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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lamp
filament
press
conductors
sealed
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US00237847A
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L Curtis
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Cooper Industries LLC
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Wagner Electric Corp
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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.
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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

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  • 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)

Abstract

A method for producing multiple filamented cartridge lamps is disclosed. The multiple filaments are connected 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.

Description

United States Patent 1191 C urtis 1 1 Feb. 12, 1974 METHOD FOR PRODUCING A MULTIPLE FILAMENTED CARTRIDGE LAMP [75] Inventor: Lorin W. Curtis, Sun City, Calif.
[73] Assignee: Wagner Electric Corporation,
Newark, NJ.
22 Filed: Mar. 24, 1972 [2]] Appl. No.: 237,847
Ayres et al 316/17 3,265,923 8/1966 Peziosi et al 313/318 3,286,118 11/1966 Vause et al. 313/318 3,496,403 2/1970 Palermo et al 313/222 Primary Examiner-Roy Lake Assistant Examiner-J. W. Davie Attorney, Agent, or Firm Eyre, Mann & Lucas 1 57] 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.
6 Claims, 5 Drawing Figures 1 METHOD FOR PRODUCING A MULTIPLE FILAMENTED CARTRIDGE LAIVH 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,
whereby each filament may be operated separately with a common ground. Alternatively, 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.
These and other aspects of the present invention may be more fully understood with reference to the drawings in which:
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; and
FIG. 5 shows the lamp assembly of FIG. 3 with a cap on the common end thereof.
In 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.
In 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. In the preferred embodiment of the invention soda lime glass is used for the bulb, the sealing alloy is nickel plated dumet and the linking member is nickel.
After the two filament assembly has been sealed in the bulb, 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. With this construction, the linking member 25 can serve as a ground and sepa. rate signals can be fed to terminals 32 and 34. 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.
In the embodiment of FIG. 3, 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.
It will be understood that the claims are intended to cover all changes and modifications of the preferred embodiments of the invention, herein chosen for the purpose of illustration, which do not constitute departures from the spirit and scope of the invention.
I claim:
1. 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,
ii. connecting the lead-in conductors on one end of each filament-to spaced legs of a linking member, and
iii. connecting the lead-in conductors on the other end of each filament to spaced legs of a second linking member;
b. inserting the filament assembly into a lamp case to form a lamp assembly;
c. flushing the lamp assembly and press sealing the ends of the lamp case to form a sealed lamp assembly enclosing at least a portion of each of the legs of the linking members and at least a portion of each of the conductors, in the press seal with at least a portion of each of the linking members being external of the pressseal and the lamp case and at least a portion of each of the conductors being enclosed within the lamp case inward of the press seal and each of the filaments being entirely enclosed within the lamp case inward of the press seal; and
d. severing a linking member at at least one point on at least one end of the sealed lamp assembly external of the lamp case to separate at least two legs of the linking member whereby at least one portion of the severed linking member may be used for operation of at least one filament independent of the operation of the other filaments.
2. The process of claim 1 wherein the linking members are severed at both ends of the sealed lamp assembly to provide separate terminals for each filament.
3, The process of claim 1 wherein only one of the linking members is severed and further including the step of placing a cap on the end of the lamp with the non-severed linking member.
4. The process of claim 1 wherein one end of the lamp case is press sealed before flushing.
5. The process of claim 1 wherein flushing is begun before either end of the lamp case has been press sealed.
6. The process of claim 1 wherein flushing is begun before press sealing of either end, one end of the lamp is press sealed, and flushing is continued until the instant of the seal of the other end.

Claims (6)

1. 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, ii. connecting the lead-in conductors on one end of each filament to spaced legs of a linking member, and iii. connecting the lead-in conductors on the other end of each filament to spaced legs of a second linking member; b. inserting the filament assembly into a lamp case to form a lamp assembly; c. flushing the lamp assembly and press sealing the ends of the lamp case to form a sealed lamp assembly enclosing at least a portion of each of the legs of the linking members and at least a portion of each of the conductors in the press seal with at least a portion of each of the linking members being external of the press seal and the lamp case and at least a portion of each of the conductors being enclosed within the lamp case inward of the press seal and each of the filaments being entirely enclosed within the lamp case inward of the press seal; and d. severing a linking member at at least one point on at least one end of the sealed lamp assembly external of the lamp case to separate at least two legs of the linking member whereby at least one portion of the severed linking member may be used for operation of at least one filament independent of the operation of the other filaments.
2. The process of claim 1 wherein the linking members are severed at both ends of the sealed lamp assembly to provide separate terminals for each filament.
3. The process of claim 1 wherein only one of the linking members is severed and further including the step of placing a cap on the end of the lamp with the non-severed linking member.
4. The process of claim 1 wherein one end of the lamp case is press sealed before flushing.
5. The process of claim 1 wherein flushing is begun before either end of the lamp case has been press sealed.
6. The process of claim 1 wherein flushing is begun before press sealing of either end, one end of the lamp is press sealed, and flushing is continued until the instant of the seal of the other end.
US00237847A 1972-03-24 1972-03-24 Method for producing a multiple filamented cartridge lamp Expired - Lifetime US3791710A (en)

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JP (1) JPS498080A (en)
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FR (1) FR2177911B1 (en)
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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

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* 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 (en) * 1987-09-30 1997-03-19 日本ゼオン株式会社 Infusion supply container and infusion supply device using the same
JP2532757Y2 (en) * 1993-08-17 1997-04-16 正行 中家 Boiler for waste incineration
JP2533294Y2 (en) * 1993-08-17 1997-04-23 正行 中家 Boiler for waste incineration

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

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

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Owner name: STUDEBAKER-WORTHINGTON, INC., ILLINOIS

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Effective date: 19801229

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

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