US1391235A - Lighting unit - Google Patents

Description

R. w BAY'LE Y. LIGHTING UNIT. APPLICATION FILED IULY 3!,1919.

1,391,235.- I PatntedSept. 20,1921.

32042424, 2 [TNES S: [NV N R K fla BY 7412/ ATTORNEYS UNITED STATES PATENT OFFICE. 4

ROBERT WINFIELD BAYLEY, BROOKLYN, YORK, ASSIGNOB TO BAILEY 8c SONS, INC., OF BROOKLYN, N. Y., A CORPORATION OF NEW YORK. I

LIGHTING UNIT.

Specification of Letters Patent.

Patented Sept. 20, 1921.

Application filed July 81, 1919. Serial No. 314,553.

ment in Lighting Units, of which the following is a specification.

.My invention relates to an improvement upon the present type of individual lighting units whichare termed combined semi and total indirect lighting units. These units,

as is well known to persons skilled in the art,

a are designed first to overcome the deleterious effect upon the human. eye of the intense brightness emitted by the newer type of gas filled or so called nitrogen lamps and which accomplish this by the use of a so called indirect fixture,'the unnatural effect in a room produced by this type of fixture being remedied by permitting a portion of the light to escape into a translucent shield or glass bowl. Devices of this kind, with which I am familiar, are lacking .in efliciency.

- My invention has for its object to provide a lighting unit in which there will be combined indirect, semi-indirect and flood lighting, which will be so combined as to greatly increase the efliciencyof the lighting unit and thereby efiect greater economy.

One of the objects of my lighting unit is to control the rays emitted by the source of light and to direct the rays 'so that a larger area of illumination is obtained from the upper side of the indirect {reflector directly upon the ceiling by direct reflection to control and direct the illumination of a large area laterally by the flood light directed from the source of light against the under side of the upper reflector and the upper side of an intermediate reflector thereby increasing the efficiency of the illumination on the working plane and to provide means for difius'ingthe direct rays emitted by the source of light in passing either directly or through the medium of the total indirect or the upper reflector through the ceiling or throu h the laterally flood lighting so that the i umination of the working plane directly beneath the fixture will be materially increased.

My means of accomplishing the foregoing objects may be more readily comprehended by having reference to the accompanyin drawingswhich are hereunto annexed an area part of this specification in which-- Figure 1 is a side elevation of my improved lighting unit, one-half being shown in section.

Figs. 2 and 3 are similar views of the modified forms of construction.

Similar reference numerals refer to similar parts throughout the entire description.

As shown in the drawings, the unit comprises an upper or total indirect reflecting member 10 which is preferably made of suitable non-inflammable material such as enameled steel or it may be made of glass, the enameled steel is in my opinion preferable, but I do not desire to be limited to that material. This reflector is in the shape of an inverted cone and is provided with a radiall extending flange 20, which liS especially desirable when'the light is to be directed downwardly within a given space, although the fixture will be operative if the upper reflecting member is formed as shown in Fig. 2. ThIS reflector 10 is secured to a canopy or socket cover 11 by means of links 12 which are attached to the lower edge of the socket cover 11 b means of hooks 13 in.

the usual manner an are provided with eyes at their outer ends which are adapted to en-' gage books 14 which are formed on the connecting member 15. As seen in the sectional view, this member extends to the lower edge of the reflector 10 and then is bent downwardly until it is brought into engagement with the inner surface of the intermediate reflector 16, whence it extends downwardly and around the lower edge of the intermediate reflector 16 and extends radially terminating in a lip engaging member 17. These connecting members are made of flexible ,material which will expand on pressure so that they can be spread sufiiciently to engage the lip of the-translucent glass bowl 18 and will contract so as to engage with suflicient pressure the outer edge of the translucent bowl and thus hold it in position. An electric lamp bulb 19 is mounted in the canopy, as shown it is the well known type C or nitrogen lamp. It frequently happens that the user desires to employ a different sized bulb in the fixture, but inasmuch as the fixture is adjusted so as to have the source of light in a particular position it is not practical to change the bulb. I have provided means to overcome this by equipping tlfe connecting member 15 with a ring 21 which will enable the use of a larger bulb when desired and still bring it into the proper functioning position with relation to the reflecting members.

It will be apparent from an inspection ofthe drawings 1n connection with the foregoing description that a unit thus construct ed in which both the upper reflector 10 and the intermediate reflector 16 are so constructed that both their upper and lower surfaces form eflicient reflecting media that the objects set forth hereinbefore are fully accomplished by my device.

Having described my invention what I regard as new and desire to secure by Letters atent of the United States is:

1. A lighting fixture comprising the combination with a source of light of an upper member, both sides of said member being adapted to serve as reflectors, a translucent bowl below the upper member and flexible means to support said bowl and members in spaced relationshi so that a portion of the direct light rays will reach the ceiling, a portion will be reflected upward from the surface of the upper member, a. portion of the direct rays will escape laterally as a flood light intermediate the lower surface of the upper member and the upper surface of the bowl and thence to the working plane.

2. A lighting fixture comprising the combination with a source of light of an upper member, an intermediate member, both sides of said members being adapted to serve as reflectors, a translucent bowl below the intermediate member, means to support said bowl and members in spaced relationship so that a portion of the direct light rays will reach the ceiling, a portion will be reflected upward from the surface of the upper member, a portion of the direct rays will escape laterally as a flood light intermediate the lower surface of the upper member and the upper surface of the intermediate member and thence to the working plane.

3. A lighting fixture comprising the combination with a. source of light of an upper member, an intermediate member, both sides of said members being adapted to serve as reflectors a translucent bowl below the intermediate member, means to support said bowl and members in spaced relationship so that a portion of the direct light rays will reach the ceiling, a portion will be reflected upward from the surface of the upper member, aportion ofthe direct rays will escape laterally as a flooddight intermediate the lowersurface of the upper member and the upper surface of the intermediate member, and a portion of the light rays will strike the upper surface of the intermediate member and be reflected to the "lower surface of the upper member and redirected thence to the working plane.

4. A lighting fixture comprising the combination with a source of light of an upper conoidal member, having a radial flange. an intermediate member, both sides of said members being adapted to serve as reflectors, a translucent bowl below the intermediate member means to support said bowl and members in spaced relationship, so that a portion of the direct light rays will reach the ceiling, a portion wlll be reflected upward from the surface of the upper member, a portion of the direct rays will pass below 'the lower surface of the upper reflector and strike the lower surface of the flange arlid be reflected downwardly to the working p ane.

5. A lighting fixture comprising the, combination with a source of light, a socket in which it is mounted, a canopy inclosing said socket, of an upper conoidal member, having a radial flange, both sides of said member being adapted to serve as reflectors, a

translucent bowl below the upper member,

means to support said bowl and members in spaced relationship from the canopy so that a portion of the direct light rays will reach the ceiling, a portion will be reflected upward from the surface of the upper member,aportion of the direct rays Wlll pass below the lower surface of the up er reflector and strike the lower surface 0 the flange and be reflected downwardly to the working plane.

6. A lighting fixture comprising the combination with a source of light of an upper conoidal member, havinga radial flange, an intermediate member, both sides of said members being adapted to serve as reflectors, a translucent bowl below the intermediate member, means to su port said bowl and members in'spaced're ationship, so that a portion of the direct light rays will reach the ceiling, a portion will be reflected upward from the surface of the u per member, a portion of the direct rays W1 '1 pass below the, lower surface of the upper reflector and .vided with a circumferential flange which curvesdownwardly, both sides of said member being adapted to serve as reflectors, a translucent bowl below the upper member, means to support said bowl and members in spaced relationship from the canopy, said supporting means being resilient at the point of the engagement with the translucent bowl, the spaced relationship being such that a portion of the direct light rays Will reach the 5 ceiling, a portion will be reflected upward from the surface of the upper memb'er,- a portion of the direct rays will pass uninterruptedly between the bowl and the-lower surface of the upper member, and a portion of the light rays will strike the lower surface of the flange and then be reflected downwardly to the working plane, and another portion will strike the bowl and be redirected to the lower surface of the upper membar when it will ass to the Working lane.

ROBERT RINFIELD BAYLEY.

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