US2542326A - Electric lamp and manufacture thereof - Google Patents

Electric lamp and manufacture thereof Download PDF

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Publication number
US2542326A
US2542326A US113654A US11365449A US2542326A US 2542326 A US2542326 A US 2542326A US 113654 A US113654 A US 113654A US 11365449 A US11365449 A US 11365449A US 2542326 A US2542326 A US 2542326A
Authority
US
United States
Prior art keywords
envelope
lead
butt
lamp
seal
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
US113654A
Other languages
English (en)
Inventor
Greiner Alfred
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 GB674507D priority Critical patent/GB674507A/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to US113654A priority patent/US2542326A/en
Priority to FR1024098D priority patent/FR1024098A/fr
Application granted granted Critical
Publication of US2542326A publication Critical patent/US2542326A/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
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/44—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp directly applied to, or forming part of, the vessel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/125—Deflectable by temperature change [e.g., thermostat element]
    • Y10T428/12507—More than two components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12597—Noncrystalline silica or noncrystalline plural-oxide component [e.g., glass, etc.]

Definitions

  • My invention relates to electric incandescent lamps or similar devices and to methods of manufacture thereof.
  • the invention is of particular utility in connection with the manufacture of electric incandescent lamps of the miniature type.
  • Electric incandescent lamps as manufactured at present are generally provided with a separate base member which is either cemented or mechanically afiixed to the glass envelope or bulb of the lamp.
  • a separate base member which is either cemented or mechanically afiixed to the glass envelope or bulb of the lamp.
  • the use of such a separate base member, together with the added lamp manufacturing or basing operations required to affix the base to the lamp bulb, adds to the total manufacturing cost of the finished lamp.
  • such added manufacturing cost usually represents a greater percentage of the total cost of the lamp than it does in the case of the larger type lamps.
  • Another object of my invention is to provide an electric incandescent lamp of novel and simple construction and which is relatively easy and inexpensive to manufacture.
  • Another object of my invention is to provide a novel method of manufacturing an electric incandescent lamp.
  • the lead-in wires of the mount for an electric incandescent lamp of the butt-seal type are provided with laterally extending relatively rigid outer portions having retroverted free ends, which outer leadin portions are sealed through the butt-seal of the lamp envelope to project laterally outward from the envelope wall and form terminal contacts for the lamp, the retroverted free ends of said outer lead-in wire portions re-entering and also being sealed in the butt-seal to firmly anchor them in place in the envelope wall.
  • Fig. 1 is a perspective view on an enlargedscale of an electric incandescent lamp comprising my invention
  • Fig. 2 is a longitudinal sectional view thereof
  • Fig. 3 is a transverse section on the line 3-3 of Fig. 2
  • Figs 4 and 5 are views illustrating, respectively. successive steps in the manufacture of an electric incandescent lamp according to the invention.
  • the lamp according to the invention is, in general, of the butt-seal type disclosed in U. S. Patent 1,742,153, Stiles et a1., and is fabricated in the same general way.
  • the lamp comprises a sealed glass envelope I consisting of a glass bulb 2 joined at its tubular neck end 3 to a glass exhaust tubulation 4 by a fused butt seal 5 (Fig. 2).
  • the envelope I is evacuated. and filled if desired with a suitable inert gas, through the exhaust tubulation 4 which afterwards is tippedoil as indicated at 6 to hermetically seal the envelope.
  • a lamp mount 1 similar to that employed in miniature lamps of the butt-seal type and comprising a pair of leadin wires 8-8 fused through a vitreous: bead 9, and a filament I0, preferably of tungsten wire, connected between the inner ends of the lead-in wires.
  • the lead-in wires 8-8 Adjacent the tubulated end of the envelope, the lead-in wires 8-8 are formed with laterally extending portions II-II which extend oppositely away from each other.
  • the said laterally extending wire portions IIII pass out through the envelope wall and are sealed through the fused butt-seal 5 of the lamp envelope I in the same manner as is customary in butt-seal lamps in general.
  • the lead-in wires 8-8 are made of silverplated iron containing a small percentage of carbon, e. g., .05 per cent, and they are of a diameter large enough (e. g, around /2 millimeter. to possess the required rigidity to permit the use of their projecting outer ends as terminal contacts.
  • the glass envelope I is made of a suitable lowmelting point glass which matches the expansion characteristics of the lead-in wires 88 and which readily wets and seals thereto.
  • a soft lead glass of approximately the following composition to be particularly suitable:
  • the laterally extending portions II--II of the lead-in wires 88 project laterally outward of and beyond the envelope wall from the points where they pass therethrough and are retroverted or bent back upon themselves outwardly'of the envelope, as indicated at I2, to form terminal contact loops I3--I3 which protrude from opposite sides of the envelope and the planes of which are approximately transverse to the axis of the bulk neck and preferably coincident with each other.
  • retroverted or free ends ll-il of the lead-in wires extend generally parallel to and are preferably spaced from the seal portions ll-ll of the wires, and they re-enter and are sealed into the butt-seal in the envelope wall to firmly anchor the said retroverted ends ll-H in place in said wall and additionally rigidify or support the contact loops l3-l8 from the envelope.
  • the lamp according to the invention is preferably made by first fabricating the mount 1 to final form, with its laterally extending lead-in wire portions ll-H provided with the contact loops l3-l3. With the glass bulb 2 supported in an inverted position with its open neck end 8 up as shown in Fig. 4, the finished mount 1 is inserted in the bulb in the manner shown with its laterally extending lead-in wire portions II- resting on the upper edge ii of the bulb neck. A length of glass exhaust tubing I8 is then brought down endwlse to and in alignment with the open end of the bulb neck 3, as shown in Fig. 4, and is fused thereto at 5 and drawn out to a rather small exhaust neck I! fairly close above the fused butt-seal joint 5, as shown in Fig.
  • Patent 1,742,153 forming an end enclosure or exhaust tubulation 4.
  • the envelope I is then exhaust and, if desired, charged with any suitable inert gas, after which the tube is is heated and softened, and fused and sealed-off at the neck l1, thus completing the end enclosure of exhaust tubulation l with the central outward projecting exhaust or seal tip 6 as shown in Fig. 1.
  • An electric device comprising a sealed glassenvelope, an electrical energy translation device in said envelope, a pair of lead-in wires connected to said translation device and having relatively ri id outer portions extending and sealed through the wall of said envelope, said lead-in w res projecting laterally outward from and beyond the envelope wall and being retroverted outwardly of the envelope to form protruding terminal contacts for the lamp, the retroverted ends of said lead-in wires re-entering and being sealed in the envelope wall to anchor them therein.
  • An electric device comprising a sealed glass envelope, an electrical energy translation device in said envelope, a pair of lead-in wires connected to said translation device and having relatively rigid outer portions extending and sealed through the wall of said envelope at opposite sides thereof, said lead-in wires projecting laterally outward of and beyond the envelope wall from their envelope seals and being retroverted outwardly of the envelope to form protruding looped terminal contacts on opposite sides of the envelope, the retroverted ends of said lead-in wires re-entering and being sealed in the envelope wall to anchor them therein.
  • An electric device of the butt-seal type having a sealed envelope comprising a glass bulb joined to a glass tubulation by a fused butt-seal, an electrical energy translation device in said envelope, a pair of lead-in wires connected to said translation device and having relatively rigid outer portions extending through the wall of said envelope and sealed in the butt-seal therein, said lead-in wires projecting laterally outward from and beyond the envelope wall and being retroverted outwardly of the envelope to form protruding terminal contacts for the lamp, the retroverted ends of said lead-in-wires re-entering and being sealed into the said butt-seal in the envelope wall to anchor them therein.
  • An electric device of the butt-seal type having a sealed envelope comprising a glass bulb joined to a glass tubulation by a fused butt-seal, an electrical energy translation device in said envelope, a pair of lead-in'wires connected to said translation device and having relatively rigid outer portions extending through the wall of said envelope at opposite sides thereof and sealed in the butt-seal therein, said lead-in wires projecting laterally outward of the envelope from their envelope seals and being retroverted outwardly of the envelope to form protruding looped terminal contacts on opposite sides of the envelope, the retroverted ends of said lead-in wires re-entering and being sealed into the said butt-seal in theenvelope wall to anchor them therein.
  • An electric incandescent lamp of the butt seal type having a sealed envelope comprising a glass bulb provided with a neck portion joined to a glass exhaust tubulation by a fused butt-seal, a filament in said envelope, a pair of lead-in wires connected to said filament and having relatively rigid outer portions extending through the wall of said envelope at opposite sides thereof and sealed in the butt-seal therein, said outer lead-in wire portions projecting laterally outward from and beyond the envelope wall and being retroverted outwardly of the envelope to form protruding lamp terminal contact loops the planes of which are transverse to the axis of the bulb neck, the retroverted ends of said outer lead-in wire portions re-entering and being sealed into the said butt-seal in the envelope wall.

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  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Resistance Heating (AREA)
US113654A 1949-09-01 1949-09-01 Electric lamp and manufacture thereof Expired - Lifetime US2542326A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB674507D GB674507A (enrdf_load_stackoverflow) 1949-09-01
US113654A US2542326A (en) 1949-09-01 1949-09-01 Electric lamp and manufacture thereof
FR1024098D FR1024098A (fr) 1949-09-01 1950-08-29 Perfectionnements à la fabrication des lampes électriques miniatures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US113654A US2542326A (en) 1949-09-01 1949-09-01 Electric lamp and manufacture thereof

Publications (1)

Publication Number Publication Date
US2542326A true US2542326A (en) 1951-02-20

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ID=22350743

Family Applications (1)

Application Number Title Priority Date Filing Date
US113654A Expired - Lifetime US2542326A (en) 1949-09-01 1949-09-01 Electric lamp and manufacture thereof

Country Status (3)

Country Link
US (1) US2542326A (enrdf_load_stackoverflow)
FR (1) FR1024098A (enrdf_load_stackoverflow)
GB (1) GB674507A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860274A (en) * 1955-07-21 1958-11-11 British Thomson Houston Co Ltd Electrical lamps
US2924735A (en) * 1957-01-31 1960-02-09 Westinghouse Electric Corp Incandescent lamp
US2937308A (en) * 1955-09-07 1960-05-17 British Thomson Houston Co Ltd Electric lamps
DE1229184B (de) * 1959-10-02 1966-11-24 Gen Electric Verfahren zur Herstellung einer Stuetze fuer Leuchtkoerper elektrischer Lampen und Gluehkoerper elektrischer Geraete
US4088918A (en) * 1976-07-06 1978-05-09 Gte Sylvania Incorporated Incandescent lamp having embedded support wires

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US277646A (en) * 1883-05-15 Edward weston
US1923144A (en) * 1931-03-13 1933-08-22 Elmer J Graf Illuminated ornamental device for decorative purposes
GB472753A (en) * 1937-05-19 1937-09-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Improvements in or relating to caps for electric incandescent lamps or the like
US2120087A (en) * 1935-10-01 1938-06-07 Elliott I Clemence Electric light bulb

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US277646A (en) * 1883-05-15 Edward weston
US1923144A (en) * 1931-03-13 1933-08-22 Elmer J Graf Illuminated ornamental device for decorative purposes
US2120087A (en) * 1935-10-01 1938-06-07 Elliott I Clemence Electric light bulb
GB472753A (en) * 1937-05-19 1937-09-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Improvements in or relating to caps for electric incandescent lamps or the like

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860274A (en) * 1955-07-21 1958-11-11 British Thomson Houston Co Ltd Electrical lamps
US2937308A (en) * 1955-09-07 1960-05-17 British Thomson Houston Co Ltd Electric lamps
US2999180A (en) * 1955-09-07 1961-09-05 British Thomson Houston Co Ltd Electric lamps
US2924735A (en) * 1957-01-31 1960-02-09 Westinghouse Electric Corp Incandescent lamp
DE1229184B (de) * 1959-10-02 1966-11-24 Gen Electric Verfahren zur Herstellung einer Stuetze fuer Leuchtkoerper elektrischer Lampen und Gluehkoerper elektrischer Geraete
US4088918A (en) * 1976-07-06 1978-05-09 Gte Sylvania Incorporated Incandescent lamp having embedded support wires
US4149103A (en) * 1976-07-06 1979-04-10 Gte Sylvania Incorporated Incandescent lamp having embedded support means

Also Published As

Publication number Publication date
GB674507A (enrdf_load_stackoverflow)
FR1024098A (fr) 1953-03-27

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