US2209005A - Series lamp - Google Patents

Series lamp Download PDF

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Publication number
US2209005A
US2209005A US281494A US28149439A US2209005A US 2209005 A US2209005 A US 2209005A US 281494 A US281494 A US 281494A US 28149439 A US28149439 A US 28149439A US 2209005 A US2209005 A US 2209005A
Authority
US
United States
Prior art keywords
filament
wires
lamp
lamps
leading
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
US281494A
Other languages
English (en)
Inventor
Sittel Alfred
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
Application granted granted Critical
Publication of US2209005A publication Critical patent/US2209005A/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
    • H01K1/40—Leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/62—One or more circuit elements structurally associated with the lamp
    • H01K1/70—One or more circuit elements structurally associated with the lamp with built-in short-circuiting device, e.g. for serially connected lamps

Definitions

  • connection cable by any are which may be formed within the lamp and which may extend further or become unnecessarily long.
  • the melting together of the current supply wires also assures the continued uninterrupted passage of the 5 current through the other lamps of the group so that the latter cannot be extinguished as a re-
  • the other lamps of the group maythereby be At the time during which carbon-rod filaments is placed in operation merely by closing the circuit.
  • cut-outs used for such incandescent lamps occasionally suggested to bring the current'supoperated in a series circuit have been designed ply wires which supported the carbon-rod filain many difierent ways. Generally they consist ments, close together at a point below the filaof oxidized aluminum wires or aluminum strips ment, for series-connection purposes, so that 20 which are placed around the two current supply when the filament burned through, the are that wires of the lamps within the stem tube of the might be formed would melt together the parts lamp.
  • Another object oi my invention is to provide automatic cut-out means for series-operating electric incandescent lamps which will positively 50 operate to short-circuit the lamp filament and interconnect the lamp leading-in wires upon failure of the said filament, regardless of whether such failure occur during lamp operation or otherwise.
  • the lamp there shown consists in the customary manner of a glass bulb I, a stem tube 2 extending inwardly of the bulb, two current supply or leading-in wires 4, hermetically sealed in the stem press 3 of the stem tube, a sealed evacuation tube 6, and a filament 'l which may consist of a single or double coil of tungsten wire and which is welded, or fastened by pinching, to the ends of the two current supply wires 6, 5.
  • One of the said wires i s soldered to the sleeve 8, and the other to the bottom contact 9 of a customary screw base.
  • the outer leads 815' i. e., the parts of the two 7 current supply wires whichextend between the stem press 3 and the lamp base, are bridged by a clamp of oxidized aluminum strip" which constitutes the breakdown fuse or cut-out of the lamp.
  • This cut-out always responds when the filament 1 fails while cold, and under certain circumstances will also respond when the filament fails in the heated condition. The latter response occurs when an arc is not immediately formed upon failure of the filament during operation, so that the lamp is consequently extinguished.
  • the two inner leads 6, 5 of the current supply wires are provided with two acute-angle impressions ll, l2
  • the said inner leads are bridged, in an insulated manner, by means of a spacer member comprising a glass bead l3 which is held by wires I4, l5 welded to the inner current supply wires.
  • the said spacer member maintains the spaced relation of the inner leads d, 5 at all times.
  • the shape of the filament, of the lamp bulb and of the base may be any desired one.
  • cut-out it may also be of any other suitable c onstruction, and can in certain cases, as known, be located within the bulb instead of externally thereof.
  • An electric incandescent lamp comprising a sealed envelope, a filament within said envelope,
  • leading-in wires including inner leads within said envelope having bent portions extending into sufiiciently close proximity to each other so that an arc formed upon failure of said filament and passing along said leads will fuse them together at their said bent portions, and 'a cut-out member bridging said leading-in wires at a point intermediate the base connections and the closely disposed portions of said leading-in wires, said cut-out member being spaced a considerable distance from the said closely disposed portions of said. leading-in wires and being normally non-conductive but becoming automatically conductive upon application of an abnormal voltage to the lamp.
  • An electric incandescent lamp comprising a sealed envelope, a filament within said envelope,
  • leading-in wires connecting said filament to the terminals of said base, said leading-in wires including inner leads within said envelope having bent portions extending into close proximity to each other, and a cut-out member bridging said leading-in wires externally of said envelope.
  • An electric incandescent lamp comprising a sealed envelope, a filament within said envelope, a base secured to said envelope, and a pair of leading-in wires connecting said filament to the a base secured to said envelope, and a pair of terminals of said base, said leading-in wires in-' cluding inner leads within said envelope having bent portions extending into close proximity to each other, a cut-out member bridging said leading-in wires externally ofsaid envelope, and a spacer member bridging said. leading-in wires internally of said envelope and maintaining the said bent'portions of said leading-in wires in definite close proximity to'each other.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)
US281494A 1938-07-04 1939-06-27 Series lamp Expired - Lifetime US2209005A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2209005X 1938-07-04

Publications (1)

Publication Number Publication Date
US2209005A true US2209005A (en) 1940-07-23

Family

ID=7990179

Family Applications (1)

Application Number Title Priority Date Filing Date
US281494A Expired - Lifetime US2209005A (en) 1938-07-04 1939-06-27 Series lamp

Country Status (3)

Country Link
US (1) US2209005A (en))
FR (1) FR856107A (en))
NL (1) NL54682C (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786120A (en) * 1957-03-19 Delayed action voltage controlled
US4415836A (en) * 1981-10-01 1983-11-15 Gte Products Corporation Lamp with improved fuse wire
US20080050519A1 (en) * 2006-08-25 2008-02-28 Eugene Hubbuch Latex composition, latex foam, latex foam products and methods of making same
US20080184642A1 (en) * 2007-02-05 2008-08-07 Laura Sebastian Latex foam insulation and method of making and using same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786120A (en) * 1957-03-19 Delayed action voltage controlled
US4415836A (en) * 1981-10-01 1983-11-15 Gte Products Corporation Lamp with improved fuse wire
US20080050519A1 (en) * 2006-08-25 2008-02-28 Eugene Hubbuch Latex composition, latex foam, latex foam products and methods of making same
US20080184642A1 (en) * 2007-02-05 2008-08-07 Laura Sebastian Latex foam insulation and method of making and using same

Also Published As

Publication number Publication date
NL54682C (en))
FR856107A (fr) 1940-05-30

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