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Патент USA US2121430

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June 2l, 1938.
Filed May 22, 1936
ísatenteci `Íuine
_, 2,121,430
., 2,121,430
ÉdWinF. Guth, ‘Webster Groves,` Moi ,
vApplicationMay 22, 1936, Serial‘No. 81,262
1. claim. ' (o1. 24o-_78)
y "This invention relates to fixtures, and> with re
lrgard to certain `more speciñc features, to'elec
-'trical illuminating fixtures„
-Among the several objects of the invention
¿5 may be noted the provision of an electrical il
luminating ñxture which is adapted to provide
both direct and indirect illumination; the'- pro
vision of a fixture of the class described in‘which
the direct illumination is confined and controlled
jm ‘in direction and intensity, to a desired degree;
wires or the like 6,*»from the lower end of cap
4, is the fixture assembly comprising one ofthe
"princip-alfeatures ofthe present invention. The.
’assembly includes a reflector bowl 1, which is4
usually of truncated conical type, and which 5
faces upwardly. The lower end» ofthe bowl 'I
is extended as a cylindrical portion 8, which may
`be provided with a series of ridges or set-back
portions for the decorative effect obtained.
metal at the lower end of the cylindrical portion ‘ 10
the provision of ‘a fixture of the class described 8 is bent inwardly and somewhat back uponiit-`
wherein the direct illumination is formed yenti-rely self to provide a flange 9. Resting on the edge
, of approximately parallel rays; the provision of of the flange 9 is an upper, outwardly‘extending
an electrical illuminating ñxture of the class de
flange I0 of a cylindrical element II, the4 lower
j15 scribed which is designed to provide »ideal il
edge' of which is preferably likewise provided 15
i lumination for particular conditions, such as desk
`with an outwardly extending- flange I2. At the
lighting; and the provision of an electrical il
points that they juxtapose, the flanges 9 and Il)
luminating ñxture of the class described which -are preferably welded or soldered or otherwise
is relatively simple and economical in construc
secured together, in such manner that a space i
à ‘20 tion. Other objects will be in part> obvious'and is Yprovided therebetween for receiving the an-"20
in part pointed out hereinafter.
.The invention accordingly'comprises the ele
ments and combinations of elements, features of
construction, and arrangements of parts which
25 will be exemplified in the structures hereinafter
described, and the scope of the application of
which will be indicated in the following claim.
In the accompanying drawing, in which are il
lustrated several of various possible embodiments
of the invention,
Fig. 1 is a perspective view of a fixture embody
ing the present invention;
Fig. V2 is aV vertical section of the fixture of
IFig. 1;
Fig. 3 is a bottom plan view of the fixture of
Fig. 1; and,
_ .
Fig. 4 is a vertical section similar to Fig. 2, il
lustrating an alternative embodiment of the in
Similar reference characters indicate corre
sponding parts throughout the several views of
the drawing,
Referring now more particularly to Fig. 1,
‘ choring ends of the wires 6, so that said anchor
l ing ends are not visible from the exterior of the
fixture. The `ilxture assembly is directly sup
ported, it will be seen, by the engagement of the
wires 6 with the flange IU.
Numerals I3 and I4 indicate short cylinders
of thin material, such as sheet metal, thatare
supported on radially disposed bolts or the like
I5, which are mounted on the outer cylinder II.
The number of cylinders such as I3 and I4 that 30
are provided depends upon the type of direct
light that it is desired to obtain from the fixture.
For the majority of circumstances, the two cylin
ders I3 and I4, as shown, are usually suiiicient.
The inner surface of the bowl 1 is usually sil- 55
Vered or painted to provide a highly reñecting
surface. The bowl 'I reflects light from the bulb
5 upwardly from thev fixture, ordinarily against
the ceiling of the room, when it is reflected to
the interior of the room providing an indirect 40
light component. At the same time, direct light
is able to pass from the bulb 5 downwardly
through the circular regions between the cylin
there is shown a fixture embodying the present ' ders II, I3 and I4, providing a component of di
.4-5 invention, which is particularly suitable for ceil
rect illumination. The cylinders I3 and I4, and 45
ing mounting. Numeral I indicates a ceiling the inner surface of cylinder I I, are ordinarily
plate by which the fixture is attached. Depend
painted dead black, so that they reflect substan
ing from the plate I is a tube 2, at the lower tially no light. For this reason, they permit sub
end of which is secured an electric lamp socket stantially only light rays closely approximately
¿50 3 (see Fig. 2), which is enclosed by a cap-4. The parallel vertical rays to pass therethrough. The 50
socket 3 receives the upper end of an electric cylinders Il, I3 and I4, it will be seen, comprise
light bulb or lamp 5, of the customary pear
light-regulating louvres.
shape. The cap 4 preferably extends down a
In a preferred form of the invention, the flanges
short distance over the neck of the bulb 5.
9 and IIJ are provided with peripherally spaced
Supported by a plurality of circularly disposed
light ports or openings I‘I (see Fig. 1), through 55
which a small portion of direct and reflected light
from the bulb 5 can pass. Such light illuminates
the exterior surface of the outermost louvre Il,
to give the fixture an attractive appearance.
Some of this light further reflects from the inner
face of flange l2 upwardly in order to illuminate
the under surface of bowl 1, likewise for' the sake
of appearance. Some such reflection takes place
even when the louvre Il is painted dead black.
While the shape of the direct-light regulating
louvres 'has been shown as circular, it will be ap
parent that this is not altogether necessary.
For example, the louvres may be made in any
form or shape, in order to obtain ‘whatever shaped
region of direct illumination is required.
’I'he combination of indirect light reflected from
the ceiling of the room and direct light issuing
from the louvres of the fixture of the'present in
vention make the fixture ideally suited for such
the bottom edge of the cap 4. It is directed down
wardly, so that the rays from the bulb 5 that
normally would travel upwardly are at least in
part reiiected back downwardly toward the direct
lighting louvres. Lighting for indirect illumina
tion purposes then escapes from the fixture only
between the outer edge of the bowl I6 andthe
outer edge of the bowl l, and is somewhat re
duced in volume, while at the same time, the vol
ume of direct lighting, by reason of the directing 10
eiTect of the reflector I6, is proportionately in
`The embodiment of Fig. 4 has the added ad
vantage of being capable, by suitable design, of
being made vertically thinner than the prior em 15
bodiment, because the angle of the bowl 1 need
not be so steep.
In View of the above, it will be seen that the
several objects of the invention are achieved and
other advantageous results attained.
Forv such illu
-As Ímanychanges could be made in carrying
>mination, it is ordinarily 'desirablethat a rela
,tively high intensity of» indirect light be `provided _out the aboveconstructions without departing
withinthe room containing the desk,~but thatan from the scope of the invention, it is intended
even higher lighting intensity, be providedv on the rvthat all matter contained in the above descrip
>working surface of the desk. `If the fixture of tion or shownin the accompanying drawing shall
the present invention is 4‘located vertically above Ybe interpretedas illustrative and not in a limiting
20 purposes as desk illumination.
«the desk, it will readily be seen that the »direct
¿illumination-from the fixture is `provided on the
¿working top of the desk, while the indirect illu
mination from the ceiling provides the necessary
lighting intensity in other portions Aof the` room.
I claim:
In an electrical illuminating fixture, a light
source, a reiiecting bowl surrounding said light 30
source and adapted to provide for indirect illu
`The louvre system of controlling the ldirect illu 4mination,and louvre means at the base of said
Vmination isl highly satisfactory, as it can be made, vbowl, said louvre means being adapted to provide
for direct illumination from said light source,
¿at a minimum cost of parts,- to provide a `well
directed, direct illumination that is Yconi’ined'to Vsaid louvre» means comprising a series of concen
tric iigures formed of sheet-like material, and
.light portsat the base of said bowl providing for
>sheet metal, which is most-economical to handle exterior Villumination of the outermost louvre,
al limited area. f Further, with-theV fixture as-thus
described, lsubstantially all parts 'l are made- from
and to finish in pleasing designs and colors.
Fig.l 4 shows an alternative embodiment of- the
invention'- which'differs from the embodiment al
_ready described only in that a bowl-shaped» re
fiector` I6 is provided around the neck of the-bulb
5. YThe bowl reflector I6 is ordinarily securedto
, said outermost louvre being provided with an out
wardly extending flange adapted to reiiect light, 40
from the light ports to illuminate the under- sur
face of said bowl.
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