US2191346A - Electric lamp or similar device and method of manufacture - Google Patents
Electric lamp or similar device and method of manufacture Download PDFInfo
- Publication number
- US2191346A US2191346A US139912A US13991237A US2191346A US 2191346 A US2191346 A US 2191346A US 139912 A US139912 A US 139912A US 13991237 A US13991237 A US 13991237A US 2191346 A US2191346 A US 2191346A
- Authority
- US
- United States
- Prior art keywords
- lamp
- thimble
- envelope
- thimbles
- filament
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K5/00—Lamps for general lighting
- H01K5/02—Lamps for general lighting with connections made at opposite ends, e.g. tubular lamp with axially arranged filament
-
- 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
- H01J5/42—End-disc seals, e.g. flat header using intermediate part
-
- 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
- H01J5/44—Annular seals disposed between the ends of the vessel
-
- 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
-
- 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
- H01K3/20—Sealing-in wires directly into the envelope
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0034—Lamp bases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
- H01J2893/0034—Lamp bases
- H01J2893/0036—Lamp bases having wires, ribbons or tubes placed between two vessel walls and being perpendicular to at least one of said walls
Definitions
- My invention relates to electric lamps or simllar devices comprising a bulb or envelope having an electric energy translation element sealed therein and to methods of manufacturing the same. More particularly, my invention relates to electric incandescent lamps 'of the miniature type comprising an electric energy translation element sealed in a glass envelope. Although not limited thereto, my invention is particularly adapted to devices having terminal contact members at different portions thereof, an example of which is the double-ended lamp, the terminal contact members of which are located at opposite ends. The lamp comprising my invention is particularly adapted for use in strings for various decorative purposes such as Christmas tree ornamentation, although .lt may be used for other purposes, such as automobile, dome or dash lighting.
- the lamp bulb is provided with a neck portion to which a metallic thimble or endcontact member is sealed.
- the filament is electrically connected to said thimble and is supported thereby.
- the bulb is preferably evacuated through a, small orifice or aperture in the thimble, and the latter subjected to heat to thereby melt a small q antity of glass, solder or other fusible material disposed adiacent said orifice, which material th 1n fiows into and closes the evacuation orifice to thereby hermetically seal the bulb.
- a further object of my invention is the provision of an electric miniature lamp which can be easily and economicallymade, and which requires a minimum number of operations in the manufacture 'of the same.
- a still further object of my invention is toprovide a method .for the manufacture of electric miniature lamps which method eliminates the customary basing and exhaust tubulationoperations heretofore required in the manufacture of lamps of the butt-sealed type.
- Figs. 1 to 4 are sectional views illustrating the successive steps involved inthe manufacture of a lamp according to one form of the invention
- FIG. 5 is an elevation of the lamp shown in Fig. 4;
- Figs. 6 and 7 are sectional views of modified forms of thimble construction adapted for use in the lamp shown in Fig. 4;
- Figs. 8 to 11 are sectional views illustrating the successive steps involved in 5 the manufacture of a lamp according to another form of the invention;
- Fig. 12 is a perspective view of a modified form of end contact member or thimble construction adapted for use in the lamps shown in Figs. 4 and 11:
- Figs. 13 to 15 are 10 sectional views illustrating the successive steps involved in the manufacture of a lamp according to still another form of the invention; and
- Fig. 13 to 15 are 10 sectional views illustrating the successive steps involved in the manufacture of a lamp according to still another form of the invention; and Fig.
- 16 is a view illustrating one form of apparatus suitable for simultaneously evacuatin and seal- 15 log the orifice of a lamp constructed inaccordance with my invention.
- the lamp there shown comprises a filament mount I! (Fig. 2) sealed within a 20 glass bulb ii.
- the filament mount comprises a pair of cylindrical end contact members or metallic thimbles l2, it, the open ends of which face each other and to-which filament support wires I, ll are spot welded.
- the ends of a filament II are fastened to the support wires it, It.
- the thimbles l2, I! are preferably made ofchrome iron or some other suitable metal having a coefficient of expansion approximating that of the glass used for the bulb ll.
- Thimble i8 is provided with a small orifice or aperture il in the end wall It thereof, through which evacuation of the bulbis effected. .-It will be noted that the support wire it; whleh'is spot welded-to thimble II, is formed with a bent portion it for the 'puras pose of positioning the weld at the side of and a slight distance awayfrom the orifice ll, thereby insuring the maintenance of such opening.
- the fusible material having been placed on or within the thimble ll, the.entire filament mount II isthen inserted in the bulb ll through one of the cylindrical open ends or neck portions 2
- , II are made slightly larger than the outside diameter-of the thimbles If, It, thus permitting the latter to slide freely therethrough.
- the filament mount has been centered 01'' positioned within the bulb so that the neck portions 2
- the lamp is then ready for evacuation, which is preferably can-fell out in a mum chamber, although the same may be effected in any other known manner.
- the apertured thimble I 3 provided with the fusible material 26 is heated with an induction heater or in any other suitable manner, thereby melting the fusible material which then flows into the orifice or aperture ll, closing the same and hermetically sealing the lamp.
- the finished lamp produced by the above-described method, and shown in elevation in Fig. 5, can thus be made in a simple and economical manner, requiring a minimum number of manufacturing operations.
- Figs. 6 and 7 illustrate alternate methods of disposing the fusible material 20 on or within the thimble fl and closely adjacent the orifice l'l therein.
- the fusible material 26' is in the form of a ring 22 disposed within the thimble II and provided with an opening corresponding to the orifice II in the thimble.
- the ring of material 22 is adapted to seat on the end wall ll of the thimble. and is preferably fastened securely to such thimble by fusion or in some other way.
- the fusible material 20 is disposed on the outside of the thimble I I, and is likewise in the form of a ring 2!
- Figs. 8 to 11 I have illustrated a diiferent method of manufacturing a lamp comprising my invention.
- the filament mount 2! (Fig. 8) is similar to the mount I I except for the thimble II which; in this case, is first sealed by itself to one of the neck portions II of the bulb. Instead of the thimble it being attached to support wire II, a bead of solder or other current-conveying fusible material 26 is securely fastened to the end thereof.
- the filament mount 2! is inserted within the bulb it through the open end 21 thereof and positioned therein so that the bead of solder 26 is disposed in close proximity to the orifice I! in thimble IS.
- the thimble I2 is then fused or sealed to the surrounding bulb neck portion Ii by the application of heat thereto.
- the bulb is then evacuated and the thimble ll subjected to heat in the same manner as described in connection with Figs. 1 to 4. This heat causes the bead of solder II to melt and fiow into the orifice ll. thereby closing the same and hermetically sealing the lamp.
- the solder or other current-conveying material it establishes the electrical connection between the thimble II and the lead wire II and associated filament mount II.
- FIG. 12 A modified form of thimble constructionis illustrated in Fig. 12, in which a filament supporting tongue II extends from t P end rectly fastened, thereby dispensing with the filament support wires I4 and II.
- This particular form of thimble may be” used in either of the lamps shown in Figs. 4 and 11.
- Figs. 18 to 15 I have illustrated still another method of manufacturing a lamp according to my invention.
- the thimbles l2, I! are inverted so that their open ends extend outwardly of the lamp instead of inwardly, as in the previous forms.
- the filament mount 30, in this modification comprises a pair of thimbles I 2, I2 and a filament l6 extending therebetween and connected to said thimbles by support wires H, H spot-welded to the end walls II, II of the thimbles.
- the filament mount 36 is inserted within the bulb ll through one of the open ends thereof, and centered within the same.
- one of the thimbles I2 is fused or sealed to the surrounding bulb neck portion II by the application of heat to such neck portion.
- the lamp is then evacuated at 2 the opposite end through the small clearance space provided between the cylindrical walls of the unsealed thimble l2 and the surrounding bulb neck portion 2
- the evacuation 80 may be accomplished, if desired, through an exhaust tube 3
- This exhaust tube is preferably provided on the bulb by simply leaving a sufilcient length of the original glass tube from which the bulb was blown. Evacuation of the bulb having been completed by either of the above methods, the bulb neck portion 2
- the evacuating device comprises a housing 32, which may be made of glass, and a base 83 on which the housing is adapted to seat to form a vacuum-tight joint 34 so therebetween.
- the base I! is formed with an exhaust tube ll opening into the housing 32, and is further provided with relatively heavy current-supplying leads 36, 36.
- a lamp-supporting mounting 31 extends between said leads and so is forined with a heating coil 86 adapted to receive one of the thimbles of-a lamp. The upper extremity of one of said leads 8.
- a supplementary lamp supporting bracket 39 adapted to fit over the upper end of the lamp or to be exhausted, and insulated from the metallic thimble at such upper end.
- a miniature electric lamp comprising a double-ended glass envelope having tubular end portions, a pair of tubular thimble-shaped metallic end contact members fused along their sides directly to the walls of the end portions of said envelope and forming part of the envelope, and a filament united at its ends to said end contact members and supported solely thereby.
- a miniature electric lamp comprising a double-ended glass envelope having tubular end portions, a pair of tubular thimble-shaped metallic and contact members fused along their sides directly to the walls of the endportions of said envelope and forming part of the envelope, one of said members being provided with an aperture in the end wall thereof, a filament united at its ends to said end contact members and supported solely thereby, and a quantity of fusible material disposed within said aperture to thereby close the same and hermetically seal said envelope.
- a miniature electric lamp comprising a double-ended glass envelope having tubular end portions, a pair of tubular thimble-shaped metallic end contact members fused along their sides directly to the walls of the end portions of said envelope and forming part of the envelope, one of said members being provided with an aperture in the end wall thereof, lead wires united to said end contact members, a filament fastened at its ends to said lead wires and supported solely thereby. and a quantity of fusible material disposed within said aperture to thereby close the same and hermetically seal said envelope.
- a miniature electric lamp comprising a double-ended glass envelope having tubular end portions, 9. pair of tubular thimblershaped metallic end contact members fused along their sides directly to the walls of the end portions of said envelope and forming part of the envelope, one of said members being provided with an aperture in the end wall thereof, lead wires electrically connected to said end contact member, a filament fastened at its ends to said lead wires and supported solely thereby, and a quantity of fusible material electrically connecting one of said lead wires to the apertured end contact member and closing said aperture to thereby seal said envelope.
- a miniature electric lamp comprising a double-ended glass envelope having tubular end portions. a pair of open-ended tubular metallic thimblesfused along their sides directly to the walls 01 the end portions of said envelope with their open .ends extending inwardly of the same and forming part of the envelope, and a filament united at its ends to said thimbles and supported solely thereby.
- a miniature electric lamp comprising a double-ended glass envelope having tubular end portions, a pair of open-ended tubular metallic thimbles fused along their sides directly to the walls of the end portions of said envelope with their open ends extending outwardly of the same and forming part of the envelope, and a filament united at its ends to said thimbles and supported solely thereby.
- a miniature electric lamp comprising a double-endedglass envelope, a pair of open-ended metallic thimbles sealed directly to the ends of said envelope with their open ends extending inwardly of the same, one of said thimbles being provided with an aperture in the end wall thereof, a filament fastened at its ends to said thimbles and supported solely thereby, and a quantity of fusible material disposed within said aperture to thereby close the same and hermetically seal said envelope.
- a miniature electric lamp comprising a double-ended glass envelope, a pair of open-ended metallic thimbles sealed directly to the ends of said envelope with their open ends extending inwardly of the same, one of said thimbles being provided with an aperture in the end wall thereof, lead wires electrically connected to said thimbles, a filament fastened at its ends to said lead wires and supported solely thereby, and a quantity of fusible material electrically connecting one of said lead wires to the apertured thimble and closing said aperture to thereby seal said envelope.
- the method of manufacturing electrical devices which consists in forming a filament mount by uniting the opposite ends of a filament to metal thimbles, one of which is provided with an orifice and a quantity of fusible material adjacent said orifice, inserting said filament mount within a container having opposed openings therein by drawing said mount longitudinally through one of said openings until said thimbles are located one adjacent each of said openings. fusing said container to said thimbles, exhausting said container through said orifice, and applying heat to said fusible material to cause the same to fiow into and hermetically seal said orifice.
- the method of manufacturing electrical devices which consists in forming a filament mount by uniting the opposite ends of a filament to metal thimbles, inserting said mount into a doubleended container by drawing it longitudinally through one'oi' the open ends thereof until said "thimbles are located one adjacent each of said open ends of the container, sealing one end of said container to one of said thimbles, exhausting said container through the other unsealed end thereof around the other thimble, and fusing the said unsealed end of said container to the said other thimble.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE427839D BE427839A (xx) | 1937-04-30 | ||
NL53701D NL53701C (xx) | 1937-04-30 | ||
CH53701A CH53701A (de) | 1937-04-30 | 1910-10-03 | Heuerntemaschine mit automatischer Verstellung und Festlegung des Zinkenwinkels |
US139912A US2191346A (en) | 1937-04-30 | 1937-04-30 | Electric lamp or similar device and method of manufacture |
FR837237D FR837237A (fr) | 1937-04-30 | 1938-04-28 | Perfectionnements à la fabrication des lampes électriques |
GB12725/38A GB514264A (en) | 1937-04-30 | 1938-04-28 | Improvements in and relating to electric lamps and the like |
DE1938P0077204 DE687262C (de) | 1937-04-30 | 1938-04-29 | Verfahren zur Herstellung von zweisockeligen elektrischen Gluehlampen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US139912A US2191346A (en) | 1937-04-30 | 1937-04-30 | Electric lamp or similar device and method of manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
US2191346A true US2191346A (en) | 1940-02-20 |
Family
ID=22488857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US139912A Expired - Lifetime US2191346A (en) | 1937-04-30 | 1937-04-30 | Electric lamp or similar device and method of manufacture |
Country Status (7)
Country | Link |
---|---|
US (1) | US2191346A (xx) |
BE (1) | BE427839A (xx) |
CH (1) | CH53701A (xx) |
DE (1) | DE687262C (xx) |
FR (1) | FR837237A (xx) |
GB (1) | GB514264A (xx) |
NL (1) | NL53701C (xx) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2427711A (en) * | 1945-02-16 | 1947-09-23 | Gen Electric | Electric lamp and seal therefor |
US2449650A (en) * | 1947-10-01 | 1948-09-21 | Gen Electric | Incandescent lamp and method of manufacture |
US2453986A (en) * | 1945-05-07 | 1948-11-16 | Gen Electric | Circular electric lamp |
US2787510A (en) * | 1951-03-01 | 1957-04-02 | Gen Electric Co Ltd | Manufacture of electrical devices having gas-filled sealed envelopes |
US3040204A (en) * | 1960-03-04 | 1962-06-19 | Donald J Belknap | Microminiature incandescent lamp |
US3221386A (en) * | 1960-07-07 | 1965-12-07 | Ohmega Lab | Method of making an electrical device comprising a glass capsule and a wire lead fused therein |
US3271093A (en) * | 1960-06-10 | 1966-09-06 | Westinghouse Electric Corp | Method for making incandescent lamps |
DE1234313B (de) * | 1958-09-26 | 1967-02-16 | Sylvania Electric Prod | Verfahren zur Herstellung einer Schweissverbindung zwischen den Strom-zuleitungsdraehten und den Sockelkontakten einer elektrischen Lampe |
US3505556A (en) * | 1966-07-08 | 1970-04-07 | Donald J Belknap | Cylindrical miniature incandescent lamps and methods of making the same |
US3646387A (en) * | 1970-05-26 | 1972-02-29 | Gen Electric | Electric incandescent lamp with tapered sealing collar |
US3864590A (en) * | 1973-12-10 | 1975-02-04 | Rca Corp | Electron discharge device having a hollow conductor integral with the envelope thereof |
US3914640A (en) * | 1971-05-28 | 1975-10-21 | Donald J Belknap | Incandescent lamps having preformed filament units |
US5127864A (en) * | 1991-03-21 | 1992-07-07 | Gte Products Corporation | Method of making a double ended lamp |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1069779B (xx) * | 1959-11-26 | |||
DE1184136B (de) * | 1960-07-09 | 1964-12-23 | Heinrich Sprehe | Heuwerbungsmaschine |
-
0
- BE BE427839D patent/BE427839A/xx unknown
- NL NL53701D patent/NL53701C/xx active
-
1910
- 1910-10-03 CH CH53701A patent/CH53701A/de unknown
-
1937
- 1937-04-30 US US139912A patent/US2191346A/en not_active Expired - Lifetime
-
1938
- 1938-04-28 FR FR837237D patent/FR837237A/fr not_active Expired
- 1938-04-28 GB GB12725/38A patent/GB514264A/en not_active Expired
- 1938-04-29 DE DE1938P0077204 patent/DE687262C/de not_active Expired
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2427711A (en) * | 1945-02-16 | 1947-09-23 | Gen Electric | Electric lamp and seal therefor |
US2453986A (en) * | 1945-05-07 | 1948-11-16 | Gen Electric | Circular electric lamp |
US2449650A (en) * | 1947-10-01 | 1948-09-21 | Gen Electric | Incandescent lamp and method of manufacture |
US2787510A (en) * | 1951-03-01 | 1957-04-02 | Gen Electric Co Ltd | Manufacture of electrical devices having gas-filled sealed envelopes |
DE1234313B (de) * | 1958-09-26 | 1967-02-16 | Sylvania Electric Prod | Verfahren zur Herstellung einer Schweissverbindung zwischen den Strom-zuleitungsdraehten und den Sockelkontakten einer elektrischen Lampe |
US3040204A (en) * | 1960-03-04 | 1962-06-19 | Donald J Belknap | Microminiature incandescent lamp |
US3271093A (en) * | 1960-06-10 | 1966-09-06 | Westinghouse Electric Corp | Method for making incandescent lamps |
US3221386A (en) * | 1960-07-07 | 1965-12-07 | Ohmega Lab | Method of making an electrical device comprising a glass capsule and a wire lead fused therein |
US3505556A (en) * | 1966-07-08 | 1970-04-07 | Donald J Belknap | Cylindrical miniature incandescent lamps and methods of making the same |
US3646387A (en) * | 1970-05-26 | 1972-02-29 | Gen Electric | Electric incandescent lamp with tapered sealing collar |
US3914640A (en) * | 1971-05-28 | 1975-10-21 | Donald J Belknap | Incandescent lamps having preformed filament units |
US3864590A (en) * | 1973-12-10 | 1975-02-04 | Rca Corp | Electron discharge device having a hollow conductor integral with the envelope thereof |
US5127864A (en) * | 1991-03-21 | 1992-07-07 | Gte Products Corporation | Method of making a double ended lamp |
Also Published As
Publication number | Publication date |
---|---|
CH53701A (de) | 1912-03-16 |
FR837237A (fr) | 1939-02-06 |
GB514264A (en) | 1939-11-03 |
BE427839A (xx) | |
NL53701C (xx) | |
DE687262C (de) | 1940-01-26 |
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