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US2403137A - Basing for electric lamps and the like - Google Patents

Basing for electric lamps and the like Download PDF

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Publication number
US2403137A
US2403137A US492988A US49298843A US2403137A US 2403137 A US2403137 A US 2403137A US 492988 A US492988 A US 492988A US 49298843 A US49298843 A US 49298843A US 2403137 A US2403137 A US 2403137A
Authority
US
United States
Prior art keywords
shell
neck
contact
screw
bulb
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
US492988A
Other languages
English (en)
Inventor
Royal F Strickland
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 NL65240D priority Critical patent/NL65240C/xx
Priority to BE478104D priority patent/BE478104A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US492988A priority patent/US2403137A/en
Priority to GB12642/44A priority patent/GB586733A/en
Application granted granted Critical
Publication of US2403137A publication Critical patent/US2403137A/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
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap

Definitions

  • This invention relates to basing the bulbs or envelopes of electrical various kinds, which at present generally have vitreous envelopes.
  • the main attachment of the base to the lamp bulb is made by direct mechanical engagement of a base shell with a lamp bulb, by screwing the shell directly on the bulb end or neck, without any need of basing cement.
  • Fig. 1' is a sidevie'w of a.
  • Fig; 2 is a-similar but tilted view of a base for this lamp, partof the screwshell being broken out to reveal its interior; and Fig; 3 is a fragmentary tilted-view, partly sectional, showingthe application ot'the base to the lamp.
  • Fi g 4- is a fragmentary side view illustrating a modified construction, the base being shown in section'and the lamp bulb neck to which it is applied inelevation Fig, 5is a similar view illustrating another modification; and Fig. 6' is ari ex'.'- ploded tilted view of the parts of the base shown inFig 5; I 1
  • Fig.- 1' shows arr-ordinary type of electric lamp L whose bulb end or neck I0 is externally screw threaded at ll in a manner suitable for the purposes of 7 my invention.
  • V v As illustrated, the end of the bulb neck I'llis closed; and the construction is of an ordinary type comprising a stem flare l 2 tused a-ndsealed to'the-neck at l 3-and itself closed at its'inn'er end by a pressed seal- 4 throughwhichv are sealed-- the current lead wires l5, Hi to the electrictranslation means of the device,- such as an incandescent coiled coil tungsten filament I 1 suitably mounted in thebulb l0.
  • An exhaust tube I8 isshown as opening through the seal or suitable or preferredmanner: for example, they may be iormedjust-after sealingin. by placing the bulb neck (while still hot. and soft) in a mold of suitable internal conformation and blowing airinto the bulb through the' tube l8. This,
  • the bulb or; envelope L differ greatly from what isdisclosed-in such U. S ⁇ patents as Nc. 1,650,289 to McGinley and N0. 2,066,317 to 7 Blake and Geiger-though the described. method of forming the threaded part II is difierent from those set forth in these patents.
  • Fig. 2 shows one form of lamp base B that is 5 suitable for the purposes of my1invention,'be-r ing an Edison screw base comprising a sheet metal screw contact shell or skirt 20 with "an insulative body, web, or button 2i (such as glass)v As in present commercial 1 at one end thereof.
  • the contact disc or flange 25 has 30 a" notch or I periphery to o slit 21 extending inward from i atone (cou terclockwise) side'of the slit 21 is raised or turned up at 28, above that at the other side of the slit, over an angular width of a few; degrees v(counterclockwise) around the disc.
  • The'slitted feature of the center contact 25, and its use as hereinafter described in electrically connecting the center lead It to this coni 4 tact-these correspond essentiallyto what is disclosed in the application ofJohn J. Malloy, Serial No. 447.818, filed June20, 1942, now Patent n asscgssc, assigned to the assignee of this e 'plicatio n. 7 a V, 7 V
  • thelamp lead which is to be the side lead to thescrew shell is bent outward across the sealed neck end 13 and back lengthwise of the neck"), to extend crosswise of the screw threads I 50 H and even somewhat beyond them.
  • the lamp lead l6 which is to be the center lead to the end contact may beleft extending straight outward from the neck end l3.
  • the bulb neck or groove extending. fromthe beginning of the threads: H outside the. seal l3 across the threaded zone and even slightly beyond, to accommodate the side lead l5 when retroverted as above mentioned. groove appear best in Fig. 3, which shows the base B installed on the lamp bulb L.
  • the groove 30 is not here shown as of uniform depth below theundulatory general surface of the glass across the threaded area, its bottom, neverthe- 65 less, has undulations corresponding with those of the general surface, though of much smaller amplitude: i e., the groove 30 cuts almost if not quite through the full depth of the protuberant thread ridges, but is only slightly sunk into f the bottoms of the thread valleys at 3
  • the adhesive applied to the screw shell 'at'33 or to the bulb neck at 34 may beofany kind that will form a thin filmand will when dry, hard, or curedf bond the parts together against'unscrewing from one anotherin service;
  • the construction illustrated in. Fig. 4; differs from that of Figs.:13'both as regards the connections ,of the leads l5, l,6jto the shell and center contacts and also as regards the attachment of the insulative base end 2Ia to the screw shell Mat-corresponding in-this latter respect substantially to what is disclosed in U. S. Patent 2,210,525 to Carl A. Brown and Clarence E. Hahn. Accordingly, the insulative base end 2
  • a bevelled button preferably glasslthat is cen--v trally apertured at 26a for passage of the center lead-wire l6 and is peripherally engaged and seated in and against an annular seat 35 formed at the outer.
  • the button 2la may be peripherally gripped and secured in the seat 35 by spinning in the outer annular corner of the seat on the bevelledbutton edge, as shown at 36.
  • the side lead 15 is not retroverted as in Figs. 1 and 3, but extends from the neck end l3 to the shell-end seat 35, where it bends outward under the button 2la and then across its outer edge as shown, being thus held clamped into electrical contact with this shell portion 35 by the grip of the annular corner or margin 36 of the seat 35 on the button.
  • the end contact a is shown as a mere cap whose annular wall (which may be crimped as shown) is wedged fast and thus clamped in a corresponding annular groove 31 in the outer side of the insulator 2la concentric with the lead hole 26a, as shown in U. S. Patents 2,047,043, granted to me July '7,
  • the center lead I6 is shown as secured and electricallyconnected to the end contact 25a by being clamped between the insulator 2la and the interior surfaces of the contact cap 25a as in the two patents last cited.
  • the side lead l5 not being retroverted between the screw shell 20a and the bulb neck portion I 2, the groove 30 of Figs. 1 and 3 is entirely superfluous, and
  • Fig. 5 differsv from that of Fig. 4 in having its insulative base end or button 2 lb secured in the screw shell seat 35b by snap action; in having its center contact 25b also snap-fastened to the insulator 2 lb; and in having the leads I5, I 6 clamped into electrical contact with the shell and center contacts 20b, 25b by the elastic action of the snap fastenings all as shown in U. S. application Serial No. 456,351, filed August 27, 1942, by Paul O. Cartun, now Patent No. 2,336,529.
  • the plain annular wall of the insulator seat 35b is interrupted by the punching out of a few isolated spring fingers 31 (three being shown) whose free lower ends are bent inward to snap into corresponding bevel-shouldered notches 38 in the insulator 2lb when the latter is put in place and pushed home in the seat 35b.
  • a few isolated spring fingers 31 three being shown
  • the center contact 25b consists of a disc-like head with a hollow sh'ank .iwhichlre shew iwithae mrne t eve ed heu ers -at, their freeglower ends, for snapping-outward :be- .h n h .,-s 0 er o t .tqp nsfi wh n h contact is. pushed home; into the opening.
  • the contact 25b may :be formed, of sheet-metal by a die-pressingand drawing operation, the margin of its head being formedbydoubling under the sheet metal as. shown in Fig. 5.
  • connection of the side lead l5 to the screw shell 201) may be made by simply passing the lead through the shell 2% when the base B is put on the bulb neck, and then bending the lead I 5 aside so that it will be clamped between the shell portion 35b and the insulator'2lb, when thelatter is snapped into place, by the elastic snap action of the resilient fingers 31. Afterward, the wire l5 may be cut off about as shown at 42.
  • connection of the center lead Hi to the contact 25 may be made in a similar way, by passing this lead through the insulator opening 39 when the base B is put on the bulb neck and bending the lead aside, so that it willbe clamped between the contact 251) and the flat outer surface of the insulator Zlb when contact is snapped into place, by the elastic snap action of the spring fingers 40. Afterward, the wire [6 may be cut off as indicated at 43.

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
US492988A 1943-07-01 1943-07-01 Basing for electric lamps and the like Expired - Lifetime US2403137A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL65240D NL65240C (xx) 1943-07-01
BE478104D BE478104A (xx) 1943-07-01
US492988A US2403137A (en) 1943-07-01 1943-07-01 Basing for electric lamps and the like
GB12642/44A GB586733A (en) 1943-07-01 1944-07-03 Improvements in and relating to bases for electric lamps and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US492988A US2403137A (en) 1943-07-01 1943-07-01 Basing for electric lamps and the like

Publications (1)

Publication Number Publication Date
US2403137A true US2403137A (en) 1946-07-02

Family

ID=23958436

Family Applications (1)

Application Number Title Priority Date Filing Date
US492988A Expired - Lifetime US2403137A (en) 1943-07-01 1943-07-01 Basing for electric lamps and the like

Country Status (4)

Country Link
US (1) US2403137A (xx)
BE (1) BE478104A (xx)
GB (1) GB586733A (xx)
NL (1) NL65240C (xx)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732532A (en) * 1956-01-24 Lamp jrase
US2733419A (en) * 1956-01-31 Means for securing a lead wire to an electric lamp ease
US2736874A (en) * 1951-12-26 1956-02-28 Gen Electric Electric lamp
US2738476A (en) * 1954-11-29 1956-03-13 Adolph P Buquor Flashbulb holder and ejector
US2751566A (en) * 1954-11-29 1956-06-19 Adolph P Buquor Safety plug and keeper for magnetic socket
US2896306A (en) * 1953-06-30 1959-07-28 Westinghouse Electric Corp Lamp fabrication
US2913697A (en) * 1956-06-19 1959-11-17 Westinghouse Electric Corp Electric lamp base
US2987696A (en) * 1957-10-24 1961-06-06 Gen Electric Lamp base with collared insulator
US3840954A (en) * 1971-03-22 1974-10-15 Westinghouse Electric Corp Method of manufacturing and assembling an electric lamp base
US4134630A (en) * 1978-05-25 1979-01-16 Bulbex Corporation Process for repairing lead-in wires of electric light bulbs
US4565944A (en) * 1982-12-07 1986-01-21 U.S. Philips Corporation Electric lamp
EP0381269A1 (en) * 1989-01-31 1990-08-08 Koninklijke Philips Electronics N.V. Electric lamp
US5306179A (en) * 1993-04-09 1994-04-26 General Electric Company Lamp base and method of forming same
US5401191A (en) * 1993-04-08 1995-03-28 General Electric Company Base for a three-way lamp
WO1999067810A1 (en) * 1998-06-22 1999-12-29 Koninklijke Philips Electronics N.V. Electric lamp with a comparatively robust lamp cap
FR2799577A1 (fr) * 1999-10-12 2001-04-13 Osram Sylvania Inc Culot de lampe
US7234973B1 (en) 2006-03-23 2007-06-26 Shelly Mark E Lighting system having modified light bulb base and luminare socket for preventing the selection of an over wattage light bulb and method of forming same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5960962A (ja) * 1982-09-30 1984-04-07 株式会社東芝 管球

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732532A (en) * 1956-01-24 Lamp jrase
US2733419A (en) * 1956-01-31 Means for securing a lead wire to an electric lamp ease
US2736874A (en) * 1951-12-26 1956-02-28 Gen Electric Electric lamp
US2896306A (en) * 1953-06-30 1959-07-28 Westinghouse Electric Corp Lamp fabrication
US2738476A (en) * 1954-11-29 1956-03-13 Adolph P Buquor Flashbulb holder and ejector
US2751566A (en) * 1954-11-29 1956-06-19 Adolph P Buquor Safety plug and keeper for magnetic socket
US2913697A (en) * 1956-06-19 1959-11-17 Westinghouse Electric Corp Electric lamp base
US2987696A (en) * 1957-10-24 1961-06-06 Gen Electric Lamp base with collared insulator
US3840954A (en) * 1971-03-22 1974-10-15 Westinghouse Electric Corp Method of manufacturing and assembling an electric lamp base
US4134630A (en) * 1978-05-25 1979-01-16 Bulbex Corporation Process for repairing lead-in wires of electric light bulbs
US4565944A (en) * 1982-12-07 1986-01-21 U.S. Philips Corporation Electric lamp
EP0381269A1 (en) * 1989-01-31 1990-08-08 Koninklijke Philips Electronics N.V. Electric lamp
US5401191A (en) * 1993-04-08 1995-03-28 General Electric Company Base for a three-way lamp
US5306179A (en) * 1993-04-09 1994-04-26 General Electric Company Lamp base and method of forming same
WO1999067810A1 (en) * 1998-06-22 1999-12-29 Koninklijke Philips Electronics N.V. Electric lamp with a comparatively robust lamp cap
FR2799577A1 (fr) * 1999-10-12 2001-04-13 Osram Sylvania Inc Culot de lampe
US6255763B1 (en) * 1999-10-12 2001-07-03 Osram Sylvania Inc. Lamp base with flexible sidewall
US7234973B1 (en) 2006-03-23 2007-06-26 Shelly Mark E Lighting system having modified light bulb base and luminare socket for preventing the selection of an over wattage light bulb and method of forming same

Also Published As

Publication number Publication date
NL65240C (xx)
GB586733A (en) 1947-03-28
BE478104A (xx)

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