US2329435A - Light fixture - Google Patents

Description

J, coLuccl LIGHT FIXTURE Sept. 14, 1943.

Filed Nov. 18, 1941 2 Sheets-Sheet 1 INVENTOR. JOHN COL A TTORN E Y.

J. COLUCCI LIGHT FIXTURE Sept. 14, 1943.

2 Sheets-Sheet 2 Filed Nov. 18, 1941 INVENTOR JOHN CQL U6 6/ 061 ha 2 0 L a 6 Z w 1 V M xv 9 WM W m ATTORNEY Patented Sept. 14, 1943 John Colucci, Brooklyn, N. Y., assignor to Isidor Rosenblatt and Max Rosenblatt, copartners doing business as Globe Lighting Fixture Mfg.

00.. Brooklyn. N. Y.

. Application November 18, 1941; Serial'No'. 419,588

I 8 Claims.

This invention relates to electric light fixtures and is especially useful in connection with electric light fixtures in which fluorescent or other lamp tubes are used. p

The primary object of the invention is to provide an electric light fixture oflthe type which is provided with an elongated translucent shade or cover with means to mount the said shade or' cover in such manner as to facilitate access to the interior of parts of the fixture-for example, to the tube lamp, to the inside of the shade or cover, etc. In accordance with the preferred form of the invention the mounting of the shade or cover is such that it is unnecessary to remove the cover in order to obtain access to interior parts of the fixture or for cleaning'the lamp hade on the inside thereof.' Also, said mounting permits the installation and removal of the tube lamps without removing the shade or cover from the fixture. 4

Another object of the invention is to provide an electric light fixture of the designated type with means for mounting the lamp shade in such.

manner that the latter can beplaced in position without removing the shade-supporting means or other parts of the fixture.

A yet further object of the invention i s gen- I erally to improve electric light fixtures in respect to the means for supporting the lamp shade.

The above mentioned and other objects, fealowing. description of the preferred embodiment of the invention, reference being had to the accompanyingfiliustrative drawings. It will be understood that while the drawings and description are of the present preferred. embodiment of the" invention, they are not tonbe considered in limb.

tation thereof except to the extent specified in the claims appended hereto. A a

g In the drawings:

Fig. 1 is a perspective view fixture embodying the present invention;

Fig. 2 is aview similar to Fig. 1 showing the shade-supporting'means displaced from the main of an electric light tures and advantages of the invention will be. more fully explained in connection with the folpart of the fixture in'order to afiordfaccess to the interior of the fixture; v

Fi 3 is a view on a larger scale of the mount-" ing means of the present inventionfor each end of the shade, and illustrates in dotted lines how] the shade-supporting-means can be swung for increasing the size pf the opening between the upper edge of the shade and the adjacent part of the fixture for facilitating access to themthe shade; e I p Fig. 4 is'an enlarged sectional view on the line 44 of Fig.3;

terior of the fixture or to the inner surface of Fig. 5 is. an enlarged'sectional view on the line 5-5 of Fig. 2;

Fig. 6 is an enlarged sectional 'view'on the Fig.7 is a perspective view 'of the companion bracket members forming parts of th shade mounting means.

Referring now to the drawings in further 'de-' tail, the 'electrio'light fixture l0 embodying the present invention is here shown as of the -fiu-' crescent light type and of the type which is usually suspended from a ceiling by'a suitable device (not shown) with which the art isfamiliar,

The fixture comprises a main frame or casing I2 on which'one or'more fluorescent light tubes M (Fig. 2) are supported. Said frame 12 is provi'ded with a lamp shade or cover lfi wliich is translucent for permitting the passage of light from the fluorescent tube lamps but'which is preferably sufficiently opaque to conceal the fluorescent light tubes l4 and'other parts'positioned interiorly'there'of. It will be understood that shade or cover I6 is preferably formed of glass 1 but may' be made of any other suitable material,

for exampleaplasti'c. v a q a The means for supporting shade l6 comprises f members ifl secured to and depending from frame I2. Each of said members I8 has; a wall l9 and an inwardly projecting flange Isa forming a ledge on which the adjacentend portion of shade Iii rests, the ends IBa of the shade being indicated in dotted 'lin'es 'in Fig. -2. As here shown, flange l9d conforms to the contour of the shade. Said members 18 constitute parts of the mountingv means of 'the'present invention and are each attached to the adjacent"ends 20 of casing H by a bracket 22 forming a part of said mounting, means.- As the bracket 22 for each frame member I8'is'of the same construction a description of one will=be"sufiicient. I

Bracket 22 comprises the companion relatively movable bracket members 24 and 26 shown in perspective in Fig. '7. Bracket member 24 is se-- cured to end Wall 23 'ofirame I2 in any suitable I way as by screws 28, for which purpose said bracket member is provided with aperturesiifl for the passage of said scre'ws. Said bracket has inturned'side edges32 which form longitudinally extending guideways 34 in which the laterally oflsetmarginal side edge portions 36 of bracket member fli are slidably. received, said side edge portions 32 and 36 providing cooperating guiding portions between the companion members 24 and 26. The marginal end. portions 36 of bracket member 26 are pressed out of the plane of the main body portion 38 of said bracket member whereby to provide a space 40 between the companion bracket members. Bracket member 24 is provided near? the upper end thereof with a centrally disposed hole'42 which registers with an opening 43 in the adjacent end wall 20 of easing l2, and the companion bracket member 26 is provided near its upper end with a centrally disposed arcuate slot 44. When the end frame or cover supporting members I! in-theirnorma'l or upper positions, as illustrated in Figs; 1 and- 6, arcuate slot 44 registers with hole" 42 to permit the passage of a screw 46 carried by member I8 to engage end portion 20 of frame' |2 in'sa'id- I parts 20 of frame I2 and from engagement with opening'43 for securing said frame member 18 releasably inits upper or normal position.

As illustrated in: Figs; and 6,, screw 46- engages member l8 in a threaded opening, 48 formed: in the latter.. 'Itwill be noted. that screw 46 has a portion 41 of its shank nonrthread ed, theouter I shank .portion- 4:111 being. screwthreaded. The length of screw-threaded shank-T portion; 4111' is such that} when the outer end of screw 46 engages opening 43 in end portion. 30,.

said portion 41a has disengaged threaded opening 4am. member l=8-andrtherefom doesnottend'.

to force member l8 away fromendw portion during the rotation of the screwnin: engagement with said end portion; as it. would do if the threaded part of. the-shank of: thescrewengaged:

simultaneously in openinge and 431 Itwili be j understood that thescrew shank through" penings? 42 and-44 with. a. slight clearance and" has no threaded engagement. in said openings;- When.- screw 46 is moved from its projected positionillustrated irr- Figifi inwhich-it engages end illustrated-in Fig. 5,-bracbet member fiend the companion frame: member l0: can: move rectilinear-lydownwardly, to: theretremed position illustrated in: Fig, '2, thefdownmrdmovement of bracket member -2 6 being: limited by: the engages mentof struck-out downwardly projeetingtongue portions 50: on said. bracket member with: the

20 of the casing, .tolthe retraotedpositiont' thereof thereof shown in Fig. 1. For this purpose each end portion 28 is provided with an out-turned flange 62 and each member I8 is provided with a shoulder 64 adjacent its upper edge in position to engage flange 62, as illustrated in Fig. 6. The companion flanges 62 and shoulders 64 thus constitute stop means for limiting upward movement of members l8 and for prodetermi'ning the normal position thereof, and'further it will be understood that when shoulders 64 engage flanges 62 screws 43 register with openings 43 in the adjacent end. portions, respectively, of frame l2.

From the above description it will be readily understood thatth'e' screws 46 constitute releasable means for holding the shade-supporting means in positionito support the shade in its normal position, and that by retracting said screws from engagement with the adjacent end the" adjacent bracket member. 24 the shade-supportingmeans constitutedby members It isperserting or replacing the tube lamp or lamps M and for other purposes. It will! be noted. also that when the: shade supporting meainsis in, the

retraetedposition thereofthe shadecambe swung toward and away from frame: Hg, in t wo direo tions, asin-dicated by the dottedlines and byrthe arrow A' in 3;"to' facilitate instlllflziom and removal oflamps It and tofacilitate aocessatv the inner surface of said shade for'cleanmg. the It will-be understood that shade M can:

be; insertedand" removed from bewmeh members- 1 l8,-while tbelatterare attacmd to lfl 'by' moving said shade into and 01117 104 pdsitibn in a same.

direction along-the-contoun of flanges I80;

\Vhile- I- have shown! and described thepee understood that the latter may be embodied otherwise than as herein speoifi'cally 'shbwmor described" and it will-be understood further that in the illustrated embodiment of the-inventioncertain. changes in the. details. ofconstructionand in the arrangement of par-ts may be maide.

Therefore, as indicatedabove l do not wish to be limited to the construction herein shown= orlaterally bent upwardly projecting: tonguerpon tions. 52 0f thereompanionbracket member 24.

Bracket member. 261s: pivotally mounted on the adjacent frame: member l8- at: theninncrsurface I thereofby-apin 54 fixed to frame' member Mand projecting from= the inner sm faoe thereof: and: engaging a nut; 58 fixed; to bracket". member. 26;

said pin 54=being threaded andiengagin'g said-nub 1 56: in athreaded; opening 58. Arcimulan rib M is. formed on the. much surfaceiofk frame member; l8 and engages the: adjacent surface of .body' portion 33 of bracket; memberr Frame. mem

ber' l8 is thussecur'edto. bracket'ntember and:

can swing on the-latter aboutipinfl; amindicated' in Fig. 3; about-awards: parallel tmthe tube lamp when said bracket is moved. tot-the'posltion illustrated in Fig. 2, screwlibein-g'out oi engagement with hole.43 of:the adjacent-end 20 0f theacasing.

deseribedexc'ep't as. may-be required by the scope of the" appended claims;

Having thus described my'invention, what I claim-and desireto secure by. Letters Patentis:

1-.-I'n a light fixture'havlnga main frame tor alamp and a translucent shade for said' l'amp, ,means for supporting said means for mounting said shade-supporting means on said frame comprising vertically disposed relatively slidable members attached'to said frame and to. 7

saidshade-supporting means; respectively; whereby said shade-supportingmeens' is movable upwardly and downwardly towardandaway from said frame to normal and retracted posk tions', respectively; means: plvotany' connecting said shade-supporting means to the 'slidabld 5 members. attached" therein whereby said shadesupport-ing means-is pivotal] movable-m thdm' tracted' position thereof-- ina direction tans versely of the frame, andadrlltionahmesnscan ried by said shade-supporting means-and mleasablyenaii ezrble with said frame forsreleaseblyattaching: said shade supportzmgmeansto said" frame to'prevent saidupanddown and. said pit otal 1 movement of said shade-supporting means.

2. In a light fixture having a' main frame for a lamp anda translucentshade for saidlamp ferred embodiment of my invention, it willabe.

means for supporting said 'fshade, releasable means for securing said shade-supportingmeans in one position to hold the'shadein normal 'posi-'- tion in relation to saidlamp, and means comprising relatively movable members attached to: said frame and to said shade-supporting means, respectively, for releasablyholdingthe latter in another position for supporting the-shade in retracted position-when said securing rnean'sis'released, saidmembers being relatively movable in the direction-extending between said normal and said retracted positions of said shade, said shade-supporting means having a pivotal connection with said members attached thereto whereby said shade can be swung in a direction transversely of said first mentioned direction toward and away from said frame when said shade is in said retracted position thereof.

3. In a light fixture having a main frame for a lamp and a translucentyshade for said lamp, means for supporting said shade, releasable means for securing said shade-supporting means in one position to hold the shade in normal position in relation to said lamp, pairs of relatively movable companion members attached to said v ing a pivotal connection therewith whereby said shade-supporting means are pivotally movable, and means carried by said shade-supporting means and engageable with said members which are attached thereto for limiting the pivotal movement of said shade-supporting means.

4. In a light fixture having a main frame for a lamp and a translucent shade for said lamp, means for supporting said shade, releasable means for securing said shade-supporting means in one position to hold the shade in normal position in relation to said lamp, pairs of relatively movable companion members attached to said frame and to said shade-supporting means, respectively, for releasably holding the latter in another position for supporting the shade in retracted position when said securing means is released, said companion members 'being in slidable engagement and having cooperating guiding portions for guiding the shade-support ing means for movement toward and away from said frame, said members which are attached to said shade-supporting means having a pivotal connection therewith whereby said shade-supporting means are pivotally movable, and means carried by said shade-supporting means and engageable with said members which are attached thereto for limiting the pivotal movement of said/shade-supporting means and interengaging means on said companion members for limiting the relative movement of said companion members in one direction whereby to limit said movement of said shade-supporting means away from the frame.

5. In a light fixture having a main frame for a lamp and a translucent shade for said lamp, means for supporting said shade, releasable means for securing said shade-supporting means in one position to hold the shade in normal position in relation to said lamp, pairs of relatively movable companion members attached to said frame and to said shade-supporting means, re.- spectively, for releasably holding the. latter in another positionfor supporting the shade in retracted position whensaid securing means is released, said companion members being in slidable engagement and having cooperating guiding portionsfor guiding the shade-supporting.

means for'movement toward and away from said frame," and "pivotal 3 connections" between said shade-supporting means and the member of each pair which isattach'ed thereto whereby said shade can be swung toward and away from said frame when said shade is in said retracted position thereof.

6. In a light fixture having a main frame for a lamp and'a translucent shade for said lamp,

means for supporting said shade, releasable means for securing said shade-supporting means in one position to hold the shade in normal position in relation to said lamp, pairs of relatively movable companion members attached to said frame and to said shade-supporting means, re-

spectively, for releasably holding the latter in another position for supporting the shade in retracted position when said securing means is released, said companion members being in slidable engagement and having cooperating guiding portions for guiding the shade-supporting means for movement toward and away from said frame, interengaging means on said companion members for limiting the relative movement of said companion members in one direction whereby to limit said movement of said shade-supporting means away from the frame, and pivotal connections between said shade-supporting means and the member of each pair which is attached thereto whereby said shade can be swung toward and away from said frame when said shade is in said retracted position thereof.

7. A light fixture comprising a main frame for a lamp, a cover for said frame, and means for mounting said cover on said frame comprising cover-supporting members, and vertically disposed brackets for supporting said cover-supporting members, respectively, each of said brackets comprising vertically disposed relative-,

- ly movable companion members one of which is thereof to positions in which said cover is supported in retracted position to provide access to the inside of said cover while the latter is supported by said cover-supporting members and while said cover-supporting members are at: tached to said main frame, a pivotal connection between each of said cover-supporting members and the companion bracket member, which is secured thereto, each of said bracket members which is secured to said cover-supporting members having an arcuate slot, and means carried by said cover-supporting members and engageable in said arcuate slots for limiting the pivotal movement of said cover-supporting members in relation to said companion bracket members.

8. A light fixture comprising a main frame for a lamp, a cover for said frame, and means for mounting said cover on said frame comprising cover-supporting members, and brackets for supporting said cover-supporting members, re-

sneativelmeanh at ma rhmnkets cumming inelatively movable-Mamba: znf which 5s secured to a companion movaesmmmgvmember :srmi.v the other m which is seemed to apart or :said

of said acomr while \the clutter is smaported by 10 said ucover supporflinz members imd'whfle said coweysuppcrting membexs an attached mo said min mame, and means for zbly seem-ins saidcouexssuppnrflng -mmbens in said first meniqioned positions themed; said last mentioned means comprising swans -hhx=eadedfi1reugh said cover-supporting members, respectively,

being out $01 'thneeded engagement with :said members when thewscrews are in threaded engagement with said parts a! the name. 1

' V I JOHN GOIJUCCI.

and having ments with adjgoent parts, respectively. of said frame, screws-

Images