US2494916A - Electric lamp with blackening collector - Google Patents

Electric lamp with blackening collector Download PDF

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Publication number
US2494916A
US2494916A US9984A US998448A US2494916A US 2494916 A US2494916 A US 2494916A US 9984 A US9984 A US 9984A US 998448 A US998448 A US 998448A US 2494916 A US2494916 A US 2494916A
Authority
US
United States
Prior art keywords
bulb
blackening
collector
filament
arbor
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
US9984A
Other languages
English (en)
Inventor
Irving H Van Horn
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
Priority to NL656510896A priority Critical patent/NL144929B/xx
Priority to NL80117D priority patent/NL80117C/xx
Priority to BE487465D priority patent/BE487465A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US9984A priority patent/US2494916A/en
Priority to GB4381/49A priority patent/GB657220A/en
Application granted granted Critical
Publication of US2494916A publication Critical patent/US2494916A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters

Definitions

  • My invention relates in general to electric incandescent' lamps and more particularly to a mount structure therefor. Still more particularly, my invention relates to blackening collector means for such lamps and to a supporting arrangement therefor.
  • vaporized particles of the filament metal are carried by the convection currents within the. lamp bulb and are deposited on the walls of the bulb in the form of a dark coating which absorbs some of the light radiations from the filament and thereby reduces the luminous efliciency and the useful life of the lamp.
  • Such bulb blackening is particularly objectionable in lamps designed for base 'down operation and wherein the light passing through the upper end of the bulb is to be used for indirect lighting purposes, since the blackening particles in such case aredeposited by the rising convection-currents principally on the upper bowl end of the bulb where it absorbs and reduces the amount of light available for indirect lighting.
  • Another object of my invention is to provide a lamp mount structure having blackening colreflecting shape such as. for instance, a paraboloid.
  • the bulb l is preferably inside frosted and is provided with an internal light-diffusing coating -'l 0! the type disclosed in co-pending U. 8. application Serial No. 8'78 of Marvin Pipkln, filed January 7, 1948. and comprising a. layer of extremely fine particles of substantially pure silica deposited on the bulb wall by the combustion of an inflammable silicon compound within the bulb.
  • the silica coating on the flattened top or end wall 5 oi the .bulhis preferably of lesser density than that on theflaring side wall portlon6.
  • an electric energy translationfelement orvfllament 8 of a refractory metaLsucIi as tungsten is an electric energy translationfelement orvfllament 8 of a refractory metaLsucIi as tungsten.
  • The'fllament a illustrated comprises a coiled wire formed into horseshoe shape with the plane of thefllament extending transversely-'of'the bulb axis.
  • the said filament is of relatively high wattage suchas, for instance, 150' watts or higher, and it is supported at its ends byia' pair of lead-in wires 5,10.
  • the said leadi-in-wires 9, it are sealed in the press portion 4 o'r 'the stem 3, and out .wardly of the bulb are's'oldered or otherwise se- T cured to the'shell ii andeyelet it of a-base lector means of simple form and which can be quickly and easily mounted in place on the lamp mount.
  • Fig. 1 is an elevation, partly gas-filled electric incandescent lamp comprising my invention
  • Fig. 2 is an enlarged fragmentary view of the mount structure oi the lamp shown in Fig. 1
  • Fig. 3 is a detailed perspective view of the blackening collector device accord ing to the invention.
  • the lamp there shown comprises a sealed glass bulb l containing a gas filling, preferably consisting of argon with a small admixture of nitrogen, and having a neck portion 2 provided with a reentrant stem 3 having .a seal or press portion t.
  • a gas filling preferably consisting of argon with a small admixture of nitrogen
  • the particular bulb illustrated is provided with a flattened top portion 5 having a curvature of relatively large radius, and a flaring side wall portion 6 shaped in section, of a to conform to a surface of any desired optical 55 i3 securedto-the neck-Tend ci the bulb, as by cementing.”
  • the horseshoeeshaped filament t is further supported at; intermediate points along its length by one or more,,,anchor wires it the lower ends of which-are embedded in a ringshaped glass buttonlI-ili.iormedat-the upper end of a'tubular glass extension (pr-hollow arbor it extending upwardly fromgthe; stern press t in more or less alignment with the bulb axis.
  • a ringshaped glass buttonlI-ili.iormedat-the upper end of a'tubular glass extension pr-hollow arbor it extending upwardly fromgthe; stern press t in more or less alignment with the bulb axis.
  • the hollow interior ll of the glass arbor forms a chamber which opens into the interior of the bulb.
  • the glass arbor is formed with an inturned annular lip it which, together with the portion it of the stem press closing the base end of the hollow arbor, provides spaced stop shoulders within the hollow interior of the arbor.
  • a blackening collector 2d of suitable iorm' which, in the particular case illustrated, comprises a disc-shaped perforate body, such as the wire screen element shown or a perforated metal sheet, disposed transversely of the bulb axis and completely overlying or capping the fileoperation.
  • the perforated body 20 is preferably of slightly dished or shallow frusto-conical form, with its under or concave side facing downwardly towards the filament 8.
  • the blackening collector body 20 is supported in place within the bulb by a support member 2
  • is formed at its upper end with a right-angle bent end portion 22 which is welded to the fiat portion 23 of the wire screen element 20, with the wire support 2
  • is bent back upon itself to form a U-bend 24 therein and to provide a retroverted portion 25.
  • the upper or free end of the said retroverted portion 25 of the wire support is bent at a slight angle less than 90, for instance 45 or thereabouts, to provide a spring finger 26 the free height of which (i. e., the projected distance between the bend 21 in the retroverted wire portion and the free end of the spring finger 26, measured laterally of the wire support 2
  • and the free end of the spring finger 28 is made slightly less than the distance between the stop shoulders I8, l9 within the hollow glass arbor IS.
  • the blackening collector unit comprising the wire screen element 20 and its support wire 2
  • the spring finger 26 Since the free height of the spring finger 26 is greater than the inside diameter of the glass arbor IS, the spring finger, upon entering the hollow interior of the arbor, is compressed or flexed between the opposite 'sides of the inner wall of the arbor, thus yieldingly pressing the support wire 2
  • An electric incandescent lamp comprising a sealed glass bulb havinga reentrant stem provided with a tubular chamber open to the interior oi the bulb, a, pair of lead-in wires sealed through said stem and extending into the bulb, a filament in said bulb connected to said lead-in wires, a blackening collector in said bulb adjacent said filament, and support means secured at one end to said blackening collector and having its other end extending into said tubular chamber and resiliently engaging the walls of said chamber to hold the support means in place therein.
  • An electric incandescent lamp comprising a sealed glass bulb having a reentrant stem provided with a tubular chamber open to the interior of the bulb, a pair'of lead-in wires sealed through said stem and extending into the bulb, a filament in said bulb connected to said lead-in wires, a blackening collector in said bulb adjacent said filament, and a support member fastened to said blackening collector and having a straight end portion extending into said chamber and provided with a spring finger yieldingly engaging opposite sides of the chamber wall to resiliently hold the said end portion firmly against the chamber wall.
  • An electric incandescent lamp comprising a sealed glass bulb having a reentrant stem provided with a tubular glass extension projecting inwardly of the bulb, a pair of lead-in wires sealed through said stem and extending into the bulb, a filament in said bulb connected to said lead-in wires, 9. blackening collector in said bulb adjacent said filament, and a support member fastened to said blackening collector and having'a straight end portion extending into said tubular stem extension and provided with a spring finger yieldingly engaging opposite sides of th inner wall '01- said extension to resiliently hold the said end portion of the-support meniber firmly against the said inner wall of the extension.
  • An electric-incandescent lamp comprising a sealed "glass .bulb having a reentrant stem prothe end of the arbor l8 and the blackening collector 20 will depend on the shape of the particular filament employed.
  • may extend substantiallystraight up from the end of the arbor
  • An electric incandescent lamp comprising a sealed glass bulb having a reentrant stem provided with a tubular chamber open to the interior oi the bulb and having shoulders therein spaced longitudinally thereof, a pair of lead-in wires sealed through said stem and extending into the bulb, a filament in said bulb connected to said lead-in wires, a blackening collector in said bulb adjacent said filament, and a support member fastened to said blackening collector and having a straight end portion extending into said chamber and provided with a spring finger yieldingly engaging opposite sides of the chamber wall to resiliently hold the said end portion firmly against the chamber wall, said spring finger toeether with the end of said support member innermost of said chamber providing spaced limiting stops engageable with the said shoulders in said chamber to limit movement of the support member longitudinally oi the chamber.
  • an electric incandescent lamp comprising a sealed glass bulb having a reentrant stem provided with. a tubular chamber open to the interior oi the bulb, a pair of lead-in wires sealed through said stem and extending into the bulb,
  • an electric incandescent lamp comprising a sealed glass bulb having a reentrant stem provided with a tubular chamber open to the interior oi the bulb and having shoulders therein spaced longitudinally thereof, a pair of lead-in wires sealed through said stem andextending into the bulb, a filament in said bulb connected to said lead-in wires, 9. blackening collector in said bulb adjacent said filament, and a support member fastened to said blackening collector and having a spring wire extension projecting into said chamber and bent back upon itsel!
  • An electric incandescent lamp comprising a sealed glass bulb having a reentrant stem provided with a tubular chamber open to the interior or the bulb, a pair of lead-in wires sealed through said stem and extending into the bulb, a filament in said bulb connected to said leadin wires, a blackening collector in said bulb adjacent said filament, and a spring wire support fastened at one end to said blackening collector and having its other end extending into said chamber and bent back upon itself to provide a retmverted portion, the free end of said retroverted portion being bent at an angle to provide a spring finger yieldingly engaging opposite sides or the wall to resiliently hold the spring wire support firmly against the chamber wall.

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  • Vessels And Coating Films For Discharge Lamps (AREA)
US9984A 1948-02-21 1948-02-21 Electric lamp with blackening collector Expired - Lifetime US2494916A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL656510896A NL144929B (nl) 1948-02-21 Werkwijze voor de bereiding van een geneesmiddel met 5-hydroxytryptamine-antagonistische werking en van geneeskrachtige verbindingen, benodigd voor eerstgenoemde werkwijze.
NL80117D NL80117C (en(2012)) 1948-02-21
BE487465D BE487465A (en(2012)) 1948-02-21
US9984A US2494916A (en) 1948-02-21 1948-02-21 Electric lamp with blackening collector
GB4381/49A GB657220A (en) 1948-02-21 1949-02-17 Improvements in or relating to electric incandescent lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9984A US2494916A (en) 1948-02-21 1948-02-21 Electric lamp with blackening collector

Publications (1)

Publication Number Publication Date
US2494916A true US2494916A (en) 1950-01-17

Family

ID=21740847

Family Applications (1)

Application Number Title Priority Date Filing Date
US9984A Expired - Lifetime US2494916A (en) 1948-02-21 1948-02-21 Electric lamp with blackening collector

Country Status (4)

Country Link
US (1) US2494916A (en(2012))
BE (1) BE487465A (en(2012))
GB (1) GB657220A (en(2012))
NL (2) NL144929B (en(2012))

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812465A (en) * 1954-05-10 1957-11-05 Kenneth J Germeshausen Gaseous-discharge device
US2931933A (en) * 1958-03-28 1960-04-05 Bell & Howell Co Incandescent lamp
US3209192A (en) * 1960-12-29 1965-09-28 Westinghouse Electric Corp Decorative electric lamp with specular coating
US3348094A (en) * 1965-12-28 1967-10-17 Sylvania Electric Prod Projection lamp including a blackening control device
US3458746A (en) * 1966-06-04 1969-07-29 Philips Corp Projection lamp with a wire screen for blackening prevention
US4280076A (en) * 1978-10-18 1981-07-21 Duro-Test Corporation Incandescent lamp with structure for collecting evaporated filament material
US20020070666A1 (en) * 2000-09-14 2002-06-13 Van Den Bogert Willem Johannes Fluorescent lamp and method of manufacturing same
CN114352955A (zh) * 2021-12-22 2022-04-15 杭州天都照明电器有限公司 用于led灯丝灯的芯柱、led灯丝灯、led灯和灯具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183952A (en) * 1938-05-13 1939-12-19 Westinghouse Electric & Mfg Co Fuse lead construction for electric lamps
US2208987A (en) * 1938-05-24 1940-07-23 Gen Electric Electric incandescent lamp
US2379058A (en) * 1943-04-06 1945-06-26 Westinghouse Electric Corp Lamp with means to improve lumen maintenance

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183952A (en) * 1938-05-13 1939-12-19 Westinghouse Electric & Mfg Co Fuse lead construction for electric lamps
US2208987A (en) * 1938-05-24 1940-07-23 Gen Electric Electric incandescent lamp
US2379058A (en) * 1943-04-06 1945-06-26 Westinghouse Electric Corp Lamp with means to improve lumen maintenance

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812465A (en) * 1954-05-10 1957-11-05 Kenneth J Germeshausen Gaseous-discharge device
US2931933A (en) * 1958-03-28 1960-04-05 Bell & Howell Co Incandescent lamp
US3209192A (en) * 1960-12-29 1965-09-28 Westinghouse Electric Corp Decorative electric lamp with specular coating
US3348094A (en) * 1965-12-28 1967-10-17 Sylvania Electric Prod Projection lamp including a blackening control device
US3458746A (en) * 1966-06-04 1969-07-29 Philips Corp Projection lamp with a wire screen for blackening prevention
US4280076A (en) * 1978-10-18 1981-07-21 Duro-Test Corporation Incandescent lamp with structure for collecting evaporated filament material
US20020070666A1 (en) * 2000-09-14 2002-06-13 Van Den Bogert Willem Johannes Fluorescent lamp and method of manufacturing same
US6936967B2 (en) * 2000-09-14 2005-08-30 Koninklijke Philips Electronics N.V. Fluorescent lamp and method of manufacturing same
CN114352955A (zh) * 2021-12-22 2022-04-15 杭州天都照明电器有限公司 用于led灯丝灯的芯柱、led灯丝灯、led灯和灯具

Also Published As

Publication number Publication date
NL80117C (en(2012))
BE487465A (en(2012))
NL144929B (nl)
GB657220A (en) 1951-09-12

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