US1885431A - Electric incandescent lamp and holder thereof - Google Patents

Electric incandescent lamp and holder thereof Download PDF

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Publication number
US1885431A
US1885431A US323949A US32394928A US1885431A US 1885431 A US1885431 A US 1885431A US 323949 A US323949 A US 323949A US 32394928 A US32394928 A US 32394928A US 1885431 A US1885431 A US 1885431A
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US
United States
Prior art keywords
lamp
holder
bulb
reflector
filament
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
US323949A
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English (en)
Inventor
Grote Edwin Rudolph
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US1885431A publication Critical patent/US1885431A/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
    • H01K1/18—Mountings or supports for the incandescent body
    • H01K1/24—Mounts for lamps with connections at opposite ends, e.g. for tubular lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
    • H01R33/0836—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp characterised by the lamp holding means

Definitions

  • This invention relates to incandescent electric lamps'of the kind c'omprisin afilament extending lon 'tudinallyo an.
  • e ongated tu- Jular bod uch lam s are especially adapted for illuminating o jects from concea ed points and for this purpose are usually assembled in line in a channel or like shaped reflector,v the lamps being secured in and supplied with current through holders engagmg lateral contacts shown in the form of metal caps on the lamp bodies.
  • the object of the present invention is to provide an improved construction of tubular electric lamp and holder therefor enablin a more uniform distribution of light an a higher degree of illumination to be obtained than heretofore.
  • the lamp contacts are in the form of metal caps disposed laterally of the lamp body instead of at the ends and the filaments are carried to the ends of the glass lamp bodies so that the filaments of adjacent lamps may be brought more closely together within the reflector.
  • the lamp holder for use with thisimproved lamp comprises recessed contact devices adapted to receive the laterally disposed conreference will now be made to the accompany- I ing drawing, which illustrates a lamp and lamp holder constructed according to the invention, wherein Fig. 1 is a side elevation of the lamp.
  • Fig. 2 is a transverse vertical section thereof, taken on the line 22 of Fig. 1, 49 Fig. 3 is a front elevation, with parts broken away, showing two lamps in position in a lamp holder,
  • Fig. 4 is a transverse vertical section on the line 4-4 of Fig. 3 and Fig. 5 is a similar view on the line 55 of Fig. 3.
  • the lamp comprises a tubular glass body 1 terminating in substantially hemispherical end walls 2 and a filament 3 extending longitudinally of the body and into close proximity to the end walls thereof, said filament bein supported at intervals by wires 4 projecting mm a common glass tube or rod 5 mounted within the tubular body 1.
  • the filament supporting wire 40 at each is end of said tube 5 is inclined towards the adjacent end 2 of the lam body in order to support that portion of t e filament 3 which extends beyond the corresponding end of thev tube 5 to the supporting and current conduct- '0 ing wire 6.
  • the supports 7, which are preferably formed of steel or other resilient wire, are each connected at one end to the glass tube 5 and are secured to the wall 2 of the lamp body at the other end by means of a glass bead 1O fused on the wire 7 and to the inner surface of said wall 2.
  • shallow depressions 11 may be formed in the glass wall of the lamp body 1 to facilitate the engagement of the lamp in its holder and its subsequent retention.
  • the improved lamps made in accordance with this invention may be mounted in line with their end walls 2 in close proximity and, as each filament 3 extends practically the whole length of its lamp body, a substantially continuous line of luminous filacontact caps 9 and spring tongues or fingers adapted to press the lamp body towards said contact devices.
  • the channel shaped reflector 12 of known form is provided at appropriate points in its length, spaced to correspond to the distances apart of the contact caps 9 on the lamps to be held therein, with contact devices 13, 13a disposed adjacent one edge of the reflector.
  • Said contact devices comprise blocks of metal secured to arcuate strips 14 of insulating material at those ends thereof which pro'ect into the channel of the reflector 12 throug apertures 15 formed in said reflector.
  • Screws 16 which secure the insulating strips 14 in position transversely of the reflector and at the rear thereof, also serve to secure spring clips or tongues 17 on the front face of the reflector in such position that the bends 18 in the spring clips may engage in the recesses or shallow depressions 11 formed in the lamp bodies 1.
  • Each lamp is secured in position in the reflector by means of a pair of contacts 13, 13a and a pair of spring clips 17 co-acting therewith.
  • One of each pair of contacts, as for example 13, is formed with a central conical recess 19 to receive one contact cap 9 (see Fig. 4) whereas the other contact 1311 of the pair is formed with a V-section groove 20 directed parallel with the axis of the lamp (see Fig. 5) within which groove the other contact cap 9 is received.
  • This arrangement allows for the longitudinal expansion which occurs in the lamp body, the contact cap engaged in the groove 20 being capable of sliding along said groove without dislodging the lamp.
  • An incandescent lamp comprising an elongated glass bulb having exposed hemispherical ends, an enlongated glass supporting rod extending longitudinally within said bulb adjacent a wall thereof and anchored at the ends of the bulb, filamentcarrying posts projecting from said rod at points spaced apart along its length, a filament carried by said post extending longitudinally within the bulb and into the hemispherical ends thereof, and lateral contacts onthe bub electrically connected with the ends of said filament, said bulb having shallow sockets on the side thereof opposite that carryin said lateral contacts, said sockets being a apted to receive spring detents.
  • An incandescent lamp comprising an elongated glass bulb having hemi-spherical ends, an elongated glass rod extending longitudinally in said bulb near one side thereof, the ends of said glass rod terminating short of the hemi-spherical bulb ends and being rovided with supportin wires which proect longitudinally there om well into said hemi-spherical bulb ends, means securing said supporting wires to said bulb ends, posts carried by and projecting laterally from said glass rod, the endmost of said posts being directed obliquely beyond the ends of said glass rod, lateral contacts on said bulb, conducting wires extending from said contacts into the bulb, said conducting wires being Wrapped around said supporting wires and having projecting terminals well within said hemi-spherical bulb ends, and a filament secured at its ends to said projecting terminals of said conducting wires and secured at spaced points to said points.

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
US323949A 1927-12-13 1928-12-05 Electric incandescent lamp and holder thereof Expired - Lifetime US1885431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33685/27A GB304882A (en) 1927-12-13 1927-12-13 Improvements in electric incandescent lamps and holders thereof

Publications (1)

Publication Number Publication Date
US1885431A true US1885431A (en) 1932-11-01

Family

ID=10356121

Family Applications (1)

Application Number Title Priority Date Filing Date
US323949A Expired - Lifetime US1885431A (en) 1927-12-13 1928-12-05 Electric incandescent lamp and holder thereof

Country Status (5)

Country Link
US (1) US1885431A (enrdf_load_stackoverflow)
BE (1) BE356406A (enrdf_load_stackoverflow)
DE (1) DE536285C (enrdf_load_stackoverflow)
FR (1) FR665272A (enrdf_load_stackoverflow)
GB (1) GB304882A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901658A (en) * 1955-01-05 1959-08-25 Philips Corp Method of manufacturing a partly silvered tubular incandescent lamp
US3300675A (en) * 1964-04-03 1967-01-24 Deshaw Zoltan Electric incandescent lamp filament support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901658A (en) * 1955-01-05 1959-08-25 Philips Corp Method of manufacturing a partly silvered tubular incandescent lamp
US3300675A (en) * 1964-04-03 1967-01-24 Deshaw Zoltan Electric incandescent lamp filament support

Also Published As

Publication number Publication date
FR665272A (fr) 1929-09-17
BE356406A (enrdf_load_stackoverflow)
DE536285C (de) 1931-10-21
GB304882A (en) 1929-01-31

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