US1995148A - Precision electric lamp and method of manufacturing thereof - Google Patents

Precision electric lamp and method of manufacturing thereof Download PDF

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Publication number
US1995148A
US1995148A US308725A US30872528A US1995148A US 1995148 A US1995148 A US 1995148A US 308725 A US308725 A US 308725A US 30872528 A US30872528 A US 30872528A US 1995148 A US1995148 A US 1995148A
Authority
US
United States
Prior art keywords
lamp
bulb
base
united
cap
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
US308725A
Other languages
English (en)
Inventor
Illingworth George
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
Application filed by General Electric Co filed Critical General Electric Co
Priority to US308725A priority Critical patent/US1995148A/en
Priority to DEP59587D priority patent/DE495654C/de
Priority to FR682010D priority patent/FR682010A/fr
Priority to GB29338/29A priority patent/GB319748A/en
Application granted granted Critical
Publication of US1995148A publication Critical patent/US1995148A/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

Definitions

  • My invention relates to electric lamps and more specifically to such lamps in which the light source is definitely located with reference to the base or other portion of the lamp which serves to locate the lamp in a projection device.
  • My invention also comprises a method ofl manufacture of such lamps.
  • a salient feature of my invention is the provision of a cap located at the tip end of the lamp which serves to more denitely locate the lamp in the projection device. method of simultaneously locating the light source with reference to the base and cap is also a feature of my invention.
  • FIG. 1 is a side elevation of an apparatus for adjusting a lamp so that its filament bears a deiinite relation with respect to end members later united to the said lamp;
  • Fig. 2 is a top plan view thereof;
  • Fig. 3 is a horizontal section along the line 3-3 of Fig. 1;
  • Fig. 4 is an elevation partially in section of a gauging cup;
  • Fig. 5 is a perspective of the lamp and parts to be assembled thereon;
  • Fig. 6 is an elevation partially in section of the assembled lamp; and
  • Fig. 7 shows the lamp and associated sockets ready for use.
  • the lamp shown comprises a tubular bulb 10, a plain cylindrical base l1 without the usual threads or pins, and a concentrated lament 12 preferably of closely coiled tungsten wire, electrically connected to the said base through the customary lead and support wires 13 and 14 respectively.
  • a pair of supplemental bases 15 and 16 The base 15 is in the form of a ring and is placed over the regular base 11.
  • the base 16 is in the form of a cap and is placed over the opposite end of the lamp bulb.
  • the horizontal arm 18 having an aperture 19 formed therein for receiving the base or ring 15.
  • the ring l5 is definitely positioned in the aperture 19 through its projecting pins 20 which ride inthe slots 21 and is held by the thumb screw 22.
  • Theincandescent lamp is next placed in the apparatus so that its base 11 extends through the ring 15..
  • the plates are The adjustably mounted on the intermediate projections 29 and 30 forming part of the standard 17 and held in the desired position through the clamp 31 which is threaded on the end of the pin 32 carried by the said plates.
  • the supplemental base or cap 16 is next placed in a gauge 33 having an opening 34 to receive the projecting pin 35 carried by the said cap after which the gauge is screwed or otherwise placed in the base 36 of the standard 17.
  • the apparatus is designed so that the ring 15, and cap 16 when assembled as shown in Fig. 1 are in accurate axial alignment with each other.
  • the lamp bulb may be moved in a vertical or a. horizontal plane so as to denitely locate the lilament 12 with respect to the said bases simultaneously. 'By loosening the clamp 31 the plates 25 and 26 which form a carriage for the lamp may be moved in a horizontal plane being accurately guided in their travel by the fixed pin 37 which extends through the slots 38 formed in the said plates., The clamp 31 is then tightened so as to hold the plates in the adjusted position.
  • the lamp bulb may be moved in a vertical plane by simply raising it up or down through the jaws 23 and 24 which frictionally hold in any placed position through the springs 39 and 40 attached to the said jaws andthe plates 25 and 26 respectively.
  • suitable optical means comprising in combination a lens and a ground glass screen mounted in nders 41 supported by brackets 42 carried by the base 36 of the apparatus.
  • the ground glass screens 43 are provided with cross hairs 44.
  • the finders 41 are so located and adjusted that when the lament 12 is in the proper position with relation to the supplemental bases 15 and 16,-its image on each screen will lie at the intersection of the cross hairs.
  • the finders 41 are preferably disposed 90 apart.
  • Fig. 7 the completed lamp is shown mounted in a projection apparatus comprising a lower socket 45 having oppositely disposed slots 46 for the reception of the supplemental base pins 20.
  • An upper socket 47 definitely locat'ed with respect to the lower socket is provided for receiving the projecting pin 35 of the cap 16, the lamp being 55 securely held in position by means of a spring 48 housed in the lower socketl 45.
  • An electric lamp for light projection comprising a bulb, a concentrated light source mounted ⁇ therein, leading-in conductors for said light source sealed in one end only of the said bulb, a base united to said end of the bulb and having lateral projections located a fixed predetermined distance from said light source, and a cap united to the opposite end of said bulb and comprising a longitudinally extending projection. from said lamp deiinitely and accurately disposed withrespect to the axis of the said bulb andlight source.
  • An electric lamp for light projection comprising a bulb, a. filament mounted therein, leading-in conductors for said filament sealed in one end only of the said bulb, a base united to said end of the bulb and having lateral projectionQlocateda fixedpredetermined distance from Jsaid n filament, and a cap united to the opposite end of said bulb and comprising a longitudinally extending projection from said lamp denitely and accurately dispsed withrespect to the axis of the said bulb and filament.
  • leading-in conductors sealedinto one end only of said bulb a base united to said end and having lateral projections therefrom located a fixed predetermined distance from said light source and engaging slots in one of said sockets, and a cap united to the opposite end of said bulb and comprising a projection definitely and accurately disposed with respect to the axis of said bulb and light source and engaging a. depression in the other of said sockets.
  • An electric lamp for light projection comprising a bulb, a concentrated light source mounted therein, leading-in conductors sealed into one end of said bulb, the opposite end of said bulb being free from leading-in conductors, a base united to the first-mentioned end of said bulb and connected to the said leading-in conductorsand a cap united to the opposite end of (said bulb and comprising an aligning member having a deiinite relation to the longitudinal axis of said light source, said base being provided with locating members positioned a xed predetermined distance from said light source.
  • An electric lamp comprisingxa bulb, a concentrated light source mounted therein, leadingin conductors for said light source sealed in the said bu1b, a cylindrical base united to one end Cof said bulb, a supplemetalbase comprising a ring surrounding said cylindrical base and having a pair of laterally extending pins mounted thereron, saidv ring being mounted on said cylindrical base so that said pins area denite predetermined distance from said lightsource, and a cap united to the opposite end of saidv bulb and comprising a. longitudinally extendingll projection from said lamp definitely and accurately disposed with re- I spect to the axis of said bulb and light sourc.

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
US308725A 1928-09-27 1928-09-27 Precision electric lamp and method of manufacturing thereof Expired - Lifetime US1995148A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US308725A US1995148A (en) 1928-09-27 1928-09-27 Precision electric lamp and method of manufacturing thereof
DEP59587D DE495654C (de) 1928-09-27 1929-01-31 Elektrische Projektionsgluehlampe und Einrichtung zu ihrer Herstellung
FR682010D FR682010A (fr) 1928-09-27 1929-09-19 Perfectionnements aux lampes électriques de précision et à leurs procédés de fabrication
GB29338/29A GB319748A (en, 2012) 1928-09-27 1929-09-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US308725A US1995148A (en) 1928-09-27 1928-09-27 Precision electric lamp and method of manufacturing thereof

Publications (1)

Publication Number Publication Date
US1995148A true US1995148A (en) 1935-03-19

Family

ID=23195139

Family Applications (1)

Application Number Title Priority Date Filing Date
US308725A Expired - Lifetime US1995148A (en) 1928-09-27 1928-09-27 Precision electric lamp and method of manufacturing thereof

Country Status (4)

Country Link
US (1) US1995148A (en, 2012)
DE (1) DE495654C (en, 2012)
FR (1) FR682010A (en, 2012)
GB (1) GB319748A (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349233A (en) * 1966-01-31 1967-10-24 Structural Electric Products C Inset paving light
US4687453A (en) * 1985-12-19 1987-08-18 Gte Products Corporation Method and apparatus for position orientation of a metal halide lamp base assembly
US4722711A (en) * 1985-12-19 1988-02-02 Gte Products Corporation Method and apparatus for position orientation of a metal halide lamp base assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349233A (en) * 1966-01-31 1967-10-24 Structural Electric Products C Inset paving light
US4687453A (en) * 1985-12-19 1987-08-18 Gte Products Corporation Method and apparatus for position orientation of a metal halide lamp base assembly
US4722711A (en) * 1985-12-19 1988-02-02 Gte Products Corporation Method and apparatus for position orientation of a metal halide lamp base assembly

Also Published As

Publication number Publication date
FR682010A (fr) 1930-05-22
DE495654C (de) 1930-04-09
GB319748A (en, 2012) 1930-12-29

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