US2399501A - Tubular lamp fixture - Google Patents

Tubular lamp fixture Download PDF

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US2399501A
US2399501A US562082A US56208244A US2399501A US 2399501 A US2399501 A US 2399501A US 562082 A US562082 A US 562082A US 56208244 A US56208244 A US 56208244A US 2399501 A US2399501 A US 2399501A
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Prior art keywords
lamp
openings
contact
disks
fixture
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US562082A
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Adolf G Mueller
Frederick C Dazley
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General Electric Co
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General Electric Co
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00Fastening of light sources or lamp holders
    • F21V19/0075Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
    • F21V19/008Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps
    • F21V19/0085Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps at least one conductive element acting as a support means, e.g. resilient contact blades, piston-like contact
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00Coupling 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
    • H01R33/05Two-pole devices
    • H01R33/06Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/065Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting starter switches
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00Coupling 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
    • H01R33/05Two-pole devices
    • H01R33/06Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/08Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp

Definitions

  • the present invention relates to fixtures for tubular lamps such as fluorescent lamps.
  • the object of the invention' is to provide an improved xture for supporting tubular lamps and an improved lamp holder for use in tubular lamp fixtures, and for a consideration of what we believe to be novel and our invention attention is directed to the following specification and to the claims appended thereto.
  • the invention is shown as embodied in a fixture for two lamps but it will be understood that the invention is not limited necessarily to a two-lamp fixture, as lt may be utilized in a xture for only one lamp or in a fixture for more than two lamps.
  • Fie'. 1 is a perspective view of a lamp fixture embodying the invention
  • FIG. 1 is a perspective view on a larger scale,- partly broken away and partly in section, of the fixture Shown in Fig. 1;
  • Fig. 3 is a face view looking at the underside of the fixture, the central portion of the xture being broken away and certain parts being shown in section;
  • Fig. ⁇ 4 is an exploded perspective view ⁇ of parts which go to make up a lamp holder;
  • Fig. 5 is a transverse sectional view of the fixture looking toward one of the lamp holders;
  • Fig. 6 is a detail sectional view through one 0f the lamp holders taken on line ii-h Fig. 3; and
  • Fig. 7 is a detail perspective view partly broken away of a modification.
  • the fixture comprises two lamp holders l and 2 which are alike in structure and are mounted in spaced relation to each other at opposite ends of a channel strip Si which may be shaped in cross section as shown in Fig. 5. Attached to channel strip t and serving to close its open side is a reflector t. Mounted on top of the channel strip is aballast 5. Tubuiar lamps, for example uorescent lamps of a known type, are indicated at t, their end contact pins being indicated at l. in each lamp holder is a starter t, the starter for one lamp of the pair I6 is of a length to iit nicely between the inturned inner edges-of the channel strip as shown clearly in Fig. 2 and 5.
  • cover plate In cover plate it are two round openings 2t' of a. diameter slightly greater than that of the tubular lamp with which the holder is to be used and inline with each opening is Aa cover disk 25.
  • the cover disks 25 are supported on the pairs of posts 2t and 2i,
  • the disks being provided with spaced openings 26 Lili dii
  • Each holder comprises a shallow rectangular casing having a bottom wall ii, side walls iii and i i, an end wall i2, a top wall i3 and an open front closed by a cover plate it.
  • the casing is provided with walls which implement an extension i5 of less length than the main body of the casing, thus providing shoulders l5 on each side of the extension.
  • Attached to extension i5 are corner brackets il having suitable openings It through which extend bolts I9 (Fig. 2) for fastening the holders to channel strip 3.
  • Extension titl through which the posts pass with a loose t.
  • In each cover disk 2% is a pair of openings 2l sized and spaced to receive a pair of lamp pins l.
  • a contact carrying block 2t of. insulating material Positioned in casing extension iii is a contact carrying block 2t of. insulating material. It is supported between the' top wall of extension i5 and struck-in ears 29 on the side walls of the extension and is held in place by cover plate iii, the upper edge of which partly overlaps block 2t as shown particularly in Fig. 6, block 2t being provided with a transversely extending recess in which the upper edge of the cover plate rests, the recess being of a depth such that the outer surface oi' the cover plate is ilush with the outer surface of the block.
  • insulating block 2t Mounted on insulating block 2t are two pairs of lamp pins engaging contacts 3d and 3i and a pair of starter contacts t2. They are fastened to the block by suitable screws iii.
  • the screws t3 that hold in place contacts iii, one of the contacts it and one of the contacts t2 also hold in place angle strips 3d which rare located in recesses in the block; these angle strips are electrically connected to the respective contacts, and are provided with binding screws 35 for fastening electric wires to the contacts.
  • tacts tl and t2 are connected together by a metal strap 3B held in place by the corresponding screws til.
  • Contacts dit and ti are in the form of springr strips having one end attached to the block and the other end free.
  • casing 40 is positioned in line with an opening in wall 9 and is provided with wings 4I which may be welded or otherwise suitably attached to wall i2. Insulating disk 39 is held in position by means of inturned ears on casing 40 and/wings 4i as shown particularly ln Fig. 4.
  • Casing 40 is of a size to receive a starter 8. The starter is positioned in the casing with its pins projecting through the keyhole slots into engagement with the ends of the contact strips 32.
  • the refiector is fastened to the channel strip by cross straps 44 (Figs. 3 and 5) held in place by studs 46 which thread into tapped openings in U-shaped brackets 41. Straps 44 are provided with offset portions 48 at their centers which seat in openings in the reflector to center the reiiector with respect to the channel strip.
  • Conductors for wiring the fixture are indicated at 50, In the present instance, there are three conductors extending from the ballast to each lamp holder and one conductor which extends from one lamp holder to the other. They extend along the channel strip and may be held in the channel of the strip by suitable transversely extending rods which extend beneath the wires and have their ends held by the channel strip walls as shown clearly in Fig. 2.
  • the ends of conductors 50 are clamped, molded or otherwise held between two strips 52 fastened together by screws 53 and are spaced to correspond to the spacing of holes 31 in block 28.
  • all the conductor ends may be at one time inserted through the openings 31 to position beneath the heads of vscrews 35 after which the screws may be tightened, the heads of the screws being accessible through an opening 54 1n the top wall of extension l5. This eliminates the possibility of Wirt ing the fixture incorrectly.
  • the ballast 5 is attached to the channel strip by bolts 55, the lead wires 50 from it being brought down through openings 56 in the top wall of the channel strip.
  • a channel strip 3 of the desired length is provided and the ballast 5, having the ends of itslead wires clamped between the strips 52 (a thing which may be with 44 and the end plates 42 for the channel strip put in place.
  • the lamp holder is simple in structure and is capable of being manufactured at low cost.
  • the several contacts 30, 3i and 32 can be quickly and easily assembled on the block 28 after which the block is pushed into position in extension I5 between the top wall of the extension and the struck-in ears 29.
  • the block is assembled in the casing without the use of screws.
  • the cover disks 25 are positioned over the pairs of posts 20 and 2i in engagement with the ends of contact strips 30 and 3l after which the coverplate i4 may be put in position and fastened by the screws 22,
  • 4 serve normally to hold the cover disks 25 in engagement with the inner surface of cover plate i4 as shown clearly at the lower right hand portion of Fig. 3.
  • the pins at one end of the lamp are passed through the holes 21 of the-one cover disk into engagement with the ends of the contact strips after which the end of the lamp is pushed through the opening 24 in the cover plate against the action of the spring contact strips until the other end of the lamp can be brought into line with the corresponding cover disk of the other lamp holder.
  • This is illustrated in the lower half of Fig. 3 where it will be seen that the left hand end of the lamp extends through the opening 24 and has pushed cover plate 25 back away from the opening, the lamp pins 1 being in engagement with the contact strips, The lamp havingbeen brought to the position shown in the lower half of Fig.
  • the space between the two lamp holders is less than the lamp length so that the lamp ends lie within openings 24.
  • the lamp may be easily removed by shifting it axially in one direction or the other to bring the pins 1 out of contact with the lamp holder at' the one end after which such end of the lamp may be moved beyond the lamp holder and removed from the other lamp'holder by an axial movement.
  • the starters 8 are positioned in the casings 40 with their contact pins in engagement with the ends of contacts 32. They extend part way into the lamp holder casing, projecting suiciently far outside so that they are readily accessible for replacement.
  • a starter for a lamp is not needed. In such instances, it is desirable to short circuit the lamp pin contacts after the lamp is in position.
  • An arrangement for performing this function is shown in Fig. '1 wherein an additional spring contact strip 58 is provided in connection with each of the pairs ot contacts 30 and 3
  • Contact strip 58 is fastened at its inner end directly to one of the pair of contacts and projects diagonally across the other of the pair, the arrangement being such that when the pair of contacts is engaged by the pins oi' a tubular lamp and moved outwardly, the contact of the pair to which contact strip 58 is not connected is brought into engagement with contact strip 58 to connect together the contact strips of the pair.
  • a lamp holder comprising, in combination, a housing having a top wall formed with an extension and end walls provided with shoulders extending outwardly from opposite ends of said extension, a front wall of said housingV being provided wlth spaced openings of a diameter to receive a tubular lamp, said openings being located in the area formed by said shoulders, cover disks closing said openings; said disks being provided with a pair of holes for receiving the contact pins oi a lamp and beingmounted for movement inwardly from said openings, a block of insulating material forming a terminal means located vin said extension, spaced pairs of contact members carried by said terminal block, the individual contacts oi' each pair'extending downwardly within the housing to points inline with the holes in the corresponding cover disks for engaging the lamp contact pins and terminal means carried by said insulating block for making electrical connections with the contact members.
  • a lamp holder comprising, in combination, a housing having a top wall formed with an extension, a front wall of said housing being provided with spaced openings of a diameter to receive a tubular lamp, cover ⁇ disks closing said openings, each of said disks being provided with a pair of holes for receiving the contact pins of a lamp, said disks being slidably mounted for movement inwardly from said openings, a block o!
  • terminal plate located in said extension
  • contact members carried by said terminal plate extending downwardly within the housing to points in line with the holes in the corresponding cover disks for engaging and making an electrical connection with the lamp contact pins
  • one face of said terminal plate being located substantially in the plane of the iront wall of the housing and being provided with openings for receiving conductors for making electrical connections with said contact members, and means carried by said terminal plate i'or securing the conductors to said contact members.
  • a lamp holder comprising, in combination. a housing having a top wall formed with an extension, a front wall of said housing being provided with spaced openings of a diameter to receive a. tubular lamp, cover disks closing said openings, each ot said disks being provided with atleast one hole for receiving the contact pin o!
  • a, lamp said disks being slidably mounted for movement inwardly from said openings, a terminal plate of insulating material located in said extension, contact members carried by said terminal plate, said contact members extending away from the plate within the housing to points in line with the holev in the corresponding cover disks for engaging and making an electrical connection with the contact pin of a lamp, the face of said terminal plate adjacent the front wall of said housing being provided with openings for receiving conductors for making electrical connections with said contact members, and screw means carried by said terminal plate for securing the conductors to said contact members, the aforementioned top wall of said housing being provided with an opening to render said screws accessible.
  • a lamp holder comprising, in combination, a housing, a front wall of said housing being provided with spaced openings for receiving tubular lamps, cover disks overlying said openings, each of said disks being provided with holes for receiving the contact pins of a lamp and being movable inwardly from said front wall upon insertion of a lamp in the holder, a terminal plate of insulating material located in said housing between the contact disks, contact members carried by said terminal plate Land extending away from the plate to points'in line with the holes of corresponding cover disks for making electrical connections with the lamp contact pins, the bottom wall of said housing being provided with an opening therein, a casing within said housing located between the cover disks in line with said bottom opening to form a well for receiving a starting switch, and contact blades carried by said terminal plate and extending into alignment with said well to form socket contacts for the starter.
  • a lamp holder comprising, in combination, a housing having at top wall formed with an extension, a front wall of said housing being provided with spaced openings for Vreceiving tubular lamps, cover disks overlying said openings, each of said disks being provided with holes for receiving the contact pins of a lamp, said disks being movable inwardly from said front wall upon insertion of a lamp in the holder, a terminal plate of insulating material located in said extension, flexible contact blades carried by said plate and extending away from the plate to points in line with the holes in the corresponding cover disks for making electrical connections with the lamp contact pins, the bottom wall of said housing being provided with an opening therein, socket means-in said housing located between the cover disks and in line with said opening for receiving a starting switch inserted through said opening, and contact members carried by said terminal plate and extending into engagement with said socket means for making an electrical connection with the starting switch.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Description

April 30, 1946. A. G. MUELLER ETAL v 2,399,501
TUBULAR LAM FIXTURE iled Nov. 6, 1944 2 SheebSv-Sheel'. 1
Inventor-s: Adolf G. Mueller', Frederick C. Dazleg,
lTheir' Atta-neg.
Ap 30, 1946. A. G. MUELLER ETAL TUBULAR LAMP FIXTURE 'Filed Nov. 6.V 1944 2 Sheets-Sheet 2 Inventors' AdolF C3. Mueller',
l' Frederick @.Dazleg,
'Their Attorneg.
P'atented Apr. 30, 1.9416
2,399,501 l mm LAMP FIXTURE Adolf G. Mleller', Fairfield, and Frederick C. Dazley, Stratford, Comi., assignors to General Electric Company, a corporation oi.' New York Application November 6, 1944, Serial No. 562,082
s claims. (ci. 11s-32s) The present invention relates to fixtures for tubular lamps such as fluorescent lamps.
The object of the invention'is to provide an improved xture for supporting tubular lamps and an improved lamp holder for use in tubular lamp fixtures, and for a consideration of what we believe to be novel and our invention attention is directed to the following specification and to the claims appended thereto.
In the present instance, the invention is shown as embodied in a fixture for two lamps but it will be understood that the invention is not limited necessarily to a two-lamp fixture, as lt may be utilized in a xture for only one lamp or in a fixture for more than two lamps.
In the drawings Fie'. 1 is a perspective view of a lamp fixture embodying the invention; Fig. 2
is a perspective view on a larger scale,- partly broken away and partly in section, of the fixture Shown in Fig. 1; Fig. 3 is a face view looking at the underside of the fixture, the central portion of the xture being broken away and certain parts being shown in section; Fig.` 4 is an exploded perspective view` of parts which go to make up a lamp holder; Fig. 5 is a transverse sectional view of the fixture looking toward one of the lamp holders; Fig. 6 is a detail sectional view through one 0f the lamp holders taken on line ii-h Fig. 3; and Fig. 7 is a detail perspective view partly broken away of a modification.
Referring to the drawings, the fixture comprises two lamp holders l and 2 which are alike in structure and are mounted in spaced relation to each other at opposite ends of a channel strip Si which may be shaped in cross section as shown in Fig. 5. Attached to channel strip t and serving to close its open side is a reflector t. Mounted on top of the channel strip is aballast 5. Tubuiar lamps, for example uorescent lamps of a known type, are indicated at t, their end contact pins being indicated at l. in each lamp holder is a starter t, the starter for one lamp of the pair I6 is of a length to iit nicely between the inturned inner edges-of the channel strip as shown clearly in Fig. 2 and 5. Fixed to end wall I2 and projecting forwardly toward thel open side of the casing are two pairsof diagonally spaced posts 20 and 2i shaped to provide shoulders at their free ends against which cover plate I 4 rests. The ends of the posts beyond the shoulders project through openings in the cover plate and are adapted to receive screws 22 for fastening the cover plate in position against the shoulders on posts 20 and 2l. Tosupport the edges of the cover plate, the
casing walls are provided with struck-in ears 23 to provide shoulders against which the plate edges y are heldby the screws. In cover plate it are two round openings 2t' of a. diameter slightly greater than that of the tubular lamp with which the holder is to be used and inline with each opening is Aa cover disk 25. The cover disks 25 are supported on the pairs of posts 2t and 2i,
the disks being provided with spaced openings 26 Lili dii
being in one holder and the starter for the other lamp of the pair being in the other holder.
Each holder comprises a shallow rectangular casing having a bottom wall ii, side walls iii and i i, an end wall i2, a top wall i3 and an open front closed by a cover plate it. At its top, the casing is provided with walls which denne an extension i5 of less length than the main body of the casing, thus providing shoulders l5 on each side of the extension. Attached to extension i5 are corner brackets il having suitable openings It through which extend bolts I9 (Fig. 2) for fastening the holders to channel strip 3. Extension titl through which the posts pass with a loose t. In each cover disk 2% is a pair of openings 2l sized and spaced to receive a pair of lamp pins l.
Positioned in casing extension iii is a contact carrying block 2t of. insulating material. It is supported between the' top wall of extension i5 and struck-in ears 29 on the side walls of the extension and is held in place by cover plate iii, the upper edge of which partly overlaps block 2t as shown particularly in Fig. 6, block 2t being provided with a transversely extending recess in which the upper edge of the cover plate rests, the recess being of a depth such that the outer surface oi' the cover plate is ilush with the outer surface of the block.
Mounted on insulating block 2t are two pairs of lamp pins engaging contacts 3d and 3i and a pair of starter contacts t2. They are fastened to the block by suitable screws iii. The screws t3 that hold in place contacts iii, one of the contacts it and one of the contacts t2 also hold in place angle strips 3d which rare located in recesses in the block; these angle strips are electrically connected to the respective contacts, and are provided with binding screws 35 for fastening electric wires to the contacts. tacts tl and t2 are connected together by a metal strap 3B held in place by the corresponding screws til. Contacts dit and ti are in the form of springr strips having one end attached to the block and the other end free. In the block are suitably positioned holes 3l through which the ends of conductors may be passed to positions under the heads oi the binding screws 3b to be clamped by The lother of the consuch screws. The free ends of the pairs of contact strips 30, 3| terminate in line with the openings 21 in the cover disks 25, the free ends engaging the cover disks to hold them against the back surface of cover "plate i4. The free ends of contact strips 32 are bent at right angles and are positioned in line with curved keyhole' slots 38 in an insulating disk 39 which is fastened over the end of a tubular casing 40 fixed to bottom wall 9 of the casing. As shown clearly at the left hand side of'Fig. 2, casing 40 is positioned in line with an opening in wall 9 and is provided with wings 4I which may be welded or otherwise suitably attached to wall i2. Insulating disk 39 is held in position by means of inturned ears on casing 40 and/wings 4i as shown particularly ln Fig. 4. Casing 40 is of a size to receive a starter 8. The starter is positioned in the casing with its pins projecting through the keyhole slots into engagement with the ends of the contact strips 32.
The ends of the channel strip 3 are closed by end plates 42 held in place by screws 43, as shown clearly in Fig. 6.
The refiector is fastened to the channel strip by cross straps 44 (Figs. 3 and 5) held in place by studs 46 which thread into tapped openings in U-shaped brackets 41. Straps 44 are provided with offset portions 48 at their centers which seat in openings in the reflector to center the reiiector with respect to the channel strip.
Conductors for wiring the fixture are indicated at 50, In the present instance, there are three conductors extending from the ballast to each lamp holder and one conductor which extends from one lamp holder to the other. They extend along the channel strip and may be held in the channel of the strip by suitable transversely extending rods which extend beneath the wires and have their ends held by the channel strip walls as shown clearly in Fig. 2.
For convenience in wiring, the ends of conductors 50 are clamped, molded or otherwise held between two strips 52 fastened together by screws 53 and are spaced to correspond to the spacing of holes 31 in block 28. Thus all the conductor ends may be at one time inserted through the openings 31 to position beneath the heads of vscrews 35 after which the screws may be tightened, the heads of the screws being accessible through an opening 54 1n the top wall of extension l5. This eliminates the possibility of Wirt ing the fixture incorrectly.
The ballast 5 is attached to the channel strip by bolts 55, the lead wires 50 from it being brought down through openings 56 in the top wall of the channel strip.
In assembling a lighting fixture,a channel strip 3 of the desired length is provided and the ballast 5, having the ends of itslead wires clamped between the strips 52 (a thing which may be with 44 and the end plates 42 for the channel strip put in place.
The lamp holder is simple in structure and is capable of being manufactured at low cost. The several contacts 30, 3i and 32 can be quickly and easily assembled on the block 28 after which the block is pushed into position in extension I5 between the top wall of the extension and the struck-in ears 29. By this arrangement, the block is assembled in the casing without the use of screws. After the block is positioned in the casing, the cover disks 25 are positioned over the pairs of posts 20 and 2i in engagement with the ends of contact strips 30 and 3l after which the coverplate i4 may be put in position and fastened by the screws 22, The spring contact strips 30 and 3|4 serve normally to hold the cover disks 25 in engagement with the inner surface of cover plate i4 as shown clearly at the lower right hand portion of Fig. 3.
To insert a lamp into the fixture, the pins at one end of the lamp are passed through the holes 21 of the-one cover disk into engagement with the ends of the contact strips after which the end of the lamp is pushed through the opening 24 in the cover plate against the action of the spring contact strips until the other end of the lamp can be brought into line with the corresponding cover disk of the other lamp holder. This is illustrated in the lower half of Fig. 3 where it will be seen that the left hand end of the lamp extends through the opening 24 and has pushed cover plate 25 back away from the opening, the lamp pins 1 being in engagement with the contact strips, The lamp havingbeen brought to the position shown in the lower half of Fig. 3, it is then permitted to move toward the right to permit the pins 1 at the right hand end of the lamp to pass through the openings 21 in the adjacent cover disk into engagement with the spring contact strips of the other lamp holder. The lamp then positions itself between the two sets of contact strips, the location of the end of the lamp when fullypositioned in the fixture being shown at the upper left hand portion of Fig. 3. When l mounted in the fixture, the lamp is held firmly advantage done at the factory), is attached to it by bolts 55. Next, the strips 52 with the attached lead wires may be passed endwise through openings 56 to the inside ofl the channel; and
in position by reason of the pins 1 being located in the openings in the cover disks' 25.'w Also, it will be noted that the space between the two lamp holders is less than the lamp length so that the lamp ends lie within openings 24. As a result, the lamp is not likely to become detached from the fixture accidentally due to vibration, for example, and fall out of the fixture. The lamp may be easily removed by shifting it axially in one direction or the other to bring the pins 1 out of contact with the lamp holder at' the one end after which such end of the lamp may be moved beyond the lamp holder and removed from the other lamp'holder by an axial movement. The starters 8 are positioned in the casings 40 with their contact pins in engagement with the ends of contacts 32. They extend part way into the lamp holder casing, projecting suiciently far outside so that they are readily accessible for replacement.
In certain installations where fluorescent lamps are started by a higher starting voltage. a starter for a lamp is not needed. In such instances, it is desirable to short circuit the lamp pin contacts after the lamp is in position. An arrangement for performing this function is shown in Fig. '1 wherein an additional spring contact strip 58 is provided in connection with each of the pairs ot contacts 30 and 3| so that when a lamp is positioned in the lamp holders, it connects the two spring contact strips together. Contact strip 58 is fastened at its inner end directly to one of the pair of contacts and projects diagonally across the other of the pair, the arrangement being such that when the pair of contacts is engaged by the pins oi' a tubular lamp and moved outwardly, the contact of the pair to which contact strip 58 is not connected is brought into engagement with contact strip 58 to connect together the contact strips of the pair.
What we claim as new and desire to secure by Letters Patent of the United States is:
1. A lamp holder comprising, in combination, a housing having a top wall formed with an extension and end walls provided with shoulders extending outwardly from opposite ends of said extension, a front wall of said housingV being provided wlth spaced openings of a diameter to receive a tubular lamp, said openings being located in the area formed by said shoulders, cover disks closing said openings; said disks being provided with a pair of holes for receiving the contact pins oi a lamp and beingmounted for movement inwardly from said openings, a block of insulating material forming a terminal means located vin said extension, spaced pairs of contact members carried by said terminal block, the individual contacts oi' each pair'extending downwardly within the housing to points inline with the holes in the corresponding cover disks for engaging the lamp contact pins and terminal means carried by said insulating block for making electrical connections with the contact members.
2. A lamp holder comprising, in combination, a housing having a top wall formed with an extension, a front wall of said housing being provided with spaced openings of a diameter to receive a tubular lamp, cover` disks closing said openings, each of said disks being provided with a pair of holes for receiving the contact pins of a lamp, said disks being slidably mounted for movement inwardly from said openings, a block o! insulating material forming a terminal plate located in said extension, contact members carried by said terminal plate extending downwardly within the housing to points in line with the holes in the corresponding cover disks for engaging and making an electrical connection with the lamp contact pins, one face of said terminal plate being located substantially in the plane of the iront wall of the housing and being provided with openings for receiving conductors for making electrical connections with said contact members, and means carried by said terminal plate i'or securing the conductors to said contact members. g
3. A lamp holder comprising, in combination. a housing having a top wall formed with an extension, a front wall of said housing being provided with spaced openings of a diameter to receive a. tubular lamp, cover disks closing said openings, each ot said disks being provided with atleast one hole for receiving the contact pin o! a, lamp, said disks being slidably mounted for movement inwardly from said openings, a terminal plate of insulating material located in said extension, contact members carried by said terminal plate, said contact members extending away from the plate within the housing to points in line with the holev in the corresponding cover disks for engaging and making an electrical connection with the contact pin of a lamp, the face of said terminal plate adjacent the front wall of said housing being provided with openings for receiving conductors for making electrical connections with said contact members, and screw means carried by said terminal plate for securing the conductors to said contact members, the aforementioned top wall of said housing being provided with an opening to render said screws accessible.
4. A lamp holder comprising, in combination, a housing, a front wall of said housing being provided with spaced openings for receiving tubular lamps, cover disks overlying said openings, each of said disks being provided with holes for receiving the contact pins of a lamp and being movable inwardly from said front wall upon insertion of a lamp in the holder, a terminal plate of insulating material located in said housing between the contact disks, contact members carried by said terminal plate Land extending away from the plate to points'in line with the holes of corresponding cover disks for making electrical connections with the lamp contact pins, the bottom wall of said housing being provided with an opening therein, a casing within said housing located between the cover disks in line with said bottom opening to form a well for receiving a starting switch, and contact blades carried by said terminal plate and extending into alignment with said well to form socket contacts for the starter.
5. A lamp holder comprising, in combination, a housing having at top wall formed with an extension, a front wall of said housing being provided with spaced openings for Vreceiving tubular lamps, cover disks overlying said openings, each of said disks being provided with holes for receiving the contact pins of a lamp, said disks being movable inwardly from said front wall upon insertion of a lamp in the holder, a terminal plate of insulating material located in said extension, flexible contact blades carried by said plate and extending away from the plate to points in line with the holes in the corresponding cover disks for making electrical connections with the lamp contact pins, the bottom wall of said housing being provided with an opening therein, socket means-in said housing located between the cover disks and in line with said opening for receiving a starting switch inserted through said opening, and contact members carried by said terminal plate and extending into engagement with said socket means for making an electrical connection with the starting switch.
ADOLF' G. MUELLER.
FREDERICK C. DAZLEY.
US562082A 1944-11-06 1944-11-06 Tubular lamp fixture Expired - Lifetime US2399501A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463013A (en) * 1945-09-29 1949-03-01 Miller Co Fluorescent lighting equipment
US2564362A (en) * 1946-12-23 1951-08-14 Holdenline Company Gaseous discharge tube fixture
US2596337A (en) * 1946-03-22 1952-05-13 Benjamin Electric Mfg Co Fixture and holder for fluorescent lamps
US2606225A (en) * 1950-07-31 1952-08-05 Gen Electric Turret type slim line lamp holder
DE933525C (en) * 1952-04-17 1955-09-29 Lindner G M B H Sealed connection housing for electric light tubes
US2743424A (en) * 1954-05-26 1956-04-24 Herman Hassinger Inc Fluorescent lighting fixtures
DE972620C (en) * 1951-12-07 1959-08-20 Vossloh Werke Gmbh Socket fitting for the installation of tubular discharge lamps
DE1091670B (en) * 1958-06-11 1960-10-27 Philips Patentverwaltung Luminaire prepared for either inductive or capacitively compensated stabilized operation of a gas or vapor discharge lamp
US2972675A (en) * 1956-09-10 1961-02-21 Miller Co Fluorescent lighting fixture and socket assembly therefor
US3013146A (en) * 1958-12-16 1961-12-12 Lightolier Inc Fluorescent lighting fixture
EP0199230A2 (en) * 1985-04-16 1986-10-29 ABB CEAG Licht- und Stromversorgungstechnik GmbH Light fixture, particularly for emergency lighting
US5192218A (en) * 1989-10-23 1993-03-09 Kuiper Adrianus M Lampholder assembly

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463013A (en) * 1945-09-29 1949-03-01 Miller Co Fluorescent lighting equipment
US2596337A (en) * 1946-03-22 1952-05-13 Benjamin Electric Mfg Co Fixture and holder for fluorescent lamps
US2564362A (en) * 1946-12-23 1951-08-14 Holdenline Company Gaseous discharge tube fixture
US2606225A (en) * 1950-07-31 1952-08-05 Gen Electric Turret type slim line lamp holder
DE972620C (en) * 1951-12-07 1959-08-20 Vossloh Werke Gmbh Socket fitting for the installation of tubular discharge lamps
DE933525C (en) * 1952-04-17 1955-09-29 Lindner G M B H Sealed connection housing for electric light tubes
US2743424A (en) * 1954-05-26 1956-04-24 Herman Hassinger Inc Fluorescent lighting fixtures
US2972675A (en) * 1956-09-10 1961-02-21 Miller Co Fluorescent lighting fixture and socket assembly therefor
DE1091670B (en) * 1958-06-11 1960-10-27 Philips Patentverwaltung Luminaire prepared for either inductive or capacitively compensated stabilized operation of a gas or vapor discharge lamp
US3013146A (en) * 1958-12-16 1961-12-12 Lightolier Inc Fluorescent lighting fixture
EP0199230A2 (en) * 1985-04-16 1986-10-29 ABB CEAG Licht- und Stromversorgungstechnik GmbH Light fixture, particularly for emergency lighting
EP0199230A3 (en) * 1985-04-16 1988-09-07 Ceag Licht- Und Stromversorgungstechnik Gmbh Light fixture, particularly for emergency lighting
US5192218A (en) * 1989-10-23 1993-03-09 Kuiper Adrianus M Lampholder assembly

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