US1529323A - Closed arc lamp - Google Patents

Closed arc lamp Download PDF

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Publication number
US1529323A
US1529323A US707722A US70772224A US1529323A US 1529323 A US1529323 A US 1529323A US 707722 A US707722 A US 707722A US 70772224 A US70772224 A US 70772224A US 1529323 A US1529323 A US 1529323A
Authority
US
United States
Prior art keywords
electrode
electrodes
arc
lamp
interposed
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
US707722A
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English (en)
Inventor
Skaupy Franz
Zebrowski Willy
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 DEP46431D priority Critical patent/DE399308C/de
Priority to GB25677/23A priority patent/GB216772A/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to US707722A priority patent/US1529323A/en
Application granted granted Critical
Publication of US1529323A publication Critical patent/US1529323A/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
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/98—Lamps with closely spaced electrodes heated to incandescence by light-emitting discharge, e.g. tungsten arc lamp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D7/00—Picks

Definitions

  • Our invention relates to closed arc lamps. More in particular, the invention relates to arcs of the tungsten type having provision for more than one are.
  • tungsten arc lamp forming the subject matter of the present invention, means are provided such that two arcs are produced in succession although only two current supply lines are used.
  • the lamp is provided with three electrodes. Two of these electrodes are comparatively small in size and between them there is located a third electrode of larger diameter.
  • the two outer electrodes are rovided with suitable terminals outside 0 the lamp to which a single current supply line is connected.
  • the lamp is preferably filled with one of the rare gases.
  • the central electrode forms a point from which two arcs may be developed;
  • the central electrode in one respect acts as an anode and in another respect acts as a cathode.
  • the central electrode is uniformly heated. Therefore it is possible with a smaller current to cause the central electrode, having a considerably larger diameter than the external electrodes, to be brought to a point of bright light radiation.
  • the lamp shown comprises a bulb b similar to that used for an incandescent lamp.
  • the lamp is also provided with a base a and with a stem 0 in the'interior through which the leading-in wires 01 and d pass.
  • the supporting stems e and e of the two outer electrodes 7 and f are connected to the terminals in the base a.
  • a balllike central electrode 9 having a diameter substantially larger than that of the outer electrode.
  • This ball is supported by a stem h which is anchored in the foot 0 as shown.
  • This stem- 71- is not connected to any current line.
  • In the supporting stem of the electrode f which latter is adapted to rest against the central electrode a.
  • a bimetallic strip 2' When the current is turned on there is first established an arc between the electrodes 7 and g and as a result of the heat action of the current, the bimetallic strip then bends over and draws the third electrode f away from the central electrode '9 thereby forming a second arc.
  • the central electrode therefore, when the lamp is burning, liesbetween two directly connected arcs.
  • the central electrode thus operating both as an anode and as a cathode, and although not connected to any current supply line, is strongly heated by the action of the two arcs.
  • the drop in voltage therefore is double that which usually takes place in lamps in which a single arc is maintained between two electrodes.
  • a first electrode and a second electrode In a sealed envelope, a first electrode and a second electrode, a pair of terminals outside of the envelope one of which is electrically connected with the first and the other;
  • a first electrode and a second electrode In a sealed envelope, a first electrode and a second electrode, a pair of terminals outside of the envelope, one of which is electrically connected with the first and the other with the second of the said electrodes through a medium of a pair of stems, one stem supporting the first and the other stem supporting the second of said electrodes, a third electrode interposed between the first two electrodes, said second electrode being adapted to rest in contact with .the interposed electrode whereby an arc may be formed between the central electrode and the firstelectrode, and means for separating the second and third electrodes after the first arc is vformed whereby a second arc may be established between the second and third electrodes, said means responsive to the current of the first are.
  • third electrode interposed between the first two electrodes, said second electrode being adapted to rest in contact with the interposed electrode whereby an arc may be formed between the central electrode and the first electrode, and means for separating the second and third electrodes, and a bimetallic element in the stem of the second electrode for separating the second and third electrodes after the first arc is formed whereby a second arc may be established between the second and third electrodes.
  • a first electrode and a second electrode a pair of terminals outside of the envelope, one of which is electrically connected with the first and the other with the second of' the said electrodes through a medium of a pair of stems, one stem supporting the first and the other stem supporting'the second of said electrodes, 9. third electrode interposed between the first two electrodes, said seco'nd'electrode being adapted to rest incontact with the interposed electrode whereby an arc may be formed between the central electrode and the first electrode, and means for separatingthe second and third electrodes after the first are is formed whereby a second arc ma be established between-the second 7 and t ird,
  • a first electrode, a second electrode and a third electrode interposed between the first two said second electrode being adapted to; rest in contact with the interposed electrode whereby an arc the interposed electrode whereby an arc may be formed between the third and first electrodes, and means for separating the second and third electrodes after the first arc is established whereby a second arc may be formed between the second and third electrodes in series with the first arc, said means comprising a thermally operated element
  • said element being responsive to the current of the first are for drawing the second arc.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
US707722A 1924-04-19 1924-04-19 Closed arc lamp Expired - Lifetime US1529323A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEP46431D DE399308C (de) 1924-04-19 1923-06-24 Geschlossene Bogenlampe
GB25677/23A GB216772A (enrdf_load_stackoverflow) 1924-04-19 1923-10-15
US707722A US1529323A (en) 1924-04-19 1924-04-19 Closed arc lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US707722A US1529323A (en) 1924-04-19 1924-04-19 Closed arc lamp

Publications (1)

Publication Number Publication Date
US1529323A true US1529323A (en) 1925-03-10

Family

ID=24842891

Family Applications (1)

Application Number Title Priority Date Filing Date
US707722A Expired - Lifetime US1529323A (en) 1924-04-19 1924-04-19 Closed arc lamp

Country Status (3)

Country Link
US (1) US1529323A (enrdf_load_stackoverflow)
DE (1) DE399308C (enrdf_load_stackoverflow)
GB (1) GB216772A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
GB216772A (enrdf_load_stackoverflow) 1924-06-05
DE399308C (de) 1924-08-01

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