US2252476A - Base for electric lamps - Google Patents

Base for electric lamps Download PDF

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Publication number
US2252476A
US2252476A US367810A US36781040A US2252476A US 2252476 A US2252476 A US 2252476A US 367810 A US367810 A US 367810A US 36781040 A US36781040 A US 36781040A US 2252476 A US2252476 A US 2252476A
Authority
US
United States
Prior art keywords
base
bulb
envelope
wires
glass
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
US367810A
Other languages
English (en)
Inventor
Daniel K Wright
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
Priority to US367810A priority Critical patent/US2252476A/en
Application granted granted Critical
Publication of US2252476A publication Critical patent/US2252476A/en
Priority to DEP6452D priority patent/DE891889C/de
Priority to FR877315D priority patent/FR877315A/fr
Priority to BE444347D priority patent/BE444347A/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors
    • H01J5/40—End-disc seals, e.g. flat header

Definitions

  • My invention relates to electric incandescent lamps and similar devices comprising a bulbdevices such as described and claimed in my,
  • One objectof my invention is to provide a base for electrical devices of the above type which is simple in construction and inexpensive, and which is firmly secured to the envelope or the device without the use of the usual basing cement.
  • Another object of my invention is to provide an electrical device having a base firmly secured to a curved or convex surface of the envelope of such device and effectively locked against lateral and rotative movement thereon, the base being secured to the envelope by mechanical means.
  • Fig. 1 is a side elevation, partly in section, of an electric incandescent lamp provided with a base comprising my invention
  • Fig. 2 is a fragmentary rear elevation, partly in section, of the lamp shown in Fig. 1
  • Fig. 3 is a perspective view of the lamp base itself.
  • the lamp comprises a sealed glass bulb or envelope I consisting of a preformed pressed glass concave reflector section II of heat-resisting glass, and a cover glass or lens section i2, also of heat-resisting pressed glass,
  • the interior surface i3 of the reflector section II is of any suitable shape, preferably that of a paraboloid, and is covered with a reflecting metallic coating I4,
  • the leading-in wires lit, il, ertterlorly of the envelope it), are hermetically united, preferably by brazing, to metal cups or thimbles 2 i, ii having their es or rims fused to and sunk and embedded in the thickness of the glass bosses ill surrounding the openings 88.
  • a hermetic seal is thus provided between the leading-in wires and lamp envelope similar to that described and claimed in my Patent No. 2,098,080, issued November 2, 1937.
  • the cups or thimbles M are made of a metal to which the glass of the lamp envelope will wet" or stick, and should preferably have the same expansion as the glass, as near as may be.
  • the cups at are preferably made of an iron-nickel-cobalt alloy known as Fernico.
  • a base 23 Mounted on the curved rear surface 22 of the reflector section It, at the apex thereof, is a base 23 according to the invention comprising a molded hollow body member or shell 24 of suitable insulating material, such as Bakelite.
  • the shell is open at its inner end and is formed with a flattened oval portion 25 having semi-circular curved ends fitting snugly over the bosses IS on the reflector section H, as shown particularly in Fig. 2.
  • the outer end of the shell is closed by an end wall 25 which is connected to the oval shaped wall portion 25 by tapering flat and .curved side wall portions 21 and 28 respectively.
  • the rim or edge 28 of the base shell 24 is suitably curved, as shown in Fig. 1, to conform to the curvature of the rear surface 22 of the envelope.
  • the rim or edge is beveled or rounded inwardly, as shown'at 30 in Fig. 1, to provide clearance for the fillets at the bases of the glass bosses l9 and thus permit the base shell to fit down onto the curved rear surface 22 of the lamp envelope.
  • a pair of metal strips 3! forming the terminals of the base.
  • are molded in the opposite ends of the end wall 28 and have bent portions 32 extending along and molded in the tapering curved .side walls 2!.
  • the leading-in wires i0, I! are electrically connected to the metal terminal strips II, the said wires extending through suitable fastened to the strips by solder 33 or other suitable means.
  • Suitable fastening screws 34 are threaded into the bent portions 32 of the metal bosses to therebylock said member against lat era] and rotational displacement on said bulb,
  • leading-in wires hermetically sealed in said bulb and fixedly secured at their outer ends to said base contacts, said leading-in wires being tightly stretched between said bulb and base and constituting the sole means for securing said base firmly to said bulb against the said convex wall thereof.
  • the base 23 is secured to the lamp envelope ll solely by the relatively heavy leading-in wires i6, II, no basing cement being used for attacha ment purposes.
  • the said wires are stretched tightly between the metal cups 2
  • An electrical device comprising a sealed bulb having a concave reflector portion formed as a surface of revolution and provided with spaced bosses on its outer convex surface ad- Jacent the apex thereof, an electrical energy translation element mounted within said bulb in definite optical relation to said reflector portion, a basemounted on the apical portion of said bulb, said base comprising a hollow body member of insulating material provided with metal contacts and having its inner end open and shaped to conform-to and engage the convex outer surface of said bulb at the apex thereof and to fit snugly around said bosses. to thereby lock said cular ends of the oval shaped base shellportion II and the glass bosses I! on the lamp envelope.
  • An electrical device comprising a sealed bulbhaving a convex outer wall portion provided with spaced bosses on the surface thereof, a base comprising a hollow body member of insulating material provided with metal contacts and having an open end fitting snugly around said bosses to thereby lock said member against lateral and rotational displacement on said bulb, and leading-in wires hermetically sealed in said bulb and fixedly secured at their outer ends to said base contacts, said leading-in wires being tightly stretched between said bulb and base and constituting the soiemeans for securing said base firmly to said bulb.
  • An electrical device comprising a sealed bulb having a convex outer wall portion provided with spaced bosses on the surface thereof, a base comprising a hollow body member of insulating material provided with metal contacts and having an open end shaped to conform to and engage said convex bulb wall and fit snugly around said member 'againstlate'ral and rotational displacement on said bulb, and leading-in wires hermetically sealed in said bulb and electrically connected at their inner ends to-said translation element and at their outer ends to said base contacts, said leading-in wires being tightly stretched between said bulb and base and constituting the sole means for securing said base firmly to said bulb against the convex outer surface at the apex thereof.
  • a base for attachment to the envelope of an electrical device comprising a molded hollow body member of insulating material closed at one end by an end wall, andlmetal terminal elements molded into the outer surface of said end wall and each having an opening in alignment with openings in said end wall so as to communicate with the interior of said body member, the wall of said body member adjacent the open end thereof being formed inthe shape of a flattened oval with substantially semi-circular ends and the rim of said body member being shaped to conform to the curvature of the wall of said envelope.

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
US367810A 1940-11-29 1940-11-29 Base for electric lamps Expired - Lifetime US2252476A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US367810A US2252476A (en) 1940-11-29 1940-11-29 Base for electric lamps
DEP6452D DE891889C (de) 1940-11-29 1941-11-01 Kittlose Sockelbefestigung an elektrischen Gluehlampen
FR877315D FR877315A (fr) 1940-11-29 1941-11-28 Perfectionnements aux culots de lampes
BE444347D BE444347A (en(2012)) 1940-11-29 1942-02-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US367810A US2252476A (en) 1940-11-29 1940-11-29 Base for electric lamps

Publications (1)

Publication Number Publication Date
US2252476A true US2252476A (en) 1941-08-12

Family

ID=23448705

Family Applications (1)

Application Number Title Priority Date Filing Date
US367810A Expired - Lifetime US2252476A (en) 1940-11-29 1940-11-29 Base for electric lamps

Country Status (4)

Country Link
US (1) US2252476A (en(2012))
BE (1) BE444347A (en(2012))
DE (1) DE891889C (en(2012))
FR (1) FR877315A (en(2012))

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436259A (en) * 1946-03-08 1948-02-17 Gen Electric Electric lamp base
US2524478A (en) * 1949-04-02 1950-10-03 Bailey Meter Co Bolometer
US2867910A (en) * 1955-08-29 1959-01-13 Gen Motors Corp Projection lamp aiming
US2870362A (en) * 1955-06-15 1959-01-20 Gen Motors Corp Pre-aimed light projector
US4804878A (en) * 1987-02-05 1989-02-14 Gte Products Corporation Electric lamp, base for use therewith and method of assembling same
US5003217A (en) * 1989-12-18 1991-03-26 Gte Products Corporation Floating rivet pin lamp base
EP2053628A1 (en) * 2007-10-26 2009-04-29 Koninklijke Philips Electronics N.V. Capped lamp/reflector unit
US10208915B2 (en) * 2013-07-30 2019-02-19 Lumileds Llc Thermal function of headlight sealing cap

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3239328C2 (de) * 1982-10-23 1993-12-23 Pfeiffer Vakuumtechnik Magnetisch gelagerte Turbomolekularpumpe mit Schwingungsdämpfung

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436259A (en) * 1946-03-08 1948-02-17 Gen Electric Electric lamp base
US2524478A (en) * 1949-04-02 1950-10-03 Bailey Meter Co Bolometer
US2870362A (en) * 1955-06-15 1959-01-20 Gen Motors Corp Pre-aimed light projector
US2867910A (en) * 1955-08-29 1959-01-13 Gen Motors Corp Projection lamp aiming
US4804878A (en) * 1987-02-05 1989-02-14 Gte Products Corporation Electric lamp, base for use therewith and method of assembling same
US5003217A (en) * 1989-12-18 1991-03-26 Gte Products Corporation Floating rivet pin lamp base
EP2053628A1 (en) * 2007-10-26 2009-04-29 Koninklijke Philips Electronics N.V. Capped lamp/reflector unit
WO2009053882A3 (en) * 2007-10-26 2009-06-11 Koninkl Philips Electronics Nv Capped lamp/reflector unit
US20100207504A1 (en) * 2007-10-26 2010-08-19 Koninklijke Philips Electronics N.V. Capped lamp/reflector unit
JP2011501375A (ja) * 2007-10-26 2011-01-06 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ キャップをされたランプ／リフレクタユニット
US8106571B2 (en) 2007-10-26 2012-01-31 Koninklijke Philips Electronics N.V. Capped lamp/reflector unit
US10208915B2 (en) * 2013-07-30 2019-02-19 Lumileds Llc Thermal function of headlight sealing cap

Also Published As

Publication number Publication date
BE444347A (en(2012)) 1942-03-31
FR877315A (fr) 1942-12-03
DE891889C (de) 1953-10-01

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