US3791710A - Method for producing a multiple filamented cartridge lamp - Google Patents

Method for producing a multiple filamented cartridge lamp Download PDF

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Publication number
US3791710A
US3791710A US00237847A US3791710DA US3791710A US 3791710 A US3791710 A US 3791710A US 00237847 A US00237847 A US 00237847A US 3791710D A US3791710D A US 3791710DA US 3791710 A US3791710 A US 3791710A
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US
United States
Prior art keywords
lamp
filament
press
conductors
sealed
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
US00237847A
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English (en)
Inventor
L Curtis
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.)
Cooper Industries LLC
Original Assignee
Wagner Electric Corp
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 Wagner Electric Corp filed Critical Wagner Electric Corp
Application granted granted Critical
Publication of US3791710A publication Critical patent/US3791710A/en
Assigned to STUDEBAKER-WORTHINGTON, INC. reassignment STUDEBAKER-WORTHINGTON, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WAGNER ELECTRIC CORPORATION
Assigned to EDISON INTERNATONAL, INC. reassignment EDISON INTERNATONAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: STUDEBAKER-WORTHINGTON, INC., A CORP. OF DE
Assigned to COOPER INDUSTRIES, INC., 1001 FANNIN, HOUSTON, TEXAS 77002, A CORP. OF reassignment COOPER INDUSTRIES, INC., 1001 FANNIN, HOUSTON, TEXAS 77002, A CORP. OF ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: EDISON INTERNATIONAL, INC., A CORP. OF DE.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof

Definitions

  • ABSTRACT A method for producing multiple filamented cartridge lamps is disclosed.
  • the multiple filaments are con nected together on the external ends of a cartridge lamp by linking members and then the ends of. the lamp are press sealed. Thereafter, a linking member is separated externally on at least one end to form separate terminals for each filament whereby each filament can have a separate source of energy.
  • the present invention is a new and useful method for producing a multiple filamented cartridge-type lamp and is especially useful for producing a two filamented lamp.
  • the two filaments are joined together by a U shaped linking member at each end whereby the two filaments will be held in spaced relation to each other during the subsequent forming of the lamp.
  • the joined filaments are placed inside the lamp with the linking members extending'exter'nal thereto.
  • the lamp is then exhausted by the flush method and an instantaneous press seal is applied to each end of the lamp. If desired, one end of the lamp can be press sealed before flushing and the other after flushing. Thereafter, the linking member is separated on at least one end of the lamp,
  • each filament may be operated separately with a common ground.
  • the linking members may be separated at both ends and each filament can be used in a completely separate circuit.
  • the lamps have particular application in the automotive industry as combination stop and tail lights or combination tail light and turn signal light.
  • the lamps formed by the present invention have considerable advantage over the prior art since the filaments are linked together during the formation of the lamp and it is not necessary to hold them separately by the application of external holding means. This is a simple and comparatively low cost method of making multiple filamented lamps.
  • FIG. 1 shows a multiple filament assembly formed in accordance with the present invention before insertion into the lamp case
  • FIG. 2 shows a two filament assembly press sealed in a glass bulb
  • FIG. 3 shows the two filament assembly in the lamp of FIG. 2 with one set of terminal posts and a common ground;
  • FIG. 4 shows the two filament assembly in the lamp of FIG. 2 with two sets of terminal posts each independent
  • FIG. 5 shows the lamp assembly of FIG. 3 with a cap on the common end thereof.
  • FIG. 1 is shown three filaments 10, 11 and 12 linked in accordance with the present invention before insertion into the lamp case, usually a glass bulb.
  • the filaments 10, 11 and 12 have lead-in wires 14, l5, 16, 17, and 18, respectively and the filaments are suitably joined to the lead-in wires by folding over tabs on the lead-in wires as shown.
  • the lead-in wires 14, 16, 18 are joined at one end suitably by welding to linking member 22 and lead-in wires 15, 17, 20 are joined at the other end by linkingmember 23.
  • the linking members 22 and 24 are preferably made of either nickel or Kovar.
  • Kovar isa Westinghouse tradename for a sealing alloy consisting of iron, nickel and chromium.
  • the lead-in wires l4, 15, 16, 17,18 and 20 are suitably made of dumet or Kovar which are sealing alloys.
  • Dumet is a generic name for a sealing metal for soft glass consisting of an alloy of nickel and iron usually covered by a sleeve of copper which in turn is covered with a nickel plate or a borated surface and is available from General Electric, Westinghouse, Sylvania and Texas Instruments.
  • the particular sealing alloy is dependent upon the material used for the envelop; usually dumet when soda lime glass is used and Kovar when heat resistant glass is used such as Corning 7052 or 7056.
  • the filaments 1 l, 10 and 12 are suitably made of tungsten.
  • FIG. 2 there is shown a two filament assembly similar to the three filament assembly of FIG. 1 encased within a glass envelop 26.
  • the linking members 24 and 25 are similar to linking members 22 and 23 except that provision is made for connecting only two filaments.
  • the filaments shown in FIG. 2 are connected to the linking members in the same manner shown and described for FIG. 1.
  • the envelop has been heated at its ends and press sealed in standard manner at 28 and 30. Before sealing at the second end, the lamp was exhausted by the flush method, preferably with nitrogen or argon or any other suitable inert gas.
  • soda lime glass is used for the bulb
  • the sealing alloy is nickel plated dumet
  • the linking member is nickel.
  • the linking member 24 is separated as shown in FIG. 3 so that separate terminals'32 and 34 are provided at one end of the bulb.
  • the linking member 25 can serve as a ground and sepa. rate signals can be fed to terminals 32 and 34.
  • FIG. 4 An alternative form of construction is shown in FIG. 4 wherein both linking members 24 and 25 have been severed, forming terminals 32, 34 and 36, 38. With this construction, the filament with terminals 34, 36 can have a completely separate supply from the filament with terminals 32, 38.
  • the end 40 of the lamp may be provided with a standard metal cap 42 as shown in FIG. 5; While this is desirable, it is not necessary.
  • a process for manufacturing multiple filamented lamps wherein at least one filament can be operated independently of the others comprising:
  • a. forming a-filament assembly comprising a plurality of spaced filaments joined at each end to separate lead-in conductors which in turn are joined to opposed linking members by i. affixing lead-in conductors to opposed ends of each filament,

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Resistance Heating (AREA)
US00237847A 1972-03-24 1972-03-24 Method for producing a multiple filamented cartridge lamp Expired - Lifetime US3791710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23784772A 1972-03-24 1972-03-24

Publications (1)

Publication Number Publication Date
US3791710A true US3791710A (en) 1974-02-12

Family

ID=22895459

Family Applications (1)

Application Number Title Priority Date Filing Date
US00237847A Expired - Lifetime US3791710A (en) 1972-03-24 1972-03-24 Method for producing a multiple filamented cartridge lamp

Country Status (6)

Country Link
US (1) US3791710A (fr)
JP (1) JPS498080A (fr)
CA (1) CA959921A (fr)
FR (1) FR2177911B1 (fr)
GB (1) GB1362646A (fr)
IT (1) IT979854B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6614008B2 (en) 2001-12-14 2003-09-02 Xerox Corporation Universal voltage fuser heater lamp

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166232A (en) * 1978-03-13 1979-08-28 Gte Sylvania Incorporated Filament lead-in support for tungsten halogen capsule for headlight
GB2170040A (en) * 1985-01-23 1986-07-23 Walter Anderson Improved light bulbs
JP2592417B2 (ja) * 1987-09-30 1997-03-19 日本ゼオン株式会社 輸液供給用容器及びそれを用いた輸液供給装置
JP2533294Y2 (ja) * 1993-08-17 1997-04-23 正行 中家 汚物の焼却用ボイラー
JP2532757Y2 (ja) * 1993-08-17 1997-04-16 正行 中家 汚物の焼却用ボイラー

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265923A (en) * 1963-03-19 1966-08-09 Westinghouse Electric Corp Baseless double-ended electric incandescent lamp
US3286118A (en) * 1962-07-06 1966-11-15 Ass Elect Ind Electric incandescent lamps
US3295016A (en) * 1964-01-02 1966-12-27 Gen Electric Manufacture of electric incandescent lamps
US3356884A (en) * 1964-06-30 1967-12-05 Westinghouse Electric Corp Electrode starting arrangement having a coiled heating element connected to the retroverted portion of the electrode
US3496403A (en) * 1968-03-28 1970-02-17 Westinghouse Electric Corp Single-ended electric incandescent lamp and mount assembly therefor
US3555342A (en) * 1969-02-11 1971-01-12 Westinghouse Electric Corp Single-ended incandescent projection lamp having dual series-connected filaments and an integral gripping cap

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286118A (en) * 1962-07-06 1966-11-15 Ass Elect Ind Electric incandescent lamps
US3265923A (en) * 1963-03-19 1966-08-09 Westinghouse Electric Corp Baseless double-ended electric incandescent lamp
US3295016A (en) * 1964-01-02 1966-12-27 Gen Electric Manufacture of electric incandescent lamps
US3356884A (en) * 1964-06-30 1967-12-05 Westinghouse Electric Corp Electrode starting arrangement having a coiled heating element connected to the retroverted portion of the electrode
US3496403A (en) * 1968-03-28 1970-02-17 Westinghouse Electric Corp Single-ended electric incandescent lamp and mount assembly therefor
US3555342A (en) * 1969-02-11 1971-01-12 Westinghouse Electric Corp Single-ended incandescent projection lamp having dual series-connected filaments and an integral gripping cap

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6614008B2 (en) 2001-12-14 2003-09-02 Xerox Corporation Universal voltage fuser heater lamp

Also Published As

Publication number Publication date
CA959921A (en) 1974-12-24
GB1362646A (en) 1974-08-07
IT979854B (it) 1974-09-30
FR2177911B1 (fr) 1977-04-29
DE2314624A1 (de) 1973-10-04
DE2314624B2 (de) 1977-05-12
FR2177911A1 (fr) 1973-11-09
JPS498080A (fr) 1974-01-24

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Legal Events

Date Code Title Description
AS Assignment

Owner name: STUDEBAKER-WORTHINGTON, INC., ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WAGNER ELECTRIC CORPORATION;REEL/FRAME:003984/0757

Effective date: 19801229

AS Assignment

Owner name: COOPER INDUSTRIES, INC., 1001 FANNIN, HOUSTON, TEX

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:EDISON INTERNATIONAL, INC., A CORP. OF DE.;REEL/FRAME:004475/0382

Effective date: 19851031