US1769840A - Method of making electric lamps - Google Patents

Method of making electric lamps Download PDF

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Publication number
US1769840A
US1769840A US302096A US30209628A US1769840A US 1769840 A US1769840 A US 1769840A US 302096 A US302096 A US 302096A US 30209628 A US30209628 A US 30209628A US 1769840 A US1769840 A US 1769840A
Authority
US
United States
Prior art keywords
base
bulb
lamp
filament
reflector
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
US302096A
Other languages
English (en)
Inventor
Wilber M Johnson
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 BE363255D priority Critical patent/BE363255A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US302096A priority patent/US1769840A/en
Priority to FR680316D priority patent/FR680316A/fr
Priority to GB25716/29A priority patent/GB317859A/en
Application granted granted Critical
Publication of US1769840A publication Critical patent/US1769840A/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
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/16—Joining of caps to vessel

Definitions

  • My invention relates to electric lamps comprising a filament or other light source enclosed in a bulb and connected to a base which is united to said bulb, and more particularly to methods for manufacturing such devices so that the light source will have a definite relationto the said base.
  • Myinvention is of particular advantage in the manufacture of lamps for projection purposes. Such lamps are ordinarily used with a reflector such as the well-known paraboloid reflector of the automobile headlamp. It is highly desirable that such lamps be accurately made so that when inserted in the headlamp, for instance, the filament will have a definite relation with the reflector.
  • My invention provides a method of manufacture whereby the filament ispositioned definitely with respect to a part or parts of the lamp base such as the pins which are later used to locate the lamp with reference to the reflector.
  • FIG. 1 is a fragmentary elevation partially in section of a gauging die for accuratelypositioning the base pins on an electric incandescent lamp base
  • Fig. 2 is a fragmentary elevation of a portion of a sealing-in machine
  • Fig. 3' is a fragmentary elevation of a portion of an incandescent lamp basing apparatus
  • Fig. 4 is a plan view of one form of electric incandescent lamp base having three pins.
  • Fig. 5 is a frag mentary elevation of an electric incandescent lamp, its socket and associated reflector
  • Fig. 6 is a fragmentary sectional side elevation of a modification
  • Fig. 7 is a fragmentary front elevation thereof.
  • an electric incandescent .lamp base 10 of the bayonet type is placed 111 a gauging die 11 so that its open end rests upon the upper flat surface of the plate 12 thereof.
  • the base pins 13 are next united to the base by the usual pin inserting operation and positioned so that they rest upon the top 1 10f the gauge which is a predetermined distance from the upper flat surface of the plate 12.
  • a lamp mount comprising the stem 15 and filament 16 is placed on a mount pin 16 forming partof a sealing-in headv (not shown).
  • This may form part of a machine such as disclosed in U.'S. Patent 'No. 1,475,192 issued to Marshall.
  • a bulb 17 is then placed over the mount.
  • the diameter of the aperture 19 is the same as the diameter of the open end of tfhe'base 10.
  • the axial alignment of the filament is insured by the centering of the amount through its exhaust. tube and flange and the focal length is fixed by the disposition of the filament a fixed distance from the plate 18, since the base will later contact with that portion of the bulb which is of the same diameter and which is engaged by the said plate during the sealingin operation.
  • a basing apparatus comprising a base holding gauge 20 and a spring tensioned bulb holder 21 carried on the end of a spindle 22.
  • a basing apparatus comprising a base holding gauge 20 and a spring tensioned bulb holder 21 carried on the end of a spindle 22.
  • a lamp base 10 lined with cement 's placed in the gauge 20 so that the base pin 13 rest upon the top face of the said gauge.
  • the accurately sealed unbased lamp base until the edge of the base engages the bulb.
  • An adjustable stop 24 whlch bears against the top of the base 10 tends to hold it in position during the basing operation.
  • a base having three pins of unequal spacing as shown in Fig. 4 insures that the lamp is inserted in the proper osition. This is desirable especially for. mu tiple filament incandescent lamps.
  • Such a lamp having three filaments is shown in Fig. 5 and has a.filament 25 at the focus of the reflector 26, a filament 27 above the said focus, and a filament 28 also above the focus and behind the filament 27.
  • a.filament 25 at the focus of the reflector 26 a filament 27 above the said focus
  • a filament 28 also above the focus and behind the filament 27.
  • socket 29 is carried by the reflector 26 and has slots definitely located with reference to the focus of the reflector to receive the pins 13.
  • the method of making a precision electric lamp which consists in positioning a base having a plastic lining by means of a plane surface engaging at least three pins laterally projecting from said base and all located at the same fixed distance from the open end thereof, inserting into said open end the neck of a bulb having sealed therein a light source located in the axis of said bulb and a fixed distance from a circle on said bulb surface normalto said axis and of the same diameter asthe end 0 nin of said base with the bulb axis norma to t e said plane surface and then heating sald base to harden said lining.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
US302096A 1928-08-25 1928-08-25 Method of making electric lamps Expired - Lifetime US1769840A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE363255D BE363255A (enrdf_load_stackoverflow) 1928-08-25
US302096A US1769840A (en) 1928-08-25 1928-08-25 Method of making electric lamps
FR680316D FR680316A (fr) 1928-08-25 1929-08-14 Perfectionnements aux procédés de fabrication des lampes électriques
GB25716/29A GB317859A (en) 1928-08-25 1929-08-23 Improvements in and relating to methods of making electric lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US302096A US1769840A (en) 1928-08-25 1928-08-25 Method of making electric lamps

Publications (1)

Publication Number Publication Date
US1769840A true US1769840A (en) 1930-07-01

Family

ID=23166238

Family Applications (1)

Application Number Title Priority Date Filing Date
US302096A Expired - Lifetime US1769840A (en) 1928-08-25 1928-08-25 Method of making electric lamps

Country Status (4)

Country Link
US (1) US1769840A (enrdf_load_stackoverflow)
BE (1) BE363255A (enrdf_load_stackoverflow)
FR (1) FR680316A (enrdf_load_stackoverflow)
GB (1) GB317859A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095521A (en) * 1958-12-17 1963-06-25 Philips Corp Travelling wave tubes
CN103972043A (zh) * 2014-05-30 2014-08-06 德清县升星照明电器有限公司 一种灯泡卡座机构
CN103985626A (zh) * 2014-05-30 2014-08-13 德清县升星照明电器有限公司 一种旋转式流水线的灯泡支架

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095521A (en) * 1958-12-17 1963-06-25 Philips Corp Travelling wave tubes
CN103972043A (zh) * 2014-05-30 2014-08-06 德清县升星照明电器有限公司 一种灯泡卡座机构
CN103985626A (zh) * 2014-05-30 2014-08-13 德清县升星照明电器有限公司 一种旋转式流水线的灯泡支架

Also Published As

Publication number Publication date
GB317859A (en) 1930-04-17
FR680316A (fr) 1930-04-28
BE363255A (enrdf_load_stackoverflow)

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