US2592823A - Electric incandescent lamp - Google Patents

Electric incandescent lamp Download PDF

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Publication number
US2592823A
US2592823A US101724A US10172449A US2592823A US 2592823 A US2592823 A US 2592823A US 101724 A US101724 A US 101724A US 10172449 A US10172449 A US 10172449A US 2592823 A US2592823 A US 2592823A
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US
United States
Prior art keywords
lamp
filament
incandescent lamp
incandescent
electric incandescent
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
US101724A
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English (en)
Inventor
Riccomagno Guglielmo
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Individual
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Individual
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Filing date
Publication date
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Publication of US2592823A publication Critical patent/US2592823A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body

Definitions

  • Said lamp is characterised therein that the conventional incandescent filament is stretched on and anchored to additional fxed supporting points, provided atboth sides .aswell -as at the ends of said filament.
  • Fig. l shows a longitudinal section through the lamp bulb according to a rst embodiment.
  • Fig. 2 is a cross section of same taken on line II-II of Fig. 1.
  • Fig. 3 is a fragmentary sectional view illustrating the. attachment end of the lamp bulb according to another embodiment.
  • Fig. 4 is a longitudinal sectional View of a modication showing a lamp with the incandescent filament stretched over flat frame elements.
  • Fig. 5 is a sectional View of the embodiment shown in Fig. 4taken on line V--V thereof.
  • Fig. 6 is a sectional view, similar to Fig. 4, but
  • Fig. 7 is asectional view ofthe modification shownin Fig. 6 taken on line VII-VII thereof.
  • Fig; 8 is a longitudinal sectional view, similar to Fig. 6, with the position of the screen modified;
  • Fig; 9 is a longitudinal sectional view, similar to Fig. 4, with the position of the screen altered;
  • Fig. 10 is a sectional view taken on line X-X; of
  • Fig. 11 is a sectional View taken on line XI- XI of Fig. 9;
  • Fig. 12- is a sectional 'View XII of Fig. 9.
  • the glass bulb is indicatedwith I, and inside of same there is provided a helically wound filament 2 that is made incandescent to'provide the illumination.
  • Said ⁇ coiled filament is mounted in the conventional way on the central supporting stem V3 and, according yto the present 'invention-,is further kept in place by way of small pullf-wiresd.
  • pull-wires 4 are stretched radially between central stem 3 and bulb l, and their end ⁇ is anchored in 5 in the very glass of the bulb, which in correspondence therewith, is There are also provided some supporting diaphragms -1 that surround the incandescent filament 2 and stem 3 so as to effec-,- tively brace said stem.
  • the bulb neck is threaded, as shown in 8, and fits screw-wise on metallic cap 9, there being provided as a safety measure, between the two screw-threaded surfaces, a cement so that the glass bulb cannot get loose.
  • Fig. 3 there is represented a different connection system.
  • the bulb neck is not threaded, but presents an indented portion lll in which engages an extension Il of the metallic screw-threaded cap, so as to constitute a clamping shoulder, here too the connection being effectively insured by a cement cast between bulb and cap.
  • This modified cap is also shown in Fig. 8.
  • a lamp made according to the above description may be subjected to any rotational speed, until the maximum use is made of the persistency of the image on the eye retina, what is obtained when the revolutions per second are synchronized with the maximum inertia value of the eye.
  • Fig. 4 is shown the foot I2 made of' insulating material on which is assembled thef-rame'contaken ori une X11- stituted by the electrodes I3 on which are secured the braces or insulating elements or lament carriers I4 provided with hooks or supporting attachments I5 apt to keep stretched the incandescent lament I8, whose ends are welded to the face electrodes I3.
  • an insulating screen I'I which in the example of Fig. 4, is mounted adjacent to the ilament, while in Fig. 6 it is assembled at a lower height between foot I2 and frame I3.
  • This screen I'I which for instance is made of mica or other equivalent material, serves to prevent an excessive heating of the lamp socket.
  • the foot I2 of insulating material, on which is mounted the frame constituted by electrodes I3 and on which are secured the braces or insulating elements I4' provided with filament I6, welded to electrodes I3.
  • annular insulating elements I4 are used, similar to .those of Figs. 6 and 7, but the circular screen Il' is mounted between the elements I4 below the iilament I6, as previously shown in Fig. 4.
  • the insulating elements I4 are straight cross bars, similar to those of Fig. 4, but the screen II is mounted between the foot I2 and the first cross bar I4, as previously shown in Fig. 6.
  • the lamp and the incandescent lilament may possess forms and arrangements different than those shown, and consequently also the form and arrangement of the filament and of the supporting diaphragms thereof may vary.
  • the lamps may have Edison type sockets or bayonet caps, to which too it is possible to apply the system described above without departing from the scope of the present invention, save as limited in the appended claims.
  • an electric incandescent lamp for high speed rotation including a base, an envelope, and two electric terminals near said base, in combination'with, two longitudinal electrodes mounted to said base and extending in the interior of said envelope and being electrically interconnected to said terminals, two oppositely disposed insulators forming lament carriers supported by said electrodes in said envelope, a plurality of hooks secured to each carrier, a saw-tooth filament suspended on said hooks between said carriers and being electrically interconnected to 'said eletrodes, and an insulating screen mounted on said electrodes and extending transversely between said filament and said base to shield the latter from heat rays emanating from the former.

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Tents Or Canopies (AREA)
US101724A 1948-07-06 1949-06-28 Electric incandescent lamp Expired - Lifetime US2592823A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT277140X 1948-07-06
IT40249X 1949-02-04

Publications (1)

Publication Number Publication Date
US2592823A true US2592823A (en) 1952-04-15

Family

ID=26325507

Family Applications (1)

Application Number Title Priority Date Filing Date
US101724A Expired - Lifetime US2592823A (en) 1948-07-06 1949-06-28 Electric incandescent lamp

Country Status (6)

Country Link
US (1) US2592823A (enrdf_load_stackoverflow)
BE (1) BE490002A (enrdf_load_stackoverflow)
CH (1) CH277140A (enrdf_load_stackoverflow)
DE (1) DE817180C (enrdf_load_stackoverflow)
FR (1) FR990100A (enrdf_load_stackoverflow)
GB (1) GB674970A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519865A (en) * 1967-09-19 1970-07-07 British Lighting Ind Ltd Low pressure alkali metal discharge lamps with protected lead wires

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US773805A (en) * 1902-09-29 1904-11-01 Albert W W Miller Incandescent electric lamp.
US797593A (en) * 1903-09-03 1905-08-22 Albert W W Miller Incandescent electric lamp.
US1022543A (en) * 1907-03-13 1912-04-09 Gen Electric Holder for lamp-filaments.
US2006820A (en) * 1931-07-09 1935-07-02 Adams Maude Illuminating device
US2219510A (en) * 1935-12-28 1940-10-29 Birdseye Electric Corp Reflecting electric lamp
US2232816A (en) * 1940-01-19 1941-02-25 Gen Electric Electric lamp
US2434478A (en) * 1943-12-22 1948-01-13 Westinghouse Electric Corp Incandescent electric lamp and method
US2449679A (en) * 1944-11-30 1948-09-21 Gen Electric Lamp filament support and connection

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US773805A (en) * 1902-09-29 1904-11-01 Albert W W Miller Incandescent electric lamp.
US797593A (en) * 1903-09-03 1905-08-22 Albert W W Miller Incandescent electric lamp.
US1022543A (en) * 1907-03-13 1912-04-09 Gen Electric Holder for lamp-filaments.
US2006820A (en) * 1931-07-09 1935-07-02 Adams Maude Illuminating device
US2219510A (en) * 1935-12-28 1940-10-29 Birdseye Electric Corp Reflecting electric lamp
US2232816A (en) * 1940-01-19 1941-02-25 Gen Electric Electric lamp
US2434478A (en) * 1943-12-22 1948-01-13 Westinghouse Electric Corp Incandescent electric lamp and method
US2449679A (en) * 1944-11-30 1948-09-21 Gen Electric Lamp filament support and connection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519865A (en) * 1967-09-19 1970-07-07 British Lighting Ind Ltd Low pressure alkali metal discharge lamps with protected lead wires

Also Published As

Publication number Publication date
GB674970A (en) 1952-07-02
BE490002A (enrdf_load_stackoverflow)
DE817180C (de) 1951-10-15
CH277140A (it) 1951-08-15
FR990100A (fr) 1951-09-17

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