority
US
United States
Prior art keywords
bulb
protuberance
flash lamp
reflector
slot
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 - Lifetime
Application number
US616112A
Inventor
Kobayashi Keishiro
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US1930315A publication Critical patent/US1930315A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • My invention relates to flash lamps and more particularly to flash lamps used for photographic purposes. Still more particularly my invention relates to ignition means therefor.
  • Flash lamps are already known in which an oxidizable metal in the form of a ribbon or foil is placed in a transparent bulb filled with oxygen or an oxygen gas mixture.
  • the ignition of the combustible in the known lamps is accomplished 10 by electrically heating up a filament carrying a fulminating substance thereon.
  • This method of ignition requires of course the use of a source of electricity, such as house current or a separate battery.
  • One of the objects of my invention is the provision of means for igniting the combustible which will be simple and will eliminate auxiliary apparatus.
  • the drawing is a perspective view of'a lamp and reflector comprising my invention.
  • the lamp comprises a glass bulb 10 containing a loose filling of a readily oxidizable material 11, preferably a foil or ribbon of aluminum or magnesium.
  • Said bulb 10 also contains a gas or substance that supports combustion, preferably oxygen or a substance that generates oxygen.
  • a readily inflammable substance 12 such as a mixture of red phosphorus and nitre in equal proportions is placed in the bulb 10, preferably in a protuberance such as the boss 13' forming a part of said bulb.
  • the walls of said boss 13 are preferably made thin.
  • This lamp is ignited by heating said boss 13, as by a match, so that the readily inflammable substance 12 is ignited and immediately ignites the combustible material 11 which gives off a flash of light of high intensity.
  • a reflector which may be used to advantage with the flash lamp.
  • Said reflector comprises a curved body portion it open toward the front and bounded by two plane ends 15, 16 at the top and bottom respectively.
  • a leaf spring 17 mounted on the upper end 15 has a hole 18 therein in which an exhaust tip 19 of the bulb 10 is inserted and the lower end 16 has a slot 20 therein which receives the boss 13 on said bulb.
  • the reflector is held by a handle 21 mounted on the back of the body 14 of said reflector.
  • a flash lamp comprising a bulb, a flashing medium in said bulb, a gas which supports combustion in said bulb, a protuberance on said bulb, and a filling of a highly inflammable substance in said protuberance.
  • a flash lamp comprising a bulb, a metal foil in said bulb, a gas which supports combustion in said bulb, a protuberance on said bulb, and a filling of a highly inflammable substance in said protuberance.
  • the com- 5 bination of a reflector comprising a body portion having a slot in the bottom thereof and a bulb containing a flashing medium and having a protuberance extending through said slot.
  • a reflector comprising a body portion having a slot in the bottom thereof and a handle, and a bulb containing a flashing medium and having a protuberance extending through said slot.
  • a flash lamp comprising a bulb, a flashing medium in said bulb, a gas which supports combustion in said bulb, a thin walled protuberance on said bulb, and a filling of a highly inflammable substance in said protuberance.
  • a reflector comprising a body portion having a slot in the bottom thereof, a bulb containing a flashing medium and having a protuberance extending through said slot, an ex- 5 haust tip on said bulb, and means mounted on said reflector for engaging said exhaust tip.

Description

K. KOBAYASHI Oct. 10, 1933.
FLASH LAMP Filed June 8, 1952 [N VENT UR KEJSHZ'R [.7 KUBAYA 5H! A725 A a" T GENE? Patented Oct. 10, 1933 UNITED STATES FLASH LAMP Keishiro Kobayashi, Tokyo, Japan, assignor to General Electric Company, a corporation of New York Application June 8, 1932, Serial No. 616,112, and in Japan June 23, 1931 6 Claims.
My invention relates to flash lamps and more particularly to flash lamps used for photographic purposes. Still more particularly my invention relates to ignition means therefor.
Flash lamps are already known in which an oxidizable metal in the form of a ribbon or foil is placed in a transparent bulb filled with oxygen or an oxygen gas mixture. The ignition of the combustible in the known lamps is accomplished 10 by electrically heating up a filament carrying a fulminating substance thereon. This method of ignition requires of course the use of a source of electricity, such as house current or a separate battery. One of the objects of my invention is the provision of means for igniting the combustible which will be simple and will eliminate auxiliary apparatus.
Other features and advantages of my invention will appear from the following description of species thereof.
The drawing is a perspective view of'a lamp and reflector comprising my invention.
Referring to the drawing, the lamp comprises a glass bulb 10 containing a loose filling of a readily oxidizable material 11, preferably a foil or ribbon of aluminum or magnesium. Said bulb 10 also contains a gas or substance that supports combustion, preferably oxygen or a substance that generates oxygen. A readily inflammable substance 12 such as a mixture of red phosphorus and nitre in equal proportions is placed in the bulb 10, preferably in a protuberance such as the boss 13' forming a part of said bulb. The walls of said boss 13 are preferably made thin. This lamp is ignited by heating said boss 13, as by a match, so that the readily inflammable substance 12 is ignited and immediately ignites the combustible material 11 which gives off a flash of light of high intensity.
I have shown in the drawing a reflector which may be used to advantage with the flash lamp. Said reflector comprises a curved body portion it open toward the front and bounded by two plane ends 15, 16 at the top and bottom respectively. A leaf spring 17 mounted on the upper end 15 has a hole 18 therein in which an exhaust tip 19 of the bulb 10 is inserted and the lower end 16 has a slot 20 therein which receives the boss 13 on said bulb. The reflector is held by a handle 21 mounted on the back of the body 14 of said reflector.
What I claim as new and desire to secure by Letters Patent of the United States is:
1. A flash lampcomprising a bulb, a flashing medium in said bulb, a gas which supports combustion in said bulb, a protuberance on said bulb, and a filling of a highly inflammable substance in said protuberance.
2. A flash lamp comprising a bulb, a metal foil in said bulb, a gas which supports combustion in said bulb, a protuberance on said bulb, and a filling of a highly inflammable substance in said protuberance.
3. In a. device of the class described, the com- 5 bination of a reflector comprising a body portion having a slot in the bottom thereof and a bulb containing a flashing medium and having a protuberance extending through said slot.
4. In a device of the class described, the combination of a reflector comprising a body portion having a slot in the bottom thereof and a handle, and a bulb containing a flashing medium and having a protuberance extending through said slot.
5. A flash lamp comprising a bulb, a flashing medium in said bulb, a gas which supports combustion in said bulb, a thin walled protuberance on said bulb, and a filling of a highly inflammable substance in said protuberance.
6. In a device of the class described, the combination of a reflector comprising a body portion having a slot in the bottom thereof, a bulb containing a flashing medium and having a protuberance extending through said slot, an ex- 5 haust tip on said bulb, and means mounted on said reflector for engaging said exhaust tip.
KEISHIRO KOBAYASHI.
US616112A 1931-06-23 1932-06-08 Flash lamp Expired - Lifetime US1930315A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1930315X 1931-06-23

Publications (1)

Publication Number Publication Date
US1930315A true US1930315A (en) 1933-10-10

Family

ID=16301011

Family Applications (1)

Application Number Title Priority Date Filing Date
US616112A Expired - Lifetime US1930315A (en) 1931-06-23 1932-06-08 Flash lamp

Country Status (1)

Country Link
US (1) US1930315A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508478A (en) * 1967-06-26 1970-04-28 Sylvania Electric Prod Photographic flashlamp unit
US3517182A (en) * 1968-02-07 1970-06-23 Sylvania Electric Prod Photoflash lamp unit
US3612849A (en) * 1968-10-08 1971-10-12 Sylvania Electric Prod Multilamp flash unit
US3692996A (en) * 1968-11-04 1972-09-19 Sylvania Electric Prod Photographic flashlamp unit
US3947221A (en) * 1974-08-30 1976-03-30 Mauser Francis P Personal protection device using flashcubes
US4060372A (en) * 1974-08-06 1977-11-29 Walter Beck Self-defense apparatus comprising flashcube light source
US20080181598A1 (en) * 2007-01-31 2008-07-31 Kobre Kenneth R Device for redirecting and reflecting light from camera flash and methods for using same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508478A (en) * 1967-06-26 1970-04-28 Sylvania Electric Prod Photographic flashlamp unit
US3517182A (en) * 1968-02-07 1970-06-23 Sylvania Electric Prod Photoflash lamp unit
US3612849A (en) * 1968-10-08 1971-10-12 Sylvania Electric Prod Multilamp flash unit
US3692996A (en) * 1968-11-04 1972-09-19 Sylvania Electric Prod Photographic flashlamp unit
US4060372A (en) * 1974-08-06 1977-11-29 Walter Beck Self-defense apparatus comprising flashcube light source
US3947221A (en) * 1974-08-30 1976-03-30 Mauser Francis P Personal protection device using flashcubes
US20080181598A1 (en) * 2007-01-31 2008-07-31 Kobre Kenneth R Device for redirecting and reflecting light from camera flash and methods for using same
US7925151B2 (en) 2007-01-31 2011-04-12 Kobre Kenneth R Device for redirecting and reflecting light from camera flash and methods for using same

Similar Documents

Publication Publication Date Title
US1930315A (en) Flash lamp
GB253826A (en) Improvements relating to electric incandescent lamps
US2361495A (en) Flash lamp
US2305561A (en) Flash lamp
US2057583A (en) Flash lamp
US1466779A (en) Combined cigar lighter and flash light
US1933338A (en) Combined lamp container and reflector
US1904057A (en) Flash lamp
US1893730A (en) Lamp
US2729960A (en) Flash lamp
US2034029A (en) Flashlight device
US1995938A (en) Flash lamp
US1776637A (en) Flash lamp
GB1222626A (en) Flash lamps
US1986474A (en) Device for operating photoflash lamps
US1944854A (en) Flash light lamp
US1513980A (en) Flash lamp for cameras
US3116623A (en) Flash lamp
GB439008A (en) A sheet flasher for taking photographs
US1833404A (en) Flash-light cartridge
GB192267A (en) An improved burner for liquid fuel, chiefly designed for heating inverted incandescent mantles
GB484676A (en) Improvements in or relating to electric battery lamps or torches
DE602025C (en) Electric flashlight, especially for photographic purposes
GB374879A (en) Improvements in or relating to photographic flash light apparatus
GB390427A (en) Improvements in or relating to electric flash-light bulbs