US1292432A - Lighting-fixture. - Google Patents

Description

W. E. COCHRAN.

LIGHTING FIXTURE.

APPLICATION FILED MAY 2. 191a.

Patented Jan/28, 1919.

2 $HEETSSHEET I II T W. E. COCHRAN.

LIGHTING FIXTURE.

APPLICATION FILED MAY 2. 191a.

1,292,432, Patented Jan. 28, 1919.

2 SHEETS--SHEET 2.

GEEQIEF Hi h-gum WESLEY E. COCHRAN, OF CLEVELAND, OHIO.

LIGHTING-FIXTURE.

Specification of Letters IPatent.

Patented Jan. 28, 1919.

Application filed May 2, 1918. Serial'No. 231,997.

To all whom it may concern:

Be it known that I, WESLEY E. CooHRAN, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Lighting-Fixtures,

of which the following is a specification.

My invention relates to improvements in lighting fixtures, the primary object of the invention being to rovide a generally improved fixture of this class which will be exceedingly simple in construction, cheap of manufacture, and eflicient in use.

A further object is the provision of a fixture which will provide a field of illuminabut has an elongated bulb stem or shank, and with this end in view my invention further relates to an improved non-transparent canopy extending above the light source and a translucent or light difi'using shade carried by and closing the lower end of said reflector, and provided with an opening receiving and containing said bulb.

A still further object is the provision of improved means for attaching and mounting the improved parts in connection with any standard or conventional forms of lamp sockets and incandescent lampbulbs.

A still further object is the'provision of an improved fixture of this class, which is adapted not onlyrto provide for proper circulation of air aboutthe lamp bulbto cool and rolong the life of the latter, but one which is particularly sanitary and safe in use, being particularly free from dust-collecting openings or pockets, and at the same time presenting an ornamental and attrac-' tive outline and artistic appearance.

With the above mentioned and other ends.

in view, the invention consists in the novel construction, arrangement, and combination of parts, hereinafter described, illustrated in some of its embodiments in the accompanying drawings, and particularly pointed out in the appended claims.

Referring to the drawings, forming apart the form of thread headings thread over and to register with the pro ectof thisspecification, Figure 1, is a side elevation of a lighting fixture constructed in accordance with this invention and embodying a lam socket of conventional formand an electric lamp bulb of the nitrogen type.

Figs 2, a central vertical sectional view of the improved canopy and shade, and illustrating a modified form of means for attaching and connecting the canopy to another form of lamp socket.

Fig. 3, a side elevation of a lighting fixture embodying a further modification, in which ,the canopy reflector is detachably mounted .upon the neck of the lamp bulb instead of the lamp socket.

Fig. 4, a vertical central sectional view of;

the canopy reflector and light difi'using shade, the lamp bulb being detached from the socket.

Similar numerals of reference designate like parts throughoutall the figures of the drawmgs.

The improved lighting fixture is shown in connection with a lamp socket 1, of the conventional form, and the improved canopy reflector 2,'is preferably detachably mountedupon and connected tothe lamp socket, as shown in Figs. 1, and 2 of the drawings, said means of connecting and mounting, in the present instance, embodying inwardly extending projections adapted to slip over and interlock with the usual outwardly extendin conventional projections, such for examp e, as the flange or beading 1, shown in Figs. 1 and 3, of the drawings, or the outwardly extending or projecting thread beadlngs 1", as shown in ig. 2 of the drawin s. The inwardly exten ing projections in the present instance, are in the specific term of inwardly extending studs or projections 29*,

' ada ted toslip over and interlock with the where the lamp socket 1, is provided with, thread headings 1", of conventional form, as shown in Fig.2, of the drawings, such inwardl extending projections may be, m y 2", adapted to ing thread beading 1", as shown. The lamp socket 1, is provided, in the present instance, with a lamp bulb 3, of the nitrogen type, and which therefore embodies a long or elongated neck portion 3 and a If desired, the canopy reflector 2, and the improved difl'using shade carried thereby, as hereinafter described, may be initially attached to the lamp bulb, as shown in Fig. 4, of the drawings, and before the bulb 1s assembled and screwed into the lamp socket, as shown in Fig. 3, of the drawings, and for this purpose the neck'portion of the canopy reflector 2, is provided with an inwardly extending projection, in the specific form of an inwardly extending flange 2, adapted to rest upon and interlock with the shoulder portion 3,"of the neck portion 3, of the lamp bulb. The lamp bulb, in the present instance, is provided with the usual light diffusing portion 3, of theconventional sand blasted form, said light difl'using or translucent shade portion 3, extending below the horizontal median portion 3, or in other words,on a horizontal plane common to the horizontal plane of the filament 3 and at right angles 'to the longitudinal axis of the latter and thelamp bulb.

As a means of intercepting and difl'using the direct, and reflected rays from the light source 3", and canopy reflector 2, respec-.

tively, of all rays of light not intercepted by the light difl'using or shaded portion 3,

of the lamp bulb, the canopy reflector 2, is rovided with a light diffusing or transucent shade 4, carried by and closing the lower end of the canopy reflector 2, said light diflusing shade 4, being provided with a central opening 4, receiving and containing the bulb 3, said light difl'using or translucent shade being preferably bowl-shaped, as

shown, and extending from andabove the horizontal median portion 3*. It will be seen that the lower edge of the light difl'using or translucent shade 4, is arranged on a horizontal plane substantially coincident with .the horizontal plane or median portion '3",

of the filament 3", and at right angles to the longitudinal axis of the lamp bulb, and. the

transluqentshade not only closes the lower end of the canopy reflector 2, and bridges the space between the. lower edges of the latter and the upper edge 3, of the light difl'using portion 3*, but conjointly with the latter forms a translucent or light difiusing shade, as a whole, extending entirely around and beneath the light source andbelow the canopy reflector to intercept and diffuse all direct and reflected rays from the light source and canopy.

The canopy 2, maybe of any suitable and convenient form, but is preferably made of non-transparent materi with a light refleeting or polished interior surface to form a reflector, and the marginal edges ,of'the canopy 2, and light diflusing or translucent meaeea shade 4, may be connected in any suitable and convenient manner, as for example, by means of a marginal flange or beading 2 as shown in the drawings.

The lower edges 4, of the shade are preferably slightly spaced from the lamp bulb 3, to provide an air circulating space 4*, and, if desired, the neck portion of the canopy may be provided with a plurality of openings 4,'for a similar purpose.

From the foregoing description, taken in connection with the accompanying drawings, the operation and advantages of my invention will be readily understood.-

Having thus described some of the em-- bodiments of my invention, what I claim and desire to secure by Letters Patentis,' 1. A lighting fixture. comprising an electric lamp bulb, a socket having external projections, a bell-shaped canopy reflector having a neck extending over said socket and interlocking with said projections, and a light difl'using shade carried by and closing the lower end of said reflector and provided with an opening receiving and containing said bulb. v

2. A lighting fixture, comprising a light "source and a bulb having a light diflusing section beneath the latter, a canopy extending above said light source and having its lower edge spaced above the horizontal plane of the upper edge of said light diffusing section, and a translucent shade carried by and closing the lower end of said canopyand having a central opening re- 100 ceivin said bulb light diffusing section and exten ing from and above the latter.

3. A lighting fixture, comprising a lamp socket provided with beaded projections, a lamp bulb mounted in said socket, a canopy reflector having a ventilated neck provided with internal projections seated on and in terlocking with said beaded projections, and a light diffusing shade carried by and closing the lower. end of said canopy reflector 110 and having a central opening containing said bulb.

4. A lighting fixture, comprising an electric lamp bulb including an elongated neck and a filament, a lamp socket,a canopy re 115 flector surrounding said neck detachab ly connected to said socket and terminating above said'bulb, and a bowl-shaped shade carried by and closing the lower end of said canopy reflector and having a central open- 2 ing receiving and surrounding said bulb on a horizontal plane passing through said filament.

5. A lighting fixture, comprising an elec tric lamp bulb including. a neck and alight 125 difl'using portion" on said bulb below the horizontal median portion, a lamp socket, a canopy reflector carried by said socket and surrounding said neck, and a light difl'using shade carried by and closing the lower end we of said reflector and provided with an opening containing said bulb and covering said bulb above said light diffusing portion thereof.

6. A lighting fixture, comprising a bulb including a light source and a light diflusing section extending from the horizontal plane common to said light source and at right angles to the longitudinal axis of said bulb, a cano y surrounding the upper portion of said bulb and havingits lower edge spaced above said light diffusing section, and a translucent shade carried by and closing the lower end of said canopy and having an opening receiving said bulb andhaving its lower edge arranged coincident with the horizontal plane of said light source and bridging the space between said light difiusing section and said canopy.

7., A lighting fixture, comprising a lamp bulb including an elongated neck and a light source therein, said bulb having a light iffusing semi-spherical section extending beneath a horizontal plane common to said light source and at right angles to the longitudinal axis of saidibulb, a canopy surround-.

ing the elongated neck portion of said bulb and having its lower edgespaced above said light diffusing semi-sphericalsection, and a .the longitudinal axis thereof, a canopy reflector surrounding said bulb and spaced above said light diffusing section, and a translucent shade-closing the lower end of said canopy reflector and having an opening extending in said horizontal plane and receiving said light diffusing section and forming conjointly therewith a translucent shade extending from the lower edges of said canopy reflector and beneath the light source of said bulb.

In testimony whereof I have affixed my signature in the presence of two witnesses.

WESLEY E. COCHRAN.

Witnesses:

HENRY E. BIKER, O. C. BILLMAN.

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