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US3233955A - Apparatus for evacuating an electric filament lamp or discharge tube through a protruding exhaust tube and for sealing off the said exhaust tube - Google Patents

Apparatus for evacuating an electric filament lamp or discharge tube through a protruding exhaust tube and for sealing off the said exhaust tube Download PDF

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Publication number
US3233955A
US3233955A US214232A US21423262A US3233955A US 3233955 A US3233955 A US 3233955A US 214232 A US214232 A US 214232A US 21423262 A US21423262 A US 21423262A US 3233955 A US3233955 A US 3233955A
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US
United States
Prior art keywords
exhaust tube
leads
tube
sealing
lamp
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
US214232A
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English (en)
Inventor
Bastiaanse Ernst
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.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3233955A publication Critical patent/US3233955A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/385—Exhausting vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/40—Closing vessels

Definitions

  • the invention relates to an apparatus for evacuating an electric filament lamp or discharge tube through a protrudingexhaust tube and'for. sealing off the said exhaust tube, which is provided with at least one holder for the lamp or tube to be treated, with an orifice of a pipe of a pumpsystem into which this exhaust tube may be inserted, andwith a burner for sealing off the said exhaust tube, which is arranged between the holder and the orifice.
  • the apparatus in accordance with the invention is characterized in that, viewed in the direction of insertion of, the exhaust tube into the orifice of the evacuation pipe, 21 diverging guide is provided for the current supply leads projecting from the lamp or tube alongside the exhaust tube, the leads on'insertion of the exhaust tube being resiliently bent away from the longitudinal axis of the exhaust tube in the said guide.
  • the provision of a guide diverging from the direction of insertion of the exhaust tube enables the current supply leads to be protected during the sealing off of the exhaust tube against the fiame from the burner.
  • the leads need only be bent slightly with respect to the exhaust tube so that a bending movement within the resilient range of the material of the leads is sufficient.
  • the fact that the leads are only bent resiliently enables them to relax and to return substantially to their initial aligned position when the lamp or tube is removed from the orifice of the evacuation pipe. Separate aligning of the leads subsequent to the sealing off process is no longer required.
  • the guide comprises two guiding surfaces situated one on each side of the longitudinal axis of the orifice of the evacuation pipe. This embodiment is particularly suitable for lamps and tubes in which the current supply leads protrude one on each side of the exhaust tube.
  • each guiding surface forms a part of a channel provided on a common support.
  • pliers or grippers for centering the exhaust tube may be used which, when closed, embrace the exhaust tube during 3,233,955 Patented Feb. 8, 1966 part of the insertion movement and slidably support it in a centered position.
  • the plier jaws have a bevelled outer profile which, in the closed position of the pliers, form extensions of the guiding surfaces for the current supply leads, which surfaces diverge from the direction of insertion of the exhaust tube.
  • FIG. 1 shows a filament lamp to be evacuated in which the current supply leads protruding from the lamp are bent in a known manner during the process of sealing off the exhaust tube;
  • FIGS. 2 and3 are side elevations of the apparatus in accordance with the invention showing the principal structural components, FIG. 2 being an elevation along the line II.II of FIG. 3 while FIG. 3 is an elevation along the line III-e111 of FIG. 2;
  • FIG. 4 is a sectional view taken on the line IV-IV of FIG. 2;
  • FIGS. 5 to 9 are diagrammatic views serving to illustrate the operation ofthe apparatus shown in FIGS. 2 and 3 by showing a number of positions of the lamp during the insertion of the exhaust tube into the orifice of the evacuation pipe.
  • leads 4 and 5 of the lamp are bent back with respect to the exhaust tube 2 into a position shown by broken lines in FIG. 1. In this position the leads 4 and 5 are not adversely affected by a flame from a sealing otf burner directed onto the exhaust tube 2 at right angles thereto. After the exhaust tube has been sealed off, the leads are bent back to their initial position and aligned in order to enable a lamp cap to he slipped onto them.
  • FIGS. 2 and 3 For the process of evacuating the lamp 1 and sealing 011 the exhaust tube 2 anapparatus as shown in FIGS. 2 and 3 may be used.
  • This apparatus includes a standard 7 secured to a table 6 and supporting an annular lampholder 8. A stationary orifice 17 of an evacuation pipe 16 is located below the lampholder 8.
  • the evacuation pipe 16 contains a resilient member 18 which is enclosed between the pipe 16 and a nut 27 in the manner shown.
  • the nut is readily rotatable with respect to the evacuation pipe 16 in known manner. By screwing down the nut 27 the internal cross-sectional area of the resilient member 18 is reduced.
  • This resilient member forms a packing for the exhaust tube 2 of the lamp 1 to be passed through.
  • the table further carries a support 15 for a sealing burner 13 from which a flame 14 may emerge.
  • the lamp 1 When the lamp 1 is to be evacuated and the exhaust tube 2 is to be sealed off, the lamp is lowered, with the exhaust tube 2 pointing downwards and with the leads 4 and 5 bent back, into the holder 8 and the exhaust tube 2 is inserted into resilient member 18. The nut 27 is then screwed down. Subsequently the lamp 1 supported by the holder 8 is evacuated through the exhaust tube 2 and this tube is sealed oti with the aid of the flame 14.
  • Said construction comprises a plate 10 which is secured to the standard 7 and contains two inclined or divergent sheath-like guide members 11 and 12 for the leads of the lamp.
  • the plate 10 are further provided an aperture 39 through which the exhaust tube may be passed "b el) and two apertures 31 and 32 through which the leads may be passed when the exhaust tube 2 is inserted into the' orifice 17.
  • the sheath-like guide members 11 and 12 each comprise a guide surface 19 and 20 respectively diverging from the direction of insertion;
  • the apparatus operates as follows (FIGS.,5 to 9): with the aid of a holder 35 in the form of a suction cup,;the lamp to be treated is moved to a position :above the holder and 23 embrace the end of the exhaust tube 2. In *the closed position of thev pliers the exhaust tube is then centered (FIG. 6). Adjustment is such that the exhaust tube is slidably embraced and centered by: the closed pliersr Theholder 35 is now lowered furtherand the centered exhaust tube 2 'is passedfthrough theycloselyv encircling aperture 30 .of the plate 10.: In this movement the leads 4 and 5 engage the bevelled surfaces of the jaws 22, and- 23 was to be spread apart.
  • aholder for the lamp to be treated, an evacuating system having apipe; said exhaust-"tube being adapted to "be inserted ;in thexorificeof said pipe 3. burner arranged between said holder, and said orifice andhavinga-flame for sealing ofi' said exhaust tube, the
  • guide members being divergent as viewed in the direction of the insertion of said exhaust tube in the orifice of said pipe, saiddivergent guide members being directed downwardly andtbeing spaced tsufii cientlyl to permitthe projecting ejxhaust'tube to be' in-- serted therebetween, and eachijof ls aid'diver'gelnt guidet vmembers forming an enclosure for said leads that prevents, direct contact? ofthe flame of said burner-with said leads,v the angular, :position of said guide. membersirelative to thelongitudinal axis of. said exhau'st tubebeing suchas r to resiliently bendithe leads?
  • An apparatusflfor evacuating ,an;,electric, filament lamp as claimed in claim lf'further comprising grippers. for said exhaust tube ua stationary guide .member; said grippers being adapted to slid'e' in: said stationary gnide member toward and away'from anrarea-above said 'divergent guidefmembers!

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US214232A 1961-08-28 1962-08-02 Apparatus for evacuating an electric filament lamp or discharge tube through a protruding exhaust tube and for sealing off the said exhaust tube Expired - Lifetime US3233955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL268695 1961-08-28

Publications (1)

Publication Number Publication Date
US3233955A true US3233955A (en) 1966-02-08

Family

ID=19753254

Family Applications (1)

Application Number Title Priority Date Filing Date
US214232A Expired - Lifetime US3233955A (en) 1961-08-28 1962-08-02 Apparatus for evacuating an electric filament lamp or discharge tube through a protruding exhaust tube and for sealing off the said exhaust tube

Country Status (9)

Country Link
US (1) US3233955A (de)
BE (1) BE621791A (de)
CH (1) CH398787A (de)
DE (1) DE1230128B (de)
DK (1) DK103951C (de)
ES (1) ES280287A1 (de)
GB (1) GB943732A (de)
NL (2) NL268695A (de)
OA (1) OA00726A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103700558A (zh) * 2013-12-31 2014-04-02 詹云翔 一种灯泡封口机器
CN103700559A (zh) * 2013-12-31 2014-04-02 詹云翔 一种灯泡封口机的封口夹具装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1626679A (en) * 1927-05-03 Lamp-making machine
US2006771A (en) * 1931-07-13 1935-07-02 Sparks Withington Co Electric tube evaporating apparatus
US2215100A (en) * 1937-05-22 1940-09-17 Westinghouse Electric & Mfg Co Method and machine for sealing vitreous vessels

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2132538A (en) * 1935-08-21 1938-10-11 Westinghouse Electric & Mfg Co Machine for sealing evacuated vessels
US2554013A (en) * 1945-02-26 1951-05-22 Westinghouse Electric Corp Lead wire positioner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1626679A (en) * 1927-05-03 Lamp-making machine
US2006771A (en) * 1931-07-13 1935-07-02 Sparks Withington Co Electric tube evaporating apparatus
US2215100A (en) * 1937-05-22 1940-09-17 Westinghouse Electric & Mfg Co Method and machine for sealing vitreous vessels

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103700558A (zh) * 2013-12-31 2014-04-02 詹云翔 一种灯泡封口机器
CN103700559A (zh) * 2013-12-31 2014-04-02 詹云翔 一种灯泡封口机的封口夹具装置
CN103700558B (zh) * 2013-12-31 2016-04-06 詹云翔 一种灯泡封口机器
CN103700559B (zh) * 2013-12-31 2016-05-11 詹云翔 一种灯泡封口机的封口夹具装置

Also Published As

Publication number Publication date
BE621791A (de)
NL110756C (de)
OA00726A (fr) 1967-07-15
DE1230128B (de) 1966-12-08
GB943732A (en) 1963-12-04
DK103951C (da) 1966-03-14
CH398787A (de) 1966-03-15
ES280287A1 (es) 1962-12-01
NL268695A (de)

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